From 8cb71e8fadf289bd0436a026166235d2008ff7f6 Mon Sep 17 00:00:00 2001
From: James Allen <james@sharelatex.com>
Date: Fri, 15 Aug 2014 10:50:36 +0100
Subject: [PATCH] Initial Open Source commit

---
 services/chat/.gitignore                      |    11 +
 services/chat/Gruntfile.coffee                |   124 +
 services/chat/app.coffee                      |     5 +
 .../AuthenticationController.coffee           |    23 +
 .../Authorization/AuthorizationManager.coffee |    24 +
 .../Messages/MessageController.coffee         |    84 +
 .../Features/Messages/MessageFormatter.coffee |    16 +
 .../Messages/MessageHttpController.coffee     |    62 +
 .../Features/Messages/MessageManager.coffee   |    52 +
 .../Features/Rooms/RoomController.coffee      |   101 +
 .../coffee/Features/Rooms/RoomManager.coffee  |    18 +
 .../Sockets/RealTimeEventManager.coffee       |    25 +
 .../Features/Sockets/SocketManager.coffee     |    40 +
 .../Features/Users/UserFormatter.coffee       |    18 +
 .../Features/WebApi/WebApiManager.coffee      |    32 +
 services/chat/app/coffee/metrics.coffee       |    22 +
 services/chat/app/coffee/mongojs.coffee       |     6 +
 services/chat/app/coffee/router.coffee        |    31 +
 services/chat/app/coffee/server.coffee        |    52 +
 services/chat/config/settings.defaults.coffee |    14 +
 services/chat/package.json                    |    39 +
 services/chat/public/app.build.js             |    25 +
 services/chat/public/coffee/chat.coffee       |   109 +
 .../coffee/collections/connectedUsers.coffee  |     9 +
 .../public/coffee/collections/messages.coffee |    45 +
 .../chat/public/coffee/models/message.coffee  |     5 +
 .../chat/public/coffee/models/room.coffee     |    85 +
 .../chat/public/coffee/models/user.coffee     |    13 +
 .../public/coffee/utils/staticLoader.coffee   |    10 +
 .../public/coffee/views/chatWindowView.coffee |   219 +
 .../coffee/views/timeMessageBlockView.coffee  |    40 +
 .../coffee/views/userMessageBlockView.coffee  |    64 +
 services/chat/public/jade/templates.jade      |    24 +
 services/chat/public/js/libs/backbone.js      |  1571 +
 services/chat/public/js/libs/jquery.js        |  9478 ++++++
 .../chat/public/js/libs/jquery.storage.js     |    85 +
 services/chat/public/js/libs/moment.js        |     6 +
 services/chat/public/js/libs/underscore.js    |  1227 +
 services/chat/public/js/r.js                  | 26058 ++++++++++++++++
 services/chat/public/js/text.js               |   373 +
 services/chat/public/less/chat.less           |   198 +
 services/chat/rakefile.rb                     |   124 +
 .../AuthenticationControllerTests.coffee      |    71 +
 .../AuthorizationManagerTests.coffee          |    55 +
 .../Messages/MessageControllerTests.coffee    |   187 +
 .../Messages/MessageFormatterTests.coffee     |    13 +
 .../MessageHttpControllerTests.coffee         |   173 +
 .../Messages/MessageManagerTests.coffee       |    60 +
 .../coffee/Rooms/RoomControllerTests.coffee   |   240 +
 .../unit/coffee/Rooms/RoomManagerTests.coffee |    58 +
 .../Sockets/RealTimeEventManagerTests.coffee  |    75 +
 .../coffee/Users/UserFormatterTests.coffee    |    12 +
 52 files changed, 41511 insertions(+)
 create mode 100644 services/chat/.gitignore
 create mode 100644 services/chat/Gruntfile.coffee
 create mode 100644 services/chat/app.coffee
 create mode 100644 services/chat/app/coffee/Features/Authentication/AuthenticationController.coffee
 create mode 100644 services/chat/app/coffee/Features/Authorization/AuthorizationManager.coffee
 create mode 100644 services/chat/app/coffee/Features/Messages/MessageController.coffee
 create mode 100644 services/chat/app/coffee/Features/Messages/MessageFormatter.coffee
 create mode 100644 services/chat/app/coffee/Features/Messages/MessageHttpController.coffee
 create mode 100644 services/chat/app/coffee/Features/Messages/MessageManager.coffee
 create mode 100644 services/chat/app/coffee/Features/Rooms/RoomController.coffee
 create mode 100644 services/chat/app/coffee/Features/Rooms/RoomManager.coffee
 create mode 100644 services/chat/app/coffee/Features/Sockets/RealTimeEventManager.coffee
 create mode 100644 services/chat/app/coffee/Features/Sockets/SocketManager.coffee
 create mode 100644 services/chat/app/coffee/Features/Users/UserFormatter.coffee
 create mode 100644 services/chat/app/coffee/Features/WebApi/WebApiManager.coffee
 create mode 100644 services/chat/app/coffee/metrics.coffee
 create mode 100644 services/chat/app/coffee/mongojs.coffee
 create mode 100644 services/chat/app/coffee/router.coffee
 create mode 100644 services/chat/app/coffee/server.coffee
 create mode 100644 services/chat/config/settings.defaults.coffee
 create mode 100644 services/chat/package.json
 create mode 100644 services/chat/public/app.build.js
 create mode 100644 services/chat/public/coffee/chat.coffee
 create mode 100644 services/chat/public/coffee/collections/connectedUsers.coffee
 create mode 100644 services/chat/public/coffee/collections/messages.coffee
 create mode 100644 services/chat/public/coffee/models/message.coffee
 create mode 100644 services/chat/public/coffee/models/room.coffee
 create mode 100644 services/chat/public/coffee/models/user.coffee
 create mode 100644 services/chat/public/coffee/utils/staticLoader.coffee
 create mode 100644 services/chat/public/coffee/views/chatWindowView.coffee
 create mode 100644 services/chat/public/coffee/views/timeMessageBlockView.coffee
 create mode 100644 services/chat/public/coffee/views/userMessageBlockView.coffee
 create mode 100644 services/chat/public/jade/templates.jade
 create mode 100644 services/chat/public/js/libs/backbone.js
 create mode 100644 services/chat/public/js/libs/jquery.js
 create mode 100644 services/chat/public/js/libs/jquery.storage.js
 create mode 100644 services/chat/public/js/libs/moment.js
 create mode 100644 services/chat/public/js/libs/underscore.js
 create mode 100644 services/chat/public/js/r.js
 create mode 100644 services/chat/public/js/text.js
 create mode 100644 services/chat/public/less/chat.less
 create mode 100644 services/chat/rakefile.rb
 create mode 100644 services/chat/test/unit/coffee/Authentication/AuthenticationControllerTests.coffee
 create mode 100644 services/chat/test/unit/coffee/Authorization/AuthorizationManagerTests.coffee
 create mode 100644 services/chat/test/unit/coffee/Messages/MessageControllerTests.coffee
 create mode 100644 services/chat/test/unit/coffee/Messages/MessageFormatterTests.coffee
 create mode 100644 services/chat/test/unit/coffee/Messages/MessageHttpControllerTests.coffee
 create mode 100644 services/chat/test/unit/coffee/Messages/MessageManagerTests.coffee
 create mode 100644 services/chat/test/unit/coffee/Rooms/RoomControllerTests.coffee
 create mode 100644 services/chat/test/unit/coffee/Rooms/RoomManagerTests.coffee
 create mode 100644 services/chat/test/unit/coffee/Sockets/RealTimeEventManagerTests.coffee
 create mode 100644 services/chat/test/unit/coffee/Users/UserFormatterTests.coffee

diff --git a/services/chat/.gitignore b/services/chat/.gitignore
new file mode 100644
index 0000000000..cb03337081
--- /dev/null
+++ b/services/chat/.gitignore
@@ -0,0 +1,11 @@
+**.swp
+
+app.js
+app/js/
+test/unit/js/
+public/build/
+
+node_modules/
+
+/public/js/chat.js
+plato/
diff --git a/services/chat/Gruntfile.coffee b/services/chat/Gruntfile.coffee
new file mode 100644
index 0000000000..4ba1604d6f
--- /dev/null
+++ b/services/chat/Gruntfile.coffee
@@ -0,0 +1,124 @@
+module.exports = (grunt) ->
+
+	# Project configuration.
+	grunt.initConfig
+		coffee:
+			client: 
+				expand: true,
+				flatten: false,
+				cwd: 'public/coffee',
+				src: ['**/*.coffee'],
+				dest: 'public/build/',
+				ext: '.js'
+
+			server: 
+				expand: true,
+				flatten: false,
+				cwd: 'app/coffee',
+				src: ['**/*.coffee'],
+				dest: 'app/js/',
+				ext: '.js'
+
+			app_server: 
+				expand: true,
+				flatten: false,
+				src: ['app.coffee'],
+				dest: './',
+				ext: '.js'
+
+			server_tests:
+				expand: true,
+				flatten: false,
+				cwd: 'test/unit/coffee',
+				src: ['**/*.coffee'],
+				dest: 'test/unit/js/',
+				ext: '.js'
+
+		watch:
+			server_coffee:
+				files: ['app/**/*.coffee', 'test/unit/**/*.coffee']
+				tasks: ['compile:server', 'compile:server_tests', 'mochaTest']
+
+			client_coffee:
+				files: ['public/**/*.coffee']
+				tasks: ['compile']
+
+			less:
+				files: ['public/less/*.less']
+				tasks: ['compile']
+
+			jade:
+				files: ['public/jade/*.jade']
+				tasks: ['compile']
+
+
+		less:
+			production:
+				files:
+					"public/build/css/chat.css": "public/less/chat.less"
+
+		jade:
+			compile:
+				files:
+					"public/build/html/templates.html": ["public/jade/templates.jade"]
+
+		requirejs:
+			compile:
+				options:
+					mainConfigFile: 'public/app.build.js',
+
+		uglify:
+			my_target:
+				files:
+					'public/build/chat.js': ['public/build/chat.js']
+
+		copy:
+			main:
+				expand: true
+				cwd: 'public/js'
+				src: '**'
+				dest: 'public/build/'
+
+		clean: ["public/build", "app/js", "test/unit/js"]
+
+		nodemon:
+			dev:
+				options:
+					file: 'app.js'
+
+		concurrent:
+			dev:
+				tasks: ['nodemon', 'watch']
+				options:
+					logConcurrentOutput: true
+
+		mochaTest:
+			unit:
+				options:
+					reporter: process.env.MOCHA_RUNNER || "spec"
+					grep: grunt.option("grep")
+				src: ['test/**/*.js']
+
+		plato:
+			your_task:
+				files: 'plato': ['app/js/**/*.js'],
+
+	grunt.loadNpmTasks 'grunt-contrib-coffee'
+	grunt.loadNpmTasks 'grunt-contrib-watch'
+	grunt.loadNpmTasks 'grunt-contrib-copy'
+	grunt.loadNpmTasks 'grunt-contrib-less'
+	grunt.loadNpmTasks 'grunt-contrib-jade'
+	grunt.loadNpmTasks 'grunt-contrib-requirejs'
+	grunt.loadNpmTasks 'grunt-contrib-uglify'
+	grunt.loadNpmTasks 'grunt-nodemon'
+	grunt.loadNpmTasks 'grunt-contrib-clean'
+	grunt.loadNpmTasks 'grunt-concurrent'
+	grunt.loadNpmTasks 'grunt-mocha-test'
+	grunt.loadNpmTasks 'grunt-plato'
+
+	grunt.registerTask 'compile', ['clean',  'copy', 'coffee', 'less', 'jade', 'requirejs']
+	grunt.registerTask 'install', ['compile']
+	grunt.registerTask 'compileAndCompress', ['compile', 'uglify']
+	grunt.registerTask 'default', ['compile', 'concurrent']
+	grunt.registerTask 'test:unit', ['compile', 'mochaTest:unit']
+
diff --git a/services/chat/app.coffee b/services/chat/app.coffee
new file mode 100644
index 0000000000..ba8ec252bb
--- /dev/null
+++ b/services/chat/app.coffee
@@ -0,0 +1,5 @@
+logger = require 'logger-sharelatex'
+
+Server = require "./app/js/server"
+Server.server.listen(3010, "localhost")
+logger.log "chat sharelatex listening on port 3010"
\ No newline at end of file
diff --git a/services/chat/app/coffee/Features/Authentication/AuthenticationController.coffee b/services/chat/app/coffee/Features/Authentication/AuthenticationController.coffee
new file mode 100644
index 0000000000..2b49cdd8c0
--- /dev/null
+++ b/services/chat/app/coffee/Features/Authentication/AuthenticationController.coffee
@@ -0,0 +1,23 @@
+async = require "async"
+logger = require "logger-sharelatex"
+WebApiManager = require("../WebApi/WebApiManager")
+UserFormatter = require("../Users/UserFormatter")
+
+module.exports = AuthenticationController =
+	authClient: (client, data, callback = (error) ->) ->
+		logger.log auth_token: data.auth_token, "authenticating user"
+		WebApiManager.getUserDetailsFromAuthToken data.auth_token, (error, user) =>
+			if error?
+				logger.error data: data, client_id: client.id, err: error, "error authenticating user"
+				return callback("something went wrong")
+			logger.log user: user, auth_token: data.auth_token, "authenticated user"
+			user = UserFormatter.formatUserForClientSide user
+			jobs = []
+			for key, value of user
+				do (key, value) ->
+					jobs.push (callback) -> client.set key, value, callback
+			jobs.push (callback) -> client.set "auth_token", data.auth_token, callback
+			async.series jobs, (error, results) =>
+				callback(error, user)
+			
+			
diff --git a/services/chat/app/coffee/Features/Authorization/AuthorizationManager.coffee b/services/chat/app/coffee/Features/Authorization/AuthorizationManager.coffee
new file mode 100644
index 0000000000..0104f43f64
--- /dev/null
+++ b/services/chat/app/coffee/Features/Authorization/AuthorizationManager.coffee
@@ -0,0 +1,24 @@
+WebApiManager = require "../WebApi/WebApiManager"
+SocketManager = require "../Sockets/SocketManager"
+
+module.exports = AuthorizationManager =
+	canClientJoinProjectRoom: (client, project_id, callback = (error, authorized) ->) ->
+		client.get "auth_token", (error, auth_token) ->
+			return callback(error) if error?
+			WebApiManager.getProjectCollaborators project_id, auth_token, (error, collaborators) ->
+				return callback(error) if error?
+				client.get "id", (error, user_id) ->
+					return callback(error) if error?
+					authorized = false
+					for collaborator in collaborators
+						if collaborator.id == user_id
+							authorized = true
+							break
+					callback null, authorized
+
+	canClientSendMessageToRoom: (client, room_id, callback = (error, authorized) ->) ->
+		SocketManager.isClientInRoom(client, room_id, callback)
+
+	canClientReadMessagesInRoom: (client, room_id, callback = (error, authorized) ->) ->
+		SocketManager.isClientInRoom(client, room_id, callback)
+				
diff --git a/services/chat/app/coffee/Features/Messages/MessageController.coffee b/services/chat/app/coffee/Features/Messages/MessageController.coffee
new file mode 100644
index 0000000000..26b3ace7c4
--- /dev/null
+++ b/services/chat/app/coffee/Features/Messages/MessageController.coffee
@@ -0,0 +1,84 @@
+logger = require "logger-sharelatex"
+metrics = require "../../metrics"
+MessageManager = require "./MessageManager"
+MessageFormatter = require "./MessageFormatter"
+SocketManager = require "../Sockets/SocketManager"
+AuthorizationManager = require "../Authorization/AuthorizationManager"
+
+
+module.exports = MessageController =
+	DEFAULT_MESSAGE_LIMIT: 50
+
+	sendMessage: (client, data, callback = (error) ->) ->
+		content = data?.message?.content
+		room_id = data?.room?.id
+		return callback("malformed message") if not (content? and room_id?)
+
+		client.get "id", (error, user_id) ->
+			logger.log user_id: user_id, room_id: room_id, "sending message"
+			AuthorizationManager.canClientSendMessageToRoom client, room_id, (error, authorized) ->
+				if error?
+					logger.err err:error, user_id:user_id, "something went wrong checking if canClientSendMessageToRoom"
+					return callback("something went wrong") 
+				if authorized
+					SocketManager.getClientAttributes client, ["id"], (error, values) ->
+						if error?
+							logger.err err:error, user_id:user_id, "something went wrong getClientAttributes"
+							return callback("something went wrong") 
+						newMessageOpts = 
+							content: content
+							room_id: room_id
+							user_id: values[0]
+							timestamp: Date.now()
+						MessageManager.createMessage newMessageOpts, (error, message) ->
+							if error?
+								logger.err err:error, user_id:user_id, "something went wrong createMessage"
+								return callback("something went wrong") 
+							MessageManager.populateMessagesWithUsers [message], (error, messages) ->
+								if error?
+									logger.err err:error, user_id:user_id, "something went wrong populateMessagesWithUsers"
+									return callback("something went wrong") 
+								message = MessageFormatter.formatMessageForClientSide(messages[0])
+								message.room =
+									id: room_id
+								SocketManager.emitToRoom data.room.id, "messageReceived", message:message
+								metrics.inc "editor.instant-message"
+								logger.log user_id: user_id, room_id: room_id, "sent message"
+								callback()
+				else
+					logger.log user_id: user_id, room_id: room_id, "unauthorized attempt to send message"
+					callback("unknown room")
+
+	getMessages: (client, data, callback = (error, messages) ->) ->
+		room_id = data?.room?.id
+		return callback("malformed message") if not room_id?
+
+		client.get "id", (error, user_id) ->
+			logger.log user_id: user_id, room_id: room_id, "getting messages"
+			AuthorizationManager.canClientReadMessagesInRoom client, room_id, (error, authorized) ->
+				if error?
+					logger.err err:error, user_id:user_id, "something went canClientReadMessagesInRoom"
+					return callback("something went wrong") 
+				if authorized
+					query = room_id: room_id
+					if data.before?
+						query.timestamp = $lt: data.before
+					options =
+						order_by: "timestamp"
+						sort_order: -1
+						limit: data.limit || MessageController.DEFAULT_MESSAGE_LIMIT
+					MessageManager.getMessages query, options, (error, messages) ->
+						if error?
+							logger.err err:error, user_id:user_id, "something went getMessages"
+							return callback("something went wrong") 
+						MessageManager.populateMessagesWithUsers messages, (error, messages) ->
+							if error?
+								logger.err err:error, user_id:user_id, "something went populateMessagesWithUsers"
+								return callback("something went wrong") 
+							messages = MessageFormatter.formatMessagesForClientSide messages
+							logger.log user_id: user_id, room_id: room_id, "got messages"
+							callback null, messages
+				else
+					logger.log user_id: user_id, room_id: room_id, "unauthorized attempt to get messages"
+					callback("unknown room")
+
diff --git a/services/chat/app/coffee/Features/Messages/MessageFormatter.coffee b/services/chat/app/coffee/Features/Messages/MessageFormatter.coffee
new file mode 100644
index 0000000000..3d77cda1dd
--- /dev/null
+++ b/services/chat/app/coffee/Features/Messages/MessageFormatter.coffee
@@ -0,0 +1,16 @@
+UserFormatter = require "../Users/UserFormatter"
+
+module.exports = MessageFormatter =
+	formatMessageForClientSide: (message) ->
+		if message._id?
+			message.id = message._id.toString()
+			delete message._id
+		formattedMessage =
+			id: message.id
+			content: message.content
+			timestamp: message.timestamp
+			user: UserFormatter.formatUserForClientSide(message.user)
+		return formattedMessage
+
+	formatMessagesForClientSide: (messages) ->
+		(@formatMessageForClientSide(message) for message in messages)
diff --git a/services/chat/app/coffee/Features/Messages/MessageHttpController.coffee b/services/chat/app/coffee/Features/Messages/MessageHttpController.coffee
new file mode 100644
index 0000000000..6417837a86
--- /dev/null
+++ b/services/chat/app/coffee/Features/Messages/MessageHttpController.coffee
@@ -0,0 +1,62 @@
+logger = require "logger-sharelatex"
+metrics = require "../../metrics"
+MessageManager = require "./MessageManager"
+MessageFormatter = require "./MessageFormatter"
+RoomManager = require "../Rooms/RoomManager"
+
+module.exports = MessageHttpController =
+	DEFAULT_MESSAGE_LIMIT: 50
+
+	sendMessage: (req, res, next) ->
+		{user_id, content} = req?.body
+		{project_id} = req.params
+
+		logger.log user_id: user_id, content: content, "new message recived"
+		RoomManager.findOrCreateRoom project_id: project_id, (error, room) ->
+			return next(error) if error?
+			newMessageOpts = 
+				content: content
+				room_id: room._id
+				user_id: user_id
+				timestamp: Date.now()
+			MessageManager.createMessage newMessageOpts, (error, message) ->
+				if err? 
+					logger.err err:error, user_id:user_id, "something went wrong with create message"
+					return next(err)
+				MessageManager.populateMessagesWithUsers [message], (error, messages) ->
+					if error?
+						logger.err err:error, user_id:user_id, "something went wrong populateMessagesWithUsers"
+						return next("something went wrong") 
+					message = MessageFormatter.formatMessageForClientSide(messages[0])
+					message.room =
+						id: project_id
+					res.send(201, message)
+
+	getMessages: (req, res, next) ->
+		{project_id} = req.params
+		query = {}
+		if req.query?.before?
+			query.timestamp = $lt: parseInt(req.query.before, 10)
+		if req.query?.limit?
+			limit = parseInt(req.query.limit, 10)
+		else
+			limit = MessageHttpController.DEFAULT_MESSAGE_LIMIT
+		options =
+			order_by: "timestamp"
+			sort_order: -1
+			limit: limit
+		logger.log options:options, "get message request recived"
+		RoomManager.findOrCreateRoom project_id: project_id, (error, room) ->
+			return next(error) if error?
+			query.room_id = room._id
+			MessageManager.getMessages query, options, (error, messages) ->
+				if error?
+					logger.err err:error, "something went getMessages"
+					return next("something went wrong") 
+				MessageManager.populateMessagesWithUsers messages, (error, messages) ->
+					if error?
+						logger.err err:error, "something went populateMessagesWithUsers"
+						return next("something went wrong") 
+					messages = MessageFormatter.formatMessagesForClientSide messages
+					logger.log  project_id: project_id, "got messages"
+					res.send 200, messages
\ No newline at end of file
diff --git a/services/chat/app/coffee/Features/Messages/MessageManager.coffee b/services/chat/app/coffee/Features/Messages/MessageManager.coffee
new file mode 100644
index 0000000000..affc699692
--- /dev/null
+++ b/services/chat/app/coffee/Features/Messages/MessageManager.coffee
@@ -0,0 +1,52 @@
+mongojs = require "../../mongojs"
+db = mongojs.db
+ObjectId = mongojs.ObjectId
+WebApiManager = require "../WebApi/WebApiManager"
+async = require "async"
+
+module.exports = MessageManager =
+	createMessage: (message, callback = (error, message) ->) ->
+		message = @_ensureIdsAreObjectIds(message)
+		db.messages.save message, callback
+
+	getMessages: (query, options, callback = (error, messages) ->) ->
+		query = @_ensureIdsAreObjectIds(query)
+		cursor = db.messages.find(query)
+		if options.order_by?
+			options.sort_order ||= 1
+			sortQuery = {}
+			sortQuery[options.order_by] = options.sort_order
+			cursor = cursor.sort(sortQuery)
+		if options.limit?
+			cursor = cursor.limit(options.limit)
+		cursor.toArray callback
+
+	populateMessagesWithUsers: (messages, callback = (error, messages) ->) ->
+		jobs = new Array()
+
+		userCache = {}
+		getUserDetails = (user_id, callback = (error, user) ->) ->
+			return callback(null, userCache[user_id]) if userCache[user_id]?
+			WebApiManager.getUserDetails user_id, (error, user) ->
+				return callback(error) if error?
+				userCache[user_id] = user
+				callback null, user
+
+		for message in messages
+			do (message) ->
+				jobs.push (callback) ->
+					getUserDetails message.user_id.toString(), (error, user) ->
+						return callback(error) if error?
+						delete message.user_id
+						message.user = user
+						callback(null, message)
+
+		async.series jobs, callback
+	
+	_ensureIdsAreObjectIds: (query) ->
+		if query.user_id? and query.user_id not instanceof ObjectId
+			query.user_id = ObjectId(query.user_id)
+		if query.room_id? and query.room_id not instanceof ObjectId
+			query.room_id = ObjectId(query.room_id)
+		return query
+		
diff --git a/services/chat/app/coffee/Features/Rooms/RoomController.coffee b/services/chat/app/coffee/Features/Rooms/RoomController.coffee
new file mode 100644
index 0000000000..015cff19ad
--- /dev/null
+++ b/services/chat/app/coffee/Features/Rooms/RoomController.coffee
@@ -0,0 +1,101 @@
+async = require "async"
+logger = require "logger-sharelatex"
+AuthorizationManager = require "../Authorization/AuthorizationManager"
+RoomManager = require "../Rooms/RoomManager"
+SocketManager = require "../Sockets/SocketManager"
+
+module.exports = RoomController =
+	joinRoom: (client, data, callback = (error) ->) ->
+		if !data.room?.project_id?
+			return callback("unknown room")
+		project_id = data.room.project_id
+
+		client.get "id", (error, id) ->
+			logger.log user_id: id, project_id: project_id, "joining room"
+			AuthorizationManager.canClientJoinProjectRoom client, project_id, (error, authorized) ->
+				return callback("something went wrong") if error?
+				if authorized
+					RoomManager.findOrCreateRoom project_id: project_id, (error, room) ->
+						return callback("something went wrong") if error?
+						room_id = room._id.toString()
+						RoomController._addClientToRoom client, room_id, (error) ->
+							return callback("something went wrong") if error?
+							RoomController._getClientsInRoom room_id, (error, clients) ->
+								return callback("something went wrong") if error?
+								logger.log user_id: id, project_id: project_id, room_id: room_id, "joined room"
+								roomDetails =
+									room:
+										id: room_id
+										connectedUsers: clients
+								callback null, roomDetails
+				else
+					logger.log user_id: id, project_id: project_id, "unauthorized attempt to join room"
+					callback("unknown room")
+
+	leaveAllRooms: (client, callback = (error) ->) ->
+		client.get "id", (error, id) ->
+			logger.log user_id: id, "leaving all rooms"
+			SocketManager.getRoomIdsClientHasJoined client, (error, room_ids) ->
+				return callback("something went wrong") if error?
+				jobs = []
+				for room_id in room_ids
+					do (room_id) ->
+						jobs.push (callback) ->
+							RoomController.leaveRoom client, room_id, callback
+				async.series jobs, (error)-> callback(error)
+		
+	leaveRoom: (client, room_id, callback = (error) ->) ->
+		client.get "id", (error, id) ->
+			logger.log user_id: id, room_id: room_id, "leaving room"
+			RoomController._getClientAttributes client, (error, attributes) ->
+				return callback("something went wrong") if error?
+				SocketManager.removeClientFromRoom client, room_id, (error) ->
+					return callback("something went wrong") if error?
+					leftRoomUpdate =
+						room:
+							id: room_id
+						user: attributes
+					SocketManager.emitToRoom room_id, "userLeft", leftRoomUpdate
+					logger.log user_id: id, room_id: room_id, "left room"
+					callback()
+
+	_addClientToRoom: (client, room_id, callback = (error) ->) ->
+		RoomController._getClientAttributes client, (error, attributes) ->
+			return callback(error) if error?
+			update =
+				room:
+					id: room_id
+				user: attributes
+			SocketManager.emitToRoom room_id, "userJoined", update
+			SocketManager.addClientToRoom client, room_id, callback
+
+	_getClientsInRoom: (room_id, callback = (error, clients) ->) ->
+		SocketManager.getClientsInRoom room_id, (error, clients) ->
+			return callback(error) if error?
+			formattedClients = []
+			jobs = []
+
+			for client in clients
+				do (client) ->
+					jobs.push (callback) ->
+						RoomController._getClientAttributes client, (error, attributes) ->
+							return callback(error) if error?
+							formattedClients.push attributes
+							callback()
+
+			async.series jobs, (error) ->
+				return callback(error) if error?
+				callback null, formattedClients
+	
+	_getClientAttributes: (client, callback = (error, attributes) ->) ->
+		SocketManager.getClientAttributes client, ["id", "first_name", "last_name", "email", "gravatar_url"], (error, attributes) ->
+			return callback(error) if error?
+			[id, first_name, last_name, email, gravatar_url] = attributes
+			clientAttributes =
+				id           : id
+				first_name   : first_name
+				last_name    : last_name
+				email        : email
+				gravatar_url : gravatar_url
+			callback null, clientAttributes
+		
diff --git a/services/chat/app/coffee/Features/Rooms/RoomManager.coffee b/services/chat/app/coffee/Features/Rooms/RoomManager.coffee
new file mode 100644
index 0000000000..c9820467e8
--- /dev/null
+++ b/services/chat/app/coffee/Features/Rooms/RoomManager.coffee
@@ -0,0 +1,18 @@
+mongojs = require("../../mongojs")
+db = mongojs.db
+ObjectId = mongojs.ObjectId
+
+module.exports = RoomManager =
+	findOrCreateRoom: (query, callback = (error, room) ->) ->
+		if query.project_id? and query.project_id not instanceof ObjectId
+			query.project_id = ObjectId(query.project_id)
+
+		db.rooms.findOne query, (error, room) ->
+			return callback(error) if error?
+			if room?
+				callback null, room
+			else
+				db.rooms.save query, (error, room) ->
+					return callback(error) if error?
+					callback null, room
+		
diff --git a/services/chat/app/coffee/Features/Sockets/RealTimeEventManager.coffee b/services/chat/app/coffee/Features/Sockets/RealTimeEventManager.coffee
new file mode 100644
index 0000000000..eec636252f
--- /dev/null
+++ b/services/chat/app/coffee/Features/Sockets/RealTimeEventManager.coffee
@@ -0,0 +1,25 @@
+settings = require 'settings-sharelatex'
+rclientPub = require("redis").createClient(settings.redis.web.port, settings.redis.web.host)
+rclientPub.auth(settings.redis.web.password)
+rclientSub = require("redis").createClient(settings.redis.web.port, settings.redis.web.host)
+rclientSub.auth(settings.redis.web.password)
+
+module.exports = RealTimeEventManager =
+
+	rclientPub:rclientPub
+	rclientSub:rclientSub
+
+	emitToRoom: (room_id, message, payload...) ->
+		RealTimeEventManager.rclientPub.publish "chat-events", JSON.stringify
+			room_id: room_id
+			message: message
+			payload: payload
+
+	listenForChatEvents: () ->
+		@rclientSub.subscribe "chat-events"
+		@rclientSub.on "message", @_processEditorEvent.bind(@)
+
+	_processEditorEvent: (channel, message) ->
+		io = require('../../server').io
+		message = JSON.parse(message)
+		io.sockets.in(message.room_id).emit(message.message, message.payload...)
\ No newline at end of file
diff --git a/services/chat/app/coffee/Features/Sockets/SocketManager.coffee b/services/chat/app/coffee/Features/Sockets/SocketManager.coffee
new file mode 100644
index 0000000000..cb70fb1195
--- /dev/null
+++ b/services/chat/app/coffee/Features/Sockets/SocketManager.coffee
@@ -0,0 +1,40 @@
+async = require "async"
+RealTimeEventManager = require("./RealTimeEventManager")
+
+module.exports = SocketManager =
+	addClientToRoom: (client, room_id, callback = (error) ->) ->
+		client.join(room_id)
+		callback()
+
+	removeClientFromRoom: (client, room_id, callback = (error) ->) ->
+		client.leave(room_id)
+		callback()
+	
+	getClientAttributes: (client, attributes, callback = (error, values) ->) ->
+		jobs = []
+		for attribute in attributes
+			do (attribute) ->
+				jobs.push (cb) -> client.get attribute, cb
+		async.series jobs, callback
+
+	emitToRoom: RealTimeEventManager.emitToRoom
+
+	isClientInRoom: (targetClient, room_id, callback = (error, inRoom) ->) ->
+		io = require("../../server").io
+		for client in io.sockets.clients(room_id)
+			if client.id == targetClient.id
+				return callback null, true
+		callback null, false
+
+	getClientsInRoom: (room_id, callback = (error, clients) ->) ->
+		io = require("../../server").io
+		callback null, io.sockets.clients(room_id)
+
+	getRoomIdsClientHasJoined: (client, callback = (error, room_ids) ->) ->
+		io = require("../../server").io
+		room_ids = []
+		for room_id, value of io.sockets.manager.roomClients[client.id]
+			if room_id[0] == "/"
+				room_ids.push room_id.slice(1)
+		callback null, room_ids
+		
diff --git a/services/chat/app/coffee/Features/Users/UserFormatter.coffee b/services/chat/app/coffee/Features/Users/UserFormatter.coffee
new file mode 100644
index 0000000000..1d703a45c1
--- /dev/null
+++ b/services/chat/app/coffee/Features/Users/UserFormatter.coffee
@@ -0,0 +1,18 @@
+crypto = require "crypto"
+
+module.exports = UserFormatter =
+	formatUserForClientSide: (user) ->
+		if user._id?
+			user.id = user._id.toString()
+			delete user._id
+		return {
+			id: user.id
+			first_name: user.first_name
+			last_name: user.last_name
+			email: user.email
+			gravatar_url: @_getGravatarUrlForEmail(user.email)
+		}
+
+	_getGravatarUrlForEmail: (email) ->
+		hash = crypto.createHash("md5").update(email.toLowerCase()).digest("hex")
+		return "//www.gravatar.com/avatar/#{hash}"
diff --git a/services/chat/app/coffee/Features/WebApi/WebApiManager.coffee b/services/chat/app/coffee/Features/WebApi/WebApiManager.coffee
new file mode 100644
index 0000000000..e5e1b5c553
--- /dev/null
+++ b/services/chat/app/coffee/Features/WebApi/WebApiManager.coffee
@@ -0,0 +1,32 @@
+request = require('request').defaults(jar: false)
+Settings = require("settings-sharelatex")
+
+module.exports = WebApiManager =
+	apiRequest: (url, method, options = {}, callback = (error, result) ->) ->
+		if typeof options == "function"
+			callback = options
+			options = {}
+		url = "#{Settings.apis.web.url}#{url}"
+		options.url = url
+		options.method = method
+		request options, (error, response, body) ->
+			return callback(error) if error?
+			try
+				result = JSON.parse(body)
+			catch e
+				return callback(e)
+			return callback null, result
+
+	getUserDetailsFromAuthToken: (auth_token, callback = (error, details) ->) ->
+		@apiRequest "/user/personal_info?auth_token=#{auth_token}", "get", callback
+
+	getUserDetails: (user_id, callback = (error, details) ->) ->
+		@apiRequest "/user/#{user_id}/personal_info", "get", {
+			auth:
+				user: Settings.apis.web.user
+				pass: Settings.apis.web.pass
+				sendImmediately: true
+		}, callback
+
+	getProjectCollaborators: (project_id, auth_token, callback = (error, collaborators) ->) ->
+		@apiRequest "/project/#{project_id}/collaborators?auth_token=#{auth_token}", "get", callback
diff --git a/services/chat/app/coffee/metrics.coffee b/services/chat/app/coffee/metrics.coffee
new file mode 100644
index 0000000000..b2e7c3dad8
--- /dev/null
+++ b/services/chat/app/coffee/metrics.coffee
@@ -0,0 +1,22 @@
+StatsD = require('lynx')
+statsd = new StatsD('localhost', 8125, {on_error:->})
+
+buildKey = (key)-> "chat.#{process.env.NODE_ENV}.#{key}"
+
+module.exports =
+	set : (key, value, sampleRate = 1)->
+		statsd.set buildKey(key), value, sampleRate
+
+	inc : (key, sampleRate = 1)->
+		statsd.increment buildKey(key), sampleRate
+
+	Timer : class
+		constructor :(key, sampleRate = 1)->
+			this.start = new Date()
+			this.key = buildKey(key)
+		done:->
+			timeSpan = new Date - this.start
+			statsd.timing(this.key, timeSpan, this.sampleRate)
+
+	gauge : (key, value, sampleRate = 1)->
+		statsd.gauge key, value, sampleRate
diff --git a/services/chat/app/coffee/mongojs.coffee b/services/chat/app/coffee/mongojs.coffee
new file mode 100644
index 0000000000..134fcd05ae
--- /dev/null
+++ b/services/chat/app/coffee/mongojs.coffee
@@ -0,0 +1,6 @@
+Settings = require("settings-sharelatex")
+mongojs = require "mongojs"
+db = mongojs.connect(Settings.mongo.url, ["rooms", "messages"])
+module.exports =
+	db: db
+	ObjectId: mongojs.ObjectId
diff --git a/services/chat/app/coffee/router.coffee b/services/chat/app/coffee/router.coffee
new file mode 100644
index 0000000000..36deca62d1
--- /dev/null
+++ b/services/chat/app/coffee/router.coffee
@@ -0,0 +1,31 @@
+AuthenticationController = require("./Features/Authentication/AuthenticationController")
+MessageController = require("./Features/Messages/MessageController")
+RoomController = require("./Features/Rooms/RoomController")
+MessageHttpController = require('./Features/Messages/MessageHttpController')
+
+module.exports = Router =
+	route: (app, io) ->
+
+		app.get "/room/:project_id/messages", MessageHttpController.getMessages
+		app.post "/room/:project_id/messages", MessageHttpController.sendMessage
+		
+		app.get "/status", (req, res, next) ->
+			res.send("chat is alive")
+
+		io.sockets.on "connection", (client) ->
+			client.on "disconnect", () ->
+				RoomController.leaveAllRooms(client)
+
+			client.on "auth", (data, callback = (error) ->) ->
+				AuthenticationController.authClient(client, data, callback)
+
+			client.on "joinRoom", (data, callback = (error) ->) ->
+				RoomController.joinRoom(client, data, callback)
+
+			client.on "sendMessage", (data, callback = (error) ->) ->
+				MessageController.sendMessage(client, data, callback)
+
+			client.on "getMessages", (data, callback = (error) ->) ->
+				MessageController.getMessages(client, data, callback)
+
+			
diff --git a/services/chat/app/coffee/server.coffee b/services/chat/app/coffee/server.coffee
new file mode 100644
index 0000000000..551c2f4e02
--- /dev/null
+++ b/services/chat/app/coffee/server.coffee
@@ -0,0 +1,52 @@
+logger = require 'logger-sharelatex'
+logger.initialize("chat-sharelatex")
+metrics = require("metrics-sharelatex")
+metrics.initialize("chat")
+Path = require("path")
+express = require("express")
+app = express()
+server = require("http").createServer(app)
+io = require("socket.io").listen(server)
+io.set("resource", "/chat/socket.io")
+io.set("log level", 1)
+Router = require "./router"
+
+metrics.mongodb.monitor(Path.resolve(__dirname + "/../../node_modules/mongojs/node_modules/mongodb"), logger)
+
+app.configure ()->
+	app.use express.bodyParser()
+	app.use metrics.http.monitor(logger)
+	Router.route(app, io)
+
+app.configure 'development', ->
+	console.log "Development Enviroment"
+	app.use express.errorHandler({ dumpExceptions: true, showStack: true })
+
+app.configure 'production', ->
+	console.log "Production Enviroment"
+	app.use express.logger()
+	app.use express.errorHandler()
+
+
+
+mountPoint = "/chat"
+app.use (req, res, next) ->
+
+	if req.url.slice(0, mountPoint.length) == mountPoint
+		req.url = req.url.slice(mountPoint.length)
+		next()
+	else
+		res.send(404)
+
+app.use(express.static(__dirname + "/../../public/build"))
+
+
+
+module.exports = {
+	server: server
+	io: io
+	app: app
+}
+
+require("./Features/Sockets/RealTimeEventManager").listenForChatEvents()
+
diff --git a/services/chat/config/settings.defaults.coffee b/services/chat/config/settings.defaults.coffee
new file mode 100644
index 0000000000..d37bb95a2e
--- /dev/null
+++ b/services/chat/config/settings.defaults.coffee
@@ -0,0 +1,14 @@
+module.exports =
+	apis:
+		web:
+			url: "http://localhost:3000"
+			user: "sharelatex"
+			pass: "password"
+	mongo:
+		url : 'mongodb://127.0.0.1/sharelatex'
+
+	redis:
+		web:
+			host: "localhost"
+			port: "6379"
+			password: ""
\ No newline at end of file
diff --git a/services/chat/package.json b/services/chat/package.json
new file mode 100644
index 0000000000..1a357f4fa9
--- /dev/null
+++ b/services/chat/package.json
@@ -0,0 +1,39 @@
+{
+  "name": "chat-sharelatex",
+  "version": "0.0.1",
+  "dependencies": {
+    "async": "0.2.9",
+    "express": "3.3.1",
+    "lynx": "0.0.11",
+    "request": "2.21.0",
+    "socket.io": "0.9.14",
+    "settings": "git+ssh://git@bitbucket.org:sharelatex/settings-sharelatex.git#master",
+    "metrics-sharelatex": "git+https://github.com/sharelatex/metrics-sharelatex.git#master",
+    "logger": "git+ssh://git@bitbucket.org:sharelatex/logger-sharelatex.git#bunyan",
+    "grunt-requirejs": "~0.4.0",
+    "grunt-mocha-test": "~0.8.0",
+    "mongojs": "0.9.11",
+    "redis": "~0.10.1",
+    "coffee-script": "~1.7.1",
+    "timekeeper": "0.0.4"
+  },
+  "devDependencies": {
+    "chai": "",
+    "sandboxed-module": "",
+    "sinon": "",
+    "timekeeper": "",
+    "grunt": "~0.4.1",
+    "grunt-contrib-requirejs": "~0.4.1",
+    "grunt-contrib-coffee": "~0.7.0",
+    "grunt-contrib-watch": "~0.5.3",
+    "grunt-contrib-copy": "~0.4.1",
+    "grunt-contrib-less": "~0.8.2",
+    "grunt-contrib-jade": "~0.8.0",
+    "grunt-contrib-uglify": "~0.2.7",
+    "grunt-nodemon": "~0.1.2",
+    "grunt-contrib-clean": "~0.5.0",
+    "grunt-concurrent": "~0.4.2",
+    "grunt-plato": "~0.2.1",
+    "grunt-notify": "~0.2.16"
+  }
+}
diff --git a/services/chat/public/app.build.js b/services/chat/public/app.build.js
new file mode 100644
index 0000000000..1614b5cb7b
--- /dev/null
+++ b/services/chat/public/app.build.js
@@ -0,0 +1,25 @@
+requirejs.config({
+	baseUrl: "./build",
+	out: "./build/chat.js",
+	inlineText:true,
+	preserveLicenseComments:false,
+	shim: {
+		"libs/underscore": {
+			init: function() {
+				return _.noConflict();
+			}
+		},
+		"libs/backbone": {
+			deps: ["libs/underscore"],
+			init: function() {
+				return Backbone.noConflict();
+			}
+		}
+	},
+	paths: {
+		"moment": "libs/moment",
+	},
+	name:"chat",
+	optimize: 'none',
+	skipDirOptimize: true
+})
\ No newline at end of file
diff --git a/services/chat/public/coffee/chat.coffee b/services/chat/public/coffee/chat.coffee
new file mode 100644
index 0000000000..473c916f83
--- /dev/null
+++ b/services/chat/public/coffee/chat.coffee
@@ -0,0 +1,109 @@
+define [
+	"utils/staticLoader"
+	"libs/underscore"
+	"libs/backbone"
+	"libs/jquery.storage"
+	"models/room"
+	"models/user"
+	"views/chatWindowView"
+
+], (staticLoader, _, Backbone, jqueryStorage, Room, User, ChatWindowView) ->
+
+	staticLoader.appendAssets()
+	_.templateSettings = escape : /\{\{(.+?)\}\}/g
+
+	class GlobalNotificationManager
+		constructor: (@chat) ->
+			@focussed = true
+			$(window).on "focus", () =>
+				@clearNewMessageNotification()
+				@focussed = true
+			$(window).on "blur",  () => @focussed = false
+
+			@chat.on "joinedRoom", (room) =>
+				notifyIfAppropriate = (message) =>
+					if message.get("user") != @chat.user and !message.get("preloaded")
+						@notifyAboutNewMessage()
+
+				room.get("messages").on "add", notifyIfAppropriate
+				room.on "disconnect", () ->
+					room.get("messages").off "add", notifyIfAppropriate
+
+		notifyAboutNewMessage: () ->
+			if !@focussed and !@newMessageNotificationTimeout?
+				@originalTitle ||= window.document.title
+				do changeTitle = () =>
+					if window.document.title == @originalTitle
+						window.document.title = "New Message"
+					else
+						window.document.title = @originalTitle
+					@newMessageNotificationTimeout = setTimeout changeTitle, 800
+
+		clearNewMessageNotification: () ->
+			clearTimeout @newMessageNotificationTimeout
+			delete @newMessageNotificationTimeout
+			if @originalTitle?
+				window.document.title = @originalTitle
+
+	class Chat
+		constructor: (options) ->
+			_.extend(@, Backbone.Events)
+			window.chat = @
+			@rooms = {}
+			project_id = window.location.pathname.split( '/' )[2]
+			@socket = socket = io.connect options.url, {
+				resource: "chat/socket.io",
+				"force new connection": true
+				query:"project_id=#{project_id}"
+			}
+
+			@socket.on "connect", () =>
+				@connected = true
+				@getAuthToken (error, auth_token) =>
+					return @handleError(error) if error?
+					@socket.emit "auth", {auth_token: auth_token}, (error, user_info) =>
+						return @handleError(error) if error?
+						@user = User.findOrCreate(user_info)
+						@joinProjectRoom(options.room.project_id)
+						@trigger "authed"
+
+			@socket.on "disconnect", () =>
+				@connected = false
+				@trigger "disconnected"
+
+			@socket.on "messageReceived", (data) =>
+				@getRoom(data.message.room.id)?.onMessageReceived(data)
+
+			@socket.on "userJoined", (data) =>
+				@getRoom(data.room.id).addConnectedUser(data.user)
+
+			@socket.on "userLeft", (data) =>
+				@getRoom(data.room.id)?.removeConnectedUser(data.user)
+
+			@globalNotificationManager = new GlobalNotificationManager(@)
+
+		getRoom: (room_id) ->
+			@rooms[room_id]
+
+		joinProjectRoom: (project_id) ->
+			if !@room?
+				@room = new Room(
+					project_id: project_id
+					chat: @
+				)
+				@window = new ChatWindowView({
+					room: @room
+					chat: @
+				})
+				@room.on "joined", => @trigger("joinedRoom", @room)
+
+		getAuthToken: (callback = (error, auth_token) ->) ->
+			$.ajax "/user/auth_token", {
+				success: (data, status, xhr) ->
+					callback null, data
+				error: (xhr, status, error) ->
+					callback error
+			}
+
+		handleError: (error) ->
+			console.error error
diff --git a/services/chat/public/coffee/collections/connectedUsers.coffee b/services/chat/public/coffee/collections/connectedUsers.coffee
new file mode 100644
index 0000000000..eee80e014c
--- /dev/null
+++ b/services/chat/public/coffee/collections/connectedUsers.coffee
@@ -0,0 +1,9 @@
+define [
+	"libs/backbone"
+	"models/user"
+], (Backbone, User) ->
+	ConnectedUsers = Backbone.Collection.extend
+		model: User
+
+		initialize: (models, options) ->
+			{@chat, @room} = options
diff --git a/services/chat/public/coffee/collections/messages.coffee b/services/chat/public/coffee/collections/messages.coffee
new file mode 100644
index 0000000000..d054df89f2
--- /dev/null
+++ b/services/chat/public/coffee/collections/messages.coffee
@@ -0,0 +1,45 @@
+define [
+	"libs/backbone"
+	"models/message"
+	"models/user"
+
+], (Backbone, Message, User) ->
+
+	Messages = Backbone.Collection.extend
+		model: Message
+
+		initialize: (models, options) ->
+			{@chat, @room} = options
+
+		fetchMoreMessages: (options = { preloading: false }, callback = (error) ->) ->
+			limit = Messages.DEFAULT_MESSAGE_LIMIT
+
+			@room.fetchMessages @_buildMessagesQuery(limit), (error, messages) =>
+				if error?
+					callback(error)
+					return @chat.handleError(error)
+				if messages.length < limit
+					@trigger "noMoreMessages"
+				@_parseAndAddMessages(messages, options)
+				callback()
+
+		_parseAndAddMessages: (messages, options) ->
+			for message in messages
+				user = User.findOrCreate message.user
+				@add new Message(
+					content   : message.content
+					timestamp : message.timestamp
+					user      : user
+					preloaded : !!options.preloading
+				), at: 0
+
+		_buildMessagesQuery: (limit) ->
+			query =
+				limit: limit
+			firstMessage = @at(0)
+			if firstMessage?
+				query.before = firstMessage.get("timestamp")
+			return query
+	Messages.DEFAULT_MESSAGE_LIMIT = 50
+
+	return Messages
\ No newline at end of file
diff --git a/services/chat/public/coffee/models/message.coffee b/services/chat/public/coffee/models/message.coffee
new file mode 100644
index 0000000000..5b83fe686a
--- /dev/null
+++ b/services/chat/public/coffee/models/message.coffee
@@ -0,0 +1,5 @@
+define [
+	"libs/backbone"
+], (Backbone) ->
+	
+	Message = Backbone.Model.extend {}
\ No newline at end of file
diff --git a/services/chat/public/coffee/models/room.coffee b/services/chat/public/coffee/models/room.coffee
new file mode 100644
index 0000000000..df51bb57e1
--- /dev/null
+++ b/services/chat/public/coffee/models/room.coffee
@@ -0,0 +1,85 @@
+define [
+	"libs/underscore"
+	"libs/backbone"
+	"collections/messages"
+	"collections/connectedUsers"
+	"models/user"
+	"models/message"
+], (_, Backbone, Messages, ConnectedUsers, User, Message) ->
+
+
+	Room = Backbone.Model.extend
+		initialize: () ->
+			@chat = @get("chat")
+			@set "messages", new Messages([], chat: @chat, room: @)
+			@set "connectedUsers", new ConnectedUsers([], chat: @chat, room: @)
+
+			@get("connectedUsers").on "change", () ->
+			@get("connectedUsers").on "add", () ->
+			@get("connectedUsers").on "remove", () ->
+
+			@connected = false
+
+			@chat.on "authed", () => @join()
+			@chat.on "disconnected", () => @_onDisconnect()
+
+		join: () ->
+			@chat.socket.emit "joinRoom", room: project_id: @get("project_id"), (error, data) =>
+				return @chat.handleError(error) if error?
+				room = data.room
+				@set("id", room.id)
+				@chat.rooms[room.id] = @
+				@addConnectedUsers(room.connectedUsers)
+				@_onJoin()
+
+		_onJoin: () ->
+			@trigger "joined"
+			@connected = true
+
+			if @get("messages").models.length == 0
+				@get("messages").fetchMoreMessages preloading: true, () =>
+					@trigger("afterMessagesPreloaded")
+
+		_onDisconnect: () ->
+			@trigger "disconnected"
+			@connected = false
+
+		addConnectedUsers: (users) ->
+			for user in users
+				@addConnectedUser(user)
+
+		addConnectedUser: (user) ->
+			if user not instanceof User
+				user = User.findOrCreate(user)
+			@get("connectedUsers").add user
+
+		removeConnectedUser: (user) ->
+			if user not instanceof User
+				user = User.findOrCreate(user)
+			@get("connectedUsers").remove user
+
+		sendMessage: (content, callback = (error) ->) ->
+			if !@connected
+				return callback(new Error("Not connected"))
+			@chat.socket.emit "sendMessage", {
+				message:
+					content: content
+				room:
+					id: @get("id")
+			}
+
+		fetchMessages: (query, callback = (error, messages) ->) ->
+			if !@connected
+				return callback(new Error("Not connected"))
+			query.room = id: @get("id")
+			@chat.socket.emit "getMessages", query, callback
+			
+		onMessageReceived: (data) ->
+			message = data.message
+			user = User.findOrCreate message.user
+			message = new Message(
+				content   : data.message.content
+				timestamp : data.message.timestamp
+				user      : user
+			)
+			@get("messages").add message
\ No newline at end of file
diff --git a/services/chat/public/coffee/models/user.coffee b/services/chat/public/coffee/models/user.coffee
new file mode 100644
index 0000000000..103e9c9c5f
--- /dev/null
+++ b/services/chat/public/coffee/models/user.coffee
@@ -0,0 +1,13 @@
+define [
+	"libs/backbone"
+], (Backbone, room) ->
+
+	User = Backbone.Model.extend {},
+		findOrCreate: (attributes) ->
+			User.cache ||= {}
+			if User.cache[attributes.id]?
+				return User.cache[attributes.id]
+			else
+				user = new User(attributes)
+				User.cache[attributes.id] = user
+				return user
\ No newline at end of file
diff --git a/services/chat/public/coffee/utils/staticLoader.coffee b/services/chat/public/coffee/utils/staticLoader.coffee
new file mode 100644
index 0000000000..763f322087
--- /dev/null
+++ b/services/chat/public/coffee/utils/staticLoader.coffee
@@ -0,0 +1,10 @@
+define [
+	"text!html/templates.html"
+	"text!css/chat.css"
+], (templates, css)->
+
+	appendAssets : ->
+		$(document.body).append($(templates))
+		style = $("<style/>")
+		style.html(css)
+		$(document.body).append(style)
diff --git a/services/chat/public/coffee/views/chatWindowView.coffee b/services/chat/public/coffee/views/chatWindowView.coffee
new file mode 100644
index 0000000000..7ce22ce030
--- /dev/null
+++ b/services/chat/public/coffee/views/chatWindowView.coffee
@@ -0,0 +1,219 @@
+define [
+	"libs/underscore"
+	"libs/backbone"
+	"views/userMessageBlockView"
+	"views/timeMessageBlockView"
+], (_, Backbone, UserMessageBlockView, TimeMessageBlockView) ->
+	FIVE_MINS = 5 * 60 * 1000
+	ONE_HOUR = 60 * 60 * 1000
+	TWELVE_HOURS = ONE_HOUR * 12
+	ONE_DAY = ONE_HOUR * 24
+
+	ChatWindowView = Backbone.View.extend
+		events:
+			"keydown textarea"              : "_onTextAreaKeyDown"
+			"click .js-load-older-messages" : "_loadOlderMessages"
+			"click .js-minimize-toggle"     : "_toggleMinimizeState"
+			"click h3"                      : "_toggleMinimizeState"
+			"click .js-new-message-alert"   : "_toggleMinimizeState"
+			"click"                         : "_removeNotification"
+
+		initialize: () ->
+			@template = $("#chatWindowTemplate").html()
+			@chat = @options.chat
+			@room = @options.room
+			@listenTo @room.get("messages"), "add", (model, collection) -> @_onNewMessage(model, collection)
+			@listenTo @room.get("messages"), "noMoreMessages", () -> @$(".js-loading").hide()
+			@listenTo @room.get("connectedUsers"), "add", (user, collection) -> @_renderConnectedUsers()
+			@listenTo @room.get("connectedUsers"), "remove", (user, collection) -> @_renderConnectedUsers()
+			@listenTo @room.get("connectedUsers"), "change", (user, collection) -> @_renderConnectedUsers()
+			@listenTo @room, "joined", -> @_onJoin()
+			@listenTo @room, "disconnected", -> @_onDisconnect()
+			@listenTo @room, "afterMessagesPreloaded", -> @_scrollToBottomOfMessages()
+
+		render: () ->
+			@setElement($(@template))
+			$(document.body).append(@$el)
+			@_renderConnectedUsers()
+			@_initializeMinimizedState()
+
+		_onJoin: () ->
+			if !@rendered?
+				@render()
+				@rendered = true
+			@$el.removeClass("disconnected")
+			@$("textarea").removeAttr("disabled")
+
+		_onDisconnect: () ->
+			@$el.addClass("disconnected")
+			@$("textarea").attr("disabled", "disabled")
+
+		_onNewMessage: (message, collection) ->
+			@_renderMessage(message, collection)
+			@_notifyAboutNewMessage(message)
+
+		_renderMessage: (message, collection) ->
+
+			@messageBlocks ||= []
+			scrollEl = @$(".sent-message-area")
+
+			isOldestMessage = (message, collection)->
+				collection.indexOf(message) == 0
+
+			ismessageFromNewUser = (messageView, message)->
+				!messageView? or messageView.user != message.get("user")
+
+			isTimeForNewBlockBackwards = (message, previousUserMessageBlockView)->
+				if !message? or !previousUserMessageBlockView?
+					return true
+
+				timeSinceMessageWasSent = new Date().getTime() - message.get("timestamp")
+
+				if timeSinceMessageWasSent < ONE_HOUR
+					timeBlockSize = FIVE_MINS
+				else if timeSinceMessageWasSent > ONE_HOUR and timeSinceMessageWasSent < (ONE_DAY + TWELVE_HOURS)
+					timeBlockSize = ONE_HOUR
+				else
+					timeBlockSize = ONE_DAY
+
+				timeSinceLastPrinted = previousUserMessageBlockView.getTime() - message.get("timestamp")
+
+				if timeSinceLastPrinted > timeBlockSize
+					return true
+				else
+					return false
+
+
+			isTimeForNewBlock = (message, previousUserMessageBlockView)->
+				(message.get("timestamp") - previousUserMessageBlockView.getTime()) > FIVE_MINS
+
+
+			if isOldestMessage(message, collection)
+				oldScrollTopFromBottom = scrollEl[0].scrollHeight - scrollEl.scrollTop()
+
+				userMessageBlockView = @messageBlocks[0]
+				if ismessageFromNewUser(userMessageBlockView, message) or isTimeForNewBlockBackwards(message, userMessageBlockView)
+					userMessageBlockView = new UserMessageBlockView(user: message.get("user"))
+					@$(".sent-messages").prepend(userMessageBlockView.$el)
+					@messageBlocks.unshift userMessageBlockView
+
+				userMessageBlockView.prependMessage(message)
+
+				scrollEl.scrollTop(scrollEl[0].scrollHeight - oldScrollTopFromBottom)
+			else
+				oldScrollBottom = @_getScrollBottom()
+				userMessageBlockView = @messageBlocks[@messageBlocks.length - 1]
+
+				if ismessageFromNewUser(userMessageBlockView, message) or isTimeForNewBlock(message, userMessageBlockView)
+					userMessageBlockView = new UserMessageBlockView(user: message.get("user"))
+					@$(".sent-messages").append(userMessageBlockView.$el)
+					@messageBlocks.push userMessageBlockView
+
+				userMessageBlockView.appendMessage(message)
+
+				if oldScrollBottom <= 0
+					@_scrollToBottomOfMessages()
+
+	
+		_renderConnectedUsers: () ->
+			users = @room.get("connectedUsers")
+			names = users
+				.reject((user) => user == @chat.user)
+				.map((user) -> "#{user.get("first_name")} #{user.get("last_name")}")
+			if names.length == 0
+				text = "No one else is online :("
+			else if names.length == 1
+				text = "#{names[0]} is also online"
+			else
+				text = "#{names.slice(0, -1).join(", ")} and #{names[names.length - 1]} are also online"
+			@$(".js-connected-users").text(text)
+			@_resizeSentMessageArea()
+
+		_resizeSentMessageArea: () ->
+			marginTop = @$(".js-header").outerHeight() + @$(".js-connected-users").outerHeight()
+			@$(".js-sent-message-area").css({
+				top: marginTop + "px"
+			})
+
+		_getScrollBottom: () ->
+			scrollEl = @$(".sent-message-area")
+			return scrollEl[0].scrollHeight - scrollEl.scrollTop() - scrollEl.innerHeight()
+
+		_scrollToBottomOfMessages: () ->
+			scrollEl = @$(".sent-message-area")
+			doScroll = ->
+				return scrollEl.scrollTop(scrollEl[0].scrollHeight - scrollEl.innerHeight())
+			MathJax.Hub.Queue(["Typeset", doScroll])
+
+		_notifyAboutNewMessage: (message) ->
+			isMessageNewToUser = message.get("user") != @chat.user and !message.get("preloaded")
+			isTextAreaFocused = @$("textarea").is(":focus")
+			if !isTextAreaFocused and isMessageNewToUser
+				@unseenMessages ||= 0
+				@unseenMessages += 1
+				@$el.addClass("new-messages")
+				@$(".new-message-alert").text(@unseenMessages)
+
+		_removeNotification: () ->
+			@unseenMessages = 0
+			@$el.removeClass("new-messages")
+			@$(".new-message-alert").text("")
+
+		_onTextAreaKeyDown: (e) ->
+			if e.keyCode == 13 # Enter
+				e.preventDefault()
+				message = @$("textarea").val()
+				@$("textarea").val("")
+				@_sendMessage(message)
+
+		_loadOlderMessages: (e) ->
+			e.preventDefault()
+			@room.get("messages").fetchMoreMessages()
+
+		_sendMessage: (content) ->
+			@room.sendMessage(content)
+
+		isMinimized: () ->
+			minimized = $.localStorage "chat.rooms.project-chat.minimized"
+			if !minimized?
+				minimized = false
+			return minimized
+
+		_setMinimizedState: (state) ->
+			$.localStorage "chat.rooms.project-chat.minimized", state
+
+		_initializeMinimizedState: () ->
+			minimized = @isMinimized()
+			if minimized
+				@_minimize(false)
+
+		_toggleMinimizeState: (e) ->
+			e.preventDefault()
+			minimized = @isMinimized()
+			if !minimized
+				@_setMinimizedState(true)
+				@_minimize()
+			else
+				@_setMinimizedState(false)
+				@_unminimize()
+
+		_minimize: (animate = true) ->
+			@$(".new-message-area").hide()
+			@$(".js-connected-users").hide()
+			@$el.addClass("minimized")
+			if animate
+				@$el.animate height: 20, width: 80
+			else
+				@$el.css height: 20, width: 80
+
+		_unminimize: () ->
+			@$(".new-message-area").show()
+			@$(".js-connected-users").show()
+			@$el.removeClass("minimized")
+			@$el.animate height: 260, width: 220, () =>
+				@_resizeSentMessageArea()
+			@_scrollToBottomOfMessages()
+
+
+
+
diff --git a/services/chat/public/coffee/views/timeMessageBlockView.coffee b/services/chat/public/coffee/views/timeMessageBlockView.coffee
new file mode 100644
index 0000000000..214e176d8b
--- /dev/null
+++ b/services/chat/public/coffee/views/timeMessageBlockView.coffee
@@ -0,0 +1,40 @@
+define [
+	"libs/underscore"
+	"libs/backbone"
+	"moment"
+], (_, Backbone, moment) ->
+	ONE_WEEK = 7 * 24 * 60 * 60 * 1000
+
+	TimeMessageBlockView = Backbone.View.extend
+	
+		className : "timeSinceMessage"
+
+		initialize: () ->
+			@autoRefresh()
+		
+		setTimeOnce: (timestamp)->
+			if !@timestamp?
+				@timestamp = timestamp
+				@render()
+			return @
+
+		setTime: (@timestamp)->
+			@render()
+			return @
+
+		autoRefresh: ->
+			if @timestamp?
+				@render()
+			self = @
+			doIt = =>
+				self.autoRefresh()
+			setTimeout doIt, 60 * 1000
+
+		render: () ->
+			milisecondsSince = new Date().getTime() - @timestamp
+			if  milisecondsSince > ONE_WEEK
+				time = moment(@timestamp).format("D/MMM/YY, h:mm:ss a")
+			else
+				time =  moment(@timestamp).fromNow()
+			this.$el.html(time)
+
diff --git a/services/chat/public/coffee/views/userMessageBlockView.coffee b/services/chat/public/coffee/views/userMessageBlockView.coffee
new file mode 100644
index 0000000000..b91831b5b9
--- /dev/null
+++ b/services/chat/public/coffee/views/userMessageBlockView.coffee
@@ -0,0 +1,64 @@
+define [
+	"libs/underscore"
+	"libs/backbone"
+	"views/timeMessageBlockView"
+	"moment"
+	"https://c328740.ssl.cf1.rackcdn.com/mathjax/latest/MathJax.js?config=TeX-AMS_HTML"
+], (_, Backbone, TimeMessageBlockView, moment) ->
+
+	mathjaxConfig =
+		"HTML-CSS": { availableFonts: ["TeX"] },
+		TeX:
+			equationNumbers: { autoNumber: "AMS" },
+			useLabelIDs: false
+		tex2jax:
+			inlineMath: [ ['$','$'], ["\\(","\\)"] ],
+			displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
+			processEscapes: true
+
+
+	MathJax.Hub.Config(mathjaxConfig);
+
+
+
+	UserMessageBlockView = Backbone.View.extend
+
+		initialize: () ->
+			@template = _.template($("#messageBlockTemplate").html())
+			@user = @options.user
+			@timeMessageBlock = new TimeMessageBlockView()
+			@render()
+
+		render: () ->
+			@setElement $(@template(
+				first_name:   @user.get("first_name")
+				last_name:    @user.get("last_name")
+				gravatar_url: @user.get("gravatar_url")
+			))
+			@$(".timeArea").html(@timeMessageBlock.$el)
+
+		getTime: ->
+			return @timeMessageBlock.timestamp
+
+		appendMessage: (message) ->
+			el = @buildHtml(message)
+			@$(".messages").append(el)
+			@_renderMathJax(el)
+			@timeMessageBlock.setTimeOnce message.get("timestamp")
+
+		prependMessage: (message) ->
+			el = @buildHtml(message)
+			@$(".messages").prepend(el)
+			@_renderMathJax(el)
+			@timeMessageBlock.setTime message.get("timestamp")
+
+		buildHtml : (message)->
+			time = moment(message.get("timestamp")).format("dddd, MMMM Do YYYY, h:mm:ss a")
+			el = $("<div class='message' title='#{time}'>")
+			el.text(message.get("content"))
+			return el
+
+
+		_renderMathJax: (element)->
+			if element?
+				MathJax.Hub.Queue(["Typeset", MathJax.Hub, element.get(0)])
\ No newline at end of file
diff --git a/services/chat/public/jade/templates.jade b/services/chat/public/jade/templates.jade
new file mode 100644
index 0000000000..e0a9c419e2
--- /dev/null
+++ b/services/chat/public/jade/templates.jade
@@ -0,0 +1,24 @@
+script(type="text/templates")#chatWindowTemplate
+	.chat-window
+		.header.js-header
+			h3 Chat
+			.new-message-alert.js-new-message-alert
+			.window-controls
+				.js-minimize-toggle.minimize-toggle
+		.connected-users.js-connected-users
+		.sent-message-area.js-sent-message-area
+			.loading.js-loading
+				a(href="#").load-older-messages.js-load-older-messages Load older messages
+			.sent-messages
+		.new-message-area
+			textarea(placeholder="Your message")
+
+script(type="text/templates")#messageBlockTemplate
+	.chat-block
+		.message-block
+			.timeArea
+			.avatar
+				img(src="{{ gravatar_url }}?d=mm&s=40", alt="{{first_name}} {{last_name}}")
+			span.name {{first_name}} {{last_name}}
+			.messages
+
diff --git a/services/chat/public/js/libs/backbone.js b/services/chat/public/js/libs/backbone.js
new file mode 100644
index 0000000000..3512d42fb4
--- /dev/null
+++ b/services/chat/public/js/libs/backbone.js
@@ -0,0 +1,1571 @@
+//     Backbone.js 1.0.0
+
+//     (c) 2010-2013 Jeremy Ashkenas, DocumentCloud Inc.
+//     Backbone may be freely distributed under the MIT license.
+//     For all details and documentation:
+//     http://backbonejs.org
+
+(function(){
+
+  // Initial Setup
+  // -------------
+
+  // Save a reference to the global object (`window` in the browser, `exports`
+  // on the server).
+  var root = this;
+
+  // Save the previous value of the `Backbone` variable, so that it can be
+  // restored later on, if `noConflict` is used.
+  var previousBackbone = root.Backbone;
+
+  // Create local references to array methods we'll want to use later.
+  var array = [];
+  var push = array.push;
+  var slice = array.slice;
+  var splice = array.splice;
+
+  // The top-level namespace. All public Backbone classes and modules will
+  // be attached to this. Exported for both the browser and the server.
+  var Backbone;
+  if (typeof exports !== 'undefined') {
+    Backbone = exports;
+  } else {
+    Backbone = root.Backbone = {};
+  }
+
+  // Current version of the library. Keep in sync with `package.json`.
+  Backbone.VERSION = '1.0.0';
+
+  // Require Underscore, if we're on the server, and it's not already present.
+  var _ = root._;
+  if (!_ && (typeof require !== 'undefined')) _ = require('underscore');
+
+  // For Backbone's purposes, jQuery, Zepto, Ender, or My Library (kidding) owns
+  // the `$` variable.
+  Backbone.$ = root.jQuery || root.Zepto || root.ender || root.$;
+
+  // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
+  // to its previous owner. Returns a reference to this Backbone object.
+  Backbone.noConflict = function() {
+    root.Backbone = previousBackbone;
+    return this;
+  };
+
+  // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
+  // will fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and
+  // set a `X-Http-Method-Override` header.
+  Backbone.emulateHTTP = false;
+
+  // Turn on `emulateJSON` to support legacy servers that can't deal with direct
+  // `application/json` requests ... will encode the body as
+  // `application/x-www-form-urlencoded` instead and will send the model in a
+  // form param named `model`.
+  Backbone.emulateJSON = false;
+
+  // Backbone.Events
+  // ---------------
+
+  // A module that can be mixed in to *any object* in order to provide it with
+  // custom events. You may bind with `on` or remove with `off` callback
+  // functions to an event; `trigger`-ing an event fires all callbacks in
+  // succession.
+  //
+  //     var object = {};
+  //     _.extend(object, Backbone.Events);
+  //     object.on('expand', function(){ alert('expanded'); });
+  //     object.trigger('expand');
+  //
+  var Events = Backbone.Events = {
+
+    // Bind an event to a `callback` function. Passing `"all"` will bind
+    // the callback to all events fired.
+    on: function(name, callback, context) {
+      if (!eventsApi(this, 'on', name, [callback, context]) || !callback) return this;
+      this._events || (this._events = {});
+      var events = this._events[name] || (this._events[name] = []);
+      events.push({callback: callback, context: context, ctx: context || this});
+      return this;
+    },
+
+    // Bind an event to only be triggered a single time. After the first time
+    // the callback is invoked, it will be removed.
+    once: function(name, callback, context) {
+      if (!eventsApi(this, 'once', name, [callback, context]) || !callback) return this;
+      var self = this;
+      var once = _.once(function() {
+        self.off(name, once);
+        callback.apply(this, arguments);
+      });
+      once._callback = callback;
+      return this.on(name, once, context);
+    },
+
+    // Remove one or many callbacks. If `context` is null, removes all
+    // callbacks with that function. If `callback` is null, removes all
+    // callbacks for the event. If `name` is null, removes all bound
+    // callbacks for all events.
+    off: function(name, callback, context) {
+      var retain, ev, events, names, i, l, j, k;
+      if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
+      if (!name && !callback && !context) {
+        this._events = {};
+        return this;
+      }
+
+      names = name ? [name] : _.keys(this._events);
+      for (i = 0, l = names.length; i < l; i++) {
+        name = names[i];
+        if (events = this._events[name]) {
+          this._events[name] = retain = [];
+          if (callback || context) {
+            for (j = 0, k = events.length; j < k; j++) {
+              ev = events[j];
+              if ((callback && callback !== ev.callback && callback !== ev.callback._callback) ||
+                  (context && context !== ev.context)) {
+                retain.push(ev);
+              }
+            }
+          }
+          if (!retain.length) delete this._events[name];
+        }
+      }
+
+      return this;
+    },
+
+    // Trigger one or many events, firing all bound callbacks. Callbacks are
+    // passed the same arguments as `trigger` is, apart from the event name
+    // (unless you're listening on `"all"`, which will cause your callback to
+    // receive the true name of the event as the first argument).
+    trigger: function(name) {
+      if (!this._events) return this;
+      var args = slice.call(arguments, 1);
+      if (!eventsApi(this, 'trigger', name, args)) return this;
+      var events = this._events[name];
+      var allEvents = this._events.all;
+      if (events) triggerEvents(events, args);
+      if (allEvents) triggerEvents(allEvents, arguments);
+      return this;
+    },
+
+    // Tell this object to stop listening to either specific events ... or
+    // to every object it's currently listening to.
+    stopListening: function(obj, name, callback) {
+      var listeners = this._listeners;
+      if (!listeners) return this;
+      var deleteListener = !name && !callback;
+      if (typeof name === 'object') callback = this;
+      if (obj) (listeners = {})[obj._listenerId] = obj;
+      for (var id in listeners) {
+        listeners[id].off(name, callback, this);
+        if (deleteListener) delete this._listeners[id];
+      }
+      return this;
+    }
+
+  };
+
+  // Regular expression used to split event strings.
+  var eventSplitter = /\s+/;
+
+  // Implement fancy features of the Events API such as multiple event
+  // names `"change blur"` and jQuery-style event maps `{change: action}`
+  // in terms of the existing API.
+  var eventsApi = function(obj, action, name, rest) {
+    if (!name) return true;
+
+    // Handle event maps.
+    if (typeof name === 'object') {
+      for (var key in name) {
+        obj[action].apply(obj, [key, name[key]].concat(rest));
+      }
+      return false;
+    }
+
+    // Handle space separated event names.
+    if (eventSplitter.test(name)) {
+      var names = name.split(eventSplitter);
+      for (var i = 0, l = names.length; i < l; i++) {
+        obj[action].apply(obj, [names[i]].concat(rest));
+      }
+      return false;
+    }
+
+    return true;
+  };
+
+  // A difficult-to-believe, but optimized internal dispatch function for
+  // triggering events. Tries to keep the usual cases speedy (most internal
+  // Backbone events have 3 arguments).
+  var triggerEvents = function(events, args) {
+    var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2];
+    switch (args.length) {
+      case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return;
+      case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return;
+      case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return;
+      case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return;
+      default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args);
+    }
+  };
+
+  var listenMethods = {listenTo: 'on', listenToOnce: 'once'};
+
+  // Inversion-of-control versions of `on` and `once`. Tell *this* object to
+  // listen to an event in another object ... keeping track of what it's
+  // listening to.
+  _.each(listenMethods, function(implementation, method) {
+    Events[method] = function(obj, name, callback) {
+      var listeners = this._listeners || (this._listeners = {});
+      var id = obj._listenerId || (obj._listenerId = _.uniqueId('l'));
+      listeners[id] = obj;
+      if (typeof name === 'object') callback = this;
+      obj[implementation](name, callback, this);
+      return this;
+    };
+  });
+
+  // Aliases for backwards compatibility.
+  Events.bind   = Events.on;
+  Events.unbind = Events.off;
+
+  // Allow the `Backbone` object to serve as a global event bus, for folks who
+  // want global "pubsub" in a convenient place.
+  _.extend(Backbone, Events);
+
+  // Backbone.Model
+  // --------------
+
+  // Backbone **Models** are the basic data object in the framework --
+  // frequently representing a row in a table in a database on your server.
+  // A discrete chunk of data and a bunch of useful, related methods for
+  // performing computations and transformations on that data.
+
+  // Create a new model with the specified attributes. A client id (`cid`)
+  // is automatically generated and assigned for you.
+  var Model = Backbone.Model = function(attributes, options) {
+    var defaults;
+    var attrs = attributes || {};
+    options || (options = {});
+    this.cid = _.uniqueId('c');
+    this.attributes = {};
+    _.extend(this, _.pick(options, modelOptions));
+    if (options.parse) attrs = this.parse(attrs, options) || {};
+    if (defaults = _.result(this, 'defaults')) {
+      attrs = _.defaults({}, attrs, defaults);
+    }
+    this.set(attrs, options);
+    this.changed = {};
+    this.initialize.apply(this, arguments);
+  };
+
+  // A list of options to be attached directly to the model, if provided.
+  var modelOptions = ['url', 'urlRoot', 'collection'];
+
+  // Attach all inheritable methods to the Model prototype.
+  _.extend(Model.prototype, Events, {
+
+    // A hash of attributes whose current and previous value differ.
+    changed: null,
+
+    // The value returned during the last failed validation.
+    validationError: null,
+
+    // The default name for the JSON `id` attribute is `"id"`. MongoDB and
+    // CouchDB users may want to set this to `"_id"`.
+    idAttribute: 'id',
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Return a copy of the model's `attributes` object.
+    toJSON: function(options) {
+      return _.clone(this.attributes);
+    },
+
+    // Proxy `Backbone.sync` by default -- but override this if you need
+    // custom syncing semantics for *this* particular model.
+    sync: function() {
+      return Backbone.sync.apply(this, arguments);
+    },
+
+    // Get the value of an attribute.
+    get: function(attr) {
+      return this.attributes[attr];
+    },
+
+    // Get the HTML-escaped value of an attribute.
+    escape: function(attr) {
+      return _.escape(this.get(attr));
+    },
+
+    // Returns `true` if the attribute contains a value that is not null
+    // or undefined.
+    has: function(attr) {
+      return this.get(attr) != null;
+    },
+
+    // Set a hash of model attributes on the object, firing `"change"`. This is
+    // the core primitive operation of a model, updating the data and notifying
+    // anyone who needs to know about the change in state. The heart of the beast.
+    set: function(key, val, options) {
+      var attr, attrs, unset, changes, silent, changing, prev, current;
+      if (key == null) return this;
+
+      // Handle both `"key", value` and `{key: value}` -style arguments.
+      if (typeof key === 'object') {
+        attrs = key;
+        options = val;
+      } else {
+        (attrs = {})[key] = val;
+      }
+
+      options || (options = {});
+
+      // Run validation.
+      if (!this._validate(attrs, options)) return false;
+
+      // Extract attributes and options.
+      unset           = options.unset;
+      silent          = options.silent;
+      changes         = [];
+      changing        = this._changing;
+      this._changing  = true;
+
+      if (!changing) {
+        this._previousAttributes = _.clone(this.attributes);
+        this.changed = {};
+      }
+      current = this.attributes, prev = this._previousAttributes;
+
+      // Check for changes of `id`.
+      if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];
+
+      // For each `set` attribute, update or delete the current value.
+      for (attr in attrs) {
+        val = attrs[attr];
+        if (!_.isEqual(current[attr], val)) changes.push(attr);
+        if (!_.isEqual(prev[attr], val)) {
+          this.changed[attr] = val;
+        } else {
+          delete this.changed[attr];
+        }
+        unset ? delete current[attr] : current[attr] = val;
+      }
+
+      // Trigger all relevant attribute changes.
+      if (!silent) {
+        if (changes.length) this._pending = true;
+        for (var i = 0, l = changes.length; i < l; i++) {
+          this.trigger('change:' + changes[i], this, current[changes[i]], options);
+        }
+      }
+
+      // You might be wondering why there's a `while` loop here. Changes can
+      // be recursively nested within `"change"` events.
+      if (changing) return this;
+      if (!silent) {
+        while (this._pending) {
+          this._pending = false;
+          this.trigger('change', this, options);
+        }
+      }
+      this._pending = false;
+      this._changing = false;
+      return this;
+    },
+
+    // Remove an attribute from the model, firing `"change"`. `unset` is a noop
+    // if the attribute doesn't exist.
+    unset: function(attr, options) {
+      return this.set(attr, void 0, _.extend({}, options, {unset: true}));
+    },
+
+    // Clear all attributes on the model, firing `"change"`.
+    clear: function(options) {
+      var attrs = {};
+      for (var key in this.attributes) attrs[key] = void 0;
+      return this.set(attrs, _.extend({}, options, {unset: true}));
+    },
+
+    // Determine if the model has changed since the last `"change"` event.
+    // If you specify an attribute name, determine if that attribute has changed.
+    hasChanged: function(attr) {
+      if (attr == null) return !_.isEmpty(this.changed);
+      return _.has(this.changed, attr);
+    },
+
+    // Return an object containing all the attributes that have changed, or
+    // false if there are no changed attributes. Useful for determining what
+    // parts of a view need to be updated and/or what attributes need to be
+    // persisted to the server. Unset attributes will be set to undefined.
+    // You can also pass an attributes object to diff against the model,
+    // determining if there *would be* a change.
+    changedAttributes: function(diff) {
+      if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
+      var val, changed = false;
+      var old = this._changing ? this._previousAttributes : this.attributes;
+      for (var attr in diff) {
+        if (_.isEqual(old[attr], (val = diff[attr]))) continue;
+        (changed || (changed = {}))[attr] = val;
+      }
+      return changed;
+    },
+
+    // Get the previous value of an attribute, recorded at the time the last
+    // `"change"` event was fired.
+    previous: function(attr) {
+      if (attr == null || !this._previousAttributes) return null;
+      return this._previousAttributes[attr];
+    },
+
+    // Get all of the attributes of the model at the time of the previous
+    // `"change"` event.
+    previousAttributes: function() {
+      return _.clone(this._previousAttributes);
+    },
+
+    // Fetch the model from the server. If the server's representation of the
+    // model differs from its current attributes, they will be overridden,
+    // triggering a `"change"` event.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      if (options.parse === void 0) options.parse = true;
+      var model = this;
+      var success = options.success;
+      options.success = function(resp) {
+        if (!model.set(model.parse(resp, options), options)) return false;
+        if (success) success(model, resp, options);
+        model.trigger('sync', model, resp, options);
+      };
+      wrapError(this, options);
+      return this.sync('read', this, options);
+    },
+
+    // Set a hash of model attributes, and sync the model to the server.
+    // If the server returns an attributes hash that differs, the model's
+    // state will be `set` again.
+    save: function(key, val, options) {
+      var attrs, method, xhr, attributes = this.attributes;
+
+      // Handle both `"key", value` and `{key: value}` -style arguments.
+      if (key == null || typeof key === 'object') {
+        attrs = key;
+        options = val;
+      } else {
+        (attrs = {})[key] = val;
+      }
+
+      // If we're not waiting and attributes exist, save acts as `set(attr).save(null, opts)`.
+      if (attrs && (!options || !options.wait) && !this.set(attrs, options)) return false;
+
+      options = _.extend({validate: true}, options);
+
+      // Do not persist invalid models.
+      if (!this._validate(attrs, options)) return false;
+
+      // Set temporary attributes if `{wait: true}`.
+      if (attrs && options.wait) {
+        this.attributes = _.extend({}, attributes, attrs);
+      }
+
+      // After a successful server-side save, the client is (optionally)
+      // updated with the server-side state.
+      if (options.parse === void 0) options.parse = true;
+      var model = this;
+      var success = options.success;
+      options.success = function(resp) {
+        // Ensure attributes are restored during synchronous saves.
+        model.attributes = attributes;
+        var serverAttrs = model.parse(resp, options);
+        if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs);
+        if (_.isObject(serverAttrs) && !model.set(serverAttrs, options)) {
+          return false;
+        }
+        if (success) success(model, resp, options);
+        model.trigger('sync', model, resp, options);
+      };
+      wrapError(this, options);
+
+      method = this.isNew() ? 'create' : (options.patch ? 'patch' : 'update');
+      if (method === 'patch') options.attrs = attrs;
+      xhr = this.sync(method, this, options);
+
+      // Restore attributes.
+      if (attrs && options.wait) this.attributes = attributes;
+
+      return xhr;
+    },
+
+    // Destroy this model on the server if it was already persisted.
+    // Optimistically removes the model from its collection, if it has one.
+    // If `wait: true` is passed, waits for the server to respond before removal.
+    destroy: function(options) {
+      options = options ? _.clone(options) : {};
+      var model = this;
+      var success = options.success;
+
+      var destroy = function() {
+        model.trigger('destroy', model, model.collection, options);
+      };
+
+      options.success = function(resp) {
+        if (options.wait || model.isNew()) destroy();
+        if (success) success(model, resp, options);
+        if (!model.isNew()) model.trigger('sync', model, resp, options);
+      };
+
+      if (this.isNew()) {
+        options.success();
+        return false;
+      }
+      wrapError(this, options);
+
+      var xhr = this.sync('delete', this, options);
+      if (!options.wait) destroy();
+      return xhr;
+    },
+
+    // Default URL for the model's representation on the server -- if you're
+    // using Backbone's restful methods, override this to change the endpoint
+    // that will be called.
+    url: function() {
+      var base = _.result(this, 'urlRoot') || _.result(this.collection, 'url') || urlError();
+      if (this.isNew()) return base;
+      return base + (base.charAt(base.length - 1) === '/' ? '' : '/') + encodeURIComponent(this.id);
+    },
+
+    // **parse** converts a response into the hash of attributes to be `set` on
+    // the model. The default implementation is just to pass the response along.
+    parse: function(resp, options) {
+      return resp;
+    },
+
+    // Create a new model with identical attributes to this one.
+    clone: function() {
+      return new this.constructor(this.attributes);
+    },
+
+    // A model is new if it has never been saved to the server, and lacks an id.
+    isNew: function() {
+      return this.id == null;
+    },
+
+    // Check if the model is currently in a valid state.
+    isValid: function(options) {
+      return this._validate({}, _.extend(options || {}, { validate: true }));
+    },
+
+    // Run validation against the next complete set of model attributes,
+    // returning `true` if all is well. Otherwise, fire an `"invalid"` event.
+    _validate: function(attrs, options) {
+      if (!options.validate || !this.validate) return true;
+      attrs = _.extend({}, this.attributes, attrs);
+      var error = this.validationError = this.validate(attrs, options) || null;
+      if (!error) return true;
+      this.trigger('invalid', this, error, _.extend(options || {}, {validationError: error}));
+      return false;
+    }
+
+  });
+
+  // Underscore methods that we want to implement on the Model.
+  var modelMethods = ['keys', 'values', 'pairs', 'invert', 'pick', 'omit'];
+
+  // Mix in each Underscore method as a proxy to `Model#attributes`.
+  _.each(modelMethods, function(method) {
+    Model.prototype[method] = function() {
+      var args = slice.call(arguments);
+      args.unshift(this.attributes);
+      return _[method].apply(_, args);
+    };
+  });
+
+  // Backbone.Collection
+  // -------------------
+
+  // If models tend to represent a single row of data, a Backbone Collection is
+  // more analagous to a table full of data ... or a small slice or page of that
+  // table, or a collection of rows that belong together for a particular reason
+  // -- all of the messages in this particular folder, all of the documents
+  // belonging to this particular author, and so on. Collections maintain
+  // indexes of their models, both in order, and for lookup by `id`.
+
+  // Create a new **Collection**, perhaps to contain a specific type of `model`.
+  // If a `comparator` is specified, the Collection will maintain
+  // its models in sort order, as they're added and removed.
+  var Collection = Backbone.Collection = function(models, options) {
+    options || (options = {});
+    if (options.url) this.url = options.url;
+    if (options.model) this.model = options.model;
+    if (options.comparator !== void 0) this.comparator = options.comparator;
+    this._reset();
+    this.initialize.apply(this, arguments);
+    if (models) this.reset(models, _.extend({silent: true}, options));
+  };
+
+  // Default options for `Collection#set`.
+  var setOptions = {add: true, remove: true, merge: true};
+  var addOptions = {add: true, merge: false, remove: false};
+
+  // Define the Collection's inheritable methods.
+  _.extend(Collection.prototype, Events, {
+
+    // The default model for a collection is just a **Backbone.Model**.
+    // This should be overridden in most cases.
+    model: Model,
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // The JSON representation of a Collection is an array of the
+    // models' attributes.
+    toJSON: function(options) {
+      return this.map(function(model){ return model.toJSON(options); });
+    },
+
+    // Proxy `Backbone.sync` by default.
+    sync: function() {
+      return Backbone.sync.apply(this, arguments);
+    },
+
+    // Add a model, or list of models to the set.
+    add: function(models, options) {
+      return this.set(models, _.defaults(options || {}, addOptions));
+    },
+
+    // Remove a model, or a list of models from the set.
+    remove: function(models, options) {
+      models = _.isArray(models) ? models.slice() : [models];
+      options || (options = {});
+      var i, l, index, model;
+      for (i = 0, l = models.length; i < l; i++) {
+        model = this.get(models[i]);
+        if (!model) continue;
+        delete this._byId[model.id];
+        delete this._byId[model.cid];
+        index = this.indexOf(model);
+        this.models.splice(index, 1);
+        this.length--;
+        if (!options.silent) {
+          options.index = index;
+          model.trigger('remove', model, this, options);
+        }
+        this._removeReference(model);
+      }
+      return this;
+    },
+
+    // Update a collection by `set`-ing a new list of models, adding new ones,
+    // removing models that are no longer present, and merging models that
+    // already exist in the collection, as necessary. Similar to **Model#set**,
+    // the core operation for updating the data contained by the collection.
+    set: function(models, options) {
+      options = _.defaults(options || {}, setOptions);
+      if (options.parse) models = this.parse(models, options);
+      if (!_.isArray(models)) models = models ? [models] : [];
+      var i, l, model, attrs, existing, sort;
+      var at = options.at;
+      var sortable = this.comparator && (at == null) && options.sort !== false;
+      var sortAttr = _.isString(this.comparator) ? this.comparator : null;
+      var toAdd = [], toRemove = [], modelMap = {};
+
+      // Turn bare objects into model references, and prevent invalid models
+      // from being added.
+      for (i = 0, l = models.length; i < l; i++) {
+        if (!(model = this._prepareModel(models[i], options))) continue;
+
+        // If a duplicate is found, prevent it from being added and
+        // optionally merge it into the existing model.
+        if (existing = this.get(model)) {
+          if (options.remove) modelMap[existing.cid] = true;
+          if (options.merge) {
+            existing.set(model.attributes, options);
+            if (sortable && !sort && existing.hasChanged(sortAttr)) sort = true;
+          }
+
+        // This is a new model, push it to the `toAdd` list.
+        } else if (options.add) {
+          toAdd.push(model);
+
+          // Listen to added models' events, and index models for lookup by
+          // `id` and by `cid`.
+          model.on('all', this._onModelEvent, this);
+          this._byId[model.cid] = model;
+          if (model.id != null) this._byId[model.id] = model;
+        }
+      }
+
+      // Remove nonexistent models if appropriate.
+      if (options.remove) {
+        for (i = 0, l = this.length; i < l; ++i) {
+          if (!modelMap[(model = this.models[i]).cid]) toRemove.push(model);
+        }
+        if (toRemove.length) this.remove(toRemove, options);
+      }
+
+      // See if sorting is needed, update `length` and splice in new models.
+      if (toAdd.length) {
+        if (sortable) sort = true;
+        this.length += toAdd.length;
+        if (at != null) {
+          splice.apply(this.models, [at, 0].concat(toAdd));
+        } else {
+          push.apply(this.models, toAdd);
+        }
+      }
+
+      // Silently sort the collection if appropriate.
+      if (sort) this.sort({silent: true});
+
+      if (options.silent) return this;
+
+      // Trigger `add` events.
+      for (i = 0, l = toAdd.length; i < l; i++) {
+        (model = toAdd[i]).trigger('add', model, this, options);
+      }
+
+      // Trigger `sort` if the collection was sorted.
+      if (sort) this.trigger('sort', this, options);
+      return this;
+    },
+
+    // When you have more items than you want to add or remove individually,
+    // you can reset the entire set with a new list of models, without firing
+    // any granular `add` or `remove` events. Fires `reset` when finished.
+    // Useful for bulk operations and optimizations.
+    reset: function(models, options) {
+      options || (options = {});
+      for (var i = 0, l = this.models.length; i < l; i++) {
+        this._removeReference(this.models[i]);
+      }
+      options.previousModels = this.models;
+      this._reset();
+      this.add(models, _.extend({silent: true}, options));
+      if (!options.silent) this.trigger('reset', this, options);
+      return this;
+    },
+
+    // Add a model to the end of the collection.
+    push: function(model, options) {
+      model = this._prepareModel(model, options);
+      this.add(model, _.extend({at: this.length}, options));
+      return model;
+    },
+
+    // Remove a model from the end of the collection.
+    pop: function(options) {
+      var model = this.at(this.length - 1);
+      this.remove(model, options);
+      return model;
+    },
+
+    // Add a model to the beginning of the collection.
+    unshift: function(model, options) {
+      model = this._prepareModel(model, options);
+      this.add(model, _.extend({at: 0}, options));
+      return model;
+    },
+
+    // Remove a model from the beginning of the collection.
+    shift: function(options) {
+      var model = this.at(0);
+      this.remove(model, options);
+      return model;
+    },
+
+    // Slice out a sub-array of models from the collection.
+    slice: function(begin, end) {
+      return this.models.slice(begin, end);
+    },
+
+    // Get a model from the set by id.
+    get: function(obj) {
+      if (obj == null) return void 0;
+      return this._byId[obj.id != null ? obj.id : obj.cid || obj];
+    },
+
+    // Get the model at the given index.
+    at: function(index) {
+      return this.models[index];
+    },
+
+    // Return models with matching attributes. Useful for simple cases of
+    // `filter`.
+    where: function(attrs, first) {
+      if (_.isEmpty(attrs)) return first ? void 0 : [];
+      return this[first ? 'find' : 'filter'](function(model) {
+        for (var key in attrs) {
+          if (attrs[key] !== model.get(key)) return false;
+        }
+        return true;
+      });
+    },
+
+    // Return the first model with matching attributes. Useful for simple cases
+    // of `find`.
+    findWhere: function(attrs) {
+      return this.where(attrs, true);
+    },
+
+    // Force the collection to re-sort itself. You don't need to call this under
+    // normal circumstances, as the set will maintain sort order as each item
+    // is added.
+    sort: function(options) {
+      if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
+      options || (options = {});
+
+      // Run sort based on type of `comparator`.
+      if (_.isString(this.comparator) || this.comparator.length === 1) {
+        this.models = this.sortBy(this.comparator, this);
+      } else {
+        this.models.sort(_.bind(this.comparator, this));
+      }
+
+      if (!options.silent) this.trigger('sort', this, options);
+      return this;
+    },
+
+    // Figure out the smallest index at which a model should be inserted so as
+    // to maintain order.
+    sortedIndex: function(model, value, context) {
+      value || (value = this.comparator);
+      var iterator = _.isFunction(value) ? value : function(model) {
+        return model.get(value);
+      };
+      return _.sortedIndex(this.models, model, iterator, context);
+    },
+
+    // Pluck an attribute from each model in the collection.
+    pluck: function(attr) {
+      return _.invoke(this.models, 'get', attr);
+    },
+
+    // Fetch the default set of models for this collection, resetting the
+    // collection when they arrive. If `reset: true` is passed, the response
+    // data will be passed through the `reset` method instead of `set`.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      if (options.parse === void 0) options.parse = true;
+      var success = options.success;
+      var collection = this;
+      options.success = function(resp) {
+        var method = options.reset ? 'reset' : 'set';
+        collection[method](resp, options);
+        if (success) success(collection, resp, options);
+        collection.trigger('sync', collection, resp, options);
+      };
+      wrapError(this, options);
+      return this.sync('read', this, options);
+    },
+
+    // Create a new instance of a model in this collection. Add the model to the
+    // collection immediately, unless `wait: true` is passed, in which case we
+    // wait for the server to agree.
+    create: function(model, options) {
+      options = options ? _.clone(options) : {};
+      if (!(model = this._prepareModel(model, options))) return false;
+      if (!options.wait) this.add(model, options);
+      var collection = this;
+      var success = options.success;
+      options.success = function(resp) {
+        if (options.wait) collection.add(model, options);
+        if (success) success(model, resp, options);
+      };
+      model.save(null, options);
+      return model;
+    },
+
+    // **parse** converts a response into a list of models to be added to the
+    // collection. The default implementation is just to pass it through.
+    parse: function(resp, options) {
+      return resp;
+    },
+
+    // Create a new collection with an identical list of models as this one.
+    clone: function() {
+      return new this.constructor(this.models);
+    },
+
+    // Private method to reset all internal state. Called when the collection
+    // is first initialized or reset.
+    _reset: function() {
+      this.length = 0;
+      this.models = [];
+      this._byId  = {};
+    },
+
+    // Prepare a hash of attributes (or other model) to be added to this
+    // collection.
+    _prepareModel: function(attrs, options) {
+      if (attrs instanceof Model) {
+        if (!attrs.collection) attrs.collection = this;
+        return attrs;
+      }
+      options || (options = {});
+      options.collection = this;
+      var model = new this.model(attrs, options);
+      if (!model._validate(attrs, options)) {
+        this.trigger('invalid', this, attrs, options);
+        return false;
+      }
+      return model;
+    },
+
+    // Internal method to sever a model's ties to a collection.
+    _removeReference: function(model) {
+      if (this === model.collection) delete model.collection;
+      model.off('all', this._onModelEvent, this);
+    },
+
+    // Internal method called every time a model in the set fires an event.
+    // Sets need to update their indexes when models change ids. All other
+    // events simply proxy through. "add" and "remove" events that originate
+    // in other collections are ignored.
+    _onModelEvent: function(event, model, collection, options) {
+      if ((event === 'add' || event === 'remove') && collection !== this) return;
+      if (event === 'destroy') this.remove(model, options);
+      if (model && event === 'change:' + model.idAttribute) {
+        delete this._byId[model.previous(model.idAttribute)];
+        if (model.id != null) this._byId[model.id] = model;
+      }
+      this.trigger.apply(this, arguments);
+    }
+
+  });
+
+  // Underscore methods that we want to implement on the Collection.
+  // 90% of the core usefulness of Backbone Collections is actually implemented
+  // right here:
+  var methods = ['forEach', 'each', 'map', 'collect', 'reduce', 'foldl',
+    'inject', 'reduceRight', 'foldr', 'find', 'detect', 'filter', 'select',
+    'reject', 'every', 'all', 'some', 'any', 'include', 'contains', 'invoke',
+    'max', 'min', 'toArray', 'size', 'first', 'head', 'take', 'initial', 'rest',
+    'tail', 'drop', 'last', 'without', 'indexOf', 'shuffle', 'lastIndexOf',
+    'isEmpty', 'chain'];
+
+  // Mix in each Underscore method as a proxy to `Collection#models`.
+  _.each(methods, function(method) {
+    Collection.prototype[method] = function() {
+      var args = slice.call(arguments);
+      args.unshift(this.models);
+      return _[method].apply(_, args);
+    };
+  });
+
+  // Underscore methods that take a property name as an argument.
+  var attributeMethods = ['groupBy', 'countBy', 'sortBy'];
+
+  // Use attributes instead of properties.
+  _.each(attributeMethods, function(method) {
+    Collection.prototype[method] = function(value, context) {
+      var iterator = _.isFunction(value) ? value : function(model) {
+        return model.get(value);
+      };
+      return _[method](this.models, iterator, context);
+    };
+  });
+
+  // Backbone.View
+  // -------------
+
+  // Backbone Views are almost more convention than they are actual code. A View
+  // is simply a JavaScript object that represents a logical chunk of UI in the
+  // DOM. This might be a single item, an entire list, a sidebar or panel, or
+  // even the surrounding frame which wraps your whole app. Defining a chunk of
+  // UI as a **View** allows you to define your DOM events declaratively, without
+  // having to worry about render order ... and makes it easy for the view to
+  // react to specific changes in the state of your models.
+
+  // Creating a Backbone.View creates its initial element outside of the DOM,
+  // if an existing element is not provided...
+  var View = Backbone.View = function(options) {
+    this.cid = _.uniqueId('view');
+    this._configure(options || {});
+    this._ensureElement();
+    this.initialize.apply(this, arguments);
+    this.delegateEvents();
+  };
+
+  // Cached regex to split keys for `delegate`.
+  var delegateEventSplitter = /^(\S+)\s*(.*)$/;
+
+  // List of view options to be merged as properties.
+  var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events'];
+
+  // Set up all inheritable **Backbone.View** properties and methods.
+  _.extend(View.prototype, Events, {
+
+    // The default `tagName` of a View's element is `"div"`.
+    tagName: 'div',
+
+    // jQuery delegate for element lookup, scoped to DOM elements within the
+    // current view. This should be prefered to global lookups where possible.
+    $: function(selector) {
+      return this.$el.find(selector);
+    },
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // **render** is the core function that your view should override, in order
+    // to populate its element (`this.el`), with the appropriate HTML. The
+    // convention is for **render** to always return `this`.
+    render: function() {
+      return this;
+    },
+
+    // Remove this view by taking the element out of the DOM, and removing any
+    // applicable Backbone.Events listeners.
+    remove: function() {
+      this.$el.remove();
+      this.stopListening();
+      return this;
+    },
+
+    // Change the view's element (`this.el` property), including event
+    // re-delegation.
+    setElement: function(element, delegate) {
+      if (this.$el) this.undelegateEvents();
+      this.$el = element instanceof Backbone.$ ? element : Backbone.$(element);
+      this.el = this.$el[0];
+      if (delegate !== false) this.delegateEvents();
+      return this;
+    },
+
+    // Set callbacks, where `this.events` is a hash of
+    //
+    // *{"event selector": "callback"}*
+    //
+    //     {
+    //       'mousedown .title':  'edit',
+    //       'click .button':     'save'
+    //       'click .open':       function(e) { ... }
+    //     }
+    //
+    // pairs. Callbacks will be bound to the view, with `this` set properly.
+    // Uses event delegation for efficiency.
+    // Omitting the selector binds the event to `this.el`.
+    // This only works for delegate-able events: not `focus`, `blur`, and
+    // not `change`, `submit`, and `reset` in Internet Explorer.
+    delegateEvents: function(events) {
+      if (!(events || (events = _.result(this, 'events')))) return this;
+      this.undelegateEvents();
+      for (var key in events) {
+        var method = events[key];
+        if (!_.isFunction(method)) method = this[events[key]];
+        if (!method) continue;
+
+        var match = key.match(delegateEventSplitter);
+        var eventName = match[1], selector = match[2];
+        method = _.bind(method, this);
+        eventName += '.delegateEvents' + this.cid;
+        if (selector === '') {
+          this.$el.on(eventName, method);
+        } else {
+          this.$el.on(eventName, selector, method);
+        }
+      }
+      return this;
+    },
+
+    // Clears all callbacks previously bound to the view with `delegateEvents`.
+    // You usually don't need to use this, but may wish to if you have multiple
+    // Backbone views attached to the same DOM element.
+    undelegateEvents: function() {
+      this.$el.off('.delegateEvents' + this.cid);
+      return this;
+    },
+
+    // Performs the initial configuration of a View with a set of options.
+    // Keys with special meaning *(e.g. model, collection, id, className)* are
+    // attached directly to the view.  See `viewOptions` for an exhaustive
+    // list.
+    _configure: function(options) {
+      if (this.options) options = _.extend({}, _.result(this, 'options'), options);
+      _.extend(this, _.pick(options, viewOptions));
+      this.options = options;
+    },
+
+    // Ensure that the View has a DOM element to render into.
+    // If `this.el` is a string, pass it through `$()`, take the first
+    // matching element, and re-assign it to `el`. Otherwise, create
+    // an element from the `id`, `className` and `tagName` properties.
+    _ensureElement: function() {
+      if (!this.el) {
+        var attrs = _.extend({}, _.result(this, 'attributes'));
+        if (this.id) attrs.id = _.result(this, 'id');
+        if (this.className) attrs['class'] = _.result(this, 'className');
+        var $el = Backbone.$('<' + _.result(this, 'tagName') + '>').attr(attrs);
+        this.setElement($el, false);
+      } else {
+        this.setElement(_.result(this, 'el'), false);
+      }
+    }
+
+  });
+
+  // Backbone.sync
+  // -------------
+
+  // Override this function to change the manner in which Backbone persists
+  // models to the server. You will be passed the type of request, and the
+  // model in question. By default, makes a RESTful Ajax request
+  // to the model's `url()`. Some possible customizations could be:
+  //
+  // * Use `setTimeout` to batch rapid-fire updates into a single request.
+  // * Send up the models as XML instead of JSON.
+  // * Persist models via WebSockets instead of Ajax.
+  //
+  // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
+  // as `POST`, with a `_method` parameter containing the true HTTP method,
+  // as well as all requests with the body as `application/x-www-form-urlencoded`
+  // instead of `application/json` with the model in a param named `model`.
+  // Useful when interfacing with server-side languages like **PHP** that make
+  // it difficult to read the body of `PUT` requests.
+  Backbone.sync = function(method, model, options) {
+    var type = methodMap[method];
+
+    // Default options, unless specified.
+    _.defaults(options || (options = {}), {
+      emulateHTTP: Backbone.emulateHTTP,
+      emulateJSON: Backbone.emulateJSON
+    });
+
+    // Default JSON-request options.
+    var params = {type: type, dataType: 'json'};
+
+    // Ensure that we have a URL.
+    if (!options.url) {
+      params.url = _.result(model, 'url') || urlError();
+    }
+
+    // Ensure that we have the appropriate request data.
+    if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) {
+      params.contentType = 'application/json';
+      params.data = JSON.stringify(options.attrs || model.toJSON(options));
+    }
+
+    // For older servers, emulate JSON by encoding the request into an HTML-form.
+    if (options.emulateJSON) {
+      params.contentType = 'application/x-www-form-urlencoded';
+      params.data = params.data ? {model: params.data} : {};
+    }
+
+    // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
+    // And an `X-HTTP-Method-Override` header.
+    if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) {
+      params.type = 'POST';
+      if (options.emulateJSON) params.data._method = type;
+      var beforeSend = options.beforeSend;
+      options.beforeSend = function(xhr) {
+        xhr.setRequestHeader('X-HTTP-Method-Override', type);
+        if (beforeSend) return beforeSend.apply(this, arguments);
+      };
+    }
+
+    // Don't process data on a non-GET request.
+    if (params.type !== 'GET' && !options.emulateJSON) {
+      params.processData = false;
+    }
+
+    // If we're sending a `PATCH` request, and we're in an old Internet Explorer
+    // that still has ActiveX enabled by default, override jQuery to use that
+    // for XHR instead. Remove this line when jQuery supports `PATCH` on IE8.
+    if (params.type === 'PATCH' && window.ActiveXObject &&
+          !(window.external && window.external.msActiveXFilteringEnabled)) {
+      params.xhr = function() {
+        return new ActiveXObject("Microsoft.XMLHTTP");
+      };
+    }
+
+    // Make the request, allowing the user to override any Ajax options.
+    var xhr = options.xhr = Backbone.ajax(_.extend(params, options));
+    model.trigger('request', model, xhr, options);
+    return xhr;
+  };
+
+  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
+  var methodMap = {
+    'create': 'POST',
+    'update': 'PUT',
+    'patch':  'PATCH',
+    'delete': 'DELETE',
+    'read':   'GET'
+  };
+
+  // Set the default implementation of `Backbone.ajax` to proxy through to `$`.
+  // Override this if you'd like to use a different library.
+  Backbone.ajax = function() {
+    return Backbone.$.ajax.apply(Backbone.$, arguments);
+  };
+
+  // Backbone.Router
+  // ---------------
+
+  // Routers map faux-URLs to actions, and fire events when routes are
+  // matched. Creating a new one sets its `routes` hash, if not set statically.
+  var Router = Backbone.Router = function(options) {
+    options || (options = {});
+    if (options.routes) this.routes = options.routes;
+    this._bindRoutes();
+    this.initialize.apply(this, arguments);
+  };
+
+  // Cached regular expressions for matching named param parts and splatted
+  // parts of route strings.
+  var optionalParam = /\((.*?)\)/g;
+  var namedParam    = /(\(\?)?:\w+/g;
+  var splatParam    = /\*\w+/g;
+  var escapeRegExp  = /[\-{}\[\]+?.,\\\^$|#\s]/g;
+
+  // Set up all inheritable **Backbone.Router** properties and methods.
+  _.extend(Router.prototype, Events, {
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Manually bind a single named route to a callback. For example:
+    //
+    //     this.route('search/:query/p:num', 'search', function(query, num) {
+    //       ...
+    //     });
+    //
+    route: function(route, name, callback) {
+      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
+      if (_.isFunction(name)) {
+        callback = name;
+        name = '';
+      }
+      if (!callback) callback = this[name];
+      var router = this;
+      Backbone.history.route(route, function(fragment) {
+        var args = router._extractParameters(route, fragment);
+        callback && callback.apply(router, args);
+        router.trigger.apply(router, ['route:' + name].concat(args));
+        router.trigger('route', name, args);
+        Backbone.history.trigger('route', router, name, args);
+      });
+      return this;
+    },
+
+    // Simple proxy to `Backbone.history` to save a fragment into the history.
+    navigate: function(fragment, options) {
+      Backbone.history.navigate(fragment, options);
+      return this;
+    },
+
+    // Bind all defined routes to `Backbone.history`. We have to reverse the
+    // order of the routes here to support behavior where the most general
+    // routes can be defined at the bottom of the route map.
+    _bindRoutes: function() {
+      if (!this.routes) return;
+      this.routes = _.result(this, 'routes');
+      var route, routes = _.keys(this.routes);
+      while ((route = routes.pop()) != null) {
+        this.route(route, this.routes[route]);
+      }
+    },
+
+    // Convert a route string into a regular expression, suitable for matching
+    // against the current location hash.
+    _routeToRegExp: function(route) {
+      route = route.replace(escapeRegExp, '\\$&')
+                   .replace(optionalParam, '(?:$1)?')
+                   .replace(namedParam, function(match, optional){
+                     return optional ? match : '([^\/]+)';
+                   })
+                   .replace(splatParam, '(.*?)');
+      return new RegExp('^' + route + '$');
+    },
+
+    // Given a route, and a URL fragment that it matches, return the array of
+    // extracted decoded parameters. Empty or unmatched parameters will be
+    // treated as `null` to normalize cross-browser behavior.
+    _extractParameters: function(route, fragment) {
+      var params = route.exec(fragment).slice(1);
+      return _.map(params, function(param) {
+        return param ? decodeURIComponent(param) : null;
+      });
+    }
+
+  });
+
+  // Backbone.History
+  // ----------------
+
+  // Handles cross-browser history management, based on either
+  // [pushState](http://diveintohtml5.info/history.html) and real URLs, or
+  // [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange)
+  // and URL fragments. If the browser supports neither (old IE, natch),
+  // falls back to polling.
+  var History = Backbone.History = function() {
+    this.handlers = [];
+    _.bindAll(this, 'checkUrl');
+
+    // Ensure that `History` can be used outside of the browser.
+    if (typeof window !== 'undefined') {
+      this.location = window.location;
+      this.history = window.history;
+    }
+  };
+
+  // Cached regex for stripping a leading hash/slash and trailing space.
+  var routeStripper = /^[#\/]|\s+$/g;
+
+  // Cached regex for stripping leading and trailing slashes.
+  var rootStripper = /^\/+|\/+$/g;
+
+  // Cached regex for detecting MSIE.
+  var isExplorer = /msie [\w.]+/;
+
+  // Cached regex for removing a trailing slash.
+  var trailingSlash = /\/$/;
+
+  // Has the history handling already been started?
+  History.started = false;
+
+  // Set up all inheritable **Backbone.History** properties and methods.
+  _.extend(History.prototype, Events, {
+
+    // The default interval to poll for hash changes, if necessary, is
+    // twenty times a second.
+    interval: 50,
+
+    // Gets the true hash value. Cannot use location.hash directly due to bug
+    // in Firefox where location.hash will always be decoded.
+    getHash: function(window) {
+      var match = (window || this).location.href.match(/#(.*)$/);
+      return match ? match[1] : '';
+    },
+
+    // Get the cross-browser normalized URL fragment, either from the URL,
+    // the hash, or the override.
+    getFragment: function(fragment, forcePushState) {
+      if (fragment == null) {
+        if (this._hasPushState || !this._wantsHashChange || forcePushState) {
+          fragment = this.location.pathname;
+          var root = this.root.replace(trailingSlash, '');
+          if (!fragment.indexOf(root)) fragment = fragment.substr(root.length);
+        } else {
+          fragment = this.getHash();
+        }
+      }
+      return fragment.replace(routeStripper, '');
+    },
+
+    // Start the hash change handling, returning `true` if the current URL matches
+    // an existing route, and `false` otherwise.
+    start: function(options) {
+      if (History.started) throw new Error("Backbone.history has already been started");
+      History.started = true;
+
+      // Figure out the initial configuration. Do we need an iframe?
+      // Is pushState desired ... is it available?
+      this.options          = _.extend({}, {root: '/'}, this.options, options);
+      this.root             = this.options.root;
+      this._wantsHashChange = this.options.hashChange !== false;
+      this._wantsPushState  = !!this.options.pushState;
+      this._hasPushState    = !!(this.options.pushState && this.history && this.history.pushState);
+      var fragment          = this.getFragment();
+      var docMode           = document.documentMode;
+      var oldIE             = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7));
+
+      // Normalize root to always include a leading and trailing slash.
+      this.root = ('/' + this.root + '/').replace(rootStripper, '/');
+
+      if (oldIE && this._wantsHashChange) {
+        this.iframe = Backbone.$('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo('body')[0].contentWindow;
+        this.navigate(fragment);
+      }
+
+      // Depending on whether we're using pushState or hashes, and whether
+      // 'onhashchange' is supported, determine how we check the URL state.
+      if (this._hasPushState) {
+        Backbone.$(window).on('popstate', this.checkUrl);
+      } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
+        Backbone.$(window).on('hashchange', this.checkUrl);
+      } else if (this._wantsHashChange) {
+        this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
+      }
+
+      // Determine if we need to change the base url, for a pushState link
+      // opened by a non-pushState browser.
+      this.fragment = fragment;
+      var loc = this.location;
+      var atRoot = loc.pathname.replace(/[^\/]$/, '$&/') === this.root;
+
+      // If we've started off with a route from a `pushState`-enabled browser,
+      // but we're currently in a browser that doesn't support it...
+      if (this._wantsHashChange && this._wantsPushState && !this._hasPushState && !atRoot) {
+        this.fragment = this.getFragment(null, true);
+        this.location.replace(this.root + this.location.search + '#' + this.fragment);
+        // Return immediately as browser will do redirect to new url
+        return true;
+
+      // Or if we've started out with a hash-based route, but we're currently
+      // in a browser where it could be `pushState`-based instead...
+      } else if (this._wantsPushState && this._hasPushState && atRoot && loc.hash) {
+        this.fragment = this.getHash().replace(routeStripper, '');
+        this.history.replaceState({}, document.title, this.root + this.fragment + loc.search);
+      }
+
+      if (!this.options.silent) return this.loadUrl();
+    },
+
+    // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
+    // but possibly useful for unit testing Routers.
+    stop: function() {
+      Backbone.$(window).off('popstate', this.checkUrl).off('hashchange', this.checkUrl);
+      clearInterval(this._checkUrlInterval);
+      History.started = false;
+    },
+
+    // Add a route to be tested when the fragment changes. Routes added later
+    // may override previous routes.
+    route: function(route, callback) {
+      this.handlers.unshift({route: route, callback: callback});
+    },
+
+    // Checks the current URL to see if it has changed, and if it has,
+    // calls `loadUrl`, normalizing across the hidden iframe.
+    checkUrl: function(e) {
+      var current = this.getFragment();
+      if (current === this.fragment && this.iframe) {
+        current = this.getFragment(this.getHash(this.iframe));
+      }
+      if (current === this.fragment) return false;
+      if (this.iframe) this.navigate(current);
+      this.loadUrl() || this.loadUrl(this.getHash());
+    },
+
+    // Attempt to load the current URL fragment. If a route succeeds with a
+    // match, returns `true`. If no defined routes matches the fragment,
+    // returns `false`.
+    loadUrl: function(fragmentOverride) {
+      var fragment = this.fragment = this.getFragment(fragmentOverride);
+      var matched = _.any(this.handlers, function(handler) {
+        if (handler.route.test(fragment)) {
+          handler.callback(fragment);
+          return true;
+        }
+      });
+      return matched;
+    },
+
+    // Save a fragment into the hash history, or replace the URL state if the
+    // 'replace' option is passed. You are responsible for properly URL-encoding
+    // the fragment in advance.
+    //
+    // The options object can contain `trigger: true` if you wish to have the
+    // route callback be fired (not usually desirable), or `replace: true`, if
+    // you wish to modify the current URL without adding an entry to the history.
+    navigate: function(fragment, options) {
+      if (!History.started) return false;
+      if (!options || options === true) options = {trigger: options};
+      fragment = this.getFragment(fragment || '');
+      if (this.fragment === fragment) return;
+      this.fragment = fragment;
+      var url = this.root + fragment;
+
+      // If pushState is available, we use it to set the fragment as a real URL.
+      if (this._hasPushState) {
+        this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url);
+
+      // If hash changes haven't been explicitly disabled, update the hash
+      // fragment to store history.
+      } else if (this._wantsHashChange) {
+        this._updateHash(this.location, fragment, options.replace);
+        if (this.iframe && (fragment !== this.getFragment(this.getHash(this.iframe)))) {
+          // Opening and closing the iframe tricks IE7 and earlier to push a
+          // history entry on hash-tag change.  When replace is true, we don't
+          // want this.
+          if(!options.replace) this.iframe.document.open().close();
+          this._updateHash(this.iframe.location, fragment, options.replace);
+        }
+
+      // If you've told us that you explicitly don't want fallback hashchange-
+      // based history, then `navigate` becomes a page refresh.
+      } else {
+        return this.location.assign(url);
+      }
+      if (options.trigger) this.loadUrl(fragment);
+    },
+
+    // Update the hash location, either replacing the current entry, or adding
+    // a new one to the browser history.
+    _updateHash: function(location, fragment, replace) {
+      if (replace) {
+        var href = location.href.replace(/(javascript:|#).*$/, '');
+        location.replace(href + '#' + fragment);
+      } else {
+        // Some browsers require that `hash` contains a leading #.
+        location.hash = '#' + fragment;
+      }
+    }
+
+  });
+
+  // Create the default Backbone.history.
+  Backbone.history = new History;
+
+  // Helpers
+  // -------
+
+  // Helper function to correctly set up the prototype chain, for subclasses.
+  // Similar to `goog.inherits`, but uses a hash of prototype properties and
+  // class properties to be extended.
+  var extend = function(protoProps, staticProps) {
+    var parent = this;
+    var child;
+
+    // The constructor function for the new subclass is either defined by you
+    // (the "constructor" property in your `extend` definition), or defaulted
+    // by us to simply call the parent's constructor.
+    if (protoProps && _.has(protoProps, 'constructor')) {
+      child = protoProps.constructor;
+    } else {
+      child = function(){ return parent.apply(this, arguments); };
+    }
+
+    // Add static properties to the constructor function, if supplied.
+    _.extend(child, parent, staticProps);
+
+    // Set the prototype chain to inherit from `parent`, without calling
+    // `parent`'s constructor function.
+    var Surrogate = function(){ this.constructor = child; };
+    Surrogate.prototype = parent.prototype;
+    child.prototype = new Surrogate;
+
+    // Add prototype properties (instance properties) to the subclass,
+    // if supplied.
+    if (protoProps) _.extend(child.prototype, protoProps);
+
+    // Set a convenience property in case the parent's prototype is needed
+    // later.
+    child.__super__ = parent.prototype;
+
+    return child;
+  };
+
+  // Set up inheritance for the model, collection, router, view and history.
+  Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend;
+
+  // Throw an error when a URL is needed, and none is supplied.
+  var urlError = function() {
+    throw new Error('A "url" property or function must be specified');
+  };
+
+  // Wrap an optional error callback with a fallback error event.
+  var wrapError = function (model, options) {
+    var error = options.error;
+    options.error = function(resp) {
+      if (error) error(model, resp, options);
+      model.trigger('error', model, resp, options);
+    };
+  };
+
+}).call(this);
diff --git a/services/chat/public/js/libs/jquery.js b/services/chat/public/js/libs/jquery.js
new file mode 100644
index 0000000000..309c3047e6
--- /dev/null
+++ b/services/chat/public/js/libs/jquery.js
@@ -0,0 +1,9478 @@
+/*!
+ * jQuery JavaScript Library v1.8.3
+ * http://jquery.com/
+ *
+ * Includes Sizzle.js
+ * http://sizzlejs.com/
+ *
+ * Copyright 2012 jQuery Foundation and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
+ *
+ * Date: Tue Nov 13 2012 08:20:33 GMT-0500 (Eastern Standard Time)
+ */
+define([], function() {
+return (function( window, undefined ) {
+var
+	// A central reference to the root jQuery(document)
+	rootjQuery,
+
+	// The deferred used on DOM ready
+	readyList,
+
+	// Use the correct document accordingly with window argument (sandbox)
+	document = window.document,
+	location = window.location,
+	navigator = window.navigator,
+
+	// Map over jQuery in case of overwrite
+	_jQuery = window.jQuery,
+
+	// Map over the $ in case of overwrite
+	_$ = window.$,
+
+	// Save a reference to some core methods
+	core_push = Array.prototype.push,
+	core_slice = Array.prototype.slice,
+	core_indexOf = Array.prototype.indexOf,
+	core_toString = Object.prototype.toString,
+	core_hasOwn = Object.prototype.hasOwnProperty,
+	core_trim = String.prototype.trim,
+
+	// Define a local copy of jQuery
+	jQuery = function( selector, context ) {
+		// The jQuery object is actually just the init constructor 'enhanced'
+		return new jQuery.fn.init( selector, context, rootjQuery );
+	},
+
+	// Used for matching numbers
+	core_pnum = /[\-+]?(?:\d*\.|)\d+(?:[eE][\-+]?\d+|)/.source,
+
+	// Used for detecting and trimming whitespace
+	core_rnotwhite = /\S/,
+	core_rspace = /\s+/,
+
+	// Make sure we trim BOM and NBSP (here's looking at you, Safari 5.0 and IE)
+	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,
+
+	// A simple way to check for HTML strings
+	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
+	rquickExpr = /^(?:[^#<]*(<[\w\W]+>)[^>]*$|#([\w\-]*)$)/,
+
+	// Match a standalone tag
+	rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>|)$/,
+
+	// JSON RegExp
+	rvalidchars = /^[\],:{}\s]*$/,
+	rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g,
+	rvalidescape = /\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g,
+	rvalidtokens = /"[^"\\\r\n]*"|true|false|null|-?(?:\d\d*\.|)\d+(?:[eE][\-+]?\d+|)/g,
+
+	// Matches dashed string for camelizing
+	rmsPrefix = /^-ms-/,
+	rdashAlpha = /-([\da-z])/gi,
+
+	// Used by jQuery.camelCase as callback to replace()
+	fcamelCase = function( all, letter ) {
+		return ( letter + "" ).toUpperCase();
+	},
+
+	// The ready event handler and self cleanup method
+	DOMContentLoaded = function() {
+		if ( document.addEventListener ) {
+			document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
+			jQuery.ready();
+		} else if ( document.readyState === "complete" ) {
+			// we're here because readyState === "complete" in oldIE
+			// which is good enough for us to call the dom ready!
+			document.detachEvent( "onreadystatechange", DOMContentLoaded );
+			jQuery.ready();
+		}
+	},
+
+	// [[Class]] -> type pairs
+	class2type = {};
+
+jQuery.fn = jQuery.prototype = {
+	constructor: jQuery,
+	init: function( selector, context, rootjQuery ) {
+		var match, elem, ret, doc;
+
+		// Handle $(""), $(null), $(undefined), $(false)
+		if ( !selector ) {
+			return this;
+		}
+
+		// Handle $(DOMElement)
+		if ( selector.nodeType ) {
+			this.context = this[0] = selector;
+			this.length = 1;
+			return this;
+		}
+
+		// Handle HTML strings
+		if ( typeof selector === "string" ) {
+			if ( selector.charAt(0) === "<" && selector.charAt( selector.length - 1 ) === ">" && selector.length >= 3 ) {
+				// Assume that strings that start and end with <> are HTML and skip the regex check
+				match = [ null, selector, null ];
+
+			} else {
+				match = rquickExpr.exec( selector );
+			}
+
+			// Match html or make sure no context is specified for #id
+			if ( match && (match[1] || !context) ) {
+
+				// HANDLE: $(html) -> $(array)
+				if ( match[1] ) {
+					context = context instanceof jQuery ? context[0] : context;
+					doc = ( context && context.nodeType ? context.ownerDocument || context : document );
+
+					// scripts is true for back-compat
+					selector = jQuery.parseHTML( match[1], doc, true );
+					if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) {
+						this.attr.call( selector, context, true );
+					}
+
+					return jQuery.merge( this, selector );
+
+				// HANDLE: $(#id)
+				} else {
+					elem = document.getElementById( match[2] );
+
+					// Check parentNode to catch when Blackberry 4.6 returns
+					// nodes that are no longer in the document #6963
+					if ( elem && elem.parentNode ) {
+						// Handle the case where IE and Opera return items
+						// by name instead of ID
+						if ( elem.id !== match[2] ) {
+							return rootjQuery.find( selector );
+						}
+
+						// Otherwise, we inject the element directly into the jQuery object
+						this.length = 1;
+						this[0] = elem;
+					}
+
+					this.context = document;
+					this.selector = selector;
+					return this;
+				}
+
+			// HANDLE: $(expr, $(...))
+			} else if ( !context || context.jquery ) {
+				return ( context || rootjQuery ).find( selector );
+
+			// HANDLE: $(expr, context)
+			// (which is just equivalent to: $(context).find(expr)
+			} else {
+				return this.constructor( context ).find( selector );
+			}
+
+		// HANDLE: $(function)
+		// Shortcut for document ready
+		} else if ( jQuery.isFunction( selector ) ) {
+			return rootjQuery.ready( selector );
+		}
+
+		if ( selector.selector !== undefined ) {
+			this.selector = selector.selector;
+			this.context = selector.context;
+		}
+
+		return jQuery.makeArray( selector, this );
+	},
+
+	// Start with an empty selector
+	selector: "",
+
+	// The current version of jQuery being used
+	jquery: "1.8.3chat",
+
+	// The default length of a jQuery object is 0
+	length: 0,
+
+	// The number of elements contained in the matched element set
+	size: function() {
+		return this.length;
+	},
+
+	toArray: function() {
+		return core_slice.call( this );
+	},
+
+	// Get the Nth element in the matched element set OR
+	// Get the whole matched element set as a clean array
+	get: function( num ) {
+		return num == null ?
+
+			// Return a 'clean' array
+			this.toArray() :
+
+			// Return just the object
+			( num < 0 ? this[ this.length + num ] : this[ num ] );
+	},
+
+	// Take an array of elements and push it onto the stack
+	// (returning the new matched element set)
+	pushStack: function( elems, name, selector ) {
+
+		// Build a new jQuery matched element set
+		var ret = jQuery.merge( this.constructor(), elems );
+
+		// Add the old object onto the stack (as a reference)
+		ret.prevObject = this;
+
+		ret.context = this.context;
+
+		if ( name === "find" ) {
+			ret.selector = this.selector + ( this.selector ? " " : "" ) + selector;
+		} else if ( name ) {
+			ret.selector = this.selector + "." + name + "(" + selector + ")";
+		}
+
+		// Return the newly-formed element set
+		return ret;
+	},
+
+	// Execute a callback for every element in the matched set.
+	// (You can seed the arguments with an array of args, but this is
+	// only used internally.)
+	each: function( callback, args ) {
+		return jQuery.each( this, callback, args );
+	},
+
+	ready: function( fn ) {
+		// Add the callback
+		jQuery.ready.promise().done( fn );
+
+		return this;
+	},
+
+	eq: function( i ) {
+		i = +i;
+		return i === -1 ?
+			this.slice( i ) :
+			this.slice( i, i + 1 );
+	},
+
+	first: function() {
+		return this.eq( 0 );
+	},
+
+	last: function() {
+		return this.eq( -1 );
+	},
+
+	slice: function() {
+		return this.pushStack( core_slice.apply( this, arguments ),
+			"slice", core_slice.call(arguments).join(",") );
+	},
+
+	map: function( callback ) {
+		return this.pushStack( jQuery.map(this, function( elem, i ) {
+			return callback.call( elem, i, elem );
+		}));
+	},
+
+	end: function() {
+		return this.prevObject || this.constructor(null);
+	},
+
+	// For internal use only.
+	// Behaves like an Array's method, not like a jQuery method.
+	push: core_push,
+	sort: [].sort,
+	splice: [].splice
+};
+
+// Give the init function the jQuery prototype for later instantiation
+jQuery.fn.init.prototype = jQuery.fn;
+
+jQuery.extend = jQuery.fn.extend = function() {
+	var options, name, src, copy, copyIsArray, clone,
+		target = arguments[0] || {},
+		i = 1,
+		length = arguments.length,
+		deep = false;
+
+	// Handle a deep copy situation
+	if ( typeof target === "boolean" ) {
+		deep = target;
+		target = arguments[1] || {};
+		// skip the boolean and the target
+		i = 2;
+	}
+
+	// Handle case when target is a string or something (possible in deep copy)
+	if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
+		target = {};
+	}
+
+	// extend jQuery itself if only one argument is passed
+	if ( length === i ) {
+		target = this;
+		--i;
+	}
+
+	for ( ; i < length; i++ ) {
+		// Only deal with non-null/undefined values
+		if ( (options = arguments[ i ]) != null ) {
+			// Extend the base object
+			for ( name in options ) {
+				src = target[ name ];
+				copy = options[ name ];
+
+				// Prevent never-ending loop
+				if ( target === copy ) {
+					continue;
+				}
+
+				// Recurse if we're merging plain objects or arrays
+				if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
+					if ( copyIsArray ) {
+						copyIsArray = false;
+						clone = src && jQuery.isArray(src) ? src : [];
+
+					} else {
+						clone = src && jQuery.isPlainObject(src) ? src : {};
+					}
+
+					// Never move original objects, clone them
+					target[ name ] = jQuery.extend( deep, clone, copy );
+
+				// Don't bring in undefined values
+				} else if ( copy !== undefined ) {
+					target[ name ] = copy;
+				}
+			}
+		}
+	}
+
+	// Return the modified object
+	return target;
+};
+
+jQuery.extend({
+	noConflict: function( deep ) {
+		if ( window.$ === jQuery ) {
+			window.$ = _$;
+		}
+
+		if ( deep && window.jQuery === jQuery ) {
+			window.jQuery = _jQuery;
+		}
+
+		return jQuery;
+	},
+
+	// Is the DOM ready to be used? Set to true once it occurs.
+	isReady: false,
+
+	// A counter to track how many items to wait for before
+	// the ready event fires. See #6781
+	readyWait: 1,
+
+	// Hold (or release) the ready event
+	holdReady: function( hold ) {
+		if ( hold ) {
+			jQuery.readyWait++;
+		} else {
+			jQuery.ready( true );
+		}
+	},
+
+	// Handle when the DOM is ready
+	ready: function( wait ) {
+
+		// Abort if there are pending holds or we're already ready
+		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
+			return;
+		}
+
+		// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
+		if ( !document.body ) {
+			return setTimeout( jQuery.ready, 1 );
+		}
+
+		// Remember that the DOM is ready
+		jQuery.isReady = true;
+
+		// If a normal DOM Ready event fired, decrement, and wait if need be
+		if ( wait !== true && --jQuery.readyWait > 0 ) {
+			return;
+		}
+
+		// If there are functions bound, to execute
+		readyList.resolveWith( document, [ jQuery ] );
+
+		// Trigger any bound ready events
+		if ( jQuery.fn.trigger ) {
+			jQuery( document ).trigger("ready").off("ready");
+		}
+	},
+
+	// See test/unit/core.js for details concerning isFunction.
+	// Since version 1.3, DOM methods and functions like alert
+	// aren't supported. They return false on IE (#2968).
+	isFunction: function( obj ) {
+		return jQuery.type(obj) === "function";
+	},
+
+	isArray: Array.isArray || function( obj ) {
+		return jQuery.type(obj) === "array";
+	},
+
+	isWindow: function( obj ) {
+		return obj != null && obj == obj.window;
+	},
+
+	isNumeric: function( obj ) {
+		return !isNaN( parseFloat(obj) ) && isFinite( obj );
+	},
+
+	type: function( obj ) {
+		return obj == null ?
+			String( obj ) :
+			class2type[ core_toString.call(obj) ] || "object";
+	},
+
+	isPlainObject: function( obj ) {
+		// Must be an Object.
+		// Because of IE, we also have to check the presence of the constructor property.
+		// Make sure that DOM nodes and window objects don't pass through, as well
+		if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
+			return false;
+		}
+
+		try {
+			// Not own constructor property must be Object
+			if ( obj.constructor &&
+				!core_hasOwn.call(obj, "constructor") &&
+				!core_hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) {
+				return false;
+			}
+		} catch ( e ) {
+			// IE8,9 Will throw exceptions on certain host objects #9897
+			return false;
+		}
+
+		// Own properties are enumerated firstly, so to speed up,
+		// if last one is own, then all properties are own.
+
+		var key;
+		for ( key in obj ) {}
+
+		return key === undefined || core_hasOwn.call( obj, key );
+	},
+
+	isEmptyObject: function( obj ) {
+		var name;
+		for ( name in obj ) {
+			return false;
+		}
+		return true;
+	},
+
+	error: function( msg ) {
+		throw new Error( msg );
+	},
+
+	// data: string of html
+	// context (optional): If specified, the fragment will be created in this context, defaults to document
+	// scripts (optional): If true, will include scripts passed in the html string
+	parseHTML: function( data, context, scripts ) {
+		var parsed;
+		if ( !data || typeof data !== "string" ) {
+			return null;
+		}
+		if ( typeof context === "boolean" ) {
+			scripts = context;
+			context = 0;
+		}
+		context = context || document;
+
+		// Single tag
+		if ( (parsed = rsingleTag.exec( data )) ) {
+			return [ context.createElement( parsed[1] ) ];
+		}
+
+		parsed = jQuery.buildFragment( [ data ], context, scripts ? null : [] );
+		return jQuery.merge( [],
+			(parsed.cacheable ? jQuery.clone( parsed.fragment ) : parsed.fragment).childNodes );
+	},
+
+	parseJSON: function( data ) {
+		if ( !data || typeof data !== "string") {
+			return null;
+		}
+
+		// Make sure leading/trailing whitespace is removed (IE can't handle it)
+		data = jQuery.trim( data );
+
+		// Attempt to parse using the native JSON parser first
+		if ( window.JSON && window.JSON.parse ) {
+			return window.JSON.parse( data );
+		}
+
+		// Make sure the incoming data is actual JSON
+		// Logic borrowed from http://json.org/json2.js
+		if ( rvalidchars.test( data.replace( rvalidescape, "@" )
+			.replace( rvalidtokens, "]" )
+			.replace( rvalidbraces, "")) ) {
+
+			return ( new Function( "return " + data ) )();
+
+		}
+		jQuery.error( "Invalid JSON: " + data );
+	},
+
+	// Cross-browser xml parsing
+	parseXML: function( data ) {
+		var xml, tmp;
+		if ( !data || typeof data !== "string" ) {
+			return null;
+		}
+		try {
+			if ( window.DOMParser ) { // Standard
+				tmp = new DOMParser();
+				xml = tmp.parseFromString( data , "text/xml" );
+			} else { // IE
+				xml = new ActiveXObject( "Microsoft.XMLDOM" );
+				xml.async = "false";
+				xml.loadXML( data );
+			}
+		} catch( e ) {
+			xml = undefined;
+		}
+		if ( !xml || !xml.documentElement || xml.getElementsByTagName( "parsererror" ).length ) {
+			jQuery.error( "Invalid XML: " + data );
+		}
+		return xml;
+	},
+
+	noop: function() {},
+
+	// Evaluates a script in a global context
+	// Workarounds based on findings by Jim Driscoll
+	// http://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context
+	globalEval: function( data ) {
+		if ( data && core_rnotwhite.test( data ) ) {
+			// We use execScript on Internet Explorer
+			// We use an anonymous function so that context is window
+			// rather than jQuery in Firefox
+			( window.execScript || function( data ) {
+				window[ "eval" ].call( window, data );
+			} )( data );
+		}
+	},
+
+	// Convert dashed to camelCase; used by the css and data modules
+	// Microsoft forgot to hump their vendor prefix (#9572)
+	camelCase: function( string ) {
+		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
+	},
+
+	nodeName: function( elem, name ) {
+		return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
+	},
+
+	// args is for internal usage only
+	each: function( obj, callback, args ) {
+		var name,
+			i = 0,
+			length = obj.length,
+			isObj = length === undefined || jQuery.isFunction( obj );
+
+		if ( args ) {
+			if ( isObj ) {
+				for ( name in obj ) {
+					if ( callback.apply( obj[ name ], args ) === false ) {
+						break;
+					}
+				}
+			} else {
+				for ( ; i < length; ) {
+					if ( callback.apply( obj[ i++ ], args ) === false ) {
+						break;
+					}
+				}
+			}
+
+		// A special, fast, case for the most common use of each
+		} else {
+			if ( isObj ) {
+				for ( name in obj ) {
+					if ( callback.call( obj[ name ], name, obj[ name ] ) === false ) {
+						break;
+					}
+				}
+			} else {
+				for ( ; i < length; ) {
+					if ( callback.call( obj[ i ], i, obj[ i++ ] ) === false ) {
+						break;
+					}
+				}
+			}
+		}
+
+		return obj;
+	},
+
+	// Use native String.trim function wherever possible
+	trim: core_trim && !core_trim.call("\uFEFF\xA0") ?
+		function( text ) {
+			return text == null ?
+				"" :
+				core_trim.call( text );
+		} :
+
+		// Otherwise use our own trimming functionality
+		function( text ) {
+			return text == null ?
+				"" :
+				( text + "" ).replace( rtrim, "" );
+		},
+
+	// results is for internal usage only
+	makeArray: function( arr, results ) {
+		var type,
+			ret = results || [];
+
+		if ( arr != null ) {
+			// The window, strings (and functions) also have 'length'
+			// Tweaked logic slightly to handle Blackberry 4.7 RegExp issues #6930
+			type = jQuery.type( arr );
+
+			if ( arr.length == null || type === "string" || type === "function" || type === "regexp" || jQuery.isWindow( arr ) ) {
+				core_push.call( ret, arr );
+			} else {
+				jQuery.merge( ret, arr );
+			}
+		}
+
+		return ret;
+	},
+
+	inArray: function( elem, arr, i ) {
+		var len;
+
+		if ( arr ) {
+			if ( core_indexOf ) {
+				return core_indexOf.call( arr, elem, i );
+			}
+
+			len = arr.length;
+			i = i ? i < 0 ? Math.max( 0, len + i ) : i : 0;
+
+			for ( ; i < len; i++ ) {
+				// Skip accessing in sparse arrays
+				if ( i in arr && arr[ i ] === elem ) {
+					return i;
+				}
+			}
+		}
+
+		return -1;
+	},
+
+	merge: function( first, second ) {
+		var l = second.length,
+			i = first.length,
+			j = 0;
+
+		if ( typeof l === "number" ) {
+			for ( ; j < l; j++ ) {
+				first[ i++ ] = second[ j ];
+			}
+
+		} else {
+			while ( second[j] !== undefined ) {
+				first[ i++ ] = second[ j++ ];
+			}
+		}
+
+		first.length = i;
+
+		return first;
+	},
+
+	grep: function( elems, callback, inv ) {
+		var retVal,
+			ret = [],
+			i = 0,
+			length = elems.length;
+		inv = !!inv;
+
+		// Go through the array, only saving the items
+		// that pass the validator function
+		for ( ; i < length; i++ ) {
+			retVal = !!callback( elems[ i ], i );
+			if ( inv !== retVal ) {
+				ret.push( elems[ i ] );
+			}
+		}
+
+		return ret;
+	},
+
+	// arg is for internal usage only
+	map: function( elems, callback, arg ) {
+		var value, key,
+			ret = [],
+			i = 0,
+			length = elems.length,
+			// jquery objects are treated as arrays
+			isArray = elems instanceof jQuery || length !== undefined && typeof length === "number" && ( ( length > 0 && elems[ 0 ] && elems[ length -1 ] ) || length === 0 || jQuery.isArray( elems ) ) ;
+
+		// Go through the array, translating each of the items to their
+		if ( isArray ) {
+			for ( ; i < length; i++ ) {
+				value = callback( elems[ i ], i, arg );
+
+				if ( value != null ) {
+					ret[ ret.length ] = value;
+				}
+			}
+
+		// Go through every key on the object,
+		} else {
+			for ( key in elems ) {
+				value = callback( elems[ key ], key, arg );
+
+				if ( value != null ) {
+					ret[ ret.length ] = value;
+				}
+			}
+		}
+
+		// Flatten any nested arrays
+		return ret.concat.apply( [], ret );
+	},
+
+	// A global GUID counter for objects
+	guid: 1,
+
+	// Bind a function to a context, optionally partially applying any
+	// arguments.
+	proxy: function( fn, context ) {
+		var tmp, args, proxy;
+
+		if ( typeof context === "string" ) {
+			tmp = fn[ context ];
+			context = fn;
+			fn = tmp;
+		}
+
+		// Quick check to determine if target is callable, in the spec
+		// this throws a TypeError, but we will just return undefined.
+		if ( !jQuery.isFunction( fn ) ) {
+			return undefined;
+		}
+
+		// Simulated bind
+		args = core_slice.call( arguments, 2 );
+		proxy = function() {
+			return fn.apply( context, args.concat( core_slice.call( arguments ) ) );
+		};
+
+		// Set the guid of unique handler to the same of original handler, so it can be removed
+		proxy.guid = fn.guid = fn.guid || jQuery.guid++;
+
+		return proxy;
+	},
+
+	// Multifunctional method to get and set values of a collection
+	// The value/s can optionally be executed if it's a function
+	access: function( elems, fn, key, value, chainable, emptyGet, pass ) {
+		var exec,
+			bulk = key == null,
+			i = 0,
+			length = elems.length;
+
+		// Sets many values
+		if ( key && typeof key === "object" ) {
+			for ( i in key ) {
+				jQuery.access( elems, fn, i, key[i], 1, emptyGet, value );
+			}
+			chainable = 1;
+
+		// Sets one value
+		} else if ( value !== undefined ) {
+			// Optionally, function values get executed if exec is true
+			exec = pass === undefined && jQuery.isFunction( value );
+
+			if ( bulk ) {
+				// Bulk operations only iterate when executing function values
+				if ( exec ) {
+					exec = fn;
+					fn = function( elem, key, value ) {
+						return exec.call( jQuery( elem ), value );
+					};
+
+				// Otherwise they run against the entire set
+				} else {
+					fn.call( elems, value );
+					fn = null;
+				}
+			}
+
+			if ( fn ) {
+				for (; i < length; i++ ) {
+					fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass );
+				}
+			}
+
+			chainable = 1;
+		}
+
+		return chainable ?
+			elems :
+
+			// Gets
+			bulk ?
+				fn.call( elems ) :
+				length ? fn( elems[0], key ) : emptyGet;
+	},
+
+	now: function() {
+		return ( new Date() ).getTime();
+	}
+});
+
+jQuery.ready.promise = function( obj ) {
+	if ( !readyList ) {
+
+		readyList = jQuery.Deferred();
+
+		// Catch cases where $(document).ready() is called after the browser event has already occurred.
+		// we once tried to use readyState "interactive" here, but it caused issues like the one
+		// discovered by ChrisS here: http://bugs.jquery.com/ticket/12282#comment:15
+		if ( document.readyState === "complete" ) {
+			// Handle it asynchronously to allow scripts the opportunity to delay ready
+			setTimeout( jQuery.ready, 1 );
+
+		// Standards-based browsers support DOMContentLoaded
+		} else if ( document.addEventListener ) {
+			// Use the handy event callback
+			document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false );
+
+			// A fallback to window.onload, that will always work
+			window.addEventListener( "load", jQuery.ready, false );
+
+		// If IE event model is used
+		} else {
+			// Ensure firing before onload, maybe late but safe also for iframes
+			document.attachEvent( "onreadystatechange", DOMContentLoaded );
+
+			// A fallback to window.onload, that will always work
+			window.attachEvent( "onload", jQuery.ready );
+
+			// If IE and not a frame
+			// continually check to see if the document is ready
+			var top = false;
+
+			try {
+				top = window.frameElement == null && document.documentElement;
+			} catch(e) {}
+
+			if ( top && top.doScroll ) {
+				(function doScrollCheck() {
+					if ( !jQuery.isReady ) {
+
+						try {
+							// Use the trick by Diego Perini
+							// http://javascript.nwbox.com/IEContentLoaded/
+							top.doScroll("left");
+						} catch(e) {
+							return setTimeout( doScrollCheck, 50 );
+						}
+
+						// and execute any waiting functions
+						jQuery.ready();
+					}
+				})();
+			}
+		}
+	}
+	return readyList.promise( obj );
+};
+
+// Populate the class2type map
+jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) {
+	class2type[ "[object " + name + "]" ] = name.toLowerCase();
+});
+
+// All jQuery objects should point back to these
+rootjQuery = jQuery(document);
+// String to Object options format cache
+var optionsCache = {};
+
+// Convert String-formatted options into Object-formatted ones and store in cache
+function createOptions( options ) {
+	var object = optionsCache[ options ] = {};
+	jQuery.each( options.split( core_rspace ), function( _, flag ) {
+		object[ flag ] = true;
+	});
+	return object;
+}
+
+/*
+ * Create a callback list using the following parameters:
+ *
+ *	options: an optional list of space-separated options that will change how
+ *			the callback list behaves or a more traditional option object
+ *
+ * By default a callback list will act like an event callback list and can be
+ * "fired" multiple times.
+ *
+ * Possible options:
+ *
+ *	once:			will ensure the callback list can only be fired once (like a Deferred)
+ *
+ *	memory:			will keep track of previous values and will call any callback added
+ *					after the list has been fired right away with the latest "memorized"
+ *					values (like a Deferred)
+ *
+ *	unique:			will ensure a callback can only be added once (no duplicate in the list)
+ *
+ *	stopOnFalse:	interrupt callings when a callback returns false
+ *
+ */
+jQuery.Callbacks = function( options ) {
+
+	// Convert options from String-formatted to Object-formatted if needed
+	// (we check in cache first)
+	options = typeof options === "string" ?
+		( optionsCache[ options ] || createOptions( options ) ) :
+		jQuery.extend( {}, options );
+
+	var // Last fire value (for non-forgettable lists)
+		memory,
+		// Flag to know if list was already fired
+		fired,
+		// Flag to know if list is currently firing
+		firing,
+		// First callback to fire (used internally by add and fireWith)
+		firingStart,
+		// End of the loop when firing
+		firingLength,
+		// Index of currently firing callback (modified by remove if needed)
+		firingIndex,
+		// Actual callback list
+		list = [],
+		// Stack of fire calls for repeatable lists
+		stack = !options.once && [],
+		// Fire callbacks
+		fire = function( data ) {
+			memory = options.memory && data;
+			fired = true;
+			firingIndex = firingStart || 0;
+			firingStart = 0;
+			firingLength = list.length;
+			firing = true;
+			for ( ; list && firingIndex < firingLength; firingIndex++ ) {
+				if ( list[ firingIndex ].apply( data[ 0 ], data[ 1 ] ) === false && options.stopOnFalse ) {
+					memory = false; // To prevent further calls using add
+					break;
+				}
+			}
+			firing = false;
+			if ( list ) {
+				if ( stack ) {
+					if ( stack.length ) {
+						fire( stack.shift() );
+					}
+				} else if ( memory ) {
+					list = [];
+				} else {
+					self.disable();
+				}
+			}
+		},
+		// Actual Callbacks object
+		self = {
+			// Add a callback or a collection of callbacks to the list
+			add: function() {
+				if ( list ) {
+					// First, we save the current length
+					var start = list.length;
+					(function add( args ) {
+						jQuery.each( args, function( _, arg ) {
+							var type = jQuery.type( arg );
+							if ( type === "function" ) {
+								if ( !options.unique || !self.has( arg ) ) {
+									list.push( arg );
+								}
+							} else if ( arg && arg.length && type !== "string" ) {
+								// Inspect recursively
+								add( arg );
+							}
+						});
+					})( arguments );
+					// Do we need to add the callbacks to the
+					// current firing batch?
+					if ( firing ) {
+						firingLength = list.length;
+					// With memory, if we're not firing then
+					// we should call right away
+					} else if ( memory ) {
+						firingStart = start;
+						fire( memory );
+					}
+				}
+				return this;
+			},
+			// Remove a callback from the list
+			remove: function() {
+				if ( list ) {
+					jQuery.each( arguments, function( _, arg ) {
+						var index;
+						while( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
+							list.splice( index, 1 );
+							// Handle firing indexes
+							if ( firing ) {
+								if ( index <= firingLength ) {
+									firingLength--;
+								}
+								if ( index <= firingIndex ) {
+									firingIndex--;
+								}
+							}
+						}
+					});
+				}
+				return this;
+			},
+			// Control if a given callback is in the list
+			has: function( fn ) {
+				return jQuery.inArray( fn, list ) > -1;
+			},
+			// Remove all callbacks from the list
+			empty: function() {
+				list = [];
+				return this;
+			},
+			// Have the list do nothing anymore
+			disable: function() {
+				list = stack = memory = undefined;
+				return this;
+			},
+			// Is it disabled?
+			disabled: function() {
+				return !list;
+			},
+			// Lock the list in its current state
+			lock: function() {
+				stack = undefined;
+				if ( !memory ) {
+					self.disable();
+				}
+				return this;
+			},
+			// Is it locked?
+			locked: function() {
+				return !stack;
+			},
+			// Call all callbacks with the given context and arguments
+			fireWith: function( context, args ) {
+				args = args || [];
+				args = [ context, args.slice ? args.slice() : args ];
+				if ( list && ( !fired || stack ) ) {
+					if ( firing ) {
+						stack.push( args );
+					} else {
+						fire( args );
+					}
+				}
+				return this;
+			},
+			// Call all the callbacks with the given arguments
+			fire: function() {
+				self.fireWith( this, arguments );
+				return this;
+			},
+			// To know if the callbacks have already been called at least once
+			fired: function() {
+				return !!fired;
+			}
+		};
+
+	return self;
+};
+jQuery.extend({
+
+	Deferred: function( func ) {
+		var tuples = [
+				// action, add listener, listener list, final state
+				[ "resolve", "done", jQuery.Callbacks("once memory"), "resolved" ],
+				[ "reject", "fail", jQuery.Callbacks("once memory"), "rejected" ],
+				[ "notify", "progress", jQuery.Callbacks("memory") ]
+			],
+			state = "pending",
+			promise = {
+				state: function() {
+					return state;
+				},
+				always: function() {
+					deferred.done( arguments ).fail( arguments );
+					return this;
+				},
+				then: function( /* fnDone, fnFail, fnProgress */ ) {
+					var fns = arguments;
+					return jQuery.Deferred(function( newDefer ) {
+						jQuery.each( tuples, function( i, tuple ) {
+							var action = tuple[ 0 ],
+								fn = fns[ i ];
+							// deferred[ done | fail | progress ] for forwarding actions to newDefer
+							deferred[ tuple[1] ]( jQuery.isFunction( fn ) ?
+								function() {
+									var returned = fn.apply( this, arguments );
+									if ( returned && jQuery.isFunction( returned.promise ) ) {
+										returned.promise()
+											.done( newDefer.resolve )
+											.fail( newDefer.reject )
+											.progress( newDefer.notify );
+									} else {
+										newDefer[ action + "With" ]( this === deferred ? newDefer : this, [ returned ] );
+									}
+								} :
+								newDefer[ action ]
+							);
+						});
+						fns = null;
+					}).promise();
+				},
+				// Get a promise for this deferred
+				// If obj is provided, the promise aspect is added to the object
+				promise: function( obj ) {
+					return obj != null ? jQuery.extend( obj, promise ) : promise;
+				}
+			},
+			deferred = {};
+
+		// Keep pipe for back-compat
+		promise.pipe = promise.then;
+
+		// Add list-specific methods
+		jQuery.each( tuples, function( i, tuple ) {
+			var list = tuple[ 2 ],
+				stateString = tuple[ 3 ];
+
+			// promise[ done | fail | progress ] = list.add
+			promise[ tuple[1] ] = list.add;
+
+			// Handle state
+			if ( stateString ) {
+				list.add(function() {
+					// state = [ resolved | rejected ]
+					state = stateString;
+
+				// [ reject_list | resolve_list ].disable; progress_list.lock
+				}, tuples[ i ^ 1 ][ 2 ].disable, tuples[ 2 ][ 2 ].lock );
+			}
+
+			// deferred[ resolve | reject | notify ] = list.fire
+			deferred[ tuple[0] ] = list.fire;
+			deferred[ tuple[0] + "With" ] = list.fireWith;
+		});
+
+		// Make the deferred a promise
+		promise.promise( deferred );
+
+		// Call given func if any
+		if ( func ) {
+			func.call( deferred, deferred );
+		}
+
+		// All done!
+		return deferred;
+	},
+
+	// Deferred helper
+	when: function( subordinate /* , ..., subordinateN */ ) {
+		var i = 0,
+			resolveValues = core_slice.call( arguments ),
+			length = resolveValues.length,
+
+			// the count of uncompleted subordinates
+			remaining = length !== 1 || ( subordinate && jQuery.isFunction( subordinate.promise ) ) ? length : 0,
+
+			// the master Deferred. If resolveValues consist of only a single Deferred, just use that.
+			deferred = remaining === 1 ? subordinate : jQuery.Deferred(),
+
+			// Update function for both resolve and progress values
+			updateFunc = function( i, contexts, values ) {
+				return function( value ) {
+					contexts[ i ] = this;
+					values[ i ] = arguments.length > 1 ? core_slice.call( arguments ) : value;
+					if( values === progressValues ) {
+						deferred.notifyWith( contexts, values );
+					} else if ( !( --remaining ) ) {
+						deferred.resolveWith( contexts, values );
+					}
+				};
+			},
+
+			progressValues, progressContexts, resolveContexts;
+
+		// add listeners to Deferred subordinates; treat others as resolved
+		if ( length > 1 ) {
+			progressValues = new Array( length );
+			progressContexts = new Array( length );
+			resolveContexts = new Array( length );
+			for ( ; i < length; i++ ) {
+				if ( resolveValues[ i ] && jQuery.isFunction( resolveValues[ i ].promise ) ) {
+					resolveValues[ i ].promise()
+						.done( updateFunc( i, resolveContexts, resolveValues ) )
+						.fail( deferred.reject )
+						.progress( updateFunc( i, progressContexts, progressValues ) );
+				} else {
+					--remaining;
+				}
+			}
+		}
+
+		// if we're not waiting on anything, resolve the master
+		if ( !remaining ) {
+			deferred.resolveWith( resolveContexts, resolveValues );
+		}
+
+		return deferred.promise();
+	}
+});
+jQuery.support = (function() {
+
+	var support,
+		all,
+		a,
+		select,
+		opt,
+		input,
+		fragment,
+		eventName,
+		i,
+		isSupported,
+		clickFn,
+		div = document.createElement("div");
+
+	// Setup
+	div.setAttribute( "className", "t" );
+	div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
+
+	// Support tests won't run in some limited or non-browser environments
+	all = div.getElementsByTagName("*");
+	a = div.getElementsByTagName("a")[ 0 ];
+	if ( !all || !a || !all.length ) {
+		return {};
+	}
+
+	// First batch of tests
+	select = document.createElement("select");
+	opt = select.appendChild( document.createElement("option") );
+	input = div.getElementsByTagName("input")[ 0 ];
+
+	a.style.cssText = "top:1px;float:left;opacity:.5";
+	support = {
+		// IE strips leading whitespace when .innerHTML is used
+		leadingWhitespace: ( div.firstChild.nodeType === 3 ),
+
+		// Make sure that tbody elements aren't automatically inserted
+		// IE will insert them into empty tables
+		tbody: !div.getElementsByTagName("tbody").length,
+
+		// Make sure that link elements get serialized correctly by innerHTML
+		// This requires a wrapper element in IE
+		htmlSerialize: !!div.getElementsByTagName("link").length,
+
+		// Get the style information from getAttribute
+		// (IE uses .cssText instead)
+		style: /top/.test( a.getAttribute("style") ),
+
+		// Make sure that URLs aren't manipulated
+		// (IE normalizes it by default)
+		hrefNormalized: ( a.getAttribute("href") === "/a" ),
+
+		// Make sure that element opacity exists
+		// (IE uses filter instead)
+		// Use a regex to work around a WebKit issue. See #5145
+		opacity: /^0.5/.test( a.style.opacity ),
+
+		// Verify style float existence
+		// (IE uses styleFloat instead of cssFloat)
+		cssFloat: !!a.style.cssFloat,
+
+		// Make sure that if no value is specified for a checkbox
+		// that it defaults to "on".
+		// (WebKit defaults to "" instead)
+		checkOn: ( input.value === "on" ),
+
+		// Make sure that a selected-by-default option has a working selected property.
+		// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
+		optSelected: opt.selected,
+
+		// Test setAttribute on camelCase class. If it works, we need attrFixes when doing get/setAttribute (ie6/7)
+		getSetAttribute: div.className !== "t",
+
+		// Tests for enctype support on a form (#6743)
+		enctype: !!document.createElement("form").enctype,
+
+		// Makes sure cloning an html5 element does not cause problems
+		// Where outerHTML is undefined, this still works
+		html5Clone: document.createElement("nav").cloneNode( true ).outerHTML !== "<:nav></:nav>",
+
+		// jQuery.support.boxModel DEPRECATED in 1.8 since we don't support Quirks Mode
+		boxModel: ( document.compatMode === "CSS1Compat" ),
+
+		// Will be defined later
+		submitBubbles: true,
+		changeBubbles: true,
+		focusinBubbles: false,
+		deleteExpando: true,
+		noCloneEvent: true,
+		inlineBlockNeedsLayout: false,
+		shrinkWrapBlocks: false,
+		reliableMarginRight: true,
+		boxSizingReliable: true,
+		pixelPosition: false
+	};
+
+	// Make sure checked status is properly cloned
+	input.checked = true;
+	support.noCloneChecked = input.cloneNode( true ).checked;
+
+	// Make sure that the options inside disabled selects aren't marked as disabled
+	// (WebKit marks them as disabled)
+	select.disabled = true;
+	support.optDisabled = !opt.disabled;
+
+	// Test to see if it's possible to delete an expando from an element
+	// Fails in Internet Explorer
+	try {
+		delete div.test;
+	} catch( e ) {
+		support.deleteExpando = false;
+	}
+
+	if ( !div.addEventListener && div.attachEvent && div.fireEvent ) {
+		div.attachEvent( "onclick", clickFn = function() {
+			// Cloning a node shouldn't copy over any
+			// bound event handlers (IE does this)
+			support.noCloneEvent = false;
+		});
+		div.cloneNode( true ).fireEvent("onclick");
+		div.detachEvent( "onclick", clickFn );
+	}
+
+	// Check if a radio maintains its value
+	// after being appended to the DOM
+	input = document.createElement("input");
+	input.value = "t";
+	input.setAttribute( "type", "radio" );
+	support.radioValue = input.value === "t";
+
+	input.setAttribute( "checked", "checked" );
+
+	// #11217 - WebKit loses check when the name is after the checked attribute
+	input.setAttribute( "name", "t" );
+
+	div.appendChild( input );
+	fragment = document.createDocumentFragment();
+	fragment.appendChild( div.lastChild );
+
+	// WebKit doesn't clone checked state correctly in fragments
+	support.checkClone = fragment.cloneNode( true ).cloneNode( true ).lastChild.checked;
+
+	// Check if a disconnected checkbox will retain its checked
+	// value of true after appended to the DOM (IE6/7)
+	support.appendChecked = input.checked;
+
+	fragment.removeChild( input );
+	fragment.appendChild( div );
+
+	// Technique from Juriy Zaytsev
+	// http://perfectionkills.com/detecting-event-support-without-browser-sniffing/
+	// We only care about the case where non-standard event systems
+	// are used, namely in IE. Short-circuiting here helps us to
+	// avoid an eval call (in setAttribute) which can cause CSP
+	// to go haywire. See: https://developer.mozilla.org/en/Security/CSP
+	if ( div.attachEvent ) {
+		for ( i in {
+			submit: true,
+			change: true,
+			focusin: true
+		}) {
+			eventName = "on" + i;
+			isSupported = ( eventName in div );
+			if ( !isSupported ) {
+				div.setAttribute( eventName, "return;" );
+				isSupported = ( typeof div[ eventName ] === "function" );
+			}
+			support[ i + "Bubbles" ] = isSupported;
+		}
+	}
+
+	// Run tests that need a body at doc ready
+	jQuery(function() {
+		var container, div, tds, marginDiv,
+			divReset = "padding:0;margin:0;border:0;display:block;overflow:hidden;",
+			body = document.getElementsByTagName("body")[0];
+
+		if ( !body ) {
+			// Return for frameset docs that don't have a body
+			return;
+		}
+
+		container = document.createElement("div");
+		container.style.cssText = "visibility:hidden;border:0;width:0;height:0;position:static;top:0;margin-top:1px";
+		body.insertBefore( container, body.firstChild );
+
+		// Construct the test element
+		div = document.createElement("div");
+		container.appendChild( div );
+
+		// Check if table cells still have offsetWidth/Height when they are set
+		// to display:none and there are still other visible table cells in a
+		// table row; if so, offsetWidth/Height are not reliable for use when
+		// determining if an element has been hidden directly using
+		// display:none (it is still safe to use offsets if a parent element is
+		// hidden; don safety goggles and see bug #4512 for more information).
+		// (only IE 8 fails this test)
+		div.innerHTML = "<table><tr><td></td><td>t</td></tr></table>";
+		tds = div.getElementsByTagName("td");
+		tds[ 0 ].style.cssText = "padding:0;margin:0;border:0;display:none";
+		isSupported = ( tds[ 0 ].offsetHeight === 0 );
+
+		tds[ 0 ].style.display = "";
+		tds[ 1 ].style.display = "none";
+
+		// Check if empty table cells still have offsetWidth/Height
+		// (IE <= 8 fail this test)
+		support.reliableHiddenOffsets = isSupported && ( tds[ 0 ].offsetHeight === 0 );
+
+		// Check box-sizing and margin behavior
+		div.innerHTML = "";
+		div.style.cssText = "box-sizing:border-box;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;position:absolute;top:1%;";
+		support.boxSizing = ( div.offsetWidth === 4 );
+		support.doesNotIncludeMarginInBodyOffset = ( body.offsetTop !== 1 );
+
+		// NOTE: To any future maintainer, we've window.getComputedStyle
+		// because jsdom on node.js will break without it.
+		if ( window.getComputedStyle ) {
+			support.pixelPosition = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
+			support.boxSizingReliable = ( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";
+
+			// Check if div with explicit width and no margin-right incorrectly
+			// gets computed margin-right based on width of container. For more
+			// info see bug #3333
+			// Fails in WebKit before Feb 2011 nightlies
+			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
+			marginDiv = document.createElement("div");
+			marginDiv.style.cssText = div.style.cssText = divReset;
+			marginDiv.style.marginRight = marginDiv.style.width = "0";
+			div.style.width = "1px";
+			div.appendChild( marginDiv );
+			support.reliableMarginRight =
+				!parseFloat( ( window.getComputedStyle( marginDiv, null ) || {} ).marginRight );
+		}
+
+		if ( typeof div.style.zoom !== "undefined" ) {
+			// Check if natively block-level elements act like inline-block
+			// elements when setting their display to 'inline' and giving
+			// them layout
+			// (IE < 8 does this)
+			div.innerHTML = "";
+			div.style.cssText = divReset + "width:1px;padding:1px;display:inline;zoom:1";
+			support.inlineBlockNeedsLayout = ( div.offsetWidth === 3 );
+
+			// Check if elements with layout shrink-wrap their children
+			// (IE 6 does this)
+			div.style.display = "block";
+			div.style.overflow = "visible";
+			div.innerHTML = "<div></div>";
+			div.firstChild.style.width = "5px";
+			support.shrinkWrapBlocks = ( div.offsetWidth !== 3 );
+
+			container.style.zoom = 1;
+		}
+
+		// Null elements to avoid leaks in IE
+		body.removeChild( container );
+		container = div = tds = marginDiv = null;
+	});
+
+	// Null elements to avoid leaks in IE
+	fragment.removeChild( div );
+	all = a = select = opt = input = fragment = div = null;
+
+	return support;
+})();
+var rbrace = /(?:\{[\s\S]*\}|\[[\s\S]*\])$/,
+	rmultiDash = /([A-Z])/g;
+
+jQuery.extend({
+	cache: {},
+
+	deletedIds: [],
+
+	// Remove at next major release (1.9/2.0)
+	uuid: 0,
+
+	// Unique for each copy of jQuery on the page
+	// Non-digits removed to match rinlinejQuery
+	expando: "jQuery" + ( jQuery.fn.jquery + Math.random() ).replace( /\D/g, "" ),
+
+	// The following elements throw uncatchable exceptions if you
+	// attempt to add expando properties to them.
+	noData: {
+		"embed": true,
+		// Ban all objects except for Flash (which handle expandos)
+		"object": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000",
+		"applet": true
+	},
+
+	hasData: function( elem ) {
+		elem = elem.nodeType ? jQuery.cache[ elem[jQuery.expando] ] : elem[ jQuery.expando ];
+		return !!elem && !isEmptyDataObject( elem );
+	},
+
+	data: function( elem, name, data, pvt /* Internal Use Only */ ) {
+		if ( !jQuery.acceptData( elem ) ) {
+			return;
+		}
+
+		var thisCache, ret,
+			internalKey = jQuery.expando,
+			getByName = typeof name === "string",
+
+			// We have to handle DOM nodes and JS objects differently because IE6-7
+			// can't GC object references properly across the DOM-JS boundary
+			isNode = elem.nodeType,
+
+			// Only DOM nodes need the global jQuery cache; JS object data is
+			// attached directly to the object so GC can occur automatically
+			cache = isNode ? jQuery.cache : elem,
+
+			// Only defining an ID for JS objects if its cache already exists allows
+			// the code to shortcut on the same path as a DOM node with no cache
+			id = isNode ? elem[ internalKey ] : elem[ internalKey ] && internalKey;
+
+		// Avoid doing any more work than we need to when trying to get data on an
+		// object that has no data at all
+		if ( (!id || !cache[id] || (!pvt && !cache[id].data)) && getByName && data === undefined ) {
+			return;
+		}
+
+		if ( !id ) {
+			// Only DOM nodes need a new unique ID for each element since their data
+			// ends up in the global cache
+			if ( isNode ) {
+				elem[ internalKey ] = id = jQuery.deletedIds.pop() || jQuery.guid++;
+			} else {
+				id = internalKey;
+			}
+		}
+
+		if ( !cache[ id ] ) {
+			cache[ id ] = {};
+
+			// Avoids exposing jQuery metadata on plain JS objects when the object
+			// is serialized using JSON.stringify
+			if ( !isNode ) {
+				cache[ id ].toJSON = jQuery.noop;
+			}
+		}
+
+		// An object can be passed to jQuery.data instead of a key/value pair; this gets
+		// shallow copied over onto the existing cache
+		if ( typeof name === "object" || typeof name === "function" ) {
+			if ( pvt ) {
+				cache[ id ] = jQuery.extend( cache[ id ], name );
+			} else {
+				cache[ id ].data = jQuery.extend( cache[ id ].data, name );
+			}
+		}
+
+		thisCache = cache[ id ];
+
+		// jQuery data() is stored in a separate object inside the object's internal data
+		// cache in order to avoid key collisions between internal data and user-defined
+		// data.
+		if ( !pvt ) {
+			if ( !thisCache.data ) {
+				thisCache.data = {};
+			}
+
+			thisCache = thisCache.data;
+		}
+
+		if ( data !== undefined ) {
+			thisCache[ jQuery.camelCase( name ) ] = data;
+		}
+
+		// Check for both converted-to-camel and non-converted data property names
+		// If a data property was specified
+		if ( getByName ) {
+
+			// First Try to find as-is property data
+			ret = thisCache[ name ];
+
+			// Test for null|undefined property data
+			if ( ret == null ) {
+
+				// Try to find the camelCased property
+				ret = thisCache[ jQuery.camelCase( name ) ];
+			}
+		} else {
+			ret = thisCache;
+		}
+
+		return ret;
+	},
+
+	removeData: function( elem, name, pvt /* Internal Use Only */ ) {
+		if ( !jQuery.acceptData( elem ) ) {
+			return;
+		}
+
+		var thisCache, i, l,
+
+			isNode = elem.nodeType,
+
+			// See jQuery.data for more information
+			cache = isNode ? jQuery.cache : elem,
+			id = isNode ? elem[ jQuery.expando ] : jQuery.expando;
+
+		// If there is already no cache entry for this object, there is no
+		// purpose in continuing
+		if ( !cache[ id ] ) {
+			return;
+		}
+
+		if ( name ) {
+
+			thisCache = pvt ? cache[ id ] : cache[ id ].data;
+
+			if ( thisCache ) {
+
+				// Support array or space separated string names for data keys
+				if ( !jQuery.isArray( name ) ) {
+
+					// try the string as a key before any manipulation
+					if ( name in thisCache ) {
+						name = [ name ];
+					} else {
+
+						// split the camel cased version by spaces unless a key with the spaces exists
+						name = jQuery.camelCase( name );
+						if ( name in thisCache ) {
+							name = [ name ];
+						} else {
+							name = name.split(" ");
+						}
+					}
+				}
+
+				for ( i = 0, l = name.length; i < l; i++ ) {
+					delete thisCache[ name[i] ];
+				}
+
+				// If there is no data left in the cache, we want to continue
+				// and let the cache object itself get destroyed
+				if ( !( pvt ? isEmptyDataObject : jQuery.isEmptyObject )( thisCache ) ) {
+					return;
+				}
+			}
+		}
+
+		// See jQuery.data for more information
+		if ( !pvt ) {
+			delete cache[ id ].data;
+
+			// Don't destroy the parent cache unless the internal data object
+			// had been the only thing left in it
+			if ( !isEmptyDataObject( cache[ id ] ) ) {
+				return;
+			}
+		}
+
+		// Destroy the cache
+		if ( isNode ) {
+			jQuery.cleanData( [ elem ], true );
+
+		// Use delete when supported for expandos or `cache` is not a window per isWindow (#10080)
+		} else if ( jQuery.support.deleteExpando || cache != cache.window ) {
+			delete cache[ id ];
+
+		// When all else fails, null
+		} else {
+			cache[ id ] = null;
+		}
+	},
+
+	// For internal use only.
+	_data: function( elem, name, data ) {
+		return jQuery.data( elem, name, data, true );
+	},
+
+	// A method for determining if a DOM node can handle the data expando
+	acceptData: function( elem ) {
+		var noData = elem.nodeName && jQuery.noData[ elem.nodeName.toLowerCase() ];
+
+		// nodes accept data unless otherwise specified; rejection can be conditional
+		return !noData || noData !== true && elem.getAttribute("classid") === noData;
+	}
+});
+
+jQuery.fn.extend({
+	data: function( key, value ) {
+		var parts, part, attr, name, l,
+			elem = this[0],
+			i = 0,
+			data = null;
+
+		// Gets all values
+		if ( key === undefined ) {
+			if ( this.length ) {
+				data = jQuery.data( elem );
+
+				if ( elem.nodeType === 1 && !jQuery._data( elem, "parsedAttrs" ) ) {
+					attr = elem.attributes;
+					for ( l = attr.length; i < l; i++ ) {
+						name = attr[i].name;
+
+						if ( !name.indexOf( "data-" ) ) {
+							name = jQuery.camelCase( name.substring(5) );
+
+							dataAttr( elem, name, data[ name ] );
+						}
+					}
+					jQuery._data( elem, "parsedAttrs", true );
+				}
+			}
+
+			return data;
+		}
+
+		// Sets multiple values
+		if ( typeof key === "object" ) {
+			return this.each(function() {
+				jQuery.data( this, key );
+			});
+		}
+
+		parts = key.split( ".", 2 );
+		parts[1] = parts[1] ? "." + parts[1] : "";
+		part = parts[1] + "!";
+
+		return jQuery.access( this, function( value ) {
+
+			if ( value === undefined ) {
+				data = this.triggerHandler( "getData" + part, [ parts[0] ] );
+
+				// Try to fetch any internally stored data first
+				if ( data === undefined && elem ) {
+					data = jQuery.data( elem, key );
+					data = dataAttr( elem, key, data );
+				}
+
+				return data === undefined && parts[1] ?
+					this.data( parts[0] ) :
+					data;
+			}
+
+			parts[1] = value;
+			this.each(function() {
+				var self = jQuery( this );
+
+				self.triggerHandler( "setData" + part, parts );
+				jQuery.data( this, key, value );
+				self.triggerHandler( "changeData" + part, parts );
+			});
+		}, null, value, arguments.length > 1, null, false );
+	},
+
+	removeData: function( key ) {
+		return this.each(function() {
+			jQuery.removeData( this, key );
+		});
+	}
+});
+
+function dataAttr( elem, key, data ) {
+	// If nothing was found internally, try to fetch any
+	// data from the HTML5 data-* attribute
+	if ( data === undefined && elem.nodeType === 1 ) {
+
+		var name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase();
+
+		data = elem.getAttribute( name );
+
+		if ( typeof data === "string" ) {
+			try {
+				data = data === "true" ? true :
+				data === "false" ? false :
+				data === "null" ? null :
+				// Only convert to a number if it doesn't change the string
+				+data + "" === data ? +data :
+				rbrace.test( data ) ? jQuery.parseJSON( data ) :
+					data;
+			} catch( e ) {}
+
+			// Make sure we set the data so it isn't changed later
+			jQuery.data( elem, key, data );
+
+		} else {
+			data = undefined;
+		}
+	}
+
+	return data;
+}
+
+// checks a cache object for emptiness
+function isEmptyDataObject( obj ) {
+	var name;
+	for ( name in obj ) {
+
+		// if the public data object is empty, the private is still empty
+		if ( name === "data" && jQuery.isEmptyObject( obj[name] ) ) {
+			continue;
+		}
+		if ( name !== "toJSON" ) {
+			return false;
+		}
+	}
+
+	return true;
+}
+jQuery.extend({
+	queue: function( elem, type, data ) {
+		var queue;
+
+		if ( elem ) {
+			type = ( type || "fx" ) + "queue";
+			queue = jQuery._data( elem, type );
+
+			// Speed up dequeue by getting out quickly if this is just a lookup
+			if ( data ) {
+				if ( !queue || jQuery.isArray(data) ) {
+					queue = jQuery._data( elem, type, jQuery.makeArray(data) );
+				} else {
+					queue.push( data );
+				}
+			}
+			return queue || [];
+		}
+	},
+
+	dequeue: function( elem, type ) {
+		type = type || "fx";
+
+		var queue = jQuery.queue( elem, type ),
+			startLength = queue.length,
+			fn = queue.shift(),
+			hooks = jQuery._queueHooks( elem, type ),
+			next = function() {
+				jQuery.dequeue( elem, type );
+			};
+
+		// If the fx queue is dequeued, always remove the progress sentinel
+		if ( fn === "inprogress" ) {
+			fn = queue.shift();
+			startLength--;
+		}
+
+		if ( fn ) {
+
+			// Add a progress sentinel to prevent the fx queue from being
+			// automatically dequeued
+			if ( type === "fx" ) {
+				queue.unshift( "inprogress" );
+			}
+
+			// clear up the last queue stop function
+			delete hooks.stop;
+			fn.call( elem, next, hooks );
+		}
+
+		if ( !startLength && hooks ) {
+			hooks.empty.fire();
+		}
+	},
+
+	// not intended for public consumption - generates a queueHooks object, or returns the current one
+	_queueHooks: function( elem, type ) {
+		var key = type + "queueHooks";
+		return jQuery._data( elem, key ) || jQuery._data( elem, key, {
+			empty: jQuery.Callbacks("once memory").add(function() {
+				jQuery.removeData( elem, type + "queue", true );
+				jQuery.removeData( elem, key, true );
+			})
+		});
+	}
+});
+
+jQuery.fn.extend({
+	queue: function( type, data ) {
+		var setter = 2;
+
+		if ( typeof type !== "string" ) {
+			data = type;
+			type = "fx";
+			setter--;
+		}
+
+		if ( arguments.length < setter ) {
+			return jQuery.queue( this[0], type );
+		}
+
+		return data === undefined ?
+			this :
+			this.each(function() {
+				var queue = jQuery.queue( this, type, data );
+
+				// ensure a hooks for this queue
+				jQuery._queueHooks( this, type );
+
+				if ( type === "fx" && queue[0] !== "inprogress" ) {
+					jQuery.dequeue( this, type );
+				}
+			});
+	},
+	dequeue: function( type ) {
+		return this.each(function() {
+			jQuery.dequeue( this, type );
+		});
+	},
+	// Based off of the plugin by Clint Helfers, with permission.
+	// http://blindsignals.com/index.php/2009/07/jquery-delay/
+	delay: function( time, type ) {
+		time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
+		type = type || "fx";
+
+		return this.queue( type, function( next, hooks ) {
+			var timeout = setTimeout( next, time );
+			hooks.stop = function() {
+				clearTimeout( timeout );
+			};
+		});
+	},
+	clearQueue: function( type ) {
+		return this.queue( type || "fx", [] );
+	},
+	// Get a promise resolved when queues of a certain type
+	// are emptied (fx is the type by default)
+	promise: function( type, obj ) {
+		var tmp,
+			count = 1,
+			defer = jQuery.Deferred(),
+			elements = this,
+			i = this.length,
+			resolve = function() {
+				if ( !( --count ) ) {
+					defer.resolveWith( elements, [ elements ] );
+				}
+			};
+
+		if ( typeof type !== "string" ) {
+			obj = type;
+			type = undefined;
+		}
+		type = type || "fx";
+
+		while( i-- ) {
+			tmp = jQuery._data( elements[ i ], type + "queueHooks" );
+			if ( tmp && tmp.empty ) {
+				count++;
+				tmp.empty.add( resolve );
+			}
+		}
+		resolve();
+		return defer.promise( obj );
+	}
+});
+var nodeHook, boolHook, fixSpecified,
+	rclass = /[\t\r\n]/g,
+	rreturn = /\r/g,
+	rtype = /^(?:button|input)$/i,
+	rfocusable = /^(?:button|input|object|select|textarea)$/i,
+	rclickable = /^a(?:rea|)$/i,
+	rboolean = /^(?:autofocus|autoplay|async|checked|controls|defer|disabled|hidden|loop|multiple|open|readonly|required|scoped|selected)$/i,
+	getSetAttribute = jQuery.support.getSetAttribute;
+
+jQuery.fn.extend({
+	attr: function( name, value ) {
+		return jQuery.access( this, jQuery.attr, name, value, arguments.length > 1 );
+	},
+
+	removeAttr: function( name ) {
+		return this.each(function() {
+			jQuery.removeAttr( this, name );
+		});
+	},
+
+	prop: function( name, value ) {
+		return jQuery.access( this, jQuery.prop, name, value, arguments.length > 1 );
+	},
+
+	removeProp: function( name ) {
+		name = jQuery.propFix[ name ] || name;
+		return this.each(function() {
+			// try/catch handles cases where IE balks (such as removing a property on window)
+			try {
+				this[ name ] = undefined;
+				delete this[ name ];
+			} catch( e ) {}
+		});
+	},
+
+	addClass: function( value ) {
+		var classNames, i, l, elem,
+			setClass, c, cl;
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each(function( j ) {
+				jQuery( this ).addClass( value.call(this, j, this.className) );
+			});
+		}
+
+		if ( value && typeof value === "string" ) {
+			classNames = value.split( core_rspace );
+
+			for ( i = 0, l = this.length; i < l; i++ ) {
+				elem = this[ i ];
+
+				if ( elem.nodeType === 1 ) {
+					if ( !elem.className && classNames.length === 1 ) {
+						elem.className = value;
+
+					} else {
+						setClass = " " + elem.className + " ";
+
+						for ( c = 0, cl = classNames.length; c < cl; c++ ) {
+							if ( setClass.indexOf( " " + classNames[ c ] + " " ) < 0 ) {
+								setClass += classNames[ c ] + " ";
+							}
+						}
+						elem.className = jQuery.trim( setClass );
+					}
+				}
+			}
+		}
+
+		return this;
+	},
+
+	removeClass: function( value ) {
+		var removes, className, elem, c, cl, i, l;
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each(function( j ) {
+				jQuery( this ).removeClass( value.call(this, j, this.className) );
+			});
+		}
+		if ( (value && typeof value === "string") || value === undefined ) {
+			removes = ( value || "" ).split( core_rspace );
+
+			for ( i = 0, l = this.length; i < l; i++ ) {
+				elem = this[ i ];
+				if ( elem.nodeType === 1 && elem.className ) {
+
+					className = (" " + elem.className + " ").replace( rclass, " " );
+
+					// loop over each item in the removal list
+					for ( c = 0, cl = removes.length; c < cl; c++ ) {
+						// Remove until there is nothing to remove,
+						while ( className.indexOf(" " + removes[ c ] + " ") >= 0 ) {
+							className = className.replace( " " + removes[ c ] + " " , " " );
+						}
+					}
+					elem.className = value ? jQuery.trim( className ) : "";
+				}
+			}
+		}
+
+		return this;
+	},
+
+	toggleClass: function( value, stateVal ) {
+		var type = typeof value,
+			isBool = typeof stateVal === "boolean";
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each(function( i ) {
+				jQuery( this ).toggleClass( value.call(this, i, this.className, stateVal), stateVal );
+			});
+		}
+
+		return this.each(function() {
+			if ( type === "string" ) {
+				// toggle individual class names
+				var className,
+					i = 0,
+					self = jQuery( this ),
+					state = stateVal,
+					classNames = value.split( core_rspace );
+
+				while ( (className = classNames[ i++ ]) ) {
+					// check each className given, space separated list
+					state = isBool ? state : !self.hasClass( className );
+					self[ state ? "addClass" : "removeClass" ]( className );
+				}
+
+			} else if ( type === "undefined" || type === "boolean" ) {
+				if ( this.className ) {
+					// store className if set
+					jQuery._data( this, "__className__", this.className );
+				}
+
+				// toggle whole className
+				this.className = this.className || value === false ? "" : jQuery._data( this, "__className__" ) || "";
+			}
+		});
+	},
+
+	hasClass: function( selector ) {
+		var className = " " + selector + " ",
+			i = 0,
+			l = this.length;
+		for ( ; i < l; i++ ) {
+			if ( this[i].nodeType === 1 && (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) >= 0 ) {
+				return true;
+			}
+		}
+
+		return false;
+	},
+
+	val: function( value ) {
+		var hooks, ret, isFunction,
+			elem = this[0];
+
+		if ( !arguments.length ) {
+			if ( elem ) {
+				hooks = jQuery.valHooks[ elem.type ] || jQuery.valHooks[ elem.nodeName.toLowerCase() ];
+
+				if ( hooks && "get" in hooks && (ret = hooks.get( elem, "value" )) !== undefined ) {
+					return ret;
+				}
+
+				ret = elem.value;
+
+				return typeof ret === "string" ?
+					// handle most common string cases
+					ret.replace(rreturn, "") :
+					// handle cases where value is null/undef or number
+					ret == null ? "" : ret;
+			}
+
+			return;
+		}
+
+		isFunction = jQuery.isFunction( value );
+
+		return this.each(function( i ) {
+			var val,
+				self = jQuery(this);
+
+			if ( this.nodeType !== 1 ) {
+				return;
+			}
+
+			if ( isFunction ) {
+				val = value.call( this, i, self.val() );
+			} else {
+				val = value;
+			}
+
+			// Treat null/undefined as ""; convert numbers to string
+			if ( val == null ) {
+				val = "";
+			} else if ( typeof val === "number" ) {
+				val += "";
+			} else if ( jQuery.isArray( val ) ) {
+				val = jQuery.map(val, function ( value ) {
+					return value == null ? "" : value + "";
+				});
+			}
+
+			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];
+
+			// If set returns undefined, fall back to normal setting
+			if ( !hooks || !("set" in hooks) || hooks.set( this, val, "value" ) === undefined ) {
+				this.value = val;
+			}
+		});
+	}
+});
+
+jQuery.extend({
+	valHooks: {
+		option: {
+			get: function( elem ) {
+				// attributes.value is undefined in Blackberry 4.7 but
+				// uses .value. See #6932
+				var val = elem.attributes.value;
+				return !val || val.specified ? elem.value : elem.text;
+			}
+		},
+		select: {
+			get: function( elem ) {
+				var value, option,
+					options = elem.options,
+					index = elem.selectedIndex,
+					one = elem.type === "select-one" || index < 0,
+					values = one ? null : [],
+					max = one ? index + 1 : options.length,
+					i = index < 0 ?
+						max :
+						one ? index : 0;
+
+				// Loop through all the selected options
+				for ( ; i < max; i++ ) {
+					option = options[ i ];
+
+					// oldIE doesn't update selected after form reset (#2551)
+					if ( ( option.selected || i === index ) &&
+							// Don't return options that are disabled or in a disabled optgroup
+							( jQuery.support.optDisabled ? !option.disabled : option.getAttribute("disabled") === null ) &&
+							( !option.parentNode.disabled || !jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {
+
+						// Get the specific value for the option
+						value = jQuery( option ).val();
+
+						// We don't need an array for one selects
+						if ( one ) {
+							return value;
+						}
+
+						// Multi-Selects return an array
+						values.push( value );
+					}
+				}
+
+				return values;
+			},
+
+			set: function( elem, value ) {
+				var values = jQuery.makeArray( value );
+
+				jQuery(elem).find("option").each(function() {
+					this.selected = jQuery.inArray( jQuery(this).val(), values ) >= 0;
+				});
+
+				if ( !values.length ) {
+					elem.selectedIndex = -1;
+				}
+				return values;
+			}
+		}
+	},
+
+	// Unused in 1.8, left in so attrFn-stabbers won't die; remove in 1.9
+	attrFn: {},
+
+	attr: function( elem, name, value, pass ) {
+		var ret, hooks, notxml,
+			nType = elem.nodeType;
+
+		// don't get/set attributes on text, comment and attribute nodes
+		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
+			return;
+		}
+
+		if ( pass && jQuery.isFunction( jQuery.fn[ name ] ) ) {
+			return jQuery( elem )[ name ]( value );
+		}
+
+		// Fallback to prop when attributes are not supported
+		if ( typeof elem.getAttribute === "undefined" ) {
+			return jQuery.prop( elem, name, value );
+		}
+
+		notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
+
+		// All attributes are lowercase
+		// Grab necessary hook if one is defined
+		if ( notxml ) {
+			name = name.toLowerCase();
+			hooks = jQuery.attrHooks[ name ] || ( rboolean.test( name ) ? boolHook : nodeHook );
+		}
+
+		if ( value !== undefined ) {
+
+			if ( value === null ) {
+				jQuery.removeAttr( elem, name );
+				return;
+
+			} else if ( hooks && "set" in hooks && notxml && (ret = hooks.set( elem, value, name )) !== undefined ) {
+				return ret;
+
+			} else {
+				elem.setAttribute( name, value + "" );
+				return value;
+			}
+
+		} else if ( hooks && "get" in hooks && notxml && (ret = hooks.get( elem, name )) !== null ) {
+			return ret;
+
+		} else {
+
+			ret = elem.getAttribute( name );
+
+			// Non-existent attributes return null, we normalize to undefined
+			return ret === null ?
+				undefined :
+				ret;
+		}
+	},
+
+	removeAttr: function( elem, value ) {
+		var propName, attrNames, name, isBool,
+			i = 0;
+
+		if ( value && elem.nodeType === 1 ) {
+
+			attrNames = value.split( core_rspace );
+
+			for ( ; i < attrNames.length; i++ ) {
+				name = attrNames[ i ];
+
+				if ( name ) {
+					propName = jQuery.propFix[ name ] || name;
+					isBool = rboolean.test( name );
+
+					// See #9699 for explanation of this approach (setting first, then removal)
+					// Do not do this for boolean attributes (see #10870)
+					if ( !isBool ) {
+						jQuery.attr( elem, name, "" );
+					}
+					elem.removeAttribute( getSetAttribute ? name : propName );
+
+					// Set corresponding property to false for boolean attributes
+					if ( isBool && propName in elem ) {
+						elem[ propName ] = false;
+					}
+				}
+			}
+		}
+	},
+
+	attrHooks: {
+		type: {
+			set: function( elem, value ) {
+				// We can't allow the type property to be changed (since it causes problems in IE)
+				if ( rtype.test( elem.nodeName ) && elem.parentNode ) {
+					jQuery.error( "type property can't be changed" );
+				} else if ( !jQuery.support.radioValue && value === "radio" && jQuery.nodeName(elem, "input") ) {
+					// Setting the type on a radio button after the value resets the value in IE6-9
+					// Reset value to it's default in case type is set after value
+					// This is for element creation
+					var val = elem.value;
+					elem.setAttribute( "type", value );
+					if ( val ) {
+						elem.value = val;
+					}
+					return value;
+				}
+			}
+		},
+		// Use the value property for back compat
+		// Use the nodeHook for button elements in IE6/7 (#1954)
+		value: {
+			get: function( elem, name ) {
+				if ( nodeHook && jQuery.nodeName( elem, "button" ) ) {
+					return nodeHook.get( elem, name );
+				}
+				return name in elem ?
+					elem.value :
+					null;
+			},
+			set: function( elem, value, name ) {
+				if ( nodeHook && jQuery.nodeName( elem, "button" ) ) {
+					return nodeHook.set( elem, value, name );
+				}
+				// Does not return so that setAttribute is also used
+				elem.value = value;
+			}
+		}
+	},
+
+	propFix: {
+		tabindex: "tabIndex",
+		readonly: "readOnly",
+		"for": "htmlFor",
+		"class": "className",
+		maxlength: "maxLength",
+		cellspacing: "cellSpacing",
+		cellpadding: "cellPadding",
+		rowspan: "rowSpan",
+		colspan: "colSpan",
+		usemap: "useMap",
+		frameborder: "frameBorder",
+		contenteditable: "contentEditable"
+	},
+
+	prop: function( elem, name, value ) {
+		var ret, hooks, notxml,
+			nType = elem.nodeType;
+
+		// don't get/set properties on text, comment and attribute nodes
+		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
+			return;
+		}
+
+		notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
+
+		if ( notxml ) {
+			// Fix name and attach hooks
+			name = jQuery.propFix[ name ] || name;
+			hooks = jQuery.propHooks[ name ];
+		}
+
+		if ( value !== undefined ) {
+			if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) {
+				return ret;
+
+			} else {
+				return ( elem[ name ] = value );
+			}
+
+		} else {
+			if ( hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ) {
+				return ret;
+
+			} else {
+				return elem[ name ];
+			}
+		}
+	},
+
+	propHooks: {
+		tabIndex: {
+			get: function( elem ) {
+				// elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
+				// http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
+				var attributeNode = elem.getAttributeNode("tabindex");
+
+				return attributeNode && attributeNode.specified ?
+					parseInt( attributeNode.value, 10 ) :
+					rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ?
+						0 :
+						undefined;
+			}
+		}
+	}
+});
+
+// Hook for boolean attributes
+boolHook = {
+	get: function( elem, name ) {
+		// Align boolean attributes with corresponding properties
+		// Fall back to attribute presence where some booleans are not supported
+		var attrNode,
+			property = jQuery.prop( elem, name );
+		return property === true || typeof property !== "boolean" && ( attrNode = elem.getAttributeNode(name) ) && attrNode.nodeValue !== false ?
+			name.toLowerCase() :
+			undefined;
+	},
+	set: function( elem, value, name ) {
+		var propName;
+		if ( value === false ) {
+			// Remove boolean attributes when set to false
+			jQuery.removeAttr( elem, name );
+		} else {
+			// value is true since we know at this point it's type boolean and not false
+			// Set boolean attributes to the same name and set the DOM property
+			propName = jQuery.propFix[ name ] || name;
+			if ( propName in elem ) {
+				// Only set the IDL specifically if it already exists on the element
+				elem[ propName ] = true;
+			}
+
+			elem.setAttribute( name, name.toLowerCase() );
+		}
+		return name;
+	}
+};
+
+// IE6/7 do not support getting/setting some attributes with get/setAttribute
+if ( !getSetAttribute ) {
+
+	fixSpecified = {
+		name: true,
+		id: true,
+		coords: true
+	};
+
+	// Use this for any attribute in IE6/7
+	// This fixes almost every IE6/7 issue
+	nodeHook = jQuery.valHooks.button = {
+		get: function( elem, name ) {
+			var ret;
+			ret = elem.getAttributeNode( name );
+			return ret && ( fixSpecified[ name ] ? ret.value !== "" : ret.specified ) ?
+				ret.value :
+				undefined;
+		},
+		set: function( elem, value, name ) {
+			// Set the existing or create a new attribute node
+			var ret = elem.getAttributeNode( name );
+			if ( !ret ) {
+				ret = document.createAttribute( name );
+				elem.setAttributeNode( ret );
+			}
+			return ( ret.value = value + "" );
+		}
+	};
+
+	// Set width and height to auto instead of 0 on empty string( Bug #8150 )
+	// This is for removals
+	jQuery.each([ "width", "height" ], function( i, name ) {
+		jQuery.attrHooks[ name ] = jQuery.extend( jQuery.attrHooks[ name ], {
+			set: function( elem, value ) {
+				if ( value === "" ) {
+					elem.setAttribute( name, "auto" );
+					return value;
+				}
+			}
+		});
+	});
+
+	// Set contenteditable to false on removals(#10429)
+	// Setting to empty string throws an error as an invalid value
+	jQuery.attrHooks.contenteditable = {
+		get: nodeHook.get,
+		set: function( elem, value, name ) {
+			if ( value === "" ) {
+				value = "false";
+			}
+			nodeHook.set( elem, value, name );
+		}
+	};
+}
+
+
+// Some attributes require a special call on IE
+if ( !jQuery.support.hrefNormalized ) {
+	jQuery.each([ "href", "src", "width", "height" ], function( i, name ) {
+		jQuery.attrHooks[ name ] = jQuery.extend( jQuery.attrHooks[ name ], {
+			get: function( elem ) {
+				var ret = elem.getAttribute( name, 2 );
+				return ret === null ? undefined : ret;
+			}
+		});
+	});
+}
+
+if ( !jQuery.support.style ) {
+	jQuery.attrHooks.style = {
+		get: function( elem ) {
+			// Return undefined in the case of empty string
+			// Normalize to lowercase since IE uppercases css property names
+			return elem.style.cssText.toLowerCase() || undefined;
+		},
+		set: function( elem, value ) {
+			return ( elem.style.cssText = value + "" );
+		}
+	};
+}
+
+// Safari mis-reports the default selected property of an option
+// Accessing the parent's selectedIndex property fixes it
+if ( !jQuery.support.optSelected ) {
+	jQuery.propHooks.selected = jQuery.extend( jQuery.propHooks.selected, {
+		get: function( elem ) {
+			var parent = elem.parentNode;
+
+			if ( parent ) {
+				parent.selectedIndex;
+
+				// Make sure that it also works with optgroups, see #5701
+				if ( parent.parentNode ) {
+					parent.parentNode.selectedIndex;
+				}
+			}
+			return null;
+		}
+	});
+}
+
+// IE6/7 call enctype encoding
+if ( !jQuery.support.enctype ) {
+	jQuery.propFix.enctype = "encoding";
+}
+
+// Radios and checkboxes getter/setter
+if ( !jQuery.support.checkOn ) {
+	jQuery.each([ "radio", "checkbox" ], function() {
+		jQuery.valHooks[ this ] = {
+			get: function( elem ) {
+				// Handle the case where in Webkit "" is returned instead of "on" if a value isn't specified
+				return elem.getAttribute("value") === null ? "on" : elem.value;
+			}
+		};
+	});
+}
+jQuery.each([ "radio", "checkbox" ], function() {
+	jQuery.valHooks[ this ] = jQuery.extend( jQuery.valHooks[ this ], {
+		set: function( elem, value ) {
+			if ( jQuery.isArray( value ) ) {
+				return ( elem.checked = jQuery.inArray( jQuery(elem).val(), value ) >= 0 );
+			}
+		}
+	});
+});
+var rformElems = /^(?:textarea|input|select)$/i,
+	rtypenamespace = /^([^\.]*|)(?:\.(.+)|)$/,
+	rhoverHack = /(?:^|\s)hover(\.\S+|)\b/,
+	rkeyEvent = /^key/,
+	rmouseEvent = /^(?:mouse|contextmenu)|click/,
+	rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
+	hoverHack = function( events ) {
+		return jQuery.event.special.hover ? events : events.replace( rhoverHack, "mouseenter$1 mouseleave$1" );
+	};
+
+/*
+ * Helper functions for managing events -- not part of the public interface.
+ * Props to Dean Edwards' addEvent library for many of the ideas.
+ */
+jQuery.event = {
+
+	add: function( elem, types, handler, data, selector ) {
+
+		var elemData, eventHandle, events,
+			t, tns, type, namespaces, handleObj,
+			handleObjIn, handlers, special;
+
+		// Don't attach events to noData or text/comment nodes (allow plain objects tho)
+		if ( elem.nodeType === 3 || elem.nodeType === 8 || !types || !handler || !(elemData = jQuery._data( elem )) ) {
+			return;
+		}
+
+		// Caller can pass in an object of custom data in lieu of the handler
+		if ( handler.handler ) {
+			handleObjIn = handler;
+			handler = handleObjIn.handler;
+			selector = handleObjIn.selector;
+		}
+
+		// Make sure that the handler has a unique ID, used to find/remove it later
+		if ( !handler.guid ) {
+			handler.guid = jQuery.guid++;
+		}
+
+		// Init the element's event structure and main handler, if this is the first
+		events = elemData.events;
+		if ( !events ) {
+			elemData.events = events = {};
+		}
+		eventHandle = elemData.handle;
+		if ( !eventHandle ) {
+			elemData.handle = eventHandle = function( e ) {
+				// Discard the second event of a jQuery.event.trigger() and
+				// when an event is called after a page has unloaded
+				return typeof jQuery !== "undefined" && (!e || jQuery.event.triggered !== e.type) ?
+					jQuery.event.dispatch.apply( eventHandle.elem, arguments ) :
+					undefined;
+			};
+			// Add elem as a property of the handle fn to prevent a memory leak with IE non-native events
+			eventHandle.elem = elem;
+		}
+
+		// Handle multiple events separated by a space
+		// jQuery(...).bind("mouseover mouseout", fn);
+		types = jQuery.trim( hoverHack(types) ).split( " " );
+		for ( t = 0; t < types.length; t++ ) {
+
+			tns = rtypenamespace.exec( types[t] ) || [];
+			type = tns[1];
+			namespaces = ( tns[2] || "" ).split( "." ).sort();
+
+			// If event changes its type, use the special event handlers for the changed type
+			special = jQuery.event.special[ type ] || {};
+
+			// If selector defined, determine special event api type, otherwise given type
+			type = ( selector ? special.delegateType : special.bindType ) || type;
+
+			// Update special based on newly reset type
+			special = jQuery.event.special[ type ] || {};
+
+			// handleObj is passed to all event handlers
+			handleObj = jQuery.extend({
+				type: type,
+				origType: tns[1],
+				data: data,
+				handler: handler,
+				guid: handler.guid,
+				selector: selector,
+				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
+				namespace: namespaces.join(".")
+			}, handleObjIn );
+
+			// Init the event handler queue if we're the first
+			handlers = events[ type ];
+			if ( !handlers ) {
+				handlers = events[ type ] = [];
+				handlers.delegateCount = 0;
+
+				// Only use addEventListener/attachEvent if the special events handler returns false
+				if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
+					// Bind the global event handler to the element
+					if ( elem.addEventListener ) {
+						elem.addEventListener( type, eventHandle, false );
+
+					} else if ( elem.attachEvent ) {
+						elem.attachEvent( "on" + type, eventHandle );
+					}
+				}
+			}
+
+			if ( special.add ) {
+				special.add.call( elem, handleObj );
+
+				if ( !handleObj.handler.guid ) {
+					handleObj.handler.guid = handler.guid;
+				}
+			}
+
+			// Add to the element's handler list, delegates in front
+			if ( selector ) {
+				handlers.splice( handlers.delegateCount++, 0, handleObj );
+			} else {
+				handlers.push( handleObj );
+			}
+
+			// Keep track of which events have ever been used, for event optimization
+			jQuery.event.global[ type ] = true;
+		}
+
+		// Nullify elem to prevent memory leaks in IE
+		elem = null;
+	},
+
+	global: {},
+
+	// Detach an event or set of events from an element
+	remove: function( elem, types, handler, selector, mappedTypes ) {
+
+		var t, tns, type, origType, namespaces, origCount,
+			j, events, special, eventType, handleObj,
+			elemData = jQuery.hasData( elem ) && jQuery._data( elem );
+
+		if ( !elemData || !(events = elemData.events) ) {
+			return;
+		}
+
+		// Once for each type.namespace in types; type may be omitted
+		types = jQuery.trim( hoverHack( types || "" ) ).split(" ");
+		for ( t = 0; t < types.length; t++ ) {
+			tns = rtypenamespace.exec( types[t] ) || [];
+			type = origType = tns[1];
+			namespaces = tns[2];
+
+			// Unbind all events (on this namespace, if provided) for the element
+			if ( !type ) {
+				for ( type in events ) {
+					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
+				}
+				continue;
+			}
+
+			special = jQuery.event.special[ type ] || {};
+			type = ( selector? special.delegateType : special.bindType ) || type;
+			eventType = events[ type ] || [];
+			origCount = eventType.length;
+			namespaces = namespaces ? new RegExp("(^|\\.)" + namespaces.split(".").sort().join("\\.(?:.*\\.|)") + "(\\.|$)") : null;
+
+			// Remove matching events
+			for ( j = 0; j < eventType.length; j++ ) {
+				handleObj = eventType[ j ];
+
+				if ( ( mappedTypes || origType === handleObj.origType ) &&
+					 ( !handler || handler.guid === handleObj.guid ) &&
+					 ( !namespaces || namespaces.test( handleObj.namespace ) ) &&
+					 ( !selector || selector === handleObj.selector || selector === "**" && handleObj.selector ) ) {
+					eventType.splice( j--, 1 );
+
+					if ( handleObj.selector ) {
+						eventType.delegateCount--;
+					}
+					if ( special.remove ) {
+						special.remove.call( elem, handleObj );
+					}
+				}
+			}
+
+			// Remove generic event handler if we removed something and no more handlers exist
+			// (avoids potential for endless recursion during removal of special event handlers)
+			if ( eventType.length === 0 && origCount !== eventType.length ) {
+				if ( !special.teardown || special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
+					jQuery.removeEvent( elem, type, elemData.handle );
+				}
+
+				delete events[ type ];
+			}
+		}
+
+		// Remove the expando if it's no longer used
+		if ( jQuery.isEmptyObject( events ) ) {
+			delete elemData.handle;
+
+			// removeData also checks for emptiness and clears the expando if empty
+			// so use it instead of delete
+			jQuery.removeData( elem, "events", true );
+		}
+	},
+
+	// Events that are safe to short-circuit if no handlers are attached.
+	// Native DOM events should not be added, they may have inline handlers.
+	customEvent: {
+		"getData": true,
+		"setData": true,
+		"changeData": true
+	},
+
+	trigger: function( event, data, elem, onlyHandlers ) {
+		// Don't do events on text and comment nodes
+		if ( elem && (elem.nodeType === 3 || elem.nodeType === 8) ) {
+			return;
+		}
+
+		// Event object or event type
+		var cache, exclusive, i, cur, old, ontype, special, handle, eventPath, bubbleType,
+			type = event.type || event,
+			namespaces = [];
+
+		// focus/blur morphs to focusin/out; ensure we're not firing them right now
+		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
+			return;
+		}
+
+		if ( type.indexOf( "!" ) >= 0 ) {
+			// Exclusive events trigger only for the exact event (no namespaces)
+			type = type.slice(0, -1);
+			exclusive = true;
+		}
+
+		if ( type.indexOf( "." ) >= 0 ) {
+			// Namespaced trigger; create a regexp to match event type in handle()
+			namespaces = type.split(".");
+			type = namespaces.shift();
+			namespaces.sort();
+		}
+
+		if ( (!elem || jQuery.event.customEvent[ type ]) && !jQuery.event.global[ type ] ) {
+			// No jQuery handlers for this event type, and it can't have inline handlers
+			return;
+		}
+
+		// Caller can pass in an Event, Object, or just an event type string
+		event = typeof event === "object" ?
+			// jQuery.Event object
+			event[ jQuery.expando ] ? event :
+			// Object literal
+			new jQuery.Event( type, event ) :
+			// Just the event type (string)
+			new jQuery.Event( type );
+
+		event.type = type;
+		event.isTrigger = true;
+		event.exclusive = exclusive;
+		event.namespace = namespaces.join( "." );
+		event.namespace_re = event.namespace? new RegExp("(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)") : null;
+		ontype = type.indexOf( ":" ) < 0 ? "on" + type : "";
+
+		// Handle a global trigger
+		if ( !elem ) {
+
+			// TODO: Stop taunting the data cache; remove global events and always attach to document
+			cache = jQuery.cache;
+			for ( i in cache ) {
+				if ( cache[ i ].events && cache[ i ].events[ type ] ) {
+					jQuery.event.trigger( event, data, cache[ i ].handle.elem, true );
+				}
+			}
+			return;
+		}
+
+		// Clean up the event in case it is being reused
+		event.result = undefined;
+		if ( !event.target ) {
+			event.target = elem;
+		}
+
+		// Clone any incoming data and prepend the event, creating the handler arg list
+		data = data != null ? jQuery.makeArray( data ) : [];
+		data.unshift( event );
+
+		// Allow special events to draw outside the lines
+		special = jQuery.event.special[ type ] || {};
+		if ( special.trigger && special.trigger.apply( elem, data ) === false ) {
+			return;
+		}
+
+		// Determine event propagation path in advance, per W3C events spec (#9951)
+		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
+		eventPath = [[ elem, special.bindType || type ]];
+		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {
+
+			bubbleType = special.delegateType || type;
+			cur = rfocusMorph.test( bubbleType + type ) ? elem : elem.parentNode;
+			for ( old = elem; cur; cur = cur.parentNode ) {
+				eventPath.push([ cur, bubbleType ]);
+				old = cur;
+			}
+
+			// Only add window if we got to document (e.g., not plain obj or detached DOM)
+			if ( old === (elem.ownerDocument || document) ) {
+				eventPath.push([ old.defaultView || old.parentWindow || window, bubbleType ]);
+			}
+		}
+
+		// Fire handlers on the event path
+		for ( i = 0; i < eventPath.length && !event.isPropagationStopped(); i++ ) {
+
+			cur = eventPath[i][0];
+			event.type = eventPath[i][1];
+
+			handle = ( jQuery._data( cur, "events" ) || {} )[ event.type ] && jQuery._data( cur, "handle" );
+			if ( handle ) {
+				handle.apply( cur, data );
+			}
+			// Note that this is a bare JS function and not a jQuery handler
+			handle = ontype && cur[ ontype ];
+			if ( handle && jQuery.acceptData( cur ) && handle.apply && handle.apply( cur, data ) === false ) {
+				event.preventDefault();
+			}
+		}
+		event.type = type;
+
+		// If nobody prevented the default action, do it now
+		if ( !onlyHandlers && !event.isDefaultPrevented() ) {
+
+			if ( (!special._default || special._default.apply( elem.ownerDocument, data ) === false) &&
+				!(type === "click" && jQuery.nodeName( elem, "a" )) && jQuery.acceptData( elem ) ) {
+
+				// Call a native DOM method on the target with the same name name as the event.
+				// Can't use an .isFunction() check here because IE6/7 fails that test.
+				// Don't do default actions on window, that's where global variables be (#6170)
+				// IE<9 dies on focus/blur to hidden element (#1486)
+				if ( ontype && elem[ type ] && ((type !== "focus" && type !== "blur") || event.target.offsetWidth !== 0) && !jQuery.isWindow( elem ) ) {
+
+					// Don't re-trigger an onFOO event when we call its FOO() method
+					old = elem[ ontype ];
+
+					if ( old ) {
+						elem[ ontype ] = null;
+					}
+
+					// Prevent re-triggering of the same event, since we already bubbled it above
+					jQuery.event.triggered = type;
+					elem[ type ]();
+					jQuery.event.triggered = undefined;
+
+					if ( old ) {
+						elem[ ontype ] = old;
+					}
+				}
+			}
+		}
+
+		return event.result;
+	},
+
+	dispatch: function( event ) {
+
+		// Make a writable jQuery.Event from the native event object
+		event = jQuery.event.fix( event || window.event );
+
+		var i, j, cur, ret, selMatch, matched, matches, handleObj, sel, related,
+			handlers = ( (jQuery._data( this, "events" ) || {} )[ event.type ] || []),
+			delegateCount = handlers.delegateCount,
+			args = core_slice.call( arguments ),
+			run_all = !event.exclusive && !event.namespace,
+			special = jQuery.event.special[ event.type ] || {},
+			handlerQueue = [];
+
+		// Use the fix-ed jQuery.Event rather than the (read-only) native event
+		args[0] = event;
+		event.delegateTarget = this;
+
+		// Call the preDispatch hook for the mapped type, and let it bail if desired
+		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
+			return;
+		}
+
+		// Determine handlers that should run if there are delegated events
+		// Avoid non-left-click bubbling in Firefox (#3861)
+		if ( delegateCount && !(event.button && event.type === "click") ) {
+
+			for ( cur = event.target; cur != this; cur = cur.parentNode || this ) {
+
+				// Don't process clicks (ONLY) on disabled elements (#6911, #8165, #11382, #11764)
+				if ( cur.disabled !== true || event.type !== "click" ) {
+					selMatch = {};
+					matches = [];
+					for ( i = 0; i < delegateCount; i++ ) {
+						handleObj = handlers[ i ];
+						sel = handleObj.selector;
+
+						if ( selMatch[ sel ] === undefined ) {
+							selMatch[ sel ] = handleObj.needsContext ?
+								jQuery( sel, this ).index( cur ) >= 0 :
+								jQuery.find( sel, this, null, [ cur ] ).length;
+						}
+						if ( selMatch[ sel ] ) {
+							matches.push( handleObj );
+						}
+					}
+					if ( matches.length ) {
+						handlerQueue.push({ elem: cur, matches: matches });
+					}
+				}
+			}
+		}
+
+		// Add the remaining (directly-bound) handlers
+		if ( handlers.length > delegateCount ) {
+			handlerQueue.push({ elem: this, matches: handlers.slice( delegateCount ) });
+		}
+
+		// Run delegates first; they may want to stop propagation beneath us
+		for ( i = 0; i < handlerQueue.length && !event.isPropagationStopped(); i++ ) {
+			matched = handlerQueue[ i ];
+			event.currentTarget = matched.elem;
+
+			for ( j = 0; j < matched.matches.length && !event.isImmediatePropagationStopped(); j++ ) {
+				handleObj = matched.matches[ j ];
+
+				// Triggered event must either 1) be non-exclusive and have no namespace, or
+				// 2) have namespace(s) a subset or equal to those in the bound event (both can have no namespace).
+				if ( run_all || (!event.namespace && !handleObj.namespace) || event.namespace_re && event.namespace_re.test( handleObj.namespace ) ) {
+
+					event.data = handleObj.data;
+					event.handleObj = handleObj;
+
+					ret = ( (jQuery.event.special[ handleObj.origType ] || {}).handle || handleObj.handler )
+							.apply( matched.elem, args );
+
+					if ( ret !== undefined ) {
+						event.result = ret;
+						if ( ret === false ) {
+							event.preventDefault();
+							event.stopPropagation();
+						}
+					}
+				}
+			}
+		}
+
+		// Call the postDispatch hook for the mapped type
+		if ( special.postDispatch ) {
+			special.postDispatch.call( this, event );
+		}
+
+		return event.result;
+	},
+
+	// Includes some event props shared by KeyEvent and MouseEvent
+	// *** attrChange attrName relatedNode srcElement  are not normalized, non-W3C, deprecated, will be removed in 1.8 ***
+	props: "attrChange attrName relatedNode srcElement altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),
+
+	fixHooks: {},
+
+	keyHooks: {
+		props: "char charCode key keyCode".split(" "),
+		filter: function( event, original ) {
+
+			// Add which for key events
+			if ( event.which == null ) {
+				event.which = original.charCode != null ? original.charCode : original.keyCode;
+			}
+
+			return event;
+		}
+	},
+
+	mouseHooks: {
+		props: "button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "),
+		filter: function( event, original ) {
+			var eventDoc, doc, body,
+				button = original.button,
+				fromElement = original.fromElement;
+
+			// Calculate pageX/Y if missing and clientX/Y available
+			if ( event.pageX == null && original.clientX != null ) {
+				eventDoc = event.target.ownerDocument || document;
+				doc = eventDoc.documentElement;
+				body = eventDoc.body;
+
+				event.pageX = original.clientX + ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - ( doc && doc.clientLeft || body && body.clientLeft || 0 );
+				event.pageY = original.clientY + ( doc && doc.scrollTop  || body && body.scrollTop  || 0 ) - ( doc && doc.clientTop  || body && body.clientTop  || 0 );
+			}
+
+			// Add relatedTarget, if necessary
+			if ( !event.relatedTarget && fromElement ) {
+				event.relatedTarget = fromElement === event.target ? original.toElement : fromElement;
+			}
+
+			// Add which for click: 1 === left; 2 === middle; 3 === right
+			// Note: button is not normalized, so don't use it
+			if ( !event.which && button !== undefined ) {
+				event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
+			}
+
+			return event;
+		}
+	},
+
+	fix: function( event ) {
+		if ( event[ jQuery.expando ] ) {
+			return event;
+		}
+
+		// Create a writable copy of the event object and normalize some properties
+		var i, prop,
+			originalEvent = event,
+			fixHook = jQuery.event.fixHooks[ event.type ] || {},
+			copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props;
+
+		event = jQuery.Event( originalEvent );
+
+		for ( i = copy.length; i; ) {
+			prop = copy[ --i ];
+			event[ prop ] = originalEvent[ prop ];
+		}
+
+		// Fix target property, if necessary (#1925, IE 6/7/8 & Safari2)
+		if ( !event.target ) {
+			event.target = originalEvent.srcElement || document;
+		}
+
+		// Target should not be a text node (#504, Safari)
+		if ( event.target.nodeType === 3 ) {
+			event.target = event.target.parentNode;
+		}
+
+		// For mouse/key events, metaKey==false if it's undefined (#3368, #11328; IE6/7/8)
+		event.metaKey = !!event.metaKey;
+
+		return fixHook.filter? fixHook.filter( event, originalEvent ) : event;
+	},
+
+	special: {
+		load: {
+			// Prevent triggered image.load events from bubbling to window.load
+			noBubble: true
+		},
+
+		focus: {
+			delegateType: "focusin"
+		},
+		blur: {
+			delegateType: "focusout"
+		},
+
+		beforeunload: {
+			setup: function( data, namespaces, eventHandle ) {
+				// We only want to do this special case on windows
+				if ( jQuery.isWindow( this ) ) {
+					this.onbeforeunload = eventHandle;
+				}
+			},
+
+			teardown: function( namespaces, eventHandle ) {
+				if ( this.onbeforeunload === eventHandle ) {
+					this.onbeforeunload = null;
+				}
+			}
+		}
+	},
+
+	simulate: function( type, elem, event, bubble ) {
+		// Piggyback on a donor event to simulate a different one.
+		// Fake originalEvent to avoid donor's stopPropagation, but if the
+		// simulated event prevents default then we do the same on the donor.
+		var e = jQuery.extend(
+			new jQuery.Event(),
+			event,
+			{ type: type,
+				isSimulated: true,
+				originalEvent: {}
+			}
+		);
+		if ( bubble ) {
+			jQuery.event.trigger( e, null, elem );
+		} else {
+			jQuery.event.dispatch.call( elem, e );
+		}
+		if ( e.isDefaultPrevented() ) {
+			event.preventDefault();
+		}
+	}
+};
+
+// Some plugins are using, but it's undocumented/deprecated and will be removed.
+// The 1.7 special event interface should provide all the hooks needed now.
+jQuery.event.handle = jQuery.event.dispatch;
+
+jQuery.removeEvent = document.removeEventListener ?
+	function( elem, type, handle ) {
+		if ( elem.removeEventListener ) {
+			elem.removeEventListener( type, handle, false );
+		}
+	} :
+	function( elem, type, handle ) {
+		var name = "on" + type;
+
+		if ( elem.detachEvent ) {
+
+			// #8545, #7054, preventing memory leaks for custom events in IE6-8
+			// detachEvent needed property on element, by name of that event, to properly expose it to GC
+			if ( typeof elem[ name ] === "undefined" ) {
+				elem[ name ] = null;
+			}
+
+			elem.detachEvent( name, handle );
+		}
+	};
+
+jQuery.Event = function( src, props ) {
+	// Allow instantiation without the 'new' keyword
+	if ( !(this instanceof jQuery.Event) ) {
+		return new jQuery.Event( src, props );
+	}
+
+	// Event object
+	if ( src && src.type ) {
+		this.originalEvent = src;
+		this.type = src.type;
+
+		// Events bubbling up the document may have been marked as prevented
+		// by a handler lower down the tree; reflect the correct value.
+		this.isDefaultPrevented = ( src.defaultPrevented || src.returnValue === false ||
+			src.getPreventDefault && src.getPreventDefault() ) ? returnTrue : returnFalse;
+
+	// Event type
+	} else {
+		this.type = src;
+	}
+
+	// Put explicitly provided properties onto the event object
+	if ( props ) {
+		jQuery.extend( this, props );
+	}
+
+	// Create a timestamp if incoming event doesn't have one
+	this.timeStamp = src && src.timeStamp || jQuery.now();
+
+	// Mark it as fixed
+	this[ jQuery.expando ] = true;
+};
+
+function returnFalse() {
+	return false;
+}
+function returnTrue() {
+	return true;
+}
+
+// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
+// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
+jQuery.Event.prototype = {
+	preventDefault: function() {
+		this.isDefaultPrevented = returnTrue;
+
+		var e = this.originalEvent;
+		if ( !e ) {
+			return;
+		}
+
+		// if preventDefault exists run it on the original event
+		if ( e.preventDefault ) {
+			e.preventDefault();
+
+		// otherwise set the returnValue property of the original event to false (IE)
+		} else {
+			e.returnValue = false;
+		}
+	},
+	stopPropagation: function() {
+		this.isPropagationStopped = returnTrue;
+
+		var e = this.originalEvent;
+		if ( !e ) {
+			return;
+		}
+		// if stopPropagation exists run it on the original event
+		if ( e.stopPropagation ) {
+			e.stopPropagation();
+		}
+		// otherwise set the cancelBubble property of the original event to true (IE)
+		e.cancelBubble = true;
+	},
+	stopImmediatePropagation: function() {
+		this.isImmediatePropagationStopped = returnTrue;
+		this.stopPropagation();
+	},
+	isDefaultPrevented: returnFalse,
+	isPropagationStopped: returnFalse,
+	isImmediatePropagationStopped: returnFalse
+};
+
+// Create mouseenter/leave events using mouseover/out and event-time checks
+jQuery.each({
+	mouseenter: "mouseover",
+	mouseleave: "mouseout"
+}, function( orig, fix ) {
+	jQuery.event.special[ orig ] = {
+		delegateType: fix,
+		bindType: fix,
+
+		handle: function( event ) {
+			var ret,
+				target = this,
+				related = event.relatedTarget,
+				handleObj = event.handleObj,
+				selector = handleObj.selector;
+
+			// For mousenter/leave call the handler if related is outside the target.
+			// NB: No relatedTarget if the mouse left/entered the browser window
+			if ( !related || (related !== target && !jQuery.contains( target, related )) ) {
+				event.type = handleObj.origType;
+				ret = handleObj.handler.apply( this, arguments );
+				event.type = fix;
+			}
+			return ret;
+		}
+	};
+});
+
+// IE submit delegation
+if ( !jQuery.support.submitBubbles ) {
+
+	jQuery.event.special.submit = {
+		setup: function() {
+			// Only need this for delegated form submit events
+			if ( jQuery.nodeName( this, "form" ) ) {
+				return false;
+			}
+
+			// Lazy-add a submit handler when a descendant form may potentially be submitted
+			jQuery.event.add( this, "click._submit keypress._submit", function( e ) {
+				// Node name check avoids a VML-related crash in IE (#9807)
+				var elem = e.target,
+					form = jQuery.nodeName( elem, "input" ) || jQuery.nodeName( elem, "button" ) ? elem.form : undefined;
+				if ( form && !jQuery._data( form, "_submit_attached" ) ) {
+					jQuery.event.add( form, "submit._submit", function( event ) {
+						event._submit_bubble = true;
+					});
+					jQuery._data( form, "_submit_attached", true );
+				}
+			});
+			// return undefined since we don't need an event listener
+		},
+
+		postDispatch: function( event ) {
+			// If form was submitted by the user, bubble the event up the tree
+			if ( event._submit_bubble ) {
+				delete event._submit_bubble;
+				if ( this.parentNode && !event.isTrigger ) {
+					jQuery.event.simulate( "submit", this.parentNode, event, true );
+				}
+			}
+		},
+
+		teardown: function() {
+			// Only need this for delegated form submit events
+			if ( jQuery.nodeName( this, "form" ) ) {
+				return false;
+			}
+
+			// Remove delegated handlers; cleanData eventually reaps submit handlers attached above
+			jQuery.event.remove( this, "._submit" );
+		}
+	};
+}
+
+// IE change delegation and checkbox/radio fix
+if ( !jQuery.support.changeBubbles ) {
+
+	jQuery.event.special.change = {
+
+		setup: function() {
+
+			if ( rformElems.test( this.nodeName ) ) {
+				// IE doesn't fire change on a check/radio until blur; trigger it on click
+				// after a propertychange. Eat the blur-change in special.change.handle.
+				// This still fires onchange a second time for check/radio after blur.
+				if ( this.type === "checkbox" || this.type === "radio" ) {
+					jQuery.event.add( this, "propertychange._change", function( event ) {
+						if ( event.originalEvent.propertyName === "checked" ) {
+							this._just_changed = true;
+						}
+					});
+					jQuery.event.add( this, "click._change", function( event ) {
+						if ( this._just_changed && !event.isTrigger ) {
+							this._just_changed = false;
+						}
+						// Allow triggered, simulated change events (#11500)
+						jQuery.event.simulate( "change", this, event, true );
+					});
+				}
+				return false;
+			}
+			// Delegated event; lazy-add a change handler on descendant inputs
+			jQuery.event.add( this, "beforeactivate._change", function( e ) {
+				var elem = e.target;
+
+				if ( rformElems.test( elem.nodeName ) && !jQuery._data( elem, "_change_attached" ) ) {
+					jQuery.event.add( elem, "change._change", function( event ) {
+						if ( this.parentNode && !event.isSimulated && !event.isTrigger ) {
+							jQuery.event.simulate( "change", this.parentNode, event, true );
+						}
+					});
+					jQuery._data( elem, "_change_attached", true );
+				}
+			});
+		},
+
+		handle: function( event ) {
+			var elem = event.target;
+
+			// Swallow native change events from checkbox/radio, we already triggered them above
+			if ( this !== elem || event.isSimulated || event.isTrigger || (elem.type !== "radio" && elem.type !== "checkbox") ) {
+				return event.handleObj.handler.apply( this, arguments );
+			}
+		},
+
+		teardown: function() {
+			jQuery.event.remove( this, "._change" );
+
+			return !rformElems.test( this.nodeName );
+		}
+	};
+}
+
+// Create "bubbling" focus and blur events
+if ( !jQuery.support.focusinBubbles ) {
+	jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {
+
+		// Attach a single capturing handler while someone wants focusin/focusout
+		var attaches = 0,
+			handler = function( event ) {
+				jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ), true );
+			};
+
+		jQuery.event.special[ fix ] = {
+			setup: function() {
+				if ( attaches++ === 0 ) {
+					document.addEventListener( orig, handler, true );
+				}
+			},
+			teardown: function() {
+				if ( --attaches === 0 ) {
+					document.removeEventListener( orig, handler, true );
+				}
+			}
+		};
+	});
+}
+
+jQuery.fn.extend({
+
+	on: function( types, selector, data, fn, /*INTERNAL*/ one ) {
+		var origFn, type;
+
+		// Types can be a map of types/handlers
+		if ( typeof types === "object" ) {
+			// ( types-Object, selector, data )
+			if ( typeof selector !== "string" ) { // && selector != null
+				// ( types-Object, data )
+				data = data || selector;
+				selector = undefined;
+			}
+			for ( type in types ) {
+				this.on( type, selector, data, types[ type ], one );
+			}
+			return this;
+		}
+
+		if ( data == null && fn == null ) {
+			// ( types, fn )
+			fn = selector;
+			data = selector = undefined;
+		} else if ( fn == null ) {
+			if ( typeof selector === "string" ) {
+				// ( types, selector, fn )
+				fn = data;
+				data = undefined;
+			} else {
+				// ( types, data, fn )
+				fn = data;
+				data = selector;
+				selector = undefined;
+			}
+		}
+		if ( fn === false ) {
+			fn = returnFalse;
+		} else if ( !fn ) {
+			return this;
+		}
+
+		if ( one === 1 ) {
+			origFn = fn;
+			fn = function( event ) {
+				// Can use an empty set, since event contains the info
+				jQuery().off( event );
+				return origFn.apply( this, arguments );
+			};
+			// Use same guid so caller can remove using origFn
+			fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
+		}
+		return this.each( function() {
+			jQuery.event.add( this, types, fn, data, selector );
+		});
+	},
+	one: function( types, selector, data, fn ) {
+		return this.on( types, selector, data, fn, 1 );
+	},
+	off: function( types, selector, fn ) {
+		var handleObj, type;
+		if ( types && types.preventDefault && types.handleObj ) {
+			// ( event )  dispatched jQuery.Event
+			handleObj = types.handleObj;
+			jQuery( types.delegateTarget ).off(
+				handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType,
+				handleObj.selector,
+				handleObj.handler
+			);
+			return this;
+		}
+		if ( typeof types === "object" ) {
+			// ( types-object [, selector] )
+			for ( type in types ) {
+				this.off( type, selector, types[ type ] );
+			}
+			return this;
+		}
+		if ( selector === false || typeof selector === "function" ) {
+			// ( types [, fn] )
+			fn = selector;
+			selector = undefined;
+		}
+		if ( fn === false ) {
+			fn = returnFalse;
+		}
+		return this.each(function() {
+			jQuery.event.remove( this, types, fn, selector );
+		});
+	},
+
+	bind: function( types, data, fn ) {
+		return this.on( types, null, data, fn );
+	},
+	unbind: function( types, fn ) {
+		return this.off( types, null, fn );
+	},
+
+	live: function( types, data, fn ) {
+		jQuery( this.context ).on( types, this.selector, data, fn );
+		return this;
+	},
+	die: function( types, fn ) {
+		jQuery( this.context ).off( types, this.selector || "**", fn );
+		return this;
+	},
+
+	delegate: function( selector, types, data, fn ) {
+		return this.on( types, selector, data, fn );
+	},
+	undelegate: function( selector, types, fn ) {
+		// ( namespace ) or ( selector, types [, fn] )
+		return arguments.length === 1 ? this.off( selector, "**" ) : this.off( types, selector || "**", fn );
+	},
+
+	trigger: function( type, data ) {
+		return this.each(function() {
+			jQuery.event.trigger( type, data, this );
+		});
+	},
+	triggerHandler: function( type, data ) {
+		if ( this[0] ) {
+			return jQuery.event.trigger( type, data, this[0], true );
+		}
+	},
+
+	toggle: function( fn ) {
+		// Save reference to arguments for access in closure
+		var args = arguments,
+			guid = fn.guid || jQuery.guid++,
+			i = 0,
+			toggler = function( event ) {
+				// Figure out which function to execute
+				var lastToggle = ( jQuery._data( this, "lastToggle" + fn.guid ) || 0 ) % i;
+				jQuery._data( this, "lastToggle" + fn.guid, lastToggle + 1 );
+
+				// Make sure that clicks stop
+				event.preventDefault();
+
+				// and execute the function
+				return args[ lastToggle ].apply( this, arguments ) || false;
+			};
+
+		// link all the functions, so any of them can unbind this click handler
+		toggler.guid = guid;
+		while ( i < args.length ) {
+			args[ i++ ].guid = guid;
+		}
+
+		return this.click( toggler );
+	},
+
+	hover: function( fnOver, fnOut ) {
+		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
+	}
+});
+
+jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " +
+	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
+	"change select submit keydown keypress keyup error contextmenu").split(" "), function( i, name ) {
+
+	// Handle event binding
+	jQuery.fn[ name ] = function( data, fn ) {
+		if ( fn == null ) {
+			fn = data;
+			data = null;
+		}
+
+		return arguments.length > 0 ?
+			this.on( name, null, data, fn ) :
+			this.trigger( name );
+	};
+
+	if ( rkeyEvent.test( name ) ) {
+		jQuery.event.fixHooks[ name ] = jQuery.event.keyHooks;
+	}
+
+	if ( rmouseEvent.test( name ) ) {
+		jQuery.event.fixHooks[ name ] = jQuery.event.mouseHooks;
+	}
+});
+/*!
+ * Sizzle CSS Selector Engine
+ * Copyright 2012 jQuery Foundation and other contributors
+ * Released under the MIT license
+ * http://sizzlejs.com/
+ */
+(function( window, undefined ) {
+
+var cachedruns,
+	assertGetIdNotName,
+	Expr,
+	getText,
+	isXML,
+	contains,
+	compile,
+	sortOrder,
+	hasDuplicate,
+	outermostContext,
+
+	baseHasDuplicate = true,
+	strundefined = "undefined",
+
+	expando = ( "sizcache" + Math.random() ).replace( ".", "" ),
+
+	Token = String,
+	document = window.document,
+	docElem = document.documentElement,
+	dirruns = 0,
+	done = 0,
+	pop = [].pop,
+	push = [].push,
+	slice = [].slice,
+	// Use a stripped-down indexOf if a native one is unavailable
+	indexOf = [].indexOf || function( elem ) {
+		var i = 0,
+			len = this.length;
+		for ( ; i < len; i++ ) {
+			if ( this[i] === elem ) {
+				return i;
+			}
+		}
+		return -1;
+	},
+
+	// Augment a function for special use by Sizzle
+	markFunction = function( fn, value ) {
+		fn[ expando ] = value == null || value;
+		return fn;
+	},
+
+	createCache = function() {
+		var cache = {},
+			keys = [];
+
+		return markFunction(function( key, value ) {
+			// Only keep the most recent entries
+			if ( keys.push( key ) > Expr.cacheLength ) {
+				delete cache[ keys.shift() ];
+			}
+
+			// Retrieve with (key + " ") to avoid collision with native Object.prototype properties (see Issue #157)
+			return (cache[ key + " " ] = value);
+		}, cache );
+	},
+
+	classCache = createCache(),
+	tokenCache = createCache(),
+	compilerCache = createCache(),
+
+	// Regex
+
+	// Whitespace characters http://www.w3.org/TR/css3-selectors/#whitespace
+	whitespace = "[\\x20\\t\\r\\n\\f]",
+	// http://www.w3.org/TR/css3-syntax/#characters
+	characterEncoding = "(?:\\\\.|[-\\w]|[^\\x00-\\xa0])+",
+
+	// Loosely modeled on CSS identifier characters
+	// An unquoted value should be a CSS identifier (http://www.w3.org/TR/css3-selectors/#attribute-selectors)
+	// Proper syntax: http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
+	identifier = characterEncoding.replace( "w", "w#" ),
+
+	// Acceptable operators http://www.w3.org/TR/selectors/#attribute-selectors
+	operators = "([*^$|!~]?=)",
+	attributes = "\\[" + whitespace + "*(" + characterEncoding + ")" + whitespace +
+		"*(?:" + operators + whitespace + "*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|(" + identifier + ")|)|)" + whitespace + "*\\]",
+
+	// Prefer arguments not in parens/brackets,
+	//   then attribute selectors and non-pseudos (denoted by :),
+	//   then anything else
+	// These preferences are here to reduce the number of selectors
+	//   needing tokenize in the PSEUDO preFilter
+	pseudos = ":(" + characterEncoding + ")(?:\\((?:(['\"])((?:\\\\.|[^\\\\])*?)\\2|([^()[\\]]*|(?:(?:" + attributes + ")|[^:]|\\\\.)*|.*))\\)|)",
+
+	// For matchExpr.POS and matchExpr.needsContext
+	pos = ":(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace +
+		"*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)",
+
+	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
+	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),
+
+	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
+	rcombinators = new RegExp( "^" + whitespace + "*([\\x20\\t\\r\\n\\f>+~])" + whitespace + "*" ),
+	rpseudo = new RegExp( pseudos ),
+
+	// Easily-parseable/retrievable ID or TAG or CLASS selectors
+	rquickExpr = /^(?:#([\w\-]+)|(\w+)|\.([\w\-]+))$/,
+
+	rnot = /^:not/,
+	rsibling = /[\x20\t\r\n\f]*[+~]/,
+	rendsWithNot = /:not\($/,
+
+	rheader = /h\d/i,
+	rinputs = /input|select|textarea|button/i,
+
+	rbackslash = /\\(?!\\)/g,
+
+	matchExpr = {
+		"ID": new RegExp( "^#(" + characterEncoding + ")" ),
+		"CLASS": new RegExp( "^\\.(" + characterEncoding + ")" ),
+		"NAME": new RegExp( "^\\[name=['\"]?(" + characterEncoding + ")['\"]?\\]" ),
+		"TAG": new RegExp( "^(" + characterEncoding.replace( "w", "w*" ) + ")" ),
+		"ATTR": new RegExp( "^" + attributes ),
+		"PSEUDO": new RegExp( "^" + pseudos ),
+		"POS": new RegExp( pos, "i" ),
+		"CHILD": new RegExp( "^:(only|nth|first|last)-child(?:\\(" + whitespace +
+			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
+			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
+		// For use in libraries implementing .is()
+		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|" + pos, "i" )
+	},
+
+	// Support
+
+	// Used for testing something on an element
+	assert = function( fn ) {
+		var div = document.createElement("div");
+
+		try {
+			return fn( div );
+		} catch (e) {
+			return false;
+		} finally {
+			// release memory in IE
+			div = null;
+		}
+	},
+
+	// Check if getElementsByTagName("*") returns only elements
+	assertTagNameNoComments = assert(function( div ) {
+		div.appendChild( document.createComment("") );
+		return !div.getElementsByTagName("*").length;
+	}),
+
+	// Check if getAttribute returns normalized href attributes
+	assertHrefNotNormalized = assert(function( div ) {
+		div.innerHTML = "<a href='#'></a>";
+		return div.firstChild && typeof div.firstChild.getAttribute !== strundefined &&
+			div.firstChild.getAttribute("href") === "#";
+	}),
+
+	// Check if attributes should be retrieved by attribute nodes
+	assertAttributes = assert(function( div ) {
+		div.innerHTML = "<select></select>";
+		var type = typeof div.lastChild.getAttribute("multiple");
+		// IE8 returns a string for some attributes even when not present
+		return type !== "boolean" && type !== "string";
+	}),
+
+	// Check if getElementsByClassName can be trusted
+	assertUsableClassName = assert(function( div ) {
+		// Opera can't find a second classname (in 9.6)
+		div.innerHTML = "<div class='hidden e'></div><div class='hidden'></div>";
+		if ( !div.getElementsByClassName || !div.getElementsByClassName("e").length ) {
+			return false;
+		}
+
+		// Safari 3.2 caches class attributes and doesn't catch changes
+		div.lastChild.className = "e";
+		return div.getElementsByClassName("e").length === 2;
+	}),
+
+	// Check if getElementById returns elements by name
+	// Check if getElementsByName privileges form controls or returns elements by ID
+	assertUsableName = assert(function( div ) {
+		// Inject content
+		div.id = expando + 0;
+		div.innerHTML = "<a name='" + expando + "'></a><div name='" + expando + "'></div>";
+		docElem.insertBefore( div, docElem.firstChild );
+
+		// Test
+		var pass = document.getElementsByName &&
+			// buggy browsers will return fewer than the correct 2
+			document.getElementsByName( expando ).length === 2 +
+			// buggy browsers will return more than the correct 0
+			document.getElementsByName( expando + 0 ).length;
+		assertGetIdNotName = !document.getElementById( expando );
+
+		// Cleanup
+		docElem.removeChild( div );
+
+		return pass;
+	});
+
+// If slice is not available, provide a backup
+try {
+	slice.call( docElem.childNodes, 0 )[0].nodeType;
+} catch ( e ) {
+	slice = function( i ) {
+		var elem,
+			results = [];
+		for ( ; (elem = this[i]); i++ ) {
+			results.push( elem );
+		}
+		return results;
+	};
+}
+
+function Sizzle( selector, context, results, seed ) {
+	results = results || [];
+	context = context || document;
+	var match, elem, xml, m,
+		nodeType = context.nodeType;
+
+	if ( !selector || typeof selector !== "string" ) {
+		return results;
+	}
+
+	if ( nodeType !== 1 && nodeType !== 9 ) {
+		return [];
+	}
+
+	xml = isXML( context );
+
+	if ( !xml && !seed ) {
+		if ( (match = rquickExpr.exec( selector )) ) {
+			// Speed-up: Sizzle("#ID")
+			if ( (m = match[1]) ) {
+				if ( nodeType === 9 ) {
+					elem = context.getElementById( m );
+					// Check parentNode to catch when Blackberry 4.6 returns
+					// nodes that are no longer in the document #6963
+					if ( elem && elem.parentNode ) {
+						// Handle the case where IE, Opera, and Webkit return items
+						// by name instead of ID
+						if ( elem.id === m ) {
+							results.push( elem );
+							return results;
+						}
+					} else {
+						return results;
+					}
+				} else {
+					// Context is not a document
+					if ( context.ownerDocument && (elem = context.ownerDocument.getElementById( m )) &&
+						contains( context, elem ) && elem.id === m ) {
+						results.push( elem );
+						return results;
+					}
+				}
+
+			// Speed-up: Sizzle("TAG")
+			} else if ( match[2] ) {
+				push.apply( results, slice.call(context.getElementsByTagName( selector ), 0) );
+				return results;
+
+			// Speed-up: Sizzle(".CLASS")
+			} else if ( (m = match[3]) && assertUsableClassName && context.getElementsByClassName ) {
+				push.apply( results, slice.call(context.getElementsByClassName( m ), 0) );
+				return results;
+			}
+		}
+	}
+
+	// All others
+	return select( selector.replace( rtrim, "$1" ), context, results, seed, xml );
+}
+
+Sizzle.matches = function( expr, elements ) {
+	return Sizzle( expr, null, null, elements );
+};
+
+Sizzle.matchesSelector = function( elem, expr ) {
+	return Sizzle( expr, null, null, [ elem ] ).length > 0;
+};
+
+// Returns a function to use in pseudos for input types
+function createInputPseudo( type ) {
+	return function( elem ) {
+		var name = elem.nodeName.toLowerCase();
+		return name === "input" && elem.type === type;
+	};
+}
+
+// Returns a function to use in pseudos for buttons
+function createButtonPseudo( type ) {
+	return function( elem ) {
+		var name = elem.nodeName.toLowerCase();
+		return (name === "input" || name === "button") && elem.type === type;
+	};
+}
+
+// Returns a function to use in pseudos for positionals
+function createPositionalPseudo( fn ) {
+	return markFunction(function( argument ) {
+		argument = +argument;
+		return markFunction(function( seed, matches ) {
+			var j,
+				matchIndexes = fn( [], seed.length, argument ),
+				i = matchIndexes.length;
+
+			// Match elements found at the specified indexes
+			while ( i-- ) {
+				if ( seed[ (j = matchIndexes[i]) ] ) {
+					seed[j] = !(matches[j] = seed[j]);
+				}
+			}
+		});
+	});
+}
+
+/**
+ * Utility function for retrieving the text value of an array of DOM nodes
+ * @param {Array|Element} elem
+ */
+getText = Sizzle.getText = function( elem ) {
+	var node,
+		ret = "",
+		i = 0,
+		nodeType = elem.nodeType;
+
+	if ( nodeType ) {
+		if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
+			// Use textContent for elements
+			// innerText usage removed for consistency of new lines (see #11153)
+			if ( typeof elem.textContent === "string" ) {
+				return elem.textContent;
+			} else {
+				// Traverse its children
+				for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
+					ret += getText( elem );
+				}
+			}
+		} else if ( nodeType === 3 || nodeType === 4 ) {
+			return elem.nodeValue;
+		}
+		// Do not include comment or processing instruction nodes
+	} else {
+
+		// If no nodeType, this is expected to be an array
+		for ( ; (node = elem[i]); i++ ) {
+			// Do not traverse comment nodes
+			ret += getText( node );
+		}
+	}
+	return ret;
+};
+
+isXML = Sizzle.isXML = function( elem ) {
+	// documentElement is verified for cases where it doesn't yet exist
+	// (such as loading iframes in IE - #4833)
+	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
+	return documentElement ? documentElement.nodeName !== "HTML" : false;
+};
+
+// Element contains another
+contains = Sizzle.contains = docElem.contains ?
+	function( a, b ) {
+		var adown = a.nodeType === 9 ? a.documentElement : a,
+			bup = b && b.parentNode;
+		return a === bup || !!( bup && bup.nodeType === 1 && adown.contains && adown.contains(bup) );
+	} :
+	docElem.compareDocumentPosition ?
+	function( a, b ) {
+		return b && !!( a.compareDocumentPosition( b ) & 16 );
+	} :
+	function( a, b ) {
+		while ( (b = b.parentNode) ) {
+			if ( b === a ) {
+				return true;
+			}
+		}
+		return false;
+	};
+
+Sizzle.attr = function( elem, name ) {
+	var val,
+		xml = isXML( elem );
+
+	if ( !xml ) {
+		name = name.toLowerCase();
+	}
+	if ( (val = Expr.attrHandle[ name ]) ) {
+		return val( elem );
+	}
+	if ( xml || assertAttributes ) {
+		return elem.getAttribute( name );
+	}
+	val = elem.getAttributeNode( name );
+	return val ?
+		typeof elem[ name ] === "boolean" ?
+			elem[ name ] ? name : null :
+			val.specified ? val.value : null :
+		null;
+};
+
+Expr = Sizzle.selectors = {
+
+	// Can be adjusted by the user
+	cacheLength: 50,
+
+	createPseudo: markFunction,
+
+	match: matchExpr,
+
+	// IE6/7 return a modified href
+	attrHandle: assertHrefNotNormalized ?
+		{} :
+		{
+			"href": function( elem ) {
+				return elem.getAttribute( "href", 2 );
+			},
+			"type": function( elem ) {
+				return elem.getAttribute("type");
+			}
+		},
+
+	find: {
+		"ID": assertGetIdNotName ?
+			function( id, context, xml ) {
+				if ( typeof context.getElementById !== strundefined && !xml ) {
+					var m = context.getElementById( id );
+					// Check parentNode to catch when Blackberry 4.6 returns
+					// nodes that are no longer in the document #6963
+					return m && m.parentNode ? [m] : [];
+				}
+			} :
+			function( id, context, xml ) {
+				if ( typeof context.getElementById !== strundefined && !xml ) {
+					var m = context.getElementById( id );
+
+					return m ?
+						m.id === id || typeof m.getAttributeNode !== strundefined && m.getAttributeNode("id").value === id ?
+							[m] :
+							undefined :
+						[];
+				}
+			},
+
+		"TAG": assertTagNameNoComments ?
+			function( tag, context ) {
+				if ( typeof context.getElementsByTagName !== strundefined ) {
+					return context.getElementsByTagName( tag );
+				}
+			} :
+			function( tag, context ) {
+				var results = context.getElementsByTagName( tag );
+
+				// Filter out possible comments
+				if ( tag === "*" ) {
+					var elem,
+						tmp = [],
+						i = 0;
+
+					for ( ; (elem = results[i]); i++ ) {
+						if ( elem.nodeType === 1 ) {
+							tmp.push( elem );
+						}
+					}
+
+					return tmp;
+				}
+				return results;
+			},
+
+		"NAME": assertUsableName && function( tag, context ) {
+			if ( typeof context.getElementsByName !== strundefined ) {
+				return context.getElementsByName( name );
+			}
+		},
+
+		"CLASS": assertUsableClassName && function( className, context, xml ) {
+			if ( typeof context.getElementsByClassName !== strundefined && !xml ) {
+				return context.getElementsByClassName( className );
+			}
+		}
+	},
+
+	relative: {
+		">": { dir: "parentNode", first: true },
+		" ": { dir: "parentNode" },
+		"+": { dir: "previousSibling", first: true },
+		"~": { dir: "previousSibling" }
+	},
+
+	preFilter: {
+		"ATTR": function( match ) {
+			match[1] = match[1].replace( rbackslash, "" );
+
+			// Move the given value to match[3] whether quoted or unquoted
+			match[3] = ( match[4] || match[5] || "" ).replace( rbackslash, "" );
+
+			if ( match[2] === "~=" ) {
+				match[3] = " " + match[3] + " ";
+			}
+
+			return match.slice( 0, 4 );
+		},
+
+		"CHILD": function( match ) {
+			/* matches from matchExpr["CHILD"]
+				1 type (only|nth|...)
+				2 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
+				3 xn-component of xn+y argument ([+-]?\d*n|)
+				4 sign of xn-component
+				5 x of xn-component
+				6 sign of y-component
+				7 y of y-component
+			*/
+			match[1] = match[1].toLowerCase();
+
+			if ( match[1] === "nth" ) {
+				// nth-child requires argument
+				if ( !match[2] ) {
+					Sizzle.error( match[0] );
+				}
+
+				// numeric x and y parameters for Expr.filter.CHILD
+				// remember that false/true cast respectively to 0/1
+				match[3] = +( match[3] ? match[4] + (match[5] || 1) : 2 * ( match[2] === "even" || match[2] === "odd" ) );
+				match[4] = +( ( match[6] + match[7] ) || match[2] === "odd" );
+
+			// other types prohibit arguments
+			} else if ( match[2] ) {
+				Sizzle.error( match[0] );
+			}
+
+			return match;
+		},
+
+		"PSEUDO": function( match ) {
+			var unquoted, excess;
+			if ( matchExpr["CHILD"].test( match[0] ) ) {
+				return null;
+			}
+
+			if ( match[3] ) {
+				match[2] = match[3];
+			} else if ( (unquoted = match[4]) ) {
+				// Only check arguments that contain a pseudo
+				if ( rpseudo.test(unquoted) &&
+					// Get excess from tokenize (recursively)
+					(excess = tokenize( unquoted, true )) &&
+					// advance to the next closing parenthesis
+					(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {
+
+					// excess is a negative index
+					unquoted = unquoted.slice( 0, excess );
+					match[0] = match[0].slice( 0, excess );
+				}
+				match[2] = unquoted;
+			}
+
+			// Return only captures needed by the pseudo filter method (type and argument)
+			return match.slice( 0, 3 );
+		}
+	},
+
+	filter: {
+		"ID": assertGetIdNotName ?
+			function( id ) {
+				id = id.replace( rbackslash, "" );
+				return function( elem ) {
+					return elem.getAttribute("id") === id;
+				};
+			} :
+			function( id ) {
+				id = id.replace( rbackslash, "" );
+				return function( elem ) {
+					var node = typeof elem.getAttributeNode !== strundefined && elem.getAttributeNode("id");
+					return node && node.value === id;
+				};
+			},
+
+		"TAG": function( nodeName ) {
+			if ( nodeName === "*" ) {
+				return function() { return true; };
+			}
+			nodeName = nodeName.replace( rbackslash, "" ).toLowerCase();
+
+			return function( elem ) {
+				return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
+			};
+		},
+
+		"CLASS": function( className ) {
+			var pattern = classCache[ expando ][ className + " " ];
+
+			return pattern ||
+				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
+				classCache( className, function( elem ) {
+					return pattern.test( elem.className || (typeof elem.getAttribute !== strundefined && elem.getAttribute("class")) || "" );
+				});
+		},
+
+		"ATTR": function( name, operator, check ) {
+			return function( elem, context ) {
+				var result = Sizzle.attr( elem, name );
+
+				if ( result == null ) {
+					return operator === "!=";
+				}
+				if ( !operator ) {
+					return true;
+				}
+
+				result += "";
+
+				return operator === "=" ? result === check :
+					operator === "!=" ? result !== check :
+					operator === "^=" ? check && result.indexOf( check ) === 0 :
+					operator === "*=" ? check && result.indexOf( check ) > -1 :
+					operator === "$=" ? check && result.substr( result.length - check.length ) === check :
+					operator === "~=" ? ( " " + result + " " ).indexOf( check ) > -1 :
+					operator === "|=" ? result === check || result.substr( 0, check.length + 1 ) === check + "-" :
+					false;
+			};
+		},
+
+		"CHILD": function( type, argument, first, last ) {
+
+			if ( type === "nth" ) {
+				return function( elem ) {
+					var node, diff,
+						parent = elem.parentNode;
+
+					if ( first === 1 && last === 0 ) {
+						return true;
+					}
+
+					if ( parent ) {
+						diff = 0;
+						for ( node = parent.firstChild; node; node = node.nextSibling ) {
+							if ( node.nodeType === 1 ) {
+								diff++;
+								if ( elem === node ) {
+									break;
+								}
+							}
+						}
+					}
+
+					// Incorporate the offset (or cast to NaN), then check against cycle size
+					diff -= last;
+					return diff === first || ( diff % first === 0 && diff / first >= 0 );
+				};
+			}
+
+			return function( elem ) {
+				var node = elem;
+
+				switch ( type ) {
+					case "only":
+					case "first":
+						while ( (node = node.previousSibling) ) {
+							if ( node.nodeType === 1 ) {
+								return false;
+							}
+						}
+
+						if ( type === "first" ) {
+							return true;
+						}
+
+						node = elem;
+
+						/* falls through */
+					case "last":
+						while ( (node = node.nextSibling) ) {
+							if ( node.nodeType === 1 ) {
+								return false;
+							}
+						}
+
+						return true;
+				}
+			};
+		},
+
+		"PSEUDO": function( pseudo, argument ) {
+			// pseudo-class names are case-insensitive
+			// http://www.w3.org/TR/selectors/#pseudo-classes
+			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
+			// Remember that setFilters inherits from pseudos
+			var args,
+				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
+					Sizzle.error( "unsupported pseudo: " + pseudo );
+
+			// The user may use createPseudo to indicate that
+			// arguments are needed to create the filter function
+			// just as Sizzle does
+			if ( fn[ expando ] ) {
+				return fn( argument );
+			}
+
+			// But maintain support for old signatures
+			if ( fn.length > 1 ) {
+				args = [ pseudo, pseudo, "", argument ];
+				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
+					markFunction(function( seed, matches ) {
+						var idx,
+							matched = fn( seed, argument ),
+							i = matched.length;
+						while ( i-- ) {
+							idx = indexOf.call( seed, matched[i] );
+							seed[ idx ] = !( matches[ idx ] = matched[i] );
+						}
+					}) :
+					function( elem ) {
+						return fn( elem, 0, args );
+					};
+			}
+
+			return fn;
+		}
+	},
+
+	pseudos: {
+		"not": markFunction(function( selector ) {
+			// Trim the selector passed to compile
+			// to avoid treating leading and trailing
+			// spaces as combinators
+			var input = [],
+				results = [],
+				matcher = compile( selector.replace( rtrim, "$1" ) );
+
+			return matcher[ expando ] ?
+				markFunction(function( seed, matches, context, xml ) {
+					var elem,
+						unmatched = matcher( seed, null, xml, [] ),
+						i = seed.length;
+
+					// Match elements unmatched by `matcher`
+					while ( i-- ) {
+						if ( (elem = unmatched[i]) ) {
+							seed[i] = !(matches[i] = elem);
+						}
+					}
+				}) :
+				function( elem, context, xml ) {
+					input[0] = elem;
+					matcher( input, null, xml, results );
+					return !results.pop();
+				};
+		}),
+
+		"has": markFunction(function( selector ) {
+			return function( elem ) {
+				return Sizzle( selector, elem ).length > 0;
+			};
+		}),
+
+		"contains": markFunction(function( text ) {
+			return function( elem ) {
+				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
+			};
+		}),
+
+		"enabled": function( elem ) {
+			return elem.disabled === false;
+		},
+
+		"disabled": function( elem ) {
+			return elem.disabled === true;
+		},
+
+		"checked": function( elem ) {
+			// In CSS3, :checked should return both checked and selected elements
+			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+			var nodeName = elem.nodeName.toLowerCase();
+			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
+		},
+
+		"selected": function( elem ) {
+			// Accessing this property makes selected-by-default
+			// options in Safari work properly
+			if ( elem.parentNode ) {
+				elem.parentNode.selectedIndex;
+			}
+
+			return elem.selected === true;
+		},
+
+		"parent": function( elem ) {
+			return !Expr.pseudos["empty"]( elem );
+		},
+
+		"empty": function( elem ) {
+			// http://www.w3.org/TR/selectors/#empty-pseudo
+			// :empty is only affected by element nodes and content nodes(including text(3), cdata(4)),
+			//   not comment, processing instructions, or others
+			// Thanks to Diego Perini for the nodeName shortcut
+			//   Greater than "@" means alpha characters (specifically not starting with "#" or "?")
+			var nodeType;
+			elem = elem.firstChild;
+			while ( elem ) {
+				if ( elem.nodeName > "@" || (nodeType = elem.nodeType) === 3 || nodeType === 4 ) {
+					return false;
+				}
+				elem = elem.nextSibling;
+			}
+			return true;
+		},
+
+		"header": function( elem ) {
+			return rheader.test( elem.nodeName );
+		},
+
+		"text": function( elem ) {
+			var type, attr;
+			// IE6 and 7 will map elem.type to 'text' for new HTML5 types (search, etc)
+			// use getAttribute instead to test this case
+			return elem.nodeName.toLowerCase() === "input" &&
+				(type = elem.type) === "text" &&
+				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === type );
+		},
+
+		// Input types
+		"radio": createInputPseudo("radio"),
+		"checkbox": createInputPseudo("checkbox"),
+		"file": createInputPseudo("file"),
+		"password": createInputPseudo("password"),
+		"image": createInputPseudo("image"),
+
+		"submit": createButtonPseudo("submit"),
+		"reset": createButtonPseudo("reset"),
+
+		"button": function( elem ) {
+			var name = elem.nodeName.toLowerCase();
+			return name === "input" && elem.type === "button" || name === "button";
+		},
+
+		"input": function( elem ) {
+			return rinputs.test( elem.nodeName );
+		},
+
+		"focus": function( elem ) {
+			var doc = elem.ownerDocument;
+			return elem === doc.activeElement && (!doc.hasFocus || doc.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
+		},
+
+		"active": function( elem ) {
+			return elem === elem.ownerDocument.activeElement;
+		},
+
+		// Positional types
+		"first": createPositionalPseudo(function() {
+			return [ 0 ];
+		}),
+
+		"last": createPositionalPseudo(function( matchIndexes, length ) {
+			return [ length - 1 ];
+		}),
+
+		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
+			return [ argument < 0 ? argument + length : argument ];
+		}),
+
+		"even": createPositionalPseudo(function( matchIndexes, length ) {
+			for ( var i = 0; i < length; i += 2 ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		}),
+
+		"odd": createPositionalPseudo(function( matchIndexes, length ) {
+			for ( var i = 1; i < length; i += 2 ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		}),
+
+		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
+			for ( var i = argument < 0 ? argument + length : argument; --i >= 0; ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		}),
+
+		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
+			for ( var i = argument < 0 ? argument + length : argument; ++i < length; ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		})
+	}
+};
+
+function siblingCheck( a, b, ret ) {
+	if ( a === b ) {
+		return ret;
+	}
+
+	var cur = a.nextSibling;
+
+	while ( cur ) {
+		if ( cur === b ) {
+			return -1;
+		}
+
+		cur = cur.nextSibling;
+	}
+
+	return 1;
+}
+
+sortOrder = docElem.compareDocumentPosition ?
+	function( a, b ) {
+		if ( a === b ) {
+			hasDuplicate = true;
+			return 0;
+		}
+
+		return ( !a.compareDocumentPosition || !b.compareDocumentPosition ?
+			a.compareDocumentPosition :
+			a.compareDocumentPosition(b) & 4
+		) ? -1 : 1;
+	} :
+	function( a, b ) {
+		// The nodes are identical, we can exit early
+		if ( a === b ) {
+			hasDuplicate = true;
+			return 0;
+
+		// Fallback to using sourceIndex (in IE) if it's available on both nodes
+		} else if ( a.sourceIndex && b.sourceIndex ) {
+			return a.sourceIndex - b.sourceIndex;
+		}
+
+		var al, bl,
+			ap = [],
+			bp = [],
+			aup = a.parentNode,
+			bup = b.parentNode,
+			cur = aup;
+
+		// If the nodes are siblings (or identical) we can do a quick check
+		if ( aup === bup ) {
+			return siblingCheck( a, b );
+
+		// If no parents were found then the nodes are disconnected
+		} else if ( !aup ) {
+			return -1;
+
+		} else if ( !bup ) {
+			return 1;
+		}
+
+		// Otherwise they're somewhere else in the tree so we need
+		// to build up a full list of the parentNodes for comparison
+		while ( cur ) {
+			ap.unshift( cur );
+			cur = cur.parentNode;
+		}
+
+		cur = bup;
+
+		while ( cur ) {
+			bp.unshift( cur );
+			cur = cur.parentNode;
+		}
+
+		al = ap.length;
+		bl = bp.length;
+
+		// Start walking down the tree looking for a discrepancy
+		for ( var i = 0; i < al && i < bl; i++ ) {
+			if ( ap[i] !== bp[i] ) {
+				return siblingCheck( ap[i], bp[i] );
+			}
+		}
+
+		// We ended someplace up the tree so do a sibling check
+		return i === al ?
+			siblingCheck( a, bp[i], -1 ) :
+			siblingCheck( ap[i], b, 1 );
+	};
+
+// Always assume the presence of duplicates if sort doesn't
+// pass them to our comparison function (as in Google Chrome).
+[0, 0].sort( sortOrder );
+baseHasDuplicate = !hasDuplicate;
+
+// Document sorting and removing duplicates
+Sizzle.uniqueSort = function( results ) {
+	var elem,
+		duplicates = [],
+		i = 1,
+		j = 0;
+
+	hasDuplicate = baseHasDuplicate;
+	results.sort( sortOrder );
+
+	if ( hasDuplicate ) {
+		for ( ; (elem = results[i]); i++ ) {
+			if ( elem === results[ i - 1 ] ) {
+				j = duplicates.push( i );
+			}
+		}
+		while ( j-- ) {
+			results.splice( duplicates[ j ], 1 );
+		}
+	}
+
+	return results;
+};
+
+Sizzle.error = function( msg ) {
+	throw new Error( "Syntax error, unrecognized expression: " + msg );
+};
+
+function tokenize( selector, parseOnly ) {
+	var matched, match, tokens, type,
+		soFar, groups, preFilters,
+		cached = tokenCache[ expando ][ selector + " " ];
+
+	if ( cached ) {
+		return parseOnly ? 0 : cached.slice( 0 );
+	}
+
+	soFar = selector;
+	groups = [];
+	preFilters = Expr.preFilter;
+
+	while ( soFar ) {
+
+		// Comma and first run
+		if ( !matched || (match = rcomma.exec( soFar )) ) {
+			if ( match ) {
+				// Don't consume trailing commas as valid
+				soFar = soFar.slice( match[0].length ) || soFar;
+			}
+			groups.push( tokens = [] );
+		}
+
+		matched = false;
+
+		// Combinators
+		if ( (match = rcombinators.exec( soFar )) ) {
+			tokens.push( matched = new Token( match.shift() ) );
+			soFar = soFar.slice( matched.length );
+
+			// Cast descendant combinators to space
+			matched.type = match[0].replace( rtrim, " " );
+		}
+
+		// Filters
+		for ( type in Expr.filter ) {
+			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
+				(match = preFilters[ type ]( match ))) ) {
+
+				tokens.push( matched = new Token( match.shift() ) );
+				soFar = soFar.slice( matched.length );
+				matched.type = type;
+				matched.matches = match;
+			}
+		}
+
+		if ( !matched ) {
+			break;
+		}
+	}
+
+	// Return the length of the invalid excess
+	// if we're just parsing
+	// Otherwise, throw an error or return tokens
+	return parseOnly ?
+		soFar.length :
+		soFar ?
+			Sizzle.error( selector ) :
+			// Cache the tokens
+			tokenCache( selector, groups ).slice( 0 );
+}
+
+function addCombinator( matcher, combinator, base ) {
+	var dir = combinator.dir,
+		checkNonElements = base && combinator.dir === "parentNode",
+		doneName = done++;
+
+	return combinator.first ?
+		// Check against closest ancestor/preceding element
+		function( elem, context, xml ) {
+			while ( (elem = elem[ dir ]) ) {
+				if ( checkNonElements || elem.nodeType === 1  ) {
+					return matcher( elem, context, xml );
+				}
+			}
+		} :
+
+		// Check against all ancestor/preceding elements
+		function( elem, context, xml ) {
+			// We can't set arbitrary data on XML nodes, so they don't benefit from dir caching
+			if ( !xml ) {
+				var cache,
+					dirkey = dirruns + " " + doneName + " ",
+					cachedkey = dirkey + cachedruns;
+				while ( (elem = elem[ dir ]) ) {
+					if ( checkNonElements || elem.nodeType === 1 ) {
+						if ( (cache = elem[ expando ]) === cachedkey ) {
+							return elem.sizset;
+						} else if ( typeof cache === "string" && cache.indexOf(dirkey) === 0 ) {
+							if ( elem.sizset ) {
+								return elem;
+							}
+						} else {
+							elem[ expando ] = cachedkey;
+							if ( matcher( elem, context, xml ) ) {
+								elem.sizset = true;
+								return elem;
+							}
+							elem.sizset = false;
+						}
+					}
+				}
+			} else {
+				while ( (elem = elem[ dir ]) ) {
+					if ( checkNonElements || elem.nodeType === 1 ) {
+						if ( matcher( elem, context, xml ) ) {
+							return elem;
+						}
+					}
+				}
+			}
+		};
+}
+
+function elementMatcher( matchers ) {
+	return matchers.length > 1 ?
+		function( elem, context, xml ) {
+			var i = matchers.length;
+			while ( i-- ) {
+				if ( !matchers[i]( elem, context, xml ) ) {
+					return false;
+				}
+			}
+			return true;
+		} :
+		matchers[0];
+}
+
+function condense( unmatched, map, filter, context, xml ) {
+	var elem,
+		newUnmatched = [],
+		i = 0,
+		len = unmatched.length,
+		mapped = map != null;
+
+	for ( ; i < len; i++ ) {
+		if ( (elem = unmatched[i]) ) {
+			if ( !filter || filter( elem, context, xml ) ) {
+				newUnmatched.push( elem );
+				if ( mapped ) {
+					map.push( i );
+				}
+			}
+		}
+	}
+
+	return newUnmatched;
+}
+
+function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
+	if ( postFilter && !postFilter[ expando ] ) {
+		postFilter = setMatcher( postFilter );
+	}
+	if ( postFinder && !postFinder[ expando ] ) {
+		postFinder = setMatcher( postFinder, postSelector );
+	}
+	return markFunction(function( seed, results, context, xml ) {
+		var temp, i, elem,
+			preMap = [],
+			postMap = [],
+			preexisting = results.length,
+
+			// Get initial elements from seed or context
+			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),
+
+			// Prefilter to get matcher input, preserving a map for seed-results synchronization
+			matcherIn = preFilter && ( seed || !selector ) ?
+				condense( elems, preMap, preFilter, context, xml ) :
+				elems,
+
+			matcherOut = matcher ?
+				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
+				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?
+
+					// ...intermediate processing is necessary
+					[] :
+
+					// ...otherwise use results directly
+					results :
+				matcherIn;
+
+		// Find primary matches
+		if ( matcher ) {
+			matcher( matcherIn, matcherOut, context, xml );
+		}
+
+		// Apply postFilter
+		if ( postFilter ) {
+			temp = condense( matcherOut, postMap );
+			postFilter( temp, [], context, xml );
+
+			// Un-match failing elements by moving them back to matcherIn
+			i = temp.length;
+			while ( i-- ) {
+				if ( (elem = temp[i]) ) {
+					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
+				}
+			}
+		}
+
+		if ( seed ) {
+			if ( postFinder || preFilter ) {
+				if ( postFinder ) {
+					// Get the final matcherOut by condensing this intermediate into postFinder contexts
+					temp = [];
+					i = matcherOut.length;
+					while ( i-- ) {
+						if ( (elem = matcherOut[i]) ) {
+							// Restore matcherIn since elem is not yet a final match
+							temp.push( (matcherIn[i] = elem) );
+						}
+					}
+					postFinder( null, (matcherOut = []), temp, xml );
+				}
+
+				// Move matched elements from seed to results to keep them synchronized
+				i = matcherOut.length;
+				while ( i-- ) {
+					if ( (elem = matcherOut[i]) &&
+						(temp = postFinder ? indexOf.call( seed, elem ) : preMap[i]) > -1 ) {
+
+						seed[temp] = !(results[temp] = elem);
+					}
+				}
+			}
+
+		// Add elements to results, through postFinder if defined
+		} else {
+			matcherOut = condense(
+				matcherOut === results ?
+					matcherOut.splice( preexisting, matcherOut.length ) :
+					matcherOut
+			);
+			if ( postFinder ) {
+				postFinder( null, results, matcherOut, xml );
+			} else {
+				push.apply( results, matcherOut );
+			}
+		}
+	});
+}
+
+function matcherFromTokens( tokens ) {
+	var checkContext, matcher, j,
+		len = tokens.length,
+		leadingRelative = Expr.relative[ tokens[0].type ],
+		implicitRelative = leadingRelative || Expr.relative[" "],
+		i = leadingRelative ? 1 : 0,
+
+		// The foundational matcher ensures that elements are reachable from top-level context(s)
+		matchContext = addCombinator( function( elem ) {
+			return elem === checkContext;
+		}, implicitRelative, true ),
+		matchAnyContext = addCombinator( function( elem ) {
+			return indexOf.call( checkContext, elem ) > -1;
+		}, implicitRelative, true ),
+		matchers = [ function( elem, context, xml ) {
+			return ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
+				(checkContext = context).nodeType ?
+					matchContext( elem, context, xml ) :
+					matchAnyContext( elem, context, xml ) );
+		} ];
+
+	for ( ; i < len; i++ ) {
+		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
+			matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ];
+		} else {
+			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );
+
+			// Return special upon seeing a positional matcher
+			if ( matcher[ expando ] ) {
+				// Find the next relative operator (if any) for proper handling
+				j = ++i;
+				for ( ; j < len; j++ ) {
+					if ( Expr.relative[ tokens[j].type ] ) {
+						break;
+					}
+				}
+				return setMatcher(
+					i > 1 && elementMatcher( matchers ),
+					i > 1 && tokens.slice( 0, i - 1 ).join("").replace( rtrim, "$1" ),
+					matcher,
+					i < j && matcherFromTokens( tokens.slice( i, j ) ),
+					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
+					j < len && tokens.join("")
+				);
+			}
+			matchers.push( matcher );
+		}
+	}
+
+	return elementMatcher( matchers );
+}
+
+function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
+	var bySet = setMatchers.length > 0,
+		byElement = elementMatchers.length > 0,
+		superMatcher = function( seed, context, xml, results, expandContext ) {
+			var elem, j, matcher,
+				setMatched = [],
+				matchedCount = 0,
+				i = "0",
+				unmatched = seed && [],
+				outermost = expandContext != null,
+				contextBackup = outermostContext,
+				// We must always have either seed elements or context
+				elems = seed || byElement && Expr.find["TAG"]( "*", expandContext && context.parentNode || context ),
+				// Nested matchers should use non-integer dirruns
+				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.E);
+
+			if ( outermost ) {
+				outermostContext = context !== document && context;
+				cachedruns = superMatcher.el;
+			}
+
+			// Add elements passing elementMatchers directly to results
+			for ( ; (elem = elems[i]) != null; i++ ) {
+				if ( byElement && elem ) {
+					for ( j = 0; (matcher = elementMatchers[j]); j++ ) {
+						if ( matcher( elem, context, xml ) ) {
+							results.push( elem );
+							break;
+						}
+					}
+					if ( outermost ) {
+						dirruns = dirrunsUnique;
+						cachedruns = ++superMatcher.el;
+					}
+				}
+
+				// Track unmatched elements for set filters
+				if ( bySet ) {
+					// They will have gone through all possible matchers
+					if ( (elem = !matcher && elem) ) {
+						matchedCount--;
+					}
+
+					// Lengthen the array for every element, matched or not
+					if ( seed ) {
+						unmatched.push( elem );
+					}
+				}
+			}
+
+			// Apply set filters to unmatched elements
+			matchedCount += i;
+			if ( bySet && i !== matchedCount ) {
+				for ( j = 0; (matcher = setMatchers[j]); j++ ) {
+					matcher( unmatched, setMatched, context, xml );
+				}
+
+				if ( seed ) {
+					// Reintegrate element matches to eliminate the need for sorting
+					if ( matchedCount > 0 ) {
+						while ( i-- ) {
+							if ( !(unmatched[i] || setMatched[i]) ) {
+								setMatched[i] = pop.call( results );
+							}
+						}
+					}
+
+					// Discard index placeholder values to get only actual matches
+					setMatched = condense( setMatched );
+				}
+
+				// Add matches to results
+				push.apply( results, setMatched );
+
+				// Seedless set matches succeeding multiple successful matchers stipulate sorting
+				if ( outermost && !seed && setMatched.length > 0 &&
+					( matchedCount + setMatchers.length ) > 1 ) {
+
+					Sizzle.uniqueSort( results );
+				}
+			}
+
+			// Override manipulation of globals by nested matchers
+			if ( outermost ) {
+				dirruns = dirrunsUnique;
+				outermostContext = contextBackup;
+			}
+
+			return unmatched;
+		};
+
+	superMatcher.el = 0;
+	return bySet ?
+		markFunction( superMatcher ) :
+		superMatcher;
+}
+
+compile = Sizzle.compile = function( selector, group /* Internal Use Only */ ) {
+	var i,
+		setMatchers = [],
+		elementMatchers = [],
+		cached = compilerCache[ expando ][ selector + " " ];
+
+	if ( !cached ) {
+		// Generate a function of recursive functions that can be used to check each element
+		if ( !group ) {
+			group = tokenize( selector );
+		}
+		i = group.length;
+		while ( i-- ) {
+			cached = matcherFromTokens( group[i] );
+			if ( cached[ expando ] ) {
+				setMatchers.push( cached );
+			} else {
+				elementMatchers.push( cached );
+			}
+		}
+
+		// Cache the compiled function
+		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );
+	}
+	return cached;
+};
+
+function multipleContexts( selector, contexts, results ) {
+	var i = 0,
+		len = contexts.length;
+	for ( ; i < len; i++ ) {
+		Sizzle( selector, contexts[i], results );
+	}
+	return results;
+}
+
+function select( selector, context, results, seed, xml ) {
+	var i, tokens, token, type, find,
+		match = tokenize( selector ),
+		j = match.length;
+
+	if ( !seed ) {
+		// Try to minimize operations if there is only one group
+		if ( match.length === 1 ) {
+
+			// Take a shortcut and set the context if the root selector is an ID
+			tokens = match[0] = match[0].slice( 0 );
+			if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
+					context.nodeType === 9 && !xml &&
+					Expr.relative[ tokens[1].type ] ) {
+
+				context = Expr.find["ID"]( token.matches[0].replace( rbackslash, "" ), context, xml )[0];
+				if ( !context ) {
+					return results;
+				}
+
+				selector = selector.slice( tokens.shift().length );
+			}
+
+			// Fetch a seed set for right-to-left matching
+			for ( i = matchExpr["POS"].test( selector ) ? -1 : tokens.length - 1; i >= 0; i-- ) {
+				token = tokens[i];
+
+				// Abort if we hit a combinator
+				if ( Expr.relative[ (type = token.type) ] ) {
+					break;
+				}
+				if ( (find = Expr.find[ type ]) ) {
+					// Search, expanding context for leading sibling combinators
+					if ( (seed = find(
+						token.matches[0].replace( rbackslash, "" ),
+						rsibling.test( tokens[0].type ) && context.parentNode || context,
+						xml
+					)) ) {
+
+						// If seed is empty or no tokens remain, we can return early
+						tokens.splice( i, 1 );
+						selector = seed.length && tokens.join("");
+						if ( !selector ) {
+							push.apply( results, slice.call( seed, 0 ) );
+							return results;
+						}
+
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	// Compile and execute a filtering function
+	// Provide `match` to avoid retokenization if we modified the selector above
+	compile( selector, match )(
+		seed,
+		context,
+		xml,
+		results,
+		rsibling.test( selector )
+	);
+	return results;
+}
+
+if ( document.querySelectorAll ) {
+	(function() {
+		var disconnectedMatch,
+			oldSelect = select,
+			rescape = /'|\\/g,
+			rattributeQuotes = /\=[\x20\t\r\n\f]*([^'"\]]*)[\x20\t\r\n\f]*\]/g,
+
+			// qSa(:focus) reports false when true (Chrome 21), no need to also add to buggyMatches since matches checks buggyQSA
+			// A support test would require too much code (would include document ready)
+			rbuggyQSA = [ ":focus" ],
+
+			// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
+			// A support test would require too much code (would include document ready)
+			// just skip matchesSelector for :active
+			rbuggyMatches = [ ":active" ],
+			matches = docElem.matchesSelector ||
+				docElem.mozMatchesSelector ||
+				docElem.webkitMatchesSelector ||
+				docElem.oMatchesSelector ||
+				docElem.msMatchesSelector;
+
+		// Build QSA regex
+		// Regex strategy adopted from Diego Perini
+		assert(function( div ) {
+			// Select is set to empty string on purpose
+			// This is to test IE's treatment of not explictly
+			// setting a boolean content attribute,
+			// since its presence should be enough
+			// http://bugs.jquery.com/ticket/12359
+			div.innerHTML = "<select><option selected=''></option></select>";
+
+			// IE8 - Some boolean attributes are not treated correctly
+			if ( !div.querySelectorAll("[selected]").length ) {
+				rbuggyQSA.push( "\\[" + whitespace + "*(?:checked|disabled|ismap|multiple|readonly|selected|value)" );
+			}
+
+			// Webkit/Opera - :checked should return selected option elements
+			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+			// IE8 throws error here (do not put tests after this one)
+			if ( !div.querySelectorAll(":checked").length ) {
+				rbuggyQSA.push(":checked");
+			}
+		});
+
+		assert(function( div ) {
+
+			// Opera 10-12/IE9 - ^= $= *= and empty values
+			// Should not select anything
+			div.innerHTML = "<p test=''></p>";
+			if ( div.querySelectorAll("[test^='']").length ) {
+				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:\"\"|'')" );
+			}
+
+			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
+			// IE8 throws error here (do not put tests after this one)
+			div.innerHTML = "<input type='hidden'/>";
+			if ( !div.querySelectorAll(":enabled").length ) {
+				rbuggyQSA.push(":enabled", ":disabled");
+			}
+		});
+
+		// rbuggyQSA always contains :focus, so no need for a length check
+		rbuggyQSA = /* rbuggyQSA.length && */ new RegExp( rbuggyQSA.join("|") );
+
+		select = function( selector, context, results, seed, xml ) {
+			// Only use querySelectorAll when not filtering,
+			// when this is not xml,
+			// and when no QSA bugs apply
+			if ( !seed && !xml && !rbuggyQSA.test( selector ) ) {
+				var groups, i,
+					old = true,
+					nid = expando,
+					newContext = context,
+					newSelector = context.nodeType === 9 && selector;
+
+				// qSA works strangely on Element-rooted queries
+				// We can work around this by specifying an extra ID on the root
+				// and working up from there (Thanks to Andrew Dupont for the technique)
+				// IE 8 doesn't work on object elements
+				if ( context.nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) {
+					groups = tokenize( selector );
+
+					if ( (old = context.getAttribute("id")) ) {
+						nid = old.replace( rescape, "\\$&" );
+					} else {
+						context.setAttribute( "id", nid );
+					}
+					nid = "[id='" + nid + "'] ";
+
+					i = groups.length;
+					while ( i-- ) {
+						groups[i] = nid + groups[i].join("");
+					}
+					newContext = rsibling.test( selector ) && context.parentNode || context;
+					newSelector = groups.join(",");
+				}
+
+				if ( newSelector ) {
+					try {
+						push.apply( results, slice.call( newContext.querySelectorAll(
+							newSelector
+						), 0 ) );
+						return results;
+					} catch(qsaError) {
+					} finally {
+						if ( !old ) {
+							context.removeAttribute("id");
+						}
+					}
+				}
+			}
+
+			return oldSelect( selector, context, results, seed, xml );
+		};
+
+		if ( matches ) {
+			assert(function( div ) {
+				// Check to see if it's possible to do matchesSelector
+				// on a disconnected node (IE 9)
+				disconnectedMatch = matches.call( div, "div" );
+
+				// This should fail with an exception
+				// Gecko does not error, returns false instead
+				try {
+					matches.call( div, "[test!='']:sizzle" );
+					rbuggyMatches.push( "!=", pseudos );
+				} catch ( e ) {}
+			});
+
+			// rbuggyMatches always contains :active and :focus, so no need for a length check
+			rbuggyMatches = /* rbuggyMatches.length && */ new RegExp( rbuggyMatches.join("|") );
+
+			Sizzle.matchesSelector = function( elem, expr ) {
+				// Make sure that attribute selectors are quoted
+				expr = expr.replace( rattributeQuotes, "='$1']" );
+
+				// rbuggyMatches always contains :active, so no need for an existence check
+				if ( !isXML( elem ) && !rbuggyMatches.test( expr ) && !rbuggyQSA.test( expr ) ) {
+					try {
+						var ret = matches.call( elem, expr );
+
+						// IE 9's matchesSelector returns false on disconnected nodes
+						if ( ret || disconnectedMatch ||
+								// As well, disconnected nodes are said to be in a document
+								// fragment in IE 9
+								elem.document && elem.document.nodeType !== 11 ) {
+							return ret;
+						}
+					} catch(e) {}
+				}
+
+				return Sizzle( expr, null, null, [ elem ] ).length > 0;
+			};
+		}
+	})();
+}
+
+// Deprecated
+Expr.pseudos["nth"] = Expr.pseudos["eq"];
+
+// Back-compat
+function setFilters() {}
+Expr.filters = setFilters.prototype = Expr.pseudos;
+Expr.setFilters = new setFilters();
+
+// Override sizzle attribute retrieval
+Sizzle.attr = jQuery.attr;
+jQuery.find = Sizzle;
+jQuery.expr = Sizzle.selectors;
+jQuery.expr[":"] = jQuery.expr.pseudos;
+jQuery.unique = Sizzle.uniqueSort;
+jQuery.text = Sizzle.getText;
+jQuery.isXMLDoc = Sizzle.isXML;
+jQuery.contains = Sizzle.contains;
+
+
+})( window );
+var runtil = /Until$/,
+	rparentsprev = /^(?:parents|prev(?:Until|All))/,
+	isSimple = /^.[^:#\[\.,]*$/,
+	rneedsContext = jQuery.expr.match.needsContext,
+	// methods guaranteed to produce a unique set when starting from a unique set
+	guaranteedUnique = {
+		children: true,
+		contents: true,
+		next: true,
+		prev: true
+	};
+
+jQuery.fn.extend({
+	find: function( selector ) {
+		var i, l, length, n, r, ret,
+			self = this;
+
+		if ( typeof selector !== "string" ) {
+			return jQuery( selector ).filter(function() {
+				for ( i = 0, l = self.length; i < l; i++ ) {
+					if ( jQuery.contains( self[ i ], this ) ) {
+						return true;
+					}
+				}
+			});
+		}
+
+		ret = this.pushStack( "", "find", selector );
+
+		for ( i = 0, l = this.length; i < l; i++ ) {
+			length = ret.length;
+			jQuery.find( selector, this[i], ret );
+
+			if ( i > 0 ) {
+				// Make sure that the results are unique
+				for ( n = length; n < ret.length; n++ ) {
+					for ( r = 0; r < length; r++ ) {
+						if ( ret[r] === ret[n] ) {
+							ret.splice(n--, 1);
+							break;
+						}
+					}
+				}
+			}
+		}
+
+		return ret;
+	},
+
+	has: function( target ) {
+		var i,
+			targets = jQuery( target, this ),
+			len = targets.length;
+
+		return this.filter(function() {
+			for ( i = 0; i < len; i++ ) {
+				if ( jQuery.contains( this, targets[i] ) ) {
+					return true;
+				}
+			}
+		});
+	},
+
+	not: function( selector ) {
+		return this.pushStack( winnow(this, selector, false), "not", selector);
+	},
+
+	filter: function( selector ) {
+		return this.pushStack( winnow(this, selector, true), "filter", selector );
+	},
+
+	is: function( selector ) {
+		return !!selector && (
+			typeof selector === "string" ?
+				// If this is a positional/relative selector, check membership in the returned set
+				// so $("p:first").is("p:last") won't return true for a doc with two "p".
+				rneedsContext.test( selector ) ?
+					jQuery( selector, this.context ).index( this[0] ) >= 0 :
+					jQuery.filter( selector, this ).length > 0 :
+				this.filter( selector ).length > 0 );
+	},
+
+	closest: function( selectors, context ) {
+		var cur,
+			i = 0,
+			l = this.length,
+			ret = [],
+			pos = rneedsContext.test( selectors ) || typeof selectors !== "string" ?
+				jQuery( selectors, context || this.context ) :
+				0;
+
+		for ( ; i < l; i++ ) {
+			cur = this[i];
+
+			while ( cur && cur.ownerDocument && cur !== context && cur.nodeType !== 11 ) {
+				if ( pos ? pos.index(cur) > -1 : jQuery.find.matchesSelector(cur, selectors) ) {
+					ret.push( cur );
+					break;
+				}
+				cur = cur.parentNode;
+			}
+		}
+
+		ret = ret.length > 1 ? jQuery.unique( ret ) : ret;
+
+		return this.pushStack( ret, "closest", selectors );
+	},
+
+	// Determine the position of an element within
+	// the matched set of elements
+	index: function( elem ) {
+
+		// No argument, return index in parent
+		if ( !elem ) {
+			return ( this[0] && this[0].parentNode ) ? this.prevAll().length : -1;
+		}
+
+		// index in selector
+		if ( typeof elem === "string" ) {
+			return jQuery.inArray( this[0], jQuery( elem ) );
+		}
+
+		// Locate the position of the desired element
+		return jQuery.inArray(
+			// If it receives a jQuery object, the first element is used
+			elem.jquery ? elem[0] : elem, this );
+	},
+
+	add: function( selector, context ) {
+		var set = typeof selector === "string" ?
+				jQuery( selector, context ) :
+				jQuery.makeArray( selector && selector.nodeType ? [ selector ] : selector ),
+			all = jQuery.merge( this.get(), set );
+
+		return this.pushStack( isDisconnected( set[0] ) || isDisconnected( all[0] ) ?
+			all :
+			jQuery.unique( all ) );
+	},
+
+	addBack: function( selector ) {
+		return this.add( selector == null ?
+			this.prevObject : this.prevObject.filter(selector)
+		);
+	}
+});
+
+jQuery.fn.andSelf = jQuery.fn.addBack;
+
+// A painfully simple check to see if an element is disconnected
+// from a document (should be improved, where feasible).
+function isDisconnected( node ) {
+	return !node || !node.parentNode || node.parentNode.nodeType === 11;
+}
+
+function sibling( cur, dir ) {
+	do {
+		cur = cur[ dir ];
+	} while ( cur && cur.nodeType !== 1 );
+
+	return cur;
+}
+
+jQuery.each({
+	parent: function( elem ) {
+		var parent = elem.parentNode;
+		return parent && parent.nodeType !== 11 ? parent : null;
+	},
+	parents: function( elem ) {
+		return jQuery.dir( elem, "parentNode" );
+	},
+	parentsUntil: function( elem, i, until ) {
+		return jQuery.dir( elem, "parentNode", until );
+	},
+	next: function( elem ) {
+		return sibling( elem, "nextSibling" );
+	},
+	prev: function( elem ) {
+		return sibling( elem, "previousSibling" );
+	},
+	nextAll: function( elem ) {
+		return jQuery.dir( elem, "nextSibling" );
+	},
+	prevAll: function( elem ) {
+		return jQuery.dir( elem, "previousSibling" );
+	},
+	nextUntil: function( elem, i, until ) {
+		return jQuery.dir( elem, "nextSibling", until );
+	},
+	prevUntil: function( elem, i, until ) {
+		return jQuery.dir( elem, "previousSibling", until );
+	},
+	siblings: function( elem ) {
+		return jQuery.sibling( ( elem.parentNode || {} ).firstChild, elem );
+	},
+	children: function( elem ) {
+		return jQuery.sibling( elem.firstChild );
+	},
+	contents: function( elem ) {
+		return jQuery.nodeName( elem, "iframe" ) ?
+			elem.contentDocument || elem.contentWindow.document :
+			jQuery.merge( [], elem.childNodes );
+	}
+}, function( name, fn ) {
+	jQuery.fn[ name ] = function( until, selector ) {
+		var ret = jQuery.map( this, fn, until );
+
+		if ( !runtil.test( name ) ) {
+			selector = until;
+		}
+
+		if ( selector && typeof selector === "string" ) {
+			ret = jQuery.filter( selector, ret );
+		}
+
+		ret = this.length > 1 && !guaranteedUnique[ name ] ? jQuery.unique( ret ) : ret;
+
+		if ( this.length > 1 && rparentsprev.test( name ) ) {
+			ret = ret.reverse();
+		}
+
+		return this.pushStack( ret, name, core_slice.call( arguments ).join(",") );
+	};
+});
+
+jQuery.extend({
+	filter: function( expr, elems, not ) {
+		if ( not ) {
+			expr = ":not(" + expr + ")";
+		}
+
+		return elems.length === 1 ?
+			jQuery.find.matchesSelector(elems[0], expr) ? [ elems[0] ] : [] :
+			jQuery.find.matches(expr, elems);
+	},
+
+	dir: function( elem, dir, until ) {
+		var matched = [],
+			cur = elem[ dir ];
+
+		while ( cur && cur.nodeType !== 9 && (until === undefined || cur.nodeType !== 1 || !jQuery( cur ).is( until )) ) {
+			if ( cur.nodeType === 1 ) {
+				matched.push( cur );
+			}
+			cur = cur[dir];
+		}
+		return matched;
+	},
+
+	sibling: function( n, elem ) {
+		var r = [];
+
+		for ( ; n; n = n.nextSibling ) {
+			if ( n.nodeType === 1 && n !== elem ) {
+				r.push( n );
+			}
+		}
+
+		return r;
+	}
+});
+
+// Implement the identical functionality for filter and not
+function winnow( elements, qualifier, keep ) {
+
+	// Can't pass null or undefined to indexOf in Firefox 4
+	// Set to 0 to skip string check
+	qualifier = qualifier || 0;
+
+	if ( jQuery.isFunction( qualifier ) ) {
+		return jQuery.grep(elements, function( elem, i ) {
+			var retVal = !!qualifier.call( elem, i, elem );
+			return retVal === keep;
+		});
+
+	} else if ( qualifier.nodeType ) {
+		return jQuery.grep(elements, function( elem, i ) {
+			return ( elem === qualifier ) === keep;
+		});
+
+	} else if ( typeof qualifier === "string" ) {
+		var filtered = jQuery.grep(elements, function( elem ) {
+			return elem.nodeType === 1;
+		});
+
+		if ( isSimple.test( qualifier ) ) {
+			return jQuery.filter(qualifier, filtered, !keep);
+		} else {
+			qualifier = jQuery.filter( qualifier, filtered );
+		}
+	}
+
+	return jQuery.grep(elements, function( elem, i ) {
+		return ( jQuery.inArray( elem, qualifier ) >= 0 ) === keep;
+	});
+}
+function createSafeFragment( document ) {
+	var list = nodeNames.split( "|" ),
+	safeFrag = document.createDocumentFragment();
+
+	if ( safeFrag.createElement ) {
+		while ( list.length ) {
+			safeFrag.createElement(
+				list.pop()
+			);
+		}
+	}
+	return safeFrag;
+}
+
+var nodeNames = "abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|" +
+		"header|hgroup|mark|meter|nav|output|progress|section|summary|time|video",
+	rinlinejQuery = / jQuery\d+="(?:null|\d+)"/g,
+	rleadingWhitespace = /^\s+/,
+	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi,
+	rtagName = /<([\w:]+)/,
+	rtbody = /<tbody/i,
+	rhtml = /<|&#?\w+;/,
+	rnoInnerhtml = /<(?:script|style|link)/i,
+	rnocache = /<(?:script|object|embed|option|style)/i,
+	rnoshimcache = new RegExp("<(?:" + nodeNames + ")[\\s/>]", "i"),
+	rcheckableType = /^(?:checkbox|radio)$/,
+	// checked="checked" or checked
+	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
+	rscriptType = /\/(java|ecma)script/i,
+	rcleanScript = /^\s*<!(?:\[CDATA\[|\-\-)|[\]\-]{2}>\s*$/g,
+	wrapMap = {
+		option: [ 1, "<select multiple='multiple'>", "</select>" ],
+		legend: [ 1, "<fieldset>", "</fieldset>" ],
+		thead: [ 1, "<table>", "</table>" ],
+		tr: [ 2, "<table><tbody>", "</tbody></table>" ],
+		td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
+		col: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ],
+		area: [ 1, "<map>", "</map>" ],
+		_default: [ 0, "", "" ]
+	},
+	safeFragment = createSafeFragment( document ),
+	fragmentDiv = safeFragment.appendChild( document.createElement("div") );
+
+wrapMap.optgroup = wrapMap.option;
+wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
+wrapMap.th = wrapMap.td;
+
+// IE6-8 can't serialize link, script, style, or any html5 (NoScope) tags,
+// unless wrapped in a div with non-breaking characters in front of it.
+if ( !jQuery.support.htmlSerialize ) {
+	wrapMap._default = [ 1, "X<div>", "</div>" ];
+}
+
+jQuery.fn.extend({
+	text: function( value ) {
+		return jQuery.access( this, function( value ) {
+			return value === undefined ?
+				jQuery.text( this ) :
+				this.empty().append( ( this[0] && this[0].ownerDocument || document ).createTextNode( value ) );
+		}, null, value, arguments.length );
+	},
+
+	wrapAll: function( html ) {
+		if ( jQuery.isFunction( html ) ) {
+			return this.each(function(i) {
+				jQuery(this).wrapAll( html.call(this, i) );
+			});
+		}
+
+		if ( this[0] ) {
+			// The elements to wrap the target around
+			var wrap = jQuery( html, this[0].ownerDocument ).eq(0).clone(true);
+
+			if ( this[0].parentNode ) {
+				wrap.insertBefore( this[0] );
+			}
+
+			wrap.map(function() {
+				var elem = this;
+
+				while ( elem.firstChild && elem.firstChild.nodeType === 1 ) {
+					elem = elem.firstChild;
+				}
+
+				return elem;
+			}).append( this );
+		}
+
+		return this;
+	},
+
+	wrapInner: function( html ) {
+		if ( jQuery.isFunction( html ) ) {
+			return this.each(function(i) {
+				jQuery(this).wrapInner( html.call(this, i) );
+			});
+		}
+
+		return this.each(function() {
+			var self = jQuery( this ),
+				contents = self.contents();
+
+			if ( contents.length ) {
+				contents.wrapAll( html );
+
+			} else {
+				self.append( html );
+			}
+		});
+	},
+
+	wrap: function( html ) {
+		var isFunction = jQuery.isFunction( html );
+
+		return this.each(function(i) {
+			jQuery( this ).wrapAll( isFunction ? html.call(this, i) : html );
+		});
+	},
+
+	unwrap: function() {
+		return this.parent().each(function() {
+			if ( !jQuery.nodeName( this, "body" ) ) {
+				jQuery( this ).replaceWith( this.childNodes );
+			}
+		}).end();
+	},
+
+	append: function() {
+		return this.domManip(arguments, true, function( elem ) {
+			if ( this.nodeType === 1 || this.nodeType === 11 ) {
+				this.appendChild( elem );
+			}
+		});
+	},
+
+	prepend: function() {
+		return this.domManip(arguments, true, function( elem ) {
+			if ( this.nodeType === 1 || this.nodeType === 11 ) {
+				this.insertBefore( elem, this.firstChild );
+			}
+		});
+	},
+
+	before: function() {
+		if ( !isDisconnected( this[0] ) ) {
+			return this.domManip(arguments, false, function( elem ) {
+				this.parentNode.insertBefore( elem, this );
+			});
+		}
+
+		if ( arguments.length ) {
+			var set = jQuery.clean( arguments );
+			return this.pushStack( jQuery.merge( set, this ), "before", this.selector );
+		}
+	},
+
+	after: function() {
+		if ( !isDisconnected( this[0] ) ) {
+			return this.domManip(arguments, false, function( elem ) {
+				this.parentNode.insertBefore( elem, this.nextSibling );
+			});
+		}
+
+		if ( arguments.length ) {
+			var set = jQuery.clean( arguments );
+			return this.pushStack( jQuery.merge( this, set ), "after", this.selector );
+		}
+	},
+
+	// keepData is for internal use only--do not document
+	remove: function( selector, keepData ) {
+		var elem,
+			i = 0;
+
+		for ( ; (elem = this[i]) != null; i++ ) {
+			if ( !selector || jQuery.filter( selector, [ elem ] ).length ) {
+				if ( !keepData && elem.nodeType === 1 ) {
+					jQuery.cleanData( elem.getElementsByTagName("*") );
+					jQuery.cleanData( [ elem ] );
+				}
+
+				if ( elem.parentNode ) {
+					elem.parentNode.removeChild( elem );
+				}
+			}
+		}
+
+		return this;
+	},
+
+	empty: function() {
+		var elem,
+			i = 0;
+
+		for ( ; (elem = this[i]) != null; i++ ) {
+			// Remove element nodes and prevent memory leaks
+			if ( elem.nodeType === 1 ) {
+				jQuery.cleanData( elem.getElementsByTagName("*") );
+			}
+
+			// Remove any remaining nodes
+			while ( elem.firstChild ) {
+				elem.removeChild( elem.firstChild );
+			}
+		}
+
+		return this;
+	},
+
+	clone: function( dataAndEvents, deepDataAndEvents ) {
+		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
+		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;
+
+		return this.map( function () {
+			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
+		});
+	},
+
+	html: function( value ) {
+		return jQuery.access( this, function( value ) {
+			var elem = this[0] || {},
+				i = 0,
+				l = this.length;
+
+			if ( value === undefined ) {
+				return elem.nodeType === 1 ?
+					elem.innerHTML.replace( rinlinejQuery, "" ) :
+					undefined;
+			}
+
+			// See if we can take a shortcut and just use innerHTML
+			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
+				( jQuery.support.htmlSerialize || !rnoshimcache.test( value )  ) &&
+				( jQuery.support.leadingWhitespace || !rleadingWhitespace.test( value ) ) &&
+				!wrapMap[ ( rtagName.exec( value ) || ["", ""] )[1].toLowerCase() ] ) {
+
+				value = value.replace( rxhtmlTag, "<$1></$2>" );
+
+				try {
+					for (; i < l; i++ ) {
+						// Remove element nodes and prevent memory leaks
+						elem = this[i] || {};
+						if ( elem.nodeType === 1 ) {
+							jQuery.cleanData( elem.getElementsByTagName( "*" ) );
+							elem.innerHTML = value;
+						}
+					}
+
+					elem = 0;
+
+				// If using innerHTML throws an exception, use the fallback method
+				} catch(e) {}
+			}
+
+			if ( elem ) {
+				this.empty().append( value );
+			}
+		}, null, value, arguments.length );
+	},
+
+	replaceWith: function( value ) {
+		if ( !isDisconnected( this[0] ) ) {
+			// Make sure that the elements are removed from the DOM before they are inserted
+			// this can help fix replacing a parent with child elements
+			if ( jQuery.isFunction( value ) ) {
+				return this.each(function(i) {
+					var self = jQuery(this), old = self.html();
+					self.replaceWith( value.call( this, i, old ) );
+				});
+			}
+
+			if ( typeof value !== "string" ) {
+				value = jQuery( value ).detach();
+			}
+
+			return this.each(function() {
+				var next = this.nextSibling,
+					parent = this.parentNode;
+
+				jQuery( this ).remove();
+
+				if ( next ) {
+					jQuery(next).before( value );
+				} else {
+					jQuery(parent).append( value );
+				}
+			});
+		}
+
+		return this.length ?
+			this.pushStack( jQuery(jQuery.isFunction(value) ? value() : value), "replaceWith", value ) :
+			this;
+	},
+
+	detach: function( selector ) {
+		return this.remove( selector, true );
+	},
+
+	domManip: function( args, table, callback ) {
+
+		// Flatten any nested arrays
+		args = [].concat.apply( [], args );
+
+		var results, first, fragment, iNoClone,
+			i = 0,
+			value = args[0],
+			scripts = [],
+			l = this.length;
+
+		// We can't cloneNode fragments that contain checked, in WebKit
+		if ( !jQuery.support.checkClone && l > 1 && typeof value === "string" && rchecked.test( value ) ) {
+			return this.each(function() {
+				jQuery(this).domManip( args, table, callback );
+			});
+		}
+
+		if ( jQuery.isFunction(value) ) {
+			return this.each(function(i) {
+				var self = jQuery(this);
+				args[0] = value.call( this, i, table ? self.html() : undefined );
+				self.domManip( args, table, callback );
+			});
+		}
+
+		if ( this[0] ) {
+			results = jQuery.buildFragment( args, this, scripts );
+			fragment = results.fragment;
+			first = fragment.firstChild;
+
+			if ( fragment.childNodes.length === 1 ) {
+				fragment = first;
+			}
+
+			if ( first ) {
+				table = table && jQuery.nodeName( first, "tr" );
+
+				// Use the original fragment for the last item instead of the first because it can end up
+				// being emptied incorrectly in certain situations (#8070).
+				// Fragments from the fragment cache must always be cloned and never used in place.
+				for ( iNoClone = results.cacheable || l - 1; i < l; i++ ) {
+					callback.call(
+						table && jQuery.nodeName( this[i], "table" ) ?
+							findOrAppend( this[i], "tbody" ) :
+							this[i],
+						i === iNoClone ?
+							fragment :
+							jQuery.clone( fragment, true, true )
+					);
+				}
+			}
+
+			// Fix #11809: Avoid leaking memory
+			fragment = first = null;
+
+			if ( scripts.length ) {
+				jQuery.each( scripts, function( i, elem ) {
+					if ( elem.src ) {
+						if ( jQuery.ajax ) {
+							jQuery.ajax({
+								url: elem.src,
+								type: "GET",
+								dataType: "script",
+								async: false,
+								global: false,
+								"throws": true
+							});
+						} else {
+							jQuery.error("no ajax");
+						}
+					} else {
+						jQuery.globalEval( ( elem.text || elem.textContent || elem.innerHTML || "" ).replace( rcleanScript, "" ) );
+					}
+
+					if ( elem.parentNode ) {
+						elem.parentNode.removeChild( elem );
+					}
+				});
+			}
+		}
+
+		return this;
+	}
+});
+
+function findOrAppend( elem, tag ) {
+	return elem.getElementsByTagName( tag )[0] || elem.appendChild( elem.ownerDocument.createElement( tag ) );
+}
+
+function cloneCopyEvent( src, dest ) {
+
+	if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) {
+		return;
+	}
+
+	var type, i, l,
+		oldData = jQuery._data( src ),
+		curData = jQuery._data( dest, oldData ),
+		events = oldData.events;
+
+	if ( events ) {
+		delete curData.handle;
+		curData.events = {};
+
+		for ( type in events ) {
+			for ( i = 0, l = events[ type ].length; i < l; i++ ) {
+				jQuery.event.add( dest, type, events[ type ][ i ] );
+			}
+		}
+	}
+
+	// make the cloned public data object a copy from the original
+	if ( curData.data ) {
+		curData.data = jQuery.extend( {}, curData.data );
+	}
+}
+
+function cloneFixAttributes( src, dest ) {
+	var nodeName;
+
+	// We do not need to do anything for non-Elements
+	if ( dest.nodeType !== 1 ) {
+		return;
+	}
+
+	// clearAttributes removes the attributes, which we don't want,
+	// but also removes the attachEvent events, which we *do* want
+	if ( dest.clearAttributes ) {
+		dest.clearAttributes();
+	}
+
+	// mergeAttributes, in contrast, only merges back on the
+	// original attributes, not the events
+	if ( dest.mergeAttributes ) {
+		dest.mergeAttributes( src );
+	}
+
+	nodeName = dest.nodeName.toLowerCase();
+
+	if ( nodeName === "object" ) {
+		// IE6-10 improperly clones children of object elements using classid.
+		// IE10 throws NoModificationAllowedError if parent is null, #12132.
+		if ( dest.parentNode ) {
+			dest.outerHTML = src.outerHTML;
+		}
+
+		// This path appears unavoidable for IE9. When cloning an object
+		// element in IE9, the outerHTML strategy above is not sufficient.
+		// If the src has innerHTML and the destination does not,
+		// copy the src.innerHTML into the dest.innerHTML. #10324
+		if ( jQuery.support.html5Clone && (src.innerHTML && !jQuery.trim(dest.innerHTML)) ) {
+			dest.innerHTML = src.innerHTML;
+		}
+
+	} else if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
+		// IE6-8 fails to persist the checked state of a cloned checkbox
+		// or radio button. Worse, IE6-7 fail to give the cloned element
+		// a checked appearance if the defaultChecked value isn't also set
+
+		dest.defaultChecked = dest.checked = src.checked;
+
+		// IE6-7 get confused and end up setting the value of a cloned
+		// checkbox/radio button to an empty string instead of "on"
+		if ( dest.value !== src.value ) {
+			dest.value = src.value;
+		}
+
+	// IE6-8 fails to return the selected option to the default selected
+	// state when cloning options
+	} else if ( nodeName === "option" ) {
+		dest.selected = src.defaultSelected;
+
+	// IE6-8 fails to set the defaultValue to the correct value when
+	// cloning other types of input fields
+	} else if ( nodeName === "input" || nodeName === "textarea" ) {
+		dest.defaultValue = src.defaultValue;
+
+	// IE blanks contents when cloning scripts
+	} else if ( nodeName === "script" && dest.text !== src.text ) {
+		dest.text = src.text;
+	}
+
+	// Event data gets referenced instead of copied if the expando
+	// gets copied too
+	dest.removeAttribute( jQuery.expando );
+}
+
+jQuery.buildFragment = function( args, context, scripts ) {
+	var fragment, cacheable, cachehit,
+		first = args[ 0 ];
+
+	// Set context from what may come in as undefined or a jQuery collection or a node
+	// Updated to fix #12266 where accessing context[0] could throw an exception in IE9/10 &
+	// also doubles as fix for #8950 where plain objects caused createDocumentFragment exception
+	context = context || document;
+	context = !context.nodeType && context[0] || context;
+	context = context.ownerDocument || context;
+
+	// Only cache "small" (1/2 KB) HTML strings that are associated with the main document
+	// Cloning options loses the selected state, so don't cache them
+	// IE 6 doesn't like it when you put <object> or <embed> elements in a fragment
+	// Also, WebKit does not clone 'checked' attributes on cloneNode, so don't cache
+	// Lastly, IE6,7,8 will not correctly reuse cached fragments that were created from unknown elems #10501
+	if ( args.length === 1 && typeof first === "string" && first.length < 512 && context === document &&
+		first.charAt(0) === "<" && !rnocache.test( first ) &&
+		(jQuery.support.checkClone || !rchecked.test( first )) &&
+		(jQuery.support.html5Clone || !rnoshimcache.test( first )) ) {
+
+		// Mark cacheable and look for a hit
+		cacheable = true;
+		fragment = jQuery.fragments[ first ];
+		cachehit = fragment !== undefined;
+	}
+
+	if ( !fragment ) {
+		fragment = context.createDocumentFragment();
+		jQuery.clean( args, context, fragment, scripts );
+
+		// Update the cache, but only store false
+		// unless this is a second parsing of the same content
+		if ( cacheable ) {
+			jQuery.fragments[ first ] = cachehit && fragment;
+		}
+	}
+
+	return { fragment: fragment, cacheable: cacheable };
+};
+
+jQuery.fragments = {};
+
+jQuery.each({
+	appendTo: "append",
+	prependTo: "prepend",
+	insertBefore: "before",
+	insertAfter: "after",
+	replaceAll: "replaceWith"
+}, function( name, original ) {
+	jQuery.fn[ name ] = function( selector ) {
+		var elems,
+			i = 0,
+			ret = [],
+			insert = jQuery( selector ),
+			l = insert.length,
+			parent = this.length === 1 && this[0].parentNode;
+
+		if ( (parent == null || parent && parent.nodeType === 11 && parent.childNodes.length === 1) && l === 1 ) {
+			insert[ original ]( this[0] );
+			return this;
+		} else {
+			for ( ; i < l; i++ ) {
+				elems = ( i > 0 ? this.clone(true) : this ).get();
+				jQuery( insert[i] )[ original ]( elems );
+				ret = ret.concat( elems );
+			}
+
+			return this.pushStack( ret, name, insert.selector );
+		}
+	};
+});
+
+function getAll( elem ) {
+	if ( typeof elem.getElementsByTagName !== "undefined" ) {
+		return elem.getElementsByTagName( "*" );
+
+	} else if ( typeof elem.querySelectorAll !== "undefined" ) {
+		return elem.querySelectorAll( "*" );
+
+	} else {
+		return [];
+	}
+}
+
+// Used in clean, fixes the defaultChecked property
+function fixDefaultChecked( elem ) {
+	if ( rcheckableType.test( elem.type ) ) {
+		elem.defaultChecked = elem.checked;
+	}
+}
+
+jQuery.extend({
+	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
+		var srcElements,
+			destElements,
+			i,
+			clone;
+
+		if ( jQuery.support.html5Clone || jQuery.isXMLDoc(elem) || !rnoshimcache.test( "<" + elem.nodeName + ">" ) ) {
+			clone = elem.cloneNode( true );
+
+		// IE<=8 does not properly clone detached, unknown element nodes
+		} else {
+			fragmentDiv.innerHTML = elem.outerHTML;
+			fragmentDiv.removeChild( clone = fragmentDiv.firstChild );
+		}
+
+		if ( (!jQuery.support.noCloneEvent || !jQuery.support.noCloneChecked) &&
+				(elem.nodeType === 1 || elem.nodeType === 11) && !jQuery.isXMLDoc(elem) ) {
+			// IE copies events bound via attachEvent when using cloneNode.
+			// Calling detachEvent on the clone will also remove the events
+			// from the original. In order to get around this, we use some
+			// proprietary methods to clear the events. Thanks to MooTools
+			// guys for this hotness.
+
+			cloneFixAttributes( elem, clone );
+
+			// Using Sizzle here is crazy slow, so we use getElementsByTagName instead
+			srcElements = getAll( elem );
+			destElements = getAll( clone );
+
+			// Weird iteration because IE will replace the length property
+			// with an element if you are cloning the body and one of the
+			// elements on the page has a name or id of "length"
+			for ( i = 0; srcElements[i]; ++i ) {
+				// Ensure that the destination node is not null; Fixes #9587
+				if ( destElements[i] ) {
+					cloneFixAttributes( srcElements[i], destElements[i] );
+				}
+			}
+		}
+
+		// Copy the events from the original to the clone
+		if ( dataAndEvents ) {
+			cloneCopyEvent( elem, clone );
+
+			if ( deepDataAndEvents ) {
+				srcElements = getAll( elem );
+				destElements = getAll( clone );
+
+				for ( i = 0; srcElements[i]; ++i ) {
+					cloneCopyEvent( srcElements[i], destElements[i] );
+				}
+			}
+		}
+
+		srcElements = destElements = null;
+
+		// Return the cloned set
+		return clone;
+	},
+
+	clean: function( elems, context, fragment, scripts ) {
+		var i, j, elem, tag, wrap, depth, div, hasBody, tbody, len, handleScript, jsTags,
+			safe = context === document && safeFragment,
+			ret = [];
+
+		// Ensure that context is a document
+		if ( !context || typeof context.createDocumentFragment === "undefined" ) {
+			context = document;
+		}
+
+		// Use the already-created safe fragment if context permits
+		for ( i = 0; (elem = elems[i]) != null; i++ ) {
+			if ( typeof elem === "number" ) {
+				elem += "";
+			}
+
+			if ( !elem ) {
+				continue;
+			}
+
+			// Convert html string into DOM nodes
+			if ( typeof elem === "string" ) {
+				if ( !rhtml.test( elem ) ) {
+					elem = context.createTextNode( elem );
+				} else {
+					// Ensure a safe container in which to render the html
+					safe = safe || createSafeFragment( context );
+					div = context.createElement("div");
+					safe.appendChild( div );
+
+					// Fix "XHTML"-style tags in all browsers
+					elem = elem.replace(rxhtmlTag, "<$1></$2>");
+
+					// Go to html and back, then peel off extra wrappers
+					tag = ( rtagName.exec( elem ) || ["", ""] )[1].toLowerCase();
+					wrap = wrapMap[ tag ] || wrapMap._default;
+					depth = wrap[0];
+					div.innerHTML = wrap[1] + elem + wrap[2];
+
+					// Move to the right depth
+					while ( depth-- ) {
+						div = div.lastChild;
+					}
+
+					// Remove IE's autoinserted <tbody> from table fragments
+					if ( !jQuery.support.tbody ) {
+
+						// String was a <table>, *may* have spurious <tbody>
+						hasBody = rtbody.test(elem);
+							tbody = tag === "table" && !hasBody ?
+								div.firstChild && div.firstChild.childNodes :
+
+								// String was a bare <thead> or <tfoot>
+								wrap[1] === "<table>" && !hasBody ?
+									div.childNodes :
+									[];
+
+						for ( j = tbody.length - 1; j >= 0 ; --j ) {
+							if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length ) {
+								tbody[ j ].parentNode.removeChild( tbody[ j ] );
+							}
+						}
+					}
+
+					// IE completely kills leading whitespace when innerHTML is used
+					if ( !jQuery.support.leadingWhitespace && rleadingWhitespace.test( elem ) ) {
+						div.insertBefore( context.createTextNode( rleadingWhitespace.exec(elem)[0] ), div.firstChild );
+					}
+
+					elem = div.childNodes;
+
+					// Take out of fragment container (we need a fresh div each time)
+					div.parentNode.removeChild( div );
+				}
+			}
+
+			if ( elem.nodeType ) {
+				ret.push( elem );
+			} else {
+				jQuery.merge( ret, elem );
+			}
+		}
+
+		// Fix #11356: Clear elements from safeFragment
+		if ( div ) {
+			elem = div = safe = null;
+		}
+
+		// Reset defaultChecked for any radios and checkboxes
+		// about to be appended to the DOM in IE 6/7 (#8060)
+		if ( !jQuery.support.appendChecked ) {
+			for ( i = 0; (elem = ret[i]) != null; i++ ) {
+				if ( jQuery.nodeName( elem, "input" ) ) {
+					fixDefaultChecked( elem );
+				} else if ( typeof elem.getElementsByTagName !== "undefined" ) {
+					jQuery.grep( elem.getElementsByTagName("input"), fixDefaultChecked );
+				}
+			}
+		}
+
+		// Append elements to a provided document fragment
+		if ( fragment ) {
+			// Special handling of each script element
+			handleScript = function( elem ) {
+				// Check if we consider it executable
+				if ( !elem.type || rscriptType.test( elem.type ) ) {
+					// Detach the script and store it in the scripts array (if provided) or the fragment
+					// Return truthy to indicate that it has been handled
+					return scripts ?
+						scripts.push( elem.parentNode ? elem.parentNode.removeChild( elem ) : elem ) :
+						fragment.appendChild( elem );
+				}
+			};
+
+			for ( i = 0; (elem = ret[i]) != null; i++ ) {
+				// Check if we're done after handling an executable script
+				if ( !( jQuery.nodeName( elem, "script" ) && handleScript( elem ) ) ) {
+					// Append to fragment and handle embedded scripts
+					fragment.appendChild( elem );
+					if ( typeof elem.getElementsByTagName !== "undefined" ) {
+						// handleScript alters the DOM, so use jQuery.merge to ensure snapshot iteration
+						jsTags = jQuery.grep( jQuery.merge( [], elem.getElementsByTagName("script") ), handleScript );
+
+						// Splice the scripts into ret after their former ancestor and advance our index beyond them
+						ret.splice.apply( ret, [i + 1, 0].concat( jsTags ) );
+						i += jsTags.length;
+					}
+				}
+			}
+		}
+
+		return ret;
+	},
+
+	cleanData: function( elems, /* internal */ acceptData ) {
+		var data, id, elem, type,
+			i = 0,
+			internalKey = jQuery.expando,
+			cache = jQuery.cache,
+			deleteExpando = jQuery.support.deleteExpando,
+			special = jQuery.event.special;
+
+		for ( ; (elem = elems[i]) != null; i++ ) {
+
+			if ( acceptData || jQuery.acceptData( elem ) ) {
+
+				id = elem[ internalKey ];
+				data = id && cache[ id ];
+
+				if ( data ) {
+					if ( data.events ) {
+						for ( type in data.events ) {
+							if ( special[ type ] ) {
+								jQuery.event.remove( elem, type );
+
+							// This is a shortcut to avoid jQuery.event.remove's overhead
+							} else {
+								jQuery.removeEvent( elem, type, data.handle );
+							}
+						}
+					}
+
+					// Remove cache only if it was not already removed by jQuery.event.remove
+					if ( cache[ id ] ) {
+
+						delete cache[ id ];
+
+						// IE does not allow us to delete expando properties from nodes,
+						// nor does it have a removeAttribute function on Document nodes;
+						// we must handle all of these cases
+						if ( deleteExpando ) {
+							delete elem[ internalKey ];
+
+						} else if ( elem.removeAttribute ) {
+							elem.removeAttribute( internalKey );
+
+						} else {
+							elem[ internalKey ] = null;
+						}
+
+						jQuery.deletedIds.push( id );
+					}
+				}
+			}
+		}
+	}
+});
+// Limit scope pollution from any deprecated API
+(function() {
+
+var matched, browser;
+
+// Use of jQuery.browser is frowned upon.
+// More details: http://api.jquery.com/jQuery.browser
+// jQuery.uaMatch maintained for back-compat
+jQuery.uaMatch = function( ua ) {
+	ua = ua.toLowerCase();
+
+	var match = /(chrome)[ \/]([\w.]+)/.exec( ua ) ||
+		/(webkit)[ \/]([\w.]+)/.exec( ua ) ||
+		/(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
+		/(msie) ([\w.]+)/.exec( ua ) ||
+		ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
+		[];
+
+	return {
+		browser: match[ 1 ] || "",
+		version: match[ 2 ] || "0"
+	};
+};
+
+matched = jQuery.uaMatch( navigator.userAgent );
+browser = {};
+
+if ( matched.browser ) {
+	browser[ matched.browser ] = true;
+	browser.version = matched.version;
+}
+
+// Chrome is Webkit, but Webkit is also Safari.
+if ( browser.chrome ) {
+	browser.webkit = true;
+} else if ( browser.webkit ) {
+	browser.safari = true;
+}
+
+jQuery.browser = browser;
+
+jQuery.sub = function() {
+	function jQuerySub( selector, context ) {
+		return new jQuerySub.fn.init( selector, context );
+	}
+	jQuery.extend( true, jQuerySub, this );
+	jQuerySub.superclass = this;
+	jQuerySub.fn = jQuerySub.prototype = this();
+	jQuerySub.fn.constructor = jQuerySub;
+	jQuerySub.sub = this.sub;
+	jQuerySub.fn.init = function init( selector, context ) {
+		if ( context && context instanceof jQuery && !(context instanceof jQuerySub) ) {
+			context = jQuerySub( context );
+		}
+
+		return jQuery.fn.init.call( this, selector, context, rootjQuerySub );
+	};
+	jQuerySub.fn.init.prototype = jQuerySub.fn;
+	var rootjQuerySub = jQuerySub(document);
+	return jQuerySub;
+};
+
+})();
+var curCSS, iframe, iframeDoc,
+	ralpha = /alpha\([^)]*\)/i,
+	ropacity = /opacity=([^)]*)/,
+	rposition = /^(top|right|bottom|left)$/,
+	// swappable if display is none or starts with table except "table", "table-cell", or "table-caption"
+	// see here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
+	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
+	rmargin = /^margin/,
+	rnumsplit = new RegExp( "^(" + core_pnum + ")(.*)$", "i" ),
+	rnumnonpx = new RegExp( "^(" + core_pnum + ")(?!px)[a-z%]+$", "i" ),
+	rrelNum = new RegExp( "^([-+])=(" + core_pnum + ")", "i" ),
+	elemdisplay = { BODY: "block" },
+
+	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
+	cssNormalTransform = {
+		letterSpacing: 0,
+		fontWeight: 400
+	},
+
+	cssExpand = [ "Top", "Right", "Bottom", "Left" ],
+	cssPrefixes = [ "Webkit", "O", "Moz", "ms" ],
+
+	eventsToggle = jQuery.fn.toggle;
+
+// return a css property mapped to a potentially vendor prefixed property
+function vendorPropName( style, name ) {
+
+	// shortcut for names that are not vendor prefixed
+	if ( name in style ) {
+		return name;
+	}
+
+	// check for vendor prefixed names
+	var capName = name.charAt(0).toUpperCase() + name.slice(1),
+		origName = name,
+		i = cssPrefixes.length;
+
+	while ( i-- ) {
+		name = cssPrefixes[ i ] + capName;
+		if ( name in style ) {
+			return name;
+		}
+	}
+
+	return origName;
+}
+
+function isHidden( elem, el ) {
+	elem = el || elem;
+	return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem );
+}
+
+function showHide( elements, show ) {
+	var elem, display,
+		values = [],
+		index = 0,
+		length = elements.length;
+
+	for ( ; index < length; index++ ) {
+		elem = elements[ index ];
+		if ( !elem.style ) {
+			continue;
+		}
+		values[ index ] = jQuery._data( elem, "olddisplay" );
+		if ( show ) {
+			// Reset the inline display of this element to learn if it is
+			// being hidden by cascaded rules or not
+			if ( !values[ index ] && elem.style.display === "none" ) {
+				elem.style.display = "";
+			}
+
+			// Set elements which have been overridden with display: none
+			// in a stylesheet to whatever the default browser style is
+			// for such an element
+			if ( elem.style.display === "" && isHidden( elem ) ) {
+				values[ index ] = jQuery._data( elem, "olddisplay", css_defaultDisplay(elem.nodeName) );
+			}
+		} else {
+			display = curCSS( elem, "display" );
+
+			if ( !values[ index ] && display !== "none" ) {
+				jQuery._data( elem, "olddisplay", display );
+			}
+		}
+	}
+
+	// Set the display of most of the elements in a second loop
+	// to avoid the constant reflow
+	for ( index = 0; index < length; index++ ) {
+		elem = elements[ index ];
+		if ( !elem.style ) {
+			continue;
+		}
+		if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
+			elem.style.display = show ? values[ index ] || "" : "none";
+		}
+	}
+
+	return elements;
+}
+
+jQuery.fn.extend({
+	css: function( name, value ) {
+		return jQuery.access( this, function( elem, name, value ) {
+			return value !== undefined ?
+				jQuery.style( elem, name, value ) :
+				jQuery.css( elem, name );
+		}, name, value, arguments.length > 1 );
+	},
+	show: function() {
+		return showHide( this, true );
+	},
+	hide: function() {
+		return showHide( this );
+	},
+	toggle: function( state, fn2 ) {
+		var bool = typeof state === "boolean";
+
+		if ( jQuery.isFunction( state ) && jQuery.isFunction( fn2 ) ) {
+			return eventsToggle.apply( this, arguments );
+		}
+
+		return this.each(function() {
+			if ( bool ? state : isHidden( this ) ) {
+				jQuery( this ).show();
+			} else {
+				jQuery( this ).hide();
+			}
+		});
+	}
+});
+
+jQuery.extend({
+	// Add in style property hooks for overriding the default
+	// behavior of getting and setting a style property
+	cssHooks: {
+		opacity: {
+			get: function( elem, computed ) {
+				if ( computed ) {
+					// We should always get a number back from opacity
+					var ret = curCSS( elem, "opacity" );
+					return ret === "" ? "1" : ret;
+
+				}
+			}
+		}
+	},
+
+	// Exclude the following css properties to add px
+	cssNumber: {
+		"fillOpacity": true,
+		"fontWeight": true,
+		"lineHeight": true,
+		"opacity": true,
+		"orphans": true,
+		"widows": true,
+		"zIndex": true,
+		"zoom": true
+	},
+
+	// Add in properties whose names you wish to fix before
+	// setting or getting the value
+	cssProps: {
+		// normalize float css property
+		"float": jQuery.support.cssFloat ? "cssFloat" : "styleFloat"
+	},
+
+	// Get and set the style property on a DOM Node
+	style: function( elem, name, value, extra ) {
+		// Don't set styles on text and comment nodes
+		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
+			return;
+		}
+
+		// Make sure that we're working with the right name
+		var ret, type, hooks,
+			origName = jQuery.camelCase( name ),
+			style = elem.style;
+
+		name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( style, origName ) );
+
+		// gets hook for the prefixed version
+		// followed by the unprefixed version
+		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+		// Check if we're setting a value
+		if ( value !== undefined ) {
+			type = typeof value;
+
+			// convert relative number strings (+= or -=) to relative numbers. #7345
+			if ( type === "string" && (ret = rrelNum.exec( value )) ) {
+				value = ( ret[1] + 1 ) * ret[2] + parseFloat( jQuery.css( elem, name ) );
+				// Fixes bug #9237
+				type = "number";
+			}
+
+			// Make sure that NaN and null values aren't set. See: #7116
+			if ( value == null || type === "number" && isNaN( value ) ) {
+				return;
+			}
+
+			// If a number was passed in, add 'px' to the (except for certain CSS properties)
+			if ( type === "number" && !jQuery.cssNumber[ origName ] ) {
+				value += "px";
+			}
+
+			// If a hook was provided, use that value, otherwise just set the specified value
+			if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value, extra )) !== undefined ) {
+				// Wrapped to prevent IE from throwing errors when 'invalid' values are provided
+				// Fixes bug #5509
+				try {
+					style[ name ] = value;
+				} catch(e) {}
+			}
+
+		} else {
+			// If a hook was provided get the non-computed value from there
+			if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) {
+				return ret;
+			}
+
+			// Otherwise just get the value from the style object
+			return style[ name ];
+		}
+	},
+
+	css: function( elem, name, numeric, extra ) {
+		var val, num, hooks,
+			origName = jQuery.camelCase( name );
+
+		// Make sure that we're working with the right name
+		name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( elem.style, origName ) );
+
+		// gets hook for the prefixed version
+		// followed by the unprefixed version
+		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+		// If a hook was provided get the computed value from there
+		if ( hooks && "get" in hooks ) {
+			val = hooks.get( elem, true, extra );
+		}
+
+		// Otherwise, if a way to get the computed value exists, use that
+		if ( val === undefined ) {
+			val = curCSS( elem, name );
+		}
+
+		//convert "normal" to computed value
+		if ( val === "normal" && name in cssNormalTransform ) {
+			val = cssNormalTransform[ name ];
+		}
+
+		// Return, converting to number if forced or a qualifier was provided and val looks numeric
+		if ( numeric || extra !== undefined ) {
+			num = parseFloat( val );
+			return numeric || jQuery.isNumeric( num ) ? num || 0 : val;
+		}
+		return val;
+	},
+
+	// A method for quickly swapping in/out CSS properties to get correct calculations
+	swap: function( elem, options, callback ) {
+		var ret, name,
+			old = {};
+
+		// Remember the old values, and insert the new ones
+		for ( name in options ) {
+			old[ name ] = elem.style[ name ];
+			elem.style[ name ] = options[ name ];
+		}
+
+		ret = callback.call( elem );
+
+		// Revert the old values
+		for ( name in options ) {
+			elem.style[ name ] = old[ name ];
+		}
+
+		return ret;
+	}
+});
+
+// NOTE: To any future maintainer, we've window.getComputedStyle
+// because jsdom on node.js will break without it.
+if ( window.getComputedStyle ) {
+	curCSS = function( elem, name ) {
+		var ret, width, minWidth, maxWidth,
+			computed = window.getComputedStyle( elem, null ),
+			style = elem.style;
+
+		if ( computed ) {
+
+			// getPropertyValue is only needed for .css('filter') in IE9, see #12537
+			ret = computed.getPropertyValue( name ) || computed[ name ];
+
+			if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
+				ret = jQuery.style( elem, name );
+			}
+
+			// A tribute to the "awesome hack by Dean Edwards"
+			// Chrome < 17 and Safari 5.0 uses "computed value" instead of "used value" for margin-right
+			// Safari 5.1.7 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels
+			// this is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values
+			if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) {
+				width = style.width;
+				minWidth = style.minWidth;
+				maxWidth = style.maxWidth;
+
+				style.minWidth = style.maxWidth = style.width = ret;
+				ret = computed.width;
+
+				style.width = width;
+				style.minWidth = minWidth;
+				style.maxWidth = maxWidth;
+			}
+		}
+
+		return ret;
+	};
+} else if ( document.documentElement.currentStyle ) {
+	curCSS = function( elem, name ) {
+		var left, rsLeft,
+			ret = elem.currentStyle && elem.currentStyle[ name ],
+			style = elem.style;
+
+		// Avoid setting ret to empty string here
+		// so we don't default to auto
+		if ( ret == null && style && style[ name ] ) {
+			ret = style[ name ];
+		}
+
+		// From the awesome hack by Dean Edwards
+		// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
+
+		// If we're not dealing with a regular pixel number
+		// but a number that has a weird ending, we need to convert it to pixels
+		// but not position css attributes, as those are proportional to the parent element instead
+		// and we can't measure the parent instead because it might trigger a "stacking dolls" problem
+		if ( rnumnonpx.test( ret ) && !rposition.test( name ) ) {
+
+			// Remember the original values
+			left = style.left;
+			rsLeft = elem.runtimeStyle && elem.runtimeStyle.left;
+
+			// Put in the new values to get a computed value out
+			if ( rsLeft ) {
+				elem.runtimeStyle.left = elem.currentStyle.left;
+			}
+			style.left = name === "fontSize" ? "1em" : ret;
+			ret = style.pixelLeft + "px";
+
+			// Revert the changed values
+			style.left = left;
+			if ( rsLeft ) {
+				elem.runtimeStyle.left = rsLeft;
+			}
+		}
+
+		return ret === "" ? "auto" : ret;
+	};
+}
+
+function setPositiveNumber( elem, value, subtract ) {
+	var matches = rnumsplit.exec( value );
+	return matches ?
+			Math.max( 0, matches[ 1 ] - ( subtract || 0 ) ) + ( matches[ 2 ] || "px" ) :
+			value;
+}
+
+function augmentWidthOrHeight( elem, name, extra, isBorderBox ) {
+	var i = extra === ( isBorderBox ? "border" : "content" ) ?
+		// If we already have the right measurement, avoid augmentation
+		4 :
+		// Otherwise initialize for horizontal or vertical properties
+		name === "width" ? 1 : 0,
+
+		val = 0;
+
+	for ( ; i < 4; i += 2 ) {
+		// both box models exclude margin, so add it if we want it
+		if ( extra === "margin" ) {
+			// we use jQuery.css instead of curCSS here
+			// because of the reliableMarginRight CSS hook!
+			val += jQuery.css( elem, extra + cssExpand[ i ], true );
+		}
+
+		// From this point on we use curCSS for maximum performance (relevant in animations)
+		if ( isBorderBox ) {
+			// border-box includes padding, so remove it if we want content
+			if ( extra === "content" ) {
+				val -= parseFloat( curCSS( elem, "padding" + cssExpand[ i ] ) ) || 0;
+			}
+
+			// at this point, extra isn't border nor margin, so remove border
+			if ( extra !== "margin" ) {
+				val -= parseFloat( curCSS( elem, "border" + cssExpand[ i ] + "Width" ) ) || 0;
+			}
+		} else {
+			// at this point, extra isn't content, so add padding
+			val += parseFloat( curCSS( elem, "padding" + cssExpand[ i ] ) ) || 0;
+
+			// at this point, extra isn't content nor padding, so add border
+			if ( extra !== "padding" ) {
+				val += parseFloat( curCSS( elem, "border" + cssExpand[ i ] + "Width" ) ) || 0;
+			}
+		}
+	}
+
+	return val;
+}
+
+function getWidthOrHeight( elem, name, extra ) {
+
+	// Start with offset property, which is equivalent to the border-box value
+	var val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
+		valueIsBorderBox = true,
+		isBorderBox = jQuery.support.boxSizing && jQuery.css( elem, "boxSizing" ) === "border-box";
+
+	// some non-html elements return undefined for offsetWidth, so check for null/undefined
+	// svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285
+	// MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668
+	if ( val <= 0 || val == null ) {
+		// Fall back to computed then uncomputed css if necessary
+		val = curCSS( elem, name );
+		if ( val < 0 || val == null ) {
+			val = elem.style[ name ];
+		}
+
+		// Computed unit is not pixels. Stop here and return.
+		if ( rnumnonpx.test(val) ) {
+			return val;
+		}
+
+		// we need the check for style in case a browser which returns unreliable values
+		// for getComputedStyle silently falls back to the reliable elem.style
+		valueIsBorderBox = isBorderBox && ( jQuery.support.boxSizingReliable || val === elem.style[ name ] );
+
+		// Normalize "", auto, and prepare for extra
+		val = parseFloat( val ) || 0;
+	}
+
+	// use the active box-sizing model to add/subtract irrelevant styles
+	return ( val +
+		augmentWidthOrHeight(
+			elem,
+			name,
+			extra || ( isBorderBox ? "border" : "content" ),
+			valueIsBorderBox
+		)
+	) + "px";
+}
+
+
+// Try to determine the default display value of an element
+function css_defaultDisplay( nodeName ) {
+	if ( elemdisplay[ nodeName ] ) {
+		return elemdisplay[ nodeName ];
+	}
+
+	var elem = jQuery( "<" + nodeName + ">" ).appendTo( document.body ),
+		display = elem.css("display");
+	elem.remove();
+
+	// If the simple way fails,
+	// get element's real default display by attaching it to a temp iframe
+	if ( display === "none" || display === "" ) {
+		// Use the already-created iframe if possible
+		iframe = document.body.appendChild(
+			iframe || jQuery.extend( document.createElement("iframe"), {
+				frameBorder: 0,
+				width: 0,
+				height: 0
+			})
+		);
+
+		// Create a cacheable copy of the iframe document on first call.
+		// IE and Opera will allow us to reuse the iframeDoc without re-writing the fake HTML
+		// document to it; WebKit & Firefox won't allow reusing the iframe document.
+		if ( !iframeDoc || !iframe.createElement ) {
+			iframeDoc = ( iframe.contentWindow || iframe.contentDocument ).document;
+			iframeDoc.write("<!doctype html><html><body>");
+			iframeDoc.close();
+		}
+
+		elem = iframeDoc.body.appendChild( iframeDoc.createElement(nodeName) );
+
+		display = curCSS( elem, "display" );
+		document.body.removeChild( iframe );
+	}
+
+	// Store the correct default display
+	elemdisplay[ nodeName ] = display;
+
+	return display;
+}
+
+jQuery.each([ "height", "width" ], function( i, name ) {
+	jQuery.cssHooks[ name ] = {
+		get: function( elem, computed, extra ) {
+			if ( computed ) {
+				// certain elements can have dimension info if we invisibly show them
+				// however, it must have a current display style that would benefit from this
+				if ( elem.offsetWidth === 0 && rdisplayswap.test( curCSS( elem, "display" ) ) ) {
+					return jQuery.swap( elem, cssShow, function() {
+						return getWidthOrHeight( elem, name, extra );
+					});
+				} else {
+					return getWidthOrHeight( elem, name, extra );
+				}
+			}
+		},
+
+		set: function( elem, value, extra ) {
+			return setPositiveNumber( elem, value, extra ?
+				augmentWidthOrHeight(
+					elem,
+					name,
+					extra,
+					jQuery.support.boxSizing && jQuery.css( elem, "boxSizing" ) === "border-box"
+				) : 0
+			);
+		}
+	};
+});
+
+if ( !jQuery.support.opacity ) {
+	jQuery.cssHooks.opacity = {
+		get: function( elem, computed ) {
+			// IE uses filters for opacity
+			return ropacity.test( (computed && elem.currentStyle ? elem.currentStyle.filter : elem.style.filter) || "" ) ?
+				( 0.01 * parseFloat( RegExp.$1 ) ) + "" :
+				computed ? "1" : "";
+		},
+
+		set: function( elem, value ) {
+			var style = elem.style,
+				currentStyle = elem.currentStyle,
+				opacity = jQuery.isNumeric( value ) ? "alpha(opacity=" + value * 100 + ")" : "",
+				filter = currentStyle && currentStyle.filter || style.filter || "";
+
+			// IE has trouble with opacity if it does not have layout
+			// Force it by setting the zoom level
+			style.zoom = 1;
+
+			// if setting opacity to 1, and no other filters exist - attempt to remove filter attribute #6652
+			if ( value >= 1 && jQuery.trim( filter.replace( ralpha, "" ) ) === "" &&
+				style.removeAttribute ) {
+
+				// Setting style.filter to null, "" & " " still leave "filter:" in the cssText
+				// if "filter:" is present at all, clearType is disabled, we want to avoid this
+				// style.removeAttribute is IE Only, but so apparently is this code path...
+				style.removeAttribute( "filter" );
+
+				// if there there is no filter style applied in a css rule, we are done
+				if ( currentStyle && !currentStyle.filter ) {
+					return;
+				}
+			}
+
+			// otherwise, set new filter values
+			style.filter = ralpha.test( filter ) ?
+				filter.replace( ralpha, opacity ) :
+				filter + " " + opacity;
+		}
+	};
+}
+
+// These hooks cannot be added until DOM ready because the support test
+// for it is not run until after DOM ready
+jQuery(function() {
+	if ( !jQuery.support.reliableMarginRight ) {
+		jQuery.cssHooks.marginRight = {
+			get: function( elem, computed ) {
+				// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
+				// Work around by temporarily setting element display to inline-block
+				return jQuery.swap( elem, { "display": "inline-block" }, function() {
+					if ( computed ) {
+						return curCSS( elem, "marginRight" );
+					}
+				});
+			}
+		};
+	}
+
+	// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
+	// getComputedStyle returns percent when specified for top/left/bottom/right
+	// rather than make the css module depend on the offset module, we just check for it here
+	if ( !jQuery.support.pixelPosition && jQuery.fn.position ) {
+		jQuery.each( [ "top", "left" ], function( i, prop ) {
+			jQuery.cssHooks[ prop ] = {
+				get: function( elem, computed ) {
+					if ( computed ) {
+						var ret = curCSS( elem, prop );
+						// if curCSS returns percentage, fallback to offset
+						return rnumnonpx.test( ret ) ? jQuery( elem ).position()[ prop ] + "px" : ret;
+					}
+				}
+			};
+		});
+	}
+
+});
+
+if ( jQuery.expr && jQuery.expr.filters ) {
+	jQuery.expr.filters.hidden = function( elem ) {
+		return ( elem.offsetWidth === 0 && elem.offsetHeight === 0 ) || (!jQuery.support.reliableHiddenOffsets && ((elem.style && elem.style.display) || curCSS( elem, "display" )) === "none");
+	};
+
+	jQuery.expr.filters.visible = function( elem ) {
+		return !jQuery.expr.filters.hidden( elem );
+	};
+}
+
+// These hooks are used by animate to expand properties
+jQuery.each({
+	margin: "",
+	padding: "",
+	border: "Width"
+}, function( prefix, suffix ) {
+	jQuery.cssHooks[ prefix + suffix ] = {
+		expand: function( value ) {
+			var i,
+
+				// assumes a single number if not a string
+				parts = typeof value === "string" ? value.split(" ") : [ value ],
+				expanded = {};
+
+			for ( i = 0; i < 4; i++ ) {
+				expanded[ prefix + cssExpand[ i ] + suffix ] =
+					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
+			}
+
+			return expanded;
+		}
+	};
+
+	if ( !rmargin.test( prefix ) ) {
+		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
+	}
+});
+var r20 = /%20/g,
+	rbracket = /\[\]$/,
+	rCRLF = /\r?\n/g,
+	rinput = /^(?:color|date|datetime|datetime-local|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i,
+	rselectTextarea = /^(?:select|textarea)/i;
+
+jQuery.fn.extend({
+	serialize: function() {
+		return jQuery.param( this.serializeArray() );
+	},
+	serializeArray: function() {
+		return this.map(function(){
+			return this.elements ? jQuery.makeArray( this.elements ) : this;
+		})
+		.filter(function(){
+			return this.name && !this.disabled &&
+				( this.checked || rselectTextarea.test( this.nodeName ) ||
+					rinput.test( this.type ) );
+		})
+		.map(function( i, elem ){
+			var val = jQuery( this ).val();
+
+			return val == null ?
+				null :
+				jQuery.isArray( val ) ?
+					jQuery.map( val, function( val, i ){
+						return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+					}) :
+					{ name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+		}).get();
+	}
+});
+
+//Serialize an array of form elements or a set of
+//key/values into a query string
+jQuery.param = function( a, traditional ) {
+	var prefix,
+		s = [],
+		add = function( key, value ) {
+			// If value is a function, invoke it and return its value
+			value = jQuery.isFunction( value ) ? value() : ( value == null ? "" : value );
+			s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value );
+		};
+
+	// Set traditional to true for jQuery <= 1.3.2 behavior.
+	if ( traditional === undefined ) {
+		traditional = jQuery.ajaxSettings && jQuery.ajaxSettings.traditional;
+	}
+
+	// If an array was passed in, assume that it is an array of form elements.
+	if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
+		// Serialize the form elements
+		jQuery.each( a, function() {
+			add( this.name, this.value );
+		});
+
+	} else {
+		// If traditional, encode the "old" way (the way 1.3.2 or older
+		// did it), otherwise encode params recursively.
+		for ( prefix in a ) {
+			buildParams( prefix, a[ prefix ], traditional, add );
+		}
+	}
+
+	// Return the resulting serialization
+	return s.join( "&" ).replace( r20, "+" );
+};
+
+function buildParams( prefix, obj, traditional, add ) {
+	var name;
+
+	if ( jQuery.isArray( obj ) ) {
+		// Serialize array item.
+		jQuery.each( obj, function( i, v ) {
+			if ( traditional || rbracket.test( prefix ) ) {
+				// Treat each array item as a scalar.
+				add( prefix, v );
+
+			} else {
+				// If array item is non-scalar (array or object), encode its
+				// numeric index to resolve deserialization ambiguity issues.
+				// Note that rack (as of 1.0.0) can't currently deserialize
+				// nested arrays properly, and attempting to do so may cause
+				// a server error. Possible fixes are to modify rack's
+				// deserialization algorithm or to provide an option or flag
+				// to force array serialization to be shallow.
+				buildParams( prefix + "[" + ( typeof v === "object" ? i : "" ) + "]", v, traditional, add );
+			}
+		});
+
+	} else if ( !traditional && jQuery.type( obj ) === "object" ) {
+		// Serialize object item.
+		for ( name in obj ) {
+			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
+		}
+
+	} else {
+		// Serialize scalar item.
+		add( prefix, obj );
+	}
+}
+var
+	// Document location
+	ajaxLocParts,
+	ajaxLocation,
+
+	rhash = /#.*$/,
+	rheaders = /^(.*?):[ \t]*([^\r\n]*)\r?$/mg, // IE leaves an \r character at EOL
+	// #7653, #8125, #8152: local protocol detection
+	rlocalProtocol = /^(?:about|app|app\-storage|.+\-extension|file|res|widget):$/,
+	rnoContent = /^(?:GET|HEAD)$/,
+	rprotocol = /^\/\//,
+	rquery = /\?/,
+	rscript = /<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,
+	rts = /([?&])_=[^&]*/,
+	rurl = /^([\w\+\.\-]+:)(?:\/\/([^\/?#:]*)(?::(\d+)|)|)/,
+
+	// Keep a copy of the old load method
+	_load = jQuery.fn.load,
+
+	/* Prefilters
+	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
+	 * 2) These are called:
+	 *    - BEFORE asking for a transport
+	 *    - AFTER param serialization (s.data is a string if s.processData is true)
+	 * 3) key is the dataType
+	 * 4) the catchall symbol "*" can be used
+	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
+	 */
+	prefilters = {},
+
+	/* Transports bindings
+	 * 1) key is the dataType
+	 * 2) the catchall symbol "*" can be used
+	 * 3) selection will start with transport dataType and THEN go to "*" if needed
+	 */
+	transports = {},
+
+	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
+	allTypes = ["*/"] + ["*"];
+
+// #8138, IE may throw an exception when accessing
+// a field from window.location if document.domain has been set
+try {
+	ajaxLocation = location.href;
+} catch( e ) {
+	// Use the href attribute of an A element
+	// since IE will modify it given document.location
+	ajaxLocation = document.createElement( "a" );
+	ajaxLocation.href = "";
+	ajaxLocation = ajaxLocation.href;
+}
+
+// Segment location into parts
+ajaxLocParts = rurl.exec( ajaxLocation.toLowerCase() ) || [];
+
+// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
+function addToPrefiltersOrTransports( structure ) {
+
+	// dataTypeExpression is optional and defaults to "*"
+	return function( dataTypeExpression, func ) {
+
+		if ( typeof dataTypeExpression !== "string" ) {
+			func = dataTypeExpression;
+			dataTypeExpression = "*";
+		}
+
+		var dataType, list, placeBefore,
+			dataTypes = dataTypeExpression.toLowerCase().split( core_rspace ),
+			i = 0,
+			length = dataTypes.length;
+
+		if ( jQuery.isFunction( func ) ) {
+			// For each dataType in the dataTypeExpression
+			for ( ; i < length; i++ ) {
+				dataType = dataTypes[ i ];
+				// We control if we're asked to add before
+				// any existing element
+				placeBefore = /^\+/.test( dataType );
+				if ( placeBefore ) {
+					dataType = dataType.substr( 1 ) || "*";
+				}
+				list = structure[ dataType ] = structure[ dataType ] || [];
+				// then we add to the structure accordingly
+				list[ placeBefore ? "unshift" : "push" ]( func );
+			}
+		}
+	};
+}
+
+// Base inspection function for prefilters and transports
+function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR,
+		dataType /* internal */, inspected /* internal */ ) {
+
+	dataType = dataType || options.dataTypes[ 0 ];
+	inspected = inspected || {};
+
+	inspected[ dataType ] = true;
+
+	var selection,
+		list = structure[ dataType ],
+		i = 0,
+		length = list ? list.length : 0,
+		executeOnly = ( structure === prefilters );
+
+	for ( ; i < length && ( executeOnly || !selection ); i++ ) {
+		selection = list[ i ]( options, originalOptions, jqXHR );
+		// If we got redirected to another dataType
+		// we try there if executing only and not done already
+		if ( typeof selection === "string" ) {
+			if ( !executeOnly || inspected[ selection ] ) {
+				selection = undefined;
+			} else {
+				options.dataTypes.unshift( selection );
+				selection = inspectPrefiltersOrTransports(
+						structure, options, originalOptions, jqXHR, selection, inspected );
+			}
+		}
+	}
+	// If we're only executing or nothing was selected
+	// we try the catchall dataType if not done already
+	if ( ( executeOnly || !selection ) && !inspected[ "*" ] ) {
+		selection = inspectPrefiltersOrTransports(
+				structure, options, originalOptions, jqXHR, "*", inspected );
+	}
+	// unnecessary when only executing (prefilters)
+	// but it'll be ignored by the caller in that case
+	return selection;
+}
+
+// A special extend for ajax options
+// that takes "flat" options (not to be deep extended)
+// Fixes #9887
+function ajaxExtend( target, src ) {
+	var key, deep,
+		flatOptions = jQuery.ajaxSettings.flatOptions || {};
+	for ( key in src ) {
+		if ( src[ key ] !== undefined ) {
+			( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
+		}
+	}
+	if ( deep ) {
+		jQuery.extend( true, target, deep );
+	}
+}
+
+jQuery.fn.load = function( url, params, callback ) {
+	if ( typeof url !== "string" && _load ) {
+		return _load.apply( this, arguments );
+	}
+
+	// Don't do a request if no elements are being requested
+	if ( !this.length ) {
+		return this;
+	}
+
+	var selector, type, response,
+		self = this,
+		off = url.indexOf(" ");
+
+	if ( off >= 0 ) {
+		selector = url.slice( off, url.length );
+		url = url.slice( 0, off );
+	}
+
+	// If it's a function
+	if ( jQuery.isFunction( params ) ) {
+
+		// We assume that it's the callback
+		callback = params;
+		params = undefined;
+
+	// Otherwise, build a param string
+	} else if ( params && typeof params === "object" ) {
+		type = "POST";
+	}
+
+	// Request the remote document
+	jQuery.ajax({
+		url: url,
+
+		// if "type" variable is undefined, then "GET" method will be used
+		type: type,
+		dataType: "html",
+		data: params,
+		complete: function( jqXHR, status ) {
+			if ( callback ) {
+				self.each( callback, response || [ jqXHR.responseText, status, jqXHR ] );
+			}
+		}
+	}).done(function( responseText ) {
+
+		// Save response for use in complete callback
+		response = arguments;
+
+		// See if a selector was specified
+		self.html( selector ?
+
+			// Create a dummy div to hold the results
+			jQuery("<div>")
+
+				// inject the contents of the document in, removing the scripts
+				// to avoid any 'Permission Denied' errors in IE
+				.append( responseText.replace( rscript, "" ) )
+
+				// Locate the specified elements
+				.find( selector ) :
+
+			// If not, just inject the full result
+			responseText );
+
+	});
+
+	return this;
+};
+
+// Attach a bunch of functions for handling common AJAX events
+jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split( " " ), function( i, o ){
+	jQuery.fn[ o ] = function( f ){
+		return this.on( o, f );
+	};
+});
+
+jQuery.each( [ "get", "post" ], function( i, method ) {
+	jQuery[ method ] = function( url, data, callback, type ) {
+		// shift arguments if data argument was omitted
+		if ( jQuery.isFunction( data ) ) {
+			type = type || callback;
+			callback = data;
+			data = undefined;
+		}
+
+		return jQuery.ajax({
+			type: method,
+			url: url,
+			data: data,
+			success: callback,
+			dataType: type
+		});
+	};
+});
+
+jQuery.extend({
+
+	getScript: function( url, callback ) {
+		return jQuery.get( url, undefined, callback, "script" );
+	},
+
+	getJSON: function( url, data, callback ) {
+		return jQuery.get( url, data, callback, "json" );
+	},
+
+	// Creates a full fledged settings object into target
+	// with both ajaxSettings and settings fields.
+	// If target is omitted, writes into ajaxSettings.
+	ajaxSetup: function( target, settings ) {
+		if ( settings ) {
+			// Building a settings object
+			ajaxExtend( target, jQuery.ajaxSettings );
+		} else {
+			// Extending ajaxSettings
+			settings = target;
+			target = jQuery.ajaxSettings;
+		}
+		ajaxExtend( target, settings );
+		return target;
+	},
+
+	ajaxSettings: {
+		url: ajaxLocation,
+		isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ),
+		global: true,
+		type: "GET",
+		contentType: "application/x-www-form-urlencoded; charset=UTF-8",
+		processData: true,
+		async: true,
+		/*
+		timeout: 0,
+		data: null,
+		dataType: null,
+		username: null,
+		password: null,
+		cache: null,
+		throws: false,
+		traditional: false,
+		headers: {},
+		*/
+
+		accepts: {
+			xml: "application/xml, text/xml",
+			html: "text/html",
+			text: "text/plain",
+			json: "application/json, text/javascript",
+			"*": allTypes
+		},
+
+		contents: {
+			xml: /xml/,
+			html: /html/,
+			json: /json/
+		},
+
+		responseFields: {
+			xml: "responseXML",
+			text: "responseText"
+		},
+
+		// List of data converters
+		// 1) key format is "source_type destination_type" (a single space in-between)
+		// 2) the catchall symbol "*" can be used for source_type
+		converters: {
+
+			// Convert anything to text
+			"* text": window.String,
+
+			// Text to html (true = no transformation)
+			"text html": true,
+
+			// Evaluate text as a json expression
+			"text json": jQuery.parseJSON,
+
+			// Parse text as xml
+			"text xml": jQuery.parseXML
+		},
+
+		// For options that shouldn't be deep extended:
+		// you can add your own custom options here if
+		// and when you create one that shouldn't be
+		// deep extended (see ajaxExtend)
+		flatOptions: {
+			context: true,
+			url: true
+		}
+	},
+
+	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
+	ajaxTransport: addToPrefiltersOrTransports( transports ),
+
+	// Main method
+	ajax: function( url, options ) {
+
+		// If url is an object, simulate pre-1.5 signature
+		if ( typeof url === "object" ) {
+			options = url;
+			url = undefined;
+		}
+
+		// Force options to be an object
+		options = options || {};
+
+		var // ifModified key
+			ifModifiedKey,
+			// Response headers
+			responseHeadersString,
+			responseHeaders,
+			// transport
+			transport,
+			// timeout handle
+			timeoutTimer,
+			// Cross-domain detection vars
+			parts,
+			// To know if global events are to be dispatched
+			fireGlobals,
+			// Loop variable
+			i,
+			// Create the final options object
+			s = jQuery.ajaxSetup( {}, options ),
+			// Callbacks context
+			callbackContext = s.context || s,
+			// Context for global events
+			// It's the callbackContext if one was provided in the options
+			// and if it's a DOM node or a jQuery collection
+			globalEventContext = callbackContext !== s &&
+				( callbackContext.nodeType || callbackContext instanceof jQuery ) ?
+						jQuery( callbackContext ) : jQuery.event,
+			// Deferreds
+			deferred = jQuery.Deferred(),
+			completeDeferred = jQuery.Callbacks( "once memory" ),
+			// Status-dependent callbacks
+			statusCode = s.statusCode || {},
+			// Headers (they are sent all at once)
+			requestHeaders = {},
+			requestHeadersNames = {},
+			// The jqXHR state
+			state = 0,
+			// Default abort message
+			strAbort = "canceled",
+			// Fake xhr
+			jqXHR = {
+
+				readyState: 0,
+
+				// Caches the header
+				setRequestHeader: function( name, value ) {
+					if ( !state ) {
+						var lname = name.toLowerCase();
+						name = requestHeadersNames[ lname ] = requestHeadersNames[ lname ] || name;
+						requestHeaders[ name ] = value;
+					}
+					return this;
+				},
+
+				// Raw string
+				getAllResponseHeaders: function() {
+					return state === 2 ? responseHeadersString : null;
+				},
+
+				// Builds headers hashtable if needed
+				getResponseHeader: function( key ) {
+					var match;
+					if ( state === 2 ) {
+						if ( !responseHeaders ) {
+							responseHeaders = {};
+							while( ( match = rheaders.exec( responseHeadersString ) ) ) {
+								responseHeaders[ match[1].toLowerCase() ] = match[ 2 ];
+							}
+						}
+						match = responseHeaders[ key.toLowerCase() ];
+					}
+					return match === undefined ? null : match;
+				},
+
+				// Overrides response content-type header
+				overrideMimeType: function( type ) {
+					if ( !state ) {
+						s.mimeType = type;
+					}
+					return this;
+				},
+
+				// Cancel the request
+				abort: function( statusText ) {
+					statusText = statusText || strAbort;
+					if ( transport ) {
+						transport.abort( statusText );
+					}
+					done( 0, statusText );
+					return this;
+				}
+			};
+
+		// Callback for when everything is done
+		// It is defined here because jslint complains if it is declared
+		// at the end of the function (which would be more logical and readable)
+		function done( status, nativeStatusText, responses, headers ) {
+			var isSuccess, success, error, response, modified,
+				statusText = nativeStatusText;
+
+			// Called once
+			if ( state === 2 ) {
+				return;
+			}
+
+			// State is "done" now
+			state = 2;
+
+			// Clear timeout if it exists
+			if ( timeoutTimer ) {
+				clearTimeout( timeoutTimer );
+			}
+
+			// Dereference transport for early garbage collection
+			// (no matter how long the jqXHR object will be used)
+			transport = undefined;
+
+			// Cache response headers
+			responseHeadersString = headers || "";
+
+			// Set readyState
+			jqXHR.readyState = status > 0 ? 4 : 0;
+
+			// Get response data
+			if ( responses ) {
+				response = ajaxHandleResponses( s, jqXHR, responses );
+			}
+
+			// If successful, handle type chaining
+			if ( status >= 200 && status < 300 || status === 304 ) {
+
+				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+				if ( s.ifModified ) {
+
+					modified = jqXHR.getResponseHeader("Last-Modified");
+					if ( modified ) {
+						jQuery.lastModified[ ifModifiedKey ] = modified;
+					}
+					modified = jqXHR.getResponseHeader("Etag");
+					if ( modified ) {
+						jQuery.etag[ ifModifiedKey ] = modified;
+					}
+				}
+
+				// If not modified
+				if ( status === 304 ) {
+
+					statusText = "notmodified";
+					isSuccess = true;
+
+				// If we have data
+				} else {
+
+					isSuccess = ajaxConvert( s, response );
+					statusText = isSuccess.state;
+					success = isSuccess.data;
+					error = isSuccess.error;
+					isSuccess = !error;
+				}
+			} else {
+				// We extract error from statusText
+				// then normalize statusText and status for non-aborts
+				error = statusText;
+				if ( !statusText || status ) {
+					statusText = "error";
+					if ( status < 0 ) {
+						status = 0;
+					}
+				}
+			}
+
+			// Set data for the fake xhr object
+			jqXHR.status = status;
+			jqXHR.statusText = ( nativeStatusText || statusText ) + "";
+
+			// Success/Error
+			if ( isSuccess ) {
+				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
+			} else {
+				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
+			}
+
+			// Status-dependent callbacks
+			jqXHR.statusCode( statusCode );
+			statusCode = undefined;
+
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajax" + ( isSuccess ? "Success" : "Error" ),
+						[ jqXHR, s, isSuccess ? success : error ] );
+			}
+
+			// Complete
+			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );
+
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );
+				// Handle the global AJAX counter
+				if ( !( --jQuery.active ) ) {
+					jQuery.event.trigger( "ajaxStop" );
+				}
+			}
+		}
+
+		// Attach deferreds
+		deferred.promise( jqXHR );
+		jqXHR.success = jqXHR.done;
+		jqXHR.error = jqXHR.fail;
+		jqXHR.complete = completeDeferred.add;
+
+		// Status-dependent callbacks
+		jqXHR.statusCode = function( map ) {
+			if ( map ) {
+				var tmp;
+				if ( state < 2 ) {
+					for ( tmp in map ) {
+						statusCode[ tmp ] = [ statusCode[tmp], map[tmp] ];
+					}
+				} else {
+					tmp = map[ jqXHR.status ];
+					jqXHR.always( tmp );
+				}
+			}
+			return this;
+		};
+
+		// Remove hash character (#7531: and string promotion)
+		// Add protocol if not provided (#5866: IE7 issue with protocol-less urls)
+		// We also use the url parameter if available
+		s.url = ( ( url || s.url ) + "" ).replace( rhash, "" ).replace( rprotocol, ajaxLocParts[ 1 ] + "//" );
+
+		// Extract dataTypes list
+		s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().split( core_rspace );
+
+		// A cross-domain request is in order when we have a protocol:host:port mismatch
+		if ( s.crossDomain == null ) {
+			parts = rurl.exec( s.url.toLowerCase() );
+			s.crossDomain = !!( parts &&
+				( parts[ 1 ] !== ajaxLocParts[ 1 ] || parts[ 2 ] !== ajaxLocParts[ 2 ] ||
+					( parts[ 3 ] || ( parts[ 1 ] === "http:" ? 80 : 443 ) ) !=
+						( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? 80 : 443 ) ) )
+			);
+		}
+
+		// Convert data if not already a string
+		if ( s.data && s.processData && typeof s.data !== "string" ) {
+			s.data = jQuery.param( s.data, s.traditional );
+		}
+
+		// Apply prefilters
+		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
+
+		// If request was aborted inside a prefilter, stop there
+		if ( state === 2 ) {
+			return jqXHR;
+		}
+
+		// We can fire global events as of now if asked to
+		fireGlobals = s.global;
+
+		// Uppercase the type
+		s.type = s.type.toUpperCase();
+
+		// Determine if request has content
+		s.hasContent = !rnoContent.test( s.type );
+
+		// Watch for a new set of requests
+		if ( fireGlobals && jQuery.active++ === 0 ) {
+			jQuery.event.trigger( "ajaxStart" );
+		}
+
+		// More options handling for requests with no content
+		if ( !s.hasContent ) {
+
+			// If data is available, append data to url
+			if ( s.data ) {
+				s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.data;
+				// #9682: remove data so that it's not used in an eventual retry
+				delete s.data;
+			}
+
+			// Get ifModifiedKey before adding the anti-cache parameter
+			ifModifiedKey = s.url;
+
+			// Add anti-cache in url if needed
+			if ( s.cache === false ) {
+
+				var ts = jQuery.now(),
+					// try replacing _= if it is there
+					ret = s.url.replace( rts, "$1_=" + ts );
+
+				// if nothing was replaced, add timestamp to the end
+				s.url = ret + ( ( ret === s.url ) ? ( rquery.test( s.url ) ? "&" : "?" ) + "_=" + ts : "" );
+			}
+		}
+
+		// Set the correct header, if data is being sent
+		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
+			jqXHR.setRequestHeader( "Content-Type", s.contentType );
+		}
+
+		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+		if ( s.ifModified ) {
+			ifModifiedKey = ifModifiedKey || s.url;
+			if ( jQuery.lastModified[ ifModifiedKey ] ) {
+				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ ifModifiedKey ] );
+			}
+			if ( jQuery.etag[ ifModifiedKey ] ) {
+				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ ifModifiedKey ] );
+			}
+		}
+
+		// Set the Accepts header for the server, depending on the dataType
+		jqXHR.setRequestHeader(
+			"Accept",
+			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[0] ] ?
+				s.accepts[ s.dataTypes[0] ] + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
+				s.accepts[ "*" ]
+		);
+
+		// Check for headers option
+		for ( i in s.headers ) {
+			jqXHR.setRequestHeader( i, s.headers[ i ] );
+		}
+
+		// Allow custom headers/mimetypes and early abort
+		if ( s.beforeSend && ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) {
+				// Abort if not done already and return
+				return jqXHR.abort();
+
+		}
+
+		// aborting is no longer a cancellation
+		strAbort = "abort";
+
+		// Install callbacks on deferreds
+		for ( i in { success: 1, error: 1, complete: 1 } ) {
+			jqXHR[ i ]( s[ i ] );
+		}
+
+		// Get transport
+		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );
+
+		// If no transport, we auto-abort
+		if ( !transport ) {
+			done( -1, "No Transport" );
+		} else {
+			jqXHR.readyState = 1;
+			// Send global event
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
+			}
+			// Timeout
+			if ( s.async && s.timeout > 0 ) {
+				timeoutTimer = setTimeout( function(){
+					jqXHR.abort( "timeout" );
+				}, s.timeout );
+			}
+
+			try {
+				state = 1;
+				transport.send( requestHeaders, done );
+			} catch (e) {
+				// Propagate exception as error if not done
+				if ( state < 2 ) {
+					done( -1, e );
+				// Simply rethrow otherwise
+				} else {
+					throw e;
+				}
+			}
+		}
+
+		return jqXHR;
+	},
+
+	// Counter for holding the number of active queries
+	active: 0,
+
+	// Last-Modified header cache for next request
+	lastModified: {},
+	etag: {}
+
+});
+
+/* Handles responses to an ajax request:
+ * - sets all responseXXX fields accordingly
+ * - finds the right dataType (mediates between content-type and expected dataType)
+ * - returns the corresponding response
+ */
+function ajaxHandleResponses( s, jqXHR, responses ) {
+
+	var ct, type, finalDataType, firstDataType,
+		contents = s.contents,
+		dataTypes = s.dataTypes,
+		responseFields = s.responseFields;
+
+	// Fill responseXXX fields
+	for ( type in responseFields ) {
+		if ( type in responses ) {
+			jqXHR[ responseFields[type] ] = responses[ type ];
+		}
+	}
+
+	// Remove auto dataType and get content-type in the process
+	while( dataTypes[ 0 ] === "*" ) {
+		dataTypes.shift();
+		if ( ct === undefined ) {
+			ct = s.mimeType || jqXHR.getResponseHeader( "content-type" );
+		}
+	}
+
+	// Check if we're dealing with a known content-type
+	if ( ct ) {
+		for ( type in contents ) {
+			if ( contents[ type ] && contents[ type ].test( ct ) ) {
+				dataTypes.unshift( type );
+				break;
+			}
+		}
+	}
+
+	// Check to see if we have a response for the expected dataType
+	if ( dataTypes[ 0 ] in responses ) {
+		finalDataType = dataTypes[ 0 ];
+	} else {
+		// Try convertible dataTypes
+		for ( type in responses ) {
+			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[0] ] ) {
+				finalDataType = type;
+				break;
+			}
+			if ( !firstDataType ) {
+				firstDataType = type;
+			}
+		}
+		// Or just use first one
+		finalDataType = finalDataType || firstDataType;
+	}
+
+	// If we found a dataType
+	// We add the dataType to the list if needed
+	// and return the corresponding response
+	if ( finalDataType ) {
+		if ( finalDataType !== dataTypes[ 0 ] ) {
+			dataTypes.unshift( finalDataType );
+		}
+		return responses[ finalDataType ];
+	}
+}
+
+// Chain conversions given the request and the original response
+function ajaxConvert( s, response ) {
+
+	var conv, conv2, current, tmp,
+		// Work with a copy of dataTypes in case we need to modify it for conversion
+		dataTypes = s.dataTypes.slice(),
+		prev = dataTypes[ 0 ],
+		converters = {},
+		i = 0;
+
+	// Apply the dataFilter if provided
+	if ( s.dataFilter ) {
+		response = s.dataFilter( response, s.dataType );
+	}
+
+	// Create converters map with lowercased keys
+	if ( dataTypes[ 1 ] ) {
+		for ( conv in s.converters ) {
+			converters[ conv.toLowerCase() ] = s.converters[ conv ];
+		}
+	}
+
+	// Convert to each sequential dataType, tolerating list modification
+	for ( ; (current = dataTypes[++i]); ) {
+
+		// There's only work to do if current dataType is non-auto
+		if ( current !== "*" ) {
+
+			// Convert response if prev dataType is non-auto and differs from current
+			if ( prev !== "*" && prev !== current ) {
+
+				// Seek a direct converter
+				conv = converters[ prev + " " + current ] || converters[ "* " + current ];
+
+				// If none found, seek a pair
+				if ( !conv ) {
+					for ( conv2 in converters ) {
+
+						// If conv2 outputs current
+						tmp = conv2.split(" ");
+						if ( tmp[ 1 ] === current ) {
+
+							// If prev can be converted to accepted input
+							conv = converters[ prev + " " + tmp[ 0 ] ] ||
+								converters[ "* " + tmp[ 0 ] ];
+							if ( conv ) {
+								// Condense equivalence converters
+								if ( conv === true ) {
+									conv = converters[ conv2 ];
+
+								// Otherwise, insert the intermediate dataType
+								} else if ( converters[ conv2 ] !== true ) {
+									current = tmp[ 0 ];
+									dataTypes.splice( i--, 0, current );
+								}
+
+								break;
+							}
+						}
+					}
+				}
+
+				// Apply converter (if not an equivalence)
+				if ( conv !== true ) {
+
+					// Unless errors are allowed to bubble, catch and return them
+					if ( conv && s["throws"] ) {
+						response = conv( response );
+					} else {
+						try {
+							response = conv( response );
+						} catch ( e ) {
+							return { state: "parsererror", error: conv ? e : "No conversion from " + prev + " to " + current };
+						}
+					}
+				}
+			}
+
+			// Update prev for next iteration
+			prev = current;
+		}
+	}
+
+	return { state: "success", data: response };
+}
+var oldCallbacks = [],
+	rquestion = /\?/,
+	rjsonp = /(=)\?(?=&|$)|\?\?/,
+	nonce = jQuery.now();
+
+// Default jsonp settings
+jQuery.ajaxSetup({
+	jsonp: "callback",
+	jsonpCallback: function() {
+		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
+		this[ callback ] = true;
+		return callback;
+	}
+});
+
+// Detect, normalize options and install callbacks for jsonp requests
+jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
+
+	var callbackName, overwritten, responseContainer,
+		data = s.data,
+		url = s.url,
+		hasCallback = s.jsonp !== false,
+		replaceInUrl = hasCallback && rjsonp.test( url ),
+		replaceInData = hasCallback && !replaceInUrl && typeof data === "string" &&
+			!( s.contentType || "" ).indexOf("application/x-www-form-urlencoded") &&
+			rjsonp.test( data );
+
+	// Handle iff the expected data type is "jsonp" or we have a parameter to set
+	if ( s.dataTypes[ 0 ] === "jsonp" || replaceInUrl || replaceInData ) {
+
+		// Get callback name, remembering preexisting value associated with it
+		callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
+			s.jsonpCallback() :
+			s.jsonpCallback;
+		overwritten = window[ callbackName ];
+
+		// Insert callback into url or form data
+		if ( replaceInUrl ) {
+			s.url = url.replace( rjsonp, "$1" + callbackName );
+		} else if ( replaceInData ) {
+			s.data = data.replace( rjsonp, "$1" + callbackName );
+		} else if ( hasCallback ) {
+			s.url += ( rquestion.test( url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
+		}
+
+		// Use data converter to retrieve json after script execution
+		s.converters["script json"] = function() {
+			if ( !responseContainer ) {
+				jQuery.error( callbackName + " was not called" );
+			}
+			return responseContainer[ 0 ];
+		};
+
+		// force json dataType
+		s.dataTypes[ 0 ] = "json";
+
+		// Install callback
+		window[ callbackName ] = function() {
+			responseContainer = arguments;
+		};
+
+		// Clean-up function (fires after converters)
+		jqXHR.always(function() {
+			// Restore preexisting value
+			window[ callbackName ] = overwritten;
+
+			// Save back as free
+			if ( s[ callbackName ] ) {
+				// make sure that re-using the options doesn't screw things around
+				s.jsonpCallback = originalSettings.jsonpCallback;
+
+				// save the callback name for future use
+				oldCallbacks.push( callbackName );
+			}
+
+			// Call if it was a function and we have a response
+			if ( responseContainer && jQuery.isFunction( overwritten ) ) {
+				overwritten( responseContainer[ 0 ] );
+			}
+
+			responseContainer = overwritten = undefined;
+		});
+
+		// Delegate to script
+		return "script";
+	}
+});
+// Install script dataType
+jQuery.ajaxSetup({
+	accepts: {
+		script: "text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"
+	},
+	contents: {
+		script: /javascript|ecmascript/
+	},
+	converters: {
+		"text script": function( text ) {
+			jQuery.globalEval( text );
+			return text;
+		}
+	}
+});
+
+// Handle cache's special case and global
+jQuery.ajaxPrefilter( "script", function( s ) {
+	if ( s.cache === undefined ) {
+		s.cache = false;
+	}
+	if ( s.crossDomain ) {
+		s.type = "GET";
+		s.global = false;
+	}
+});
+
+// Bind script tag hack transport
+jQuery.ajaxTransport( "script", function(s) {
+
+	// This transport only deals with cross domain requests
+	if ( s.crossDomain ) {
+
+		var script,
+			head = document.head || document.getElementsByTagName( "head" )[0] || document.documentElement;
+
+		return {
+
+			send: function( _, callback ) {
+
+				script = document.createElement( "script" );
+
+				script.async = "async";
+
+				if ( s.scriptCharset ) {
+					script.charset = s.scriptCharset;
+				}
+
+				script.src = s.url;
+
+				// Attach handlers for all browsers
+				script.onload = script.onreadystatechange = function( _, isAbort ) {
+
+					if ( isAbort || !script.readyState || /loaded|complete/.test( script.readyState ) ) {
+
+						// Handle memory leak in IE
+						script.onload = script.onreadystatechange = null;
+
+						// Remove the script
+						if ( head && script.parentNode ) {
+							head.removeChild( script );
+						}
+
+						// Dereference the script
+						script = undefined;
+
+						// Callback if not abort
+						if ( !isAbort ) {
+							callback( 200, "success" );
+						}
+					}
+				};
+				// Use insertBefore instead of appendChild  to circumvent an IE6 bug.
+				// This arises when a base node is used (#2709 and #4378).
+				head.insertBefore( script, head.firstChild );
+			},
+
+			abort: function() {
+				if ( script ) {
+					script.onload( 0, 1 );
+				}
+			}
+		};
+	}
+});
+var xhrCallbacks,
+	// #5280: Internet Explorer will keep connections alive if we don't abort on unload
+	xhrOnUnloadAbort = window.ActiveXObject ? function() {
+		// Abort all pending requests
+		for ( var key in xhrCallbacks ) {
+			xhrCallbacks[ key ]( 0, 1 );
+		}
+	} : false,
+	xhrId = 0;
+
+// Functions to create xhrs
+function createStandardXHR() {
+	try {
+		return new window.XMLHttpRequest();
+	} catch( e ) {}
+}
+
+function createActiveXHR() {
+	try {
+		return new window.ActiveXObject( "Microsoft.XMLHTTP" );
+	} catch( e ) {}
+}
+
+// Create the request object
+// (This is still attached to ajaxSettings for backward compatibility)
+jQuery.ajaxSettings.xhr = window.ActiveXObject ?
+	/* Microsoft failed to properly
+	 * implement the XMLHttpRequest in IE7 (can't request local files),
+	 * so we use the ActiveXObject when it is available
+	 * Additionally XMLHttpRequest can be disabled in IE7/IE8 so
+	 * we need a fallback.
+	 */
+	function() {
+		return !this.isLocal && createStandardXHR() || createActiveXHR();
+	} :
+	// For all other browsers, use the standard XMLHttpRequest object
+	createStandardXHR;
+
+// Determine support properties
+(function( xhr ) {
+	jQuery.extend( jQuery.support, {
+		ajax: !!xhr,
+		cors: !!xhr && ( "withCredentials" in xhr )
+	});
+})( jQuery.ajaxSettings.xhr() );
+
+// Create transport if the browser can provide an xhr
+if ( jQuery.support.ajax ) {
+
+	jQuery.ajaxTransport(function( s ) {
+		// Cross domain only allowed if supported through XMLHttpRequest
+		if ( !s.crossDomain || jQuery.support.cors ) {
+
+			var callback;
+
+			return {
+				send: function( headers, complete ) {
+
+					// Get a new xhr
+					var handle, i,
+						xhr = s.xhr();
+
+					// Open the socket
+					// Passing null username, generates a login popup on Opera (#2865)
+					if ( s.username ) {
+						xhr.open( s.type, s.url, s.async, s.username, s.password );
+					} else {
+						xhr.open( s.type, s.url, s.async );
+					}
+
+					// Apply custom fields if provided
+					if ( s.xhrFields ) {
+						for ( i in s.xhrFields ) {
+							xhr[ i ] = s.xhrFields[ i ];
+						}
+					}
+
+					// Override mime type if needed
+					if ( s.mimeType && xhr.overrideMimeType ) {
+						xhr.overrideMimeType( s.mimeType );
+					}
+
+					// X-Requested-With header
+					// For cross-domain requests, seeing as conditions for a preflight are
+					// akin to a jigsaw puzzle, we simply never set it to be sure.
+					// (it can always be set on a per-request basis or even using ajaxSetup)
+					// For same-domain requests, won't change header if already provided.
+					if ( !s.crossDomain && !headers["X-Requested-With"] ) {
+						headers[ "X-Requested-With" ] = "XMLHttpRequest";
+					}
+
+					// Need an extra try/catch for cross domain requests in Firefox 3
+					try {
+						for ( i in headers ) {
+							xhr.setRequestHeader( i, headers[ i ] );
+						}
+					} catch( _ ) {}
+
+					// Do send the request
+					// This may raise an exception which is actually
+					// handled in jQuery.ajax (so no try/catch here)
+					xhr.send( ( s.hasContent && s.data ) || null );
+
+					// Listener
+					callback = function( _, isAbort ) {
+
+						var status,
+							statusText,
+							responseHeaders,
+							responses,
+							xml;
+
+						// Firefox throws exceptions when accessing properties
+						// of an xhr when a network error occurred
+						// http://helpful.knobs-dials.com/index.php/Component_returned_failure_code:_0x80040111_(NS_ERROR_NOT_AVAILABLE)
+						try {
+
+							// Was never called and is aborted or complete
+							if ( callback && ( isAbort || xhr.readyState === 4 ) ) {
+
+								// Only called once
+								callback = undefined;
+
+								// Do not keep as active anymore
+								if ( handle ) {
+									xhr.onreadystatechange = jQuery.noop;
+									if ( xhrOnUnloadAbort ) {
+										delete xhrCallbacks[ handle ];
+									}
+								}
+
+								// If it's an abort
+								if ( isAbort ) {
+									// Abort it manually if needed
+									if ( xhr.readyState !== 4 ) {
+										xhr.abort();
+									}
+								} else {
+									status = xhr.status;
+									responseHeaders = xhr.getAllResponseHeaders();
+									responses = {};
+									xml = xhr.responseXML;
+
+									// Construct response list
+									if ( xml && xml.documentElement /* #4958 */ ) {
+										responses.xml = xml;
+									}
+
+									// When requesting binary data, IE6-9 will throw an exception
+									// on any attempt to access responseText (#11426)
+									try {
+										responses.text = xhr.responseText;
+									} catch( e ) {
+									}
+
+									// Firefox throws an exception when accessing
+									// statusText for faulty cross-domain requests
+									try {
+										statusText = xhr.statusText;
+									} catch( e ) {
+										// We normalize with Webkit giving an empty statusText
+										statusText = "";
+									}
+
+									// Filter status for non standard behaviors
+
+									// If the request is local and we have data: assume a success
+									// (success with no data won't get notified, that's the best we
+									// can do given current implementations)
+									if ( !status && s.isLocal && !s.crossDomain ) {
+										status = responses.text ? 200 : 404;
+									// IE - #1450: sometimes returns 1223 when it should be 204
+									} else if ( status === 1223 ) {
+										status = 204;
+									}
+								}
+							}
+						} catch( firefoxAccessException ) {
+							if ( !isAbort ) {
+								complete( -1, firefoxAccessException );
+							}
+						}
+
+						// Call complete if needed
+						if ( responses ) {
+							complete( status, statusText, responses, responseHeaders );
+						}
+					};
+
+					if ( !s.async ) {
+						// if we're in sync mode we fire the callback
+						callback();
+					} else if ( xhr.readyState === 4 ) {
+						// (IE6 & IE7) if it's in cache and has been
+						// retrieved directly we need to fire the callback
+						setTimeout( callback, 0 );
+					} else {
+						handle = ++xhrId;
+						if ( xhrOnUnloadAbort ) {
+							// Create the active xhrs callbacks list if needed
+							// and attach the unload handler
+							if ( !xhrCallbacks ) {
+								xhrCallbacks = {};
+								jQuery( window ).unload( xhrOnUnloadAbort );
+							}
+							// Add to list of active xhrs callbacks
+							xhrCallbacks[ handle ] = callback;
+						}
+						xhr.onreadystatechange = callback;
+					}
+				},
+
+				abort: function() {
+					if ( callback ) {
+						callback(0,1);
+					}
+				}
+			};
+		}
+	});
+}
+var fxNow, timerId,
+	rfxtypes = /^(?:toggle|show|hide)$/,
+	rfxnum = new RegExp( "^(?:([-+])=|)(" + core_pnum + ")([a-z%]*)$", "i" ),
+	rrun = /queueHooks$/,
+	animationPrefilters = [ defaultPrefilter ],
+	tweeners = {
+		"*": [function( prop, value ) {
+			var end, unit,
+				tween = this.createTween( prop, value ),
+				parts = rfxnum.exec( value ),
+				target = tween.cur(),
+				start = +target || 0,
+				scale = 1,
+				maxIterations = 20;
+
+			if ( parts ) {
+				end = +parts[2];
+				unit = parts[3] || ( jQuery.cssNumber[ prop ] ? "" : "px" );
+
+				// We need to compute starting value
+				if ( unit !== "px" && start ) {
+					// Iteratively approximate from a nonzero starting point
+					// Prefer the current property, because this process will be trivial if it uses the same units
+					// Fallback to end or a simple constant
+					start = jQuery.css( tween.elem, prop, true ) || end || 1;
+
+					do {
+						// If previous iteration zeroed out, double until we get *something*
+						// Use a string for doubling factor so we don't accidentally see scale as unchanged below
+						scale = scale || ".5";
+
+						// Adjust and apply
+						start = start / scale;
+						jQuery.style( tween.elem, prop, start + unit );
+
+					// Update scale, tolerating zero or NaN from tween.cur()
+					// And breaking the loop if scale is unchanged or perfect, or if we've just had enough
+					} while ( scale !== (scale = tween.cur() / target) && scale !== 1 && --maxIterations );
+				}
+
+				tween.unit = unit;
+				tween.start = start;
+				// If a +=/-= token was provided, we're doing a relative animation
+				tween.end = parts[1] ? start + ( parts[1] + 1 ) * end : end;
+			}
+			return tween;
+		}]
+	};
+
+// Animations created synchronously will run synchronously
+function createFxNow() {
+	setTimeout(function() {
+		fxNow = undefined;
+	}, 0 );
+	return ( fxNow = jQuery.now() );
+}
+
+function createTweens( animation, props ) {
+	jQuery.each( props, function( prop, value ) {
+		var collection = ( tweeners[ prop ] || [] ).concat( tweeners[ "*" ] ),
+			index = 0,
+			length = collection.length;
+		for ( ; index < length; index++ ) {
+			if ( collection[ index ].call( animation, prop, value ) ) {
+
+				// we're done with this property
+				return;
+			}
+		}
+	});
+}
+
+function Animation( elem, properties, options ) {
+	var result,
+		index = 0,
+		tweenerIndex = 0,
+		length = animationPrefilters.length,
+		deferred = jQuery.Deferred().always( function() {
+			// don't match elem in the :animated selector
+			delete tick.elem;
+		}),
+		tick = function() {
+			var currentTime = fxNow || createFxNow(),
+				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
+				// archaic crash bug won't allow us to use 1 - ( 0.5 || 0 ) (#12497)
+				temp = remaining / animation.duration || 0,
+				percent = 1 - temp,
+				index = 0,
+				length = animation.tweens.length;
+
+			for ( ; index < length ; index++ ) {
+				animation.tweens[ index ].run( percent );
+			}
+
+			deferred.notifyWith( elem, [ animation, percent, remaining ]);
+
+			if ( percent < 1 && length ) {
+				return remaining;
+			} else {
+				deferred.resolveWith( elem, [ animation ] );
+				return false;
+			}
+		},
+		animation = deferred.promise({
+			elem: elem,
+			props: jQuery.extend( {}, properties ),
+			opts: jQuery.extend( true, { specialEasing: {} }, options ),
+			originalProperties: properties,
+			originalOptions: options,
+			startTime: fxNow || createFxNow(),
+			duration: options.duration,
+			tweens: [],
+			createTween: function( prop, end, easing ) {
+				var tween = jQuery.Tween( elem, animation.opts, prop, end,
+						animation.opts.specialEasing[ prop ] || animation.opts.easing );
+				animation.tweens.push( tween );
+				return tween;
+			},
+			stop: function( gotoEnd ) {
+				var index = 0,
+					// if we are going to the end, we want to run all the tweens
+					// otherwise we skip this part
+					length = gotoEnd ? animation.tweens.length : 0;
+
+				for ( ; index < length ; index++ ) {
+					animation.tweens[ index ].run( 1 );
+				}
+
+				// resolve when we played the last frame
+				// otherwise, reject
+				if ( gotoEnd ) {
+					deferred.resolveWith( elem, [ animation, gotoEnd ] );
+				} else {
+					deferred.rejectWith( elem, [ animation, gotoEnd ] );
+				}
+				return this;
+			}
+		}),
+		props = animation.props;
+
+	propFilter( props, animation.opts.specialEasing );
+
+	for ( ; index < length ; index++ ) {
+		result = animationPrefilters[ index ].call( animation, elem, props, animation.opts );
+		if ( result ) {
+			return result;
+		}
+	}
+
+	createTweens( animation, props );
+
+	if ( jQuery.isFunction( animation.opts.start ) ) {
+		animation.opts.start.call( elem, animation );
+	}
+
+	jQuery.fx.timer(
+		jQuery.extend( tick, {
+			anim: animation,
+			queue: animation.opts.queue,
+			elem: elem
+		})
+	);
+
+	// attach callbacks from options
+	return animation.progress( animation.opts.progress )
+		.done( animation.opts.done, animation.opts.complete )
+		.fail( animation.opts.fail )
+		.always( animation.opts.always );
+}
+
+function propFilter( props, specialEasing ) {
+	var index, name, easing, value, hooks;
+
+	// camelCase, specialEasing and expand cssHook pass
+	for ( index in props ) {
+		name = jQuery.camelCase( index );
+		easing = specialEasing[ name ];
+		value = props[ index ];
+		if ( jQuery.isArray( value ) ) {
+			easing = value[ 1 ];
+			value = props[ index ] = value[ 0 ];
+		}
+
+		if ( index !== name ) {
+			props[ name ] = value;
+			delete props[ index ];
+		}
+
+		hooks = jQuery.cssHooks[ name ];
+		if ( hooks && "expand" in hooks ) {
+			value = hooks.expand( value );
+			delete props[ name ];
+
+			// not quite $.extend, this wont overwrite keys already present.
+			// also - reusing 'index' from above because we have the correct "name"
+			for ( index in value ) {
+				if ( !( index in props ) ) {
+					props[ index ] = value[ index ];
+					specialEasing[ index ] = easing;
+				}
+			}
+		} else {
+			specialEasing[ name ] = easing;
+		}
+	}
+}
+
+jQuery.Animation = jQuery.extend( Animation, {
+
+	tweener: function( props, callback ) {
+		if ( jQuery.isFunction( props ) ) {
+			callback = props;
+			props = [ "*" ];
+		} else {
+			props = props.split(" ");
+		}
+
+		var prop,
+			index = 0,
+			length = props.length;
+
+		for ( ; index < length ; index++ ) {
+			prop = props[ index ];
+			tweeners[ prop ] = tweeners[ prop ] || [];
+			tweeners[ prop ].unshift( callback );
+		}
+	},
+
+	prefilter: function( callback, prepend ) {
+		if ( prepend ) {
+			animationPrefilters.unshift( callback );
+		} else {
+			animationPrefilters.push( callback );
+		}
+	}
+});
+
+function defaultPrefilter( elem, props, opts ) {
+	var index, prop, value, length, dataShow, toggle, tween, hooks, oldfire,
+		anim = this,
+		style = elem.style,
+		orig = {},
+		handled = [],
+		hidden = elem.nodeType && isHidden( elem );
+
+	// handle queue: false promises
+	if ( !opts.queue ) {
+		hooks = jQuery._queueHooks( elem, "fx" );
+		if ( hooks.unqueued == null ) {
+			hooks.unqueued = 0;
+			oldfire = hooks.empty.fire;
+			hooks.empty.fire = function() {
+				if ( !hooks.unqueued ) {
+					oldfire();
+				}
+			};
+		}
+		hooks.unqueued++;
+
+		anim.always(function() {
+			// doing this makes sure that the complete handler will be called
+			// before this completes
+			anim.always(function() {
+				hooks.unqueued--;
+				if ( !jQuery.queue( elem, "fx" ).length ) {
+					hooks.empty.fire();
+				}
+			});
+		});
+	}
+
+	// height/width overflow pass
+	if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) {
+		// Make sure that nothing sneaks out
+		// Record all 3 overflow attributes because IE does not
+		// change the overflow attribute when overflowX and
+		// overflowY are set to the same value
+		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
+
+		// Set display property to inline-block for height/width
+		// animations on inline elements that are having width/height animated
+		if ( jQuery.css( elem, "display" ) === "inline" &&
+				jQuery.css( elem, "float" ) === "none" ) {
+
+			// inline-level elements accept inline-block;
+			// block-level elements need to be inline with layout
+			if ( !jQuery.support.inlineBlockNeedsLayout || css_defaultDisplay( elem.nodeName ) === "inline" ) {
+				style.display = "inline-block";
+
+			} else {
+				style.zoom = 1;
+			}
+		}
+	}
+
+	if ( opts.overflow ) {
+		style.overflow = "hidden";
+		if ( !jQuery.support.shrinkWrapBlocks ) {
+			anim.done(function() {
+				style.overflow = opts.overflow[ 0 ];
+				style.overflowX = opts.overflow[ 1 ];
+				style.overflowY = opts.overflow[ 2 ];
+			});
+		}
+	}
+
+
+	// show/hide pass
+	for ( index in props ) {
+		value = props[ index ];
+		if ( rfxtypes.exec( value ) ) {
+			delete props[ index ];
+			toggle = toggle || value === "toggle";
+			if ( value === ( hidden ? "hide" : "show" ) ) {
+				continue;
+			}
+			handled.push( index );
+		}
+	}
+
+	length = handled.length;
+	if ( length ) {
+		dataShow = jQuery._data( elem, "fxshow" ) || jQuery._data( elem, "fxshow", {} );
+		if ( "hidden" in dataShow ) {
+			hidden = dataShow.hidden;
+		}
+
+		// store state if its toggle - enables .stop().toggle() to "reverse"
+		if ( toggle ) {
+			dataShow.hidden = !hidden;
+		}
+		if ( hidden ) {
+			jQuery( elem ).show();
+		} else {
+			anim.done(function() {
+				jQuery( elem ).hide();
+			});
+		}
+		anim.done(function() {
+			var prop;
+			jQuery.removeData( elem, "fxshow", true );
+			for ( prop in orig ) {
+				jQuery.style( elem, prop, orig[ prop ] );
+			}
+		});
+		for ( index = 0 ; index < length ; index++ ) {
+			prop = handled[ index ];
+			tween = anim.createTween( prop, hidden ? dataShow[ prop ] : 0 );
+			orig[ prop ] = dataShow[ prop ] || jQuery.style( elem, prop );
+
+			if ( !( prop in dataShow ) ) {
+				dataShow[ prop ] = tween.start;
+				if ( hidden ) {
+					tween.end = tween.start;
+					tween.start = prop === "width" || prop === "height" ? 1 : 0;
+				}
+			}
+		}
+	}
+}
+
+function Tween( elem, options, prop, end, easing ) {
+	return new Tween.prototype.init( elem, options, prop, end, easing );
+}
+jQuery.Tween = Tween;
+
+Tween.prototype = {
+	constructor: Tween,
+	init: function( elem, options, prop, end, easing, unit ) {
+		this.elem = elem;
+		this.prop = prop;
+		this.easing = easing || "swing";
+		this.options = options;
+		this.start = this.now = this.cur();
+		this.end = end;
+		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
+	},
+	cur: function() {
+		var hooks = Tween.propHooks[ this.prop ];
+
+		return hooks && hooks.get ?
+			hooks.get( this ) :
+			Tween.propHooks._default.get( this );
+	},
+	run: function( percent ) {
+		var eased,
+			hooks = Tween.propHooks[ this.prop ];
+
+		if ( this.options.duration ) {
+			this.pos = eased = jQuery.easing[ this.easing ](
+				percent, this.options.duration * percent, 0, 1, this.options.duration
+			);
+		} else {
+			this.pos = eased = percent;
+		}
+		this.now = ( this.end - this.start ) * eased + this.start;
+
+		if ( this.options.step ) {
+			this.options.step.call( this.elem, this.now, this );
+		}
+
+		if ( hooks && hooks.set ) {
+			hooks.set( this );
+		} else {
+			Tween.propHooks._default.set( this );
+		}
+		return this;
+	}
+};
+
+Tween.prototype.init.prototype = Tween.prototype;
+
+Tween.propHooks = {
+	_default: {
+		get: function( tween ) {
+			var result;
+
+			if ( tween.elem[ tween.prop ] != null &&
+				(!tween.elem.style || tween.elem.style[ tween.prop ] == null) ) {
+				return tween.elem[ tween.prop ];
+			}
+
+			// passing any value as a 4th parameter to .css will automatically
+			// attempt a parseFloat and fallback to a string if the parse fails
+			// so, simple values such as "10px" are parsed to Float.
+			// complex values such as "rotate(1rad)" are returned as is.
+			result = jQuery.css( tween.elem, tween.prop, false, "" );
+			// Empty strings, null, undefined and "auto" are converted to 0.
+			return !result || result === "auto" ? 0 : result;
+		},
+		set: function( tween ) {
+			// use step hook for back compat - use cssHook if its there - use .style if its
+			// available and use plain properties where available
+			if ( jQuery.fx.step[ tween.prop ] ) {
+				jQuery.fx.step[ tween.prop ]( tween );
+			} else if ( tween.elem.style && ( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null || jQuery.cssHooks[ tween.prop ] ) ) {
+				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
+			} else {
+				tween.elem[ tween.prop ] = tween.now;
+			}
+		}
+	}
+};
+
+// Remove in 2.0 - this supports IE8's panic based approach
+// to setting things on disconnected nodes
+
+Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
+	set: function( tween ) {
+		if ( tween.elem.nodeType && tween.elem.parentNode ) {
+			tween.elem[ tween.prop ] = tween.now;
+		}
+	}
+};
+
+jQuery.each([ "toggle", "show", "hide" ], function( i, name ) {
+	var cssFn = jQuery.fn[ name ];
+	jQuery.fn[ name ] = function( speed, easing, callback ) {
+		return speed == null || typeof speed === "boolean" ||
+			// special check for .toggle( handler, handler, ... )
+			( !i && jQuery.isFunction( speed ) && jQuery.isFunction( easing ) ) ?
+			cssFn.apply( this, arguments ) :
+			this.animate( genFx( name, true ), speed, easing, callback );
+	};
+});
+
+jQuery.fn.extend({
+	fadeTo: function( speed, to, easing, callback ) {
+
+		// show any hidden elements after setting opacity to 0
+		return this.filter( isHidden ).css( "opacity", 0 ).show()
+
+			// animate to the value specified
+			.end().animate({ opacity: to }, speed, easing, callback );
+	},
+	animate: function( prop, speed, easing, callback ) {
+		var empty = jQuery.isEmptyObject( prop ),
+			optall = jQuery.speed( speed, easing, callback ),
+			doAnimation = function() {
+				// Operate on a copy of prop so per-property easing won't be lost
+				var anim = Animation( this, jQuery.extend( {}, prop ), optall );
+
+				// Empty animations resolve immediately
+				if ( empty ) {
+					anim.stop( true );
+				}
+			};
+
+		return empty || optall.queue === false ?
+			this.each( doAnimation ) :
+			this.queue( optall.queue, doAnimation );
+	},
+	stop: function( type, clearQueue, gotoEnd ) {
+		var stopQueue = function( hooks ) {
+			var stop = hooks.stop;
+			delete hooks.stop;
+			stop( gotoEnd );
+		};
+
+		if ( typeof type !== "string" ) {
+			gotoEnd = clearQueue;
+			clearQueue = type;
+			type = undefined;
+		}
+		if ( clearQueue && type !== false ) {
+			this.queue( type || "fx", [] );
+		}
+
+		return this.each(function() {
+			var dequeue = true,
+				index = type != null && type + "queueHooks",
+				timers = jQuery.timers,
+				data = jQuery._data( this );
+
+			if ( index ) {
+				if ( data[ index ] && data[ index ].stop ) {
+					stopQueue( data[ index ] );
+				}
+			} else {
+				for ( index in data ) {
+					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
+						stopQueue( data[ index ] );
+					}
+				}
+			}
+
+			for ( index = timers.length; index--; ) {
+				if ( timers[ index ].elem === this && (type == null || timers[ index ].queue === type) ) {
+					timers[ index ].anim.stop( gotoEnd );
+					dequeue = false;
+					timers.splice( index, 1 );
+				}
+			}
+
+			// start the next in the queue if the last step wasn't forced
+			// timers currently will call their complete callbacks, which will dequeue
+			// but only if they were gotoEnd
+			if ( dequeue || !gotoEnd ) {
+				jQuery.dequeue( this, type );
+			}
+		});
+	}
+});
+
+// Generate parameters to create a standard animation
+function genFx( type, includeWidth ) {
+	var which,
+		attrs = { height: type },
+		i = 0;
+
+	// if we include width, step value is 1 to do all cssExpand values,
+	// if we don't include width, step value is 2 to skip over Left and Right
+	includeWidth = includeWidth? 1 : 0;
+	for( ; i < 4 ; i += 2 - includeWidth ) {
+		which = cssExpand[ i ];
+		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
+	}
+
+	if ( includeWidth ) {
+		attrs.opacity = attrs.width = type;
+	}
+
+	return attrs;
+}
+
+// Generate shortcuts for custom animations
+jQuery.each({
+	slideDown: genFx("show"),
+	slideUp: genFx("hide"),
+	slideToggle: genFx("toggle"),
+	fadeIn: { opacity: "show" },
+	fadeOut: { opacity: "hide" },
+	fadeToggle: { opacity: "toggle" }
+}, function( name, props ) {
+	jQuery.fn[ name ] = function( speed, easing, callback ) {
+		return this.animate( props, speed, easing, callback );
+	};
+});
+
+jQuery.speed = function( speed, easing, fn ) {
+	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
+		complete: fn || !fn && easing ||
+			jQuery.isFunction( speed ) && speed,
+		duration: speed,
+		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
+	};
+
+	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
+		opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;
+
+	// normalize opt.queue - true/undefined/null -> "fx"
+	if ( opt.queue == null || opt.queue === true ) {
+		opt.queue = "fx";
+	}
+
+	// Queueing
+	opt.old = opt.complete;
+
+	opt.complete = function() {
+		if ( jQuery.isFunction( opt.old ) ) {
+			opt.old.call( this );
+		}
+
+		if ( opt.queue ) {
+			jQuery.dequeue( this, opt.queue );
+		}
+	};
+
+	return opt;
+};
+
+jQuery.easing = {
+	linear: function( p ) {
+		return p;
+	},
+	swing: function( p ) {
+		return 0.5 - Math.cos( p*Math.PI ) / 2;
+	}
+};
+
+jQuery.timers = [];
+jQuery.fx = Tween.prototype.init;
+jQuery.fx.tick = function() {
+	var timer,
+		timers = jQuery.timers,
+		i = 0;
+
+	fxNow = jQuery.now();
+
+	for ( ; i < timers.length; i++ ) {
+		timer = timers[ i ];
+		// Checks the timer has not already been removed
+		if ( !timer() && timers[ i ] === timer ) {
+			timers.splice( i--, 1 );
+		}
+	}
+
+	if ( !timers.length ) {
+		jQuery.fx.stop();
+	}
+	fxNow = undefined;
+};
+
+jQuery.fx.timer = function( timer ) {
+	if ( timer() && jQuery.timers.push( timer ) && !timerId ) {
+		timerId = setInterval( jQuery.fx.tick, jQuery.fx.interval );
+	}
+};
+
+jQuery.fx.interval = 13;
+
+jQuery.fx.stop = function() {
+	clearInterval( timerId );
+	timerId = null;
+};
+
+jQuery.fx.speeds = {
+	slow: 600,
+	fast: 200,
+	// Default speed
+	_default: 400
+};
+
+// Back Compat <1.8 extension point
+jQuery.fx.step = {};
+
+if ( jQuery.expr && jQuery.expr.filters ) {
+	jQuery.expr.filters.animated = function( elem ) {
+		return jQuery.grep(jQuery.timers, function( fn ) {
+			return elem === fn.elem;
+		}).length;
+	};
+}
+var rroot = /^(?:body|html)$/i;
+
+jQuery.fn.offset = function( options ) {
+	if ( arguments.length ) {
+		return options === undefined ?
+			this :
+			this.each(function( i ) {
+				jQuery.offset.setOffset( this, options, i );
+			});
+	}
+
+	var docElem, body, win, clientTop, clientLeft, scrollTop, scrollLeft,
+		box = { top: 0, left: 0 },
+		elem = this[ 0 ],
+		doc = elem && elem.ownerDocument;
+
+	if ( !doc ) {
+		return;
+	}
+
+	if ( (body = doc.body) === elem ) {
+		return jQuery.offset.bodyOffset( elem );
+	}
+
+	docElem = doc.documentElement;
+
+	// Make sure it's not a disconnected DOM node
+	if ( !jQuery.contains( docElem, elem ) ) {
+		return box;
+	}
+
+	// If we don't have gBCR, just use 0,0 rather than error
+	// BlackBerry 5, iOS 3 (original iPhone)
+	if ( typeof elem.getBoundingClientRect !== "undefined" ) {
+		box = elem.getBoundingClientRect();
+	}
+	win = getWindow( doc );
+	clientTop  = docElem.clientTop  || body.clientTop  || 0;
+	clientLeft = docElem.clientLeft || body.clientLeft || 0;
+	scrollTop  = win.pageYOffset || docElem.scrollTop;
+	scrollLeft = win.pageXOffset || docElem.scrollLeft;
+	return {
+		top: box.top  + scrollTop  - clientTop,
+		left: box.left + scrollLeft - clientLeft
+	};
+};
+
+jQuery.offset = {
+
+	bodyOffset: function( body ) {
+		var top = body.offsetTop,
+			left = body.offsetLeft;
+
+		if ( jQuery.support.doesNotIncludeMarginInBodyOffset ) {
+			top  += parseFloat( jQuery.css(body, "marginTop") ) || 0;
+			left += parseFloat( jQuery.css(body, "marginLeft") ) || 0;
+		}
+
+		return { top: top, left: left };
+	},
+
+	setOffset: function( elem, options, i ) {
+		var position = jQuery.css( elem, "position" );
+
+		// set position first, in-case top/left are set even on static elem
+		if ( position === "static" ) {
+			elem.style.position = "relative";
+		}
+
+		var curElem = jQuery( elem ),
+			curOffset = curElem.offset(),
+			curCSSTop = jQuery.css( elem, "top" ),
+			curCSSLeft = jQuery.css( elem, "left" ),
+			calculatePosition = ( position === "absolute" || position === "fixed" ) && jQuery.inArray("auto", [curCSSTop, curCSSLeft]) > -1,
+			props = {}, curPosition = {}, curTop, curLeft;
+
+		// need to be able to calculate position if either top or left is auto and position is either absolute or fixed
+		if ( calculatePosition ) {
+			curPosition = curElem.position();
+			curTop = curPosition.top;
+			curLeft = curPosition.left;
+		} else {
+			curTop = parseFloat( curCSSTop ) || 0;
+			curLeft = parseFloat( curCSSLeft ) || 0;
+		}
+
+		if ( jQuery.isFunction( options ) ) {
+			options = options.call( elem, i, curOffset );
+		}
+
+		if ( options.top != null ) {
+			props.top = ( options.top - curOffset.top ) + curTop;
+		}
+		if ( options.left != null ) {
+			props.left = ( options.left - curOffset.left ) + curLeft;
+		}
+
+		if ( "using" in options ) {
+			options.using.call( elem, props );
+		} else {
+			curElem.css( props );
+		}
+	}
+};
+
+
+jQuery.fn.extend({
+
+	position: function() {
+		if ( !this[0] ) {
+			return;
+		}
+
+		var elem = this[0],
+
+		// Get *real* offsetParent
+		offsetParent = this.offsetParent(),
+
+		// Get correct offsets
+		offset       = this.offset(),
+		parentOffset = rroot.test(offsetParent[0].nodeName) ? { top: 0, left: 0 } : offsetParent.offset();
+
+		// Subtract element margins
+		// note: when an element has margin: auto the offsetLeft and marginLeft
+		// are the same in Safari causing offset.left to incorrectly be 0
+		offset.top  -= parseFloat( jQuery.css(elem, "marginTop") ) || 0;
+		offset.left -= parseFloat( jQuery.css(elem, "marginLeft") ) || 0;
+
+		// Add offsetParent borders
+		parentOffset.top  += parseFloat( jQuery.css(offsetParent[0], "borderTopWidth") ) || 0;
+		parentOffset.left += parseFloat( jQuery.css(offsetParent[0], "borderLeftWidth") ) || 0;
+
+		// Subtract the two offsets
+		return {
+			top:  offset.top  - parentOffset.top,
+			left: offset.left - parentOffset.left
+		};
+	},
+
+	offsetParent: function() {
+		return this.map(function() {
+			var offsetParent = this.offsetParent || document.body;
+			while ( offsetParent && (!rroot.test(offsetParent.nodeName) && jQuery.css(offsetParent, "position") === "static") ) {
+				offsetParent = offsetParent.offsetParent;
+			}
+			return offsetParent || document.body;
+		});
+	}
+});
+
+
+// Create scrollLeft and scrollTop methods
+jQuery.each( {scrollLeft: "pageXOffset", scrollTop: "pageYOffset"}, function( method, prop ) {
+	var top = /Y/.test( prop );
+
+	jQuery.fn[ method ] = function( val ) {
+		return jQuery.access( this, function( elem, method, val ) {
+			var win = getWindow( elem );
+
+			if ( val === undefined ) {
+				return win ? (prop in win) ? win[ prop ] :
+					win.document.documentElement[ method ] :
+					elem[ method ];
+			}
+
+			if ( win ) {
+				win.scrollTo(
+					!top ? val : jQuery( win ).scrollLeft(),
+					 top ? val : jQuery( win ).scrollTop()
+				);
+
+			} else {
+				elem[ method ] = val;
+			}
+		}, method, val, arguments.length, null );
+	};
+});
+
+function getWindow( elem ) {
+	return jQuery.isWindow( elem ) ?
+		elem :
+		elem.nodeType === 9 ?
+			elem.defaultView || elem.parentWindow :
+			false;
+}
+// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
+jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
+	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name }, function( defaultExtra, funcName ) {
+		// margin is only for outerHeight, outerWidth
+		jQuery.fn[ funcName ] = function( margin, value ) {
+			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
+				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );
+
+			return jQuery.access( this, function( elem, type, value ) {
+				var doc;
+
+				if ( jQuery.isWindow( elem ) ) {
+					// As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there
+					// isn't a whole lot we can do. See pull request at this URL for discussion:
+					// https://github.com/jquery/jquery/pull/764
+					return elem.document.documentElement[ "client" + name ];
+				}
+
+				// Get document width or height
+				if ( elem.nodeType === 9 ) {
+					doc = elem.documentElement;
+
+					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height], whichever is greatest
+					// unfortunately, this causes bug #3838 in IE6/8 only, but there is currently no good, small way to fix it.
+					return Math.max(
+						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
+						elem.body[ "offset" + name ], doc[ "offset" + name ],
+						doc[ "client" + name ]
+					);
+				}
+
+				return value === undefined ?
+					// Get width or height on the element, requesting but not forcing parseFloat
+					jQuery.css( elem, type, value, extra ) :
+
+					// Set width or height on the element
+					jQuery.style( elem, type, value, extra );
+			}, type, chainable ? margin : undefined, chainable, null );
+		};
+	});
+});
+// Expose jQuery to the global object
+// window.jQuery = window.$ = jQuery;
+
+// Expose jQuery as an AMD module, but only for AMD loaders that
+// understand the issues with loading multiple versions of jQuery
+// in a page that all might call define(). The loader will indicate
+// they have special allowances for multiple jQuery versions by
+// specifying define.amd.jQuery = true. Register as a named module,
+// since jQuery can be concatenated with other files that may use define,
+// but not use a proper concatenation script that understands anonymous
+// AMD modules. A named AMD is safest and most robust way to register.
+// Lowercase jquery is used because AMD module names are derived from
+// file names, and jQuery is normally delivered in a lowercase file name.
+// Do this after creating the global so that if an AMD module wants to call
+// noConflict to hide this version of jQuery, it will work.
+//if ( typeof define === "function" && define.amd && define.amd.jQuery ) {
+//	define( "jquery", [], function () { return jQuery; } );
+//}
+
+jQuery.noConflict(true)
+return jQuery;
+
+})( window );
+
+});
diff --git a/services/chat/public/js/libs/jquery.storage.js b/services/chat/public/js/libs/jquery.storage.js
new file mode 100644
index 0000000000..a539937655
--- /dev/null
+++ b/services/chat/public/js/libs/jquery.storage.js
@@ -0,0 +1,85 @@
+/*!
+ * jquery.storage.js 0.0.3 - https://github.com/yckart/jquery.storage.js
+ * The client-side storage for every browser, on any device.
+ *
+ * Copyright (c) 2012 Yannick Albert (http://yckart.com)
+ * Licensed under the MIT license (http://www.opensource.org/licenses/mit-license.php).
+ * 2013/02/10
+ **/
+define([], function() {
+;(function($, window, document) {
+    'use strict';
+
+    $.map(['localStorage', 'sessionStorage'], function( method ) {
+        var defaults = {
+            cookiePrefix : 'fallback:' + method + ':',
+            cookieOptions : {
+                path : '/',
+                domain : document.domain,
+                expires : ('localStorage' === method) ? { expires: 365 } : undefined
+            }
+        };
+
+        try {
+            $.support[method] = method in window && window[method] !== null;
+        } catch (e) {
+            $.support[method] = false;
+        }
+		
+        $[method] = function(key, value) {
+            var options = $.extend({}, defaults, $[method].options);
+
+            this.getItem = function( key ) {
+                var returns = function(key){
+                    return JSON.parse($.support[method] ? window[method].getItem(key) : $.cookie(options.cookiePrefix + key));
+                };
+                if(typeof key === 'string') return returns(key);
+
+                var arr = [],
+                    i = key.length;
+                while(i--) arr[i] = returns(key[i]);
+                return arr;
+            };
+
+            this.setItem = function( key, value ) {
+                value = JSON.stringify(value);
+                return $.support[method] ? window[method].setItem(key, value) : $.cookie(options.cookiePrefix + key, value, options.cookieOptions);
+            };
+
+            this.removeItem = function( key ) {
+                return $.support[method] ? window[method].removeItem(key) : $.cookie(options.cookiePrefix + key, null, $.extend(options.cookieOptions, {
+                    expires: -1
+                }));
+            };
+
+            this.clear = function() {
+                if($.support[method]) {
+                    return window[method].clear();
+                } else {
+                    var reg = new RegExp('^' + options.cookiePrefix, ''),
+                        opts = $.extend(options.cookieOptions, {
+                            expires: -1
+                        });
+
+                    if(document.cookie && document.cookie !== ''){
+                        $.map(document.cookie.split(';'), function( cookie ){
+                            if(reg.test(cookie = $.trim(cookie))) {
+                                 $.cookie( cookie.substr(0,cookie.indexOf('=')), null, opts);
+                            }
+                        });
+                    }
+                }
+            };
+
+            if (typeof key !== "undefined") {
+                return typeof value !== "undefined" ? ( value === null ? this.removeItem(key) : this.setItem(key, value) ) : this.getItem(key);
+            }
+
+            return this;
+        };
+
+        $[method].options = defaults;
+    });
+}(jQuery, window, document));
+
+});
diff --git a/services/chat/public/js/libs/moment.js b/services/chat/public/js/libs/moment.js
new file mode 100644
index 0000000000..568ad05cec
--- /dev/null
+++ b/services/chat/public/js/libs/moment.js
@@ -0,0 +1,6 @@
+//! moment.js
+//! version : 2.4.0
+//! authors : Tim Wood, Iskren Chernev, Moment.js contributors
+//! license : MIT
+//! momentjs.com
+(function(a){function b(a,b){return function(c){return i(a.call(this,c),b)}}function c(a,b){return function(c){return this.lang().ordinal(a.call(this,c),b)}}function d(){}function e(a){u(a),g(this,a)}function f(a){var b=o(a),c=b.year||0,d=b.month||0,e=b.week||0,f=b.day||0,g=b.hour||0,h=b.minute||0,i=b.second||0,j=b.millisecond||0;this._input=a,this._milliseconds=+j+1e3*i+6e4*h+36e5*g,this._days=+f+7*e,this._months=+d+12*c,this._data={},this._bubble()}function g(a,b){for(var c in b)b.hasOwnProperty(c)&&(a[c]=b[c]);return b.hasOwnProperty("toString")&&(a.toString=b.toString),b.hasOwnProperty("valueOf")&&(a.valueOf=b.valueOf),a}function h(a){return 0>a?Math.ceil(a):Math.floor(a)}function i(a,b){for(var c=a+"";c.length<b;)c="0"+c;return c}function j(a,b,c,d){var e,f,g=b._milliseconds,h=b._days,i=b._months;g&&a._d.setTime(+a._d+g*c),(h||i)&&(e=a.minute(),f=a.hour()),h&&a.date(a.date()+h*c),i&&a.month(a.month()+i*c),g&&!d&&bb.updateOffset(a),(h||i)&&(a.minute(e),a.hour(f))}function 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diff --git a/services/chat/public/js/libs/underscore.js b/services/chat/public/js/libs/underscore.js
new file mode 100644
index 0000000000..32ca0c1b14
--- /dev/null
+++ b/services/chat/public/js/libs/underscore.js
@@ -0,0 +1,1227 @@
+// Underscore.js 1.4.4
+// ===================
+
+// > http://underscorejs.org
+// > (c) 2009-2013 Jeremy Ashkenas, DocumentCloud Inc.
+// > Underscore may be freely distributed under the MIT license.
+
+// Baseline setup
+// --------------
+(function() {
+
+  // Establish the root object, `window` in the browser, or `global` on the server.
+  var root = this;
+
+  // Save the previous value of the `_` variable.
+  var previousUnderscore = root._;
+
+  // Establish the object that gets returned to break out of a loop iteration.
+  var breaker = {};
+
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
+
+  // Create quick reference variables for speed access to core prototypes.
+  var push             = ArrayProto.push,
+      slice            = ArrayProto.slice,
+      concat           = ArrayProto.concat,
+      toString         = ObjProto.toString,
+      hasOwnProperty   = ObjProto.hasOwnProperty;
+
+  // All **ECMAScript 5** native function implementations that we hope to use
+  // are declared here.
+  var
+    nativeForEach      = ArrayProto.forEach,
+    nativeMap          = ArrayProto.map,
+    nativeReduce       = ArrayProto.reduce,
+    nativeReduceRight  = ArrayProto.reduceRight,
+    nativeFilter       = ArrayProto.filter,
+    nativeEvery        = ArrayProto.every,
+    nativeSome         = ArrayProto.some,
+    nativeIndexOf      = ArrayProto.indexOf,
+    nativeLastIndexOf  = ArrayProto.lastIndexOf,
+    nativeIsArray      = Array.isArray,
+    nativeKeys         = Object.keys,
+    nativeBind         = FuncProto.bind;
+
+  // Create a safe reference to the Underscore object for use below.
+  var _ = function(obj) {
+    if (obj instanceof _) return obj;
+    if (!(this instanceof _)) return new _(obj);
+    this._wrapped = obj;
+  };
+
+  // Export the Underscore object for **Node.js**, with
+  // backwards-compatibility for the old `require()` API. If we're in
+  // the browser, add `_` as a global object via a string identifier,
+  // for Closure Compiler "advanced" mode.
+  if (typeof exports !== 'undefined') {
+    if (typeof module !== 'undefined' && module.exports) {
+      exports = module.exports = _;
+    }
+    exports._ = _;
+  } else {
+    root._ = _;
+  }
+
+  // Current version.
+  _.VERSION = '1.4.4';
+
+  // Collection Functions
+  // --------------------
+
+  // The cornerstone, an `each` implementation, aka `forEach`.
+  // Handles objects with the built-in `forEach`, arrays, and raw objects.
+  // Delegates to **ECMAScript 5**'s native `forEach` if available.
+  var each = _.each = _.forEach = function(obj, iterator, context) {
+    if (obj == null) return;
+    if (nativeForEach && obj.forEach === nativeForEach) {
+      obj.forEach(iterator, context);
+    } else if (obj.length === +obj.length) {
+      for (var i = 0, l = obj.length; i < l; i++) {
+        if (iterator.call(context, obj[i], i, obj) === breaker) return;
+      }
+    } else {
+      for (var key in obj) {
+        if (_.has(obj, key)) {
+          if (iterator.call(context, obj[key], key, obj) === breaker) return;
+        }
+      }
+    }
+  };
+
+  // Return the results of applying the iterator to each element.
+  // Delegates to **ECMAScript 5**'s native `map` if available.
+  _.map = _.collect = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
+    each(obj, function(value, index, list) {
+      results[results.length] = iterator.call(context, value, index, list);
+    });
+    return results;
+  };
+
+  var reduceError = 'Reduce of empty array with no initial value';
+
+  // **Reduce** builds up a single result from a list of values, aka `inject`,
+  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
+  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduce && obj.reduce === nativeReduce) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
+    }
+    each(obj, function(value, index, list) {
+      if (!initial) {
+        memo = value;
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, value, index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // The right-associative version of reduce, also known as `foldr`.
+  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
+  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+    }
+    var length = obj.length;
+    if (length !== +length) {
+      var keys = _.keys(obj);
+      length = keys.length;
+    }
+    each(obj, function(value, index, list) {
+      index = keys ? keys[--length] : --length;
+      if (!initial) {
+        memo = obj[index];
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, obj[index], index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // Return the first value which passes a truth test. Aliased as `detect`.
+  _.find = _.detect = function(obj, iterator, context) {
+    var result;
+    any(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) {
+        result = value;
+        return true;
+      }
+    });
+    return result;
+  };
+
+  // Return all the elements that pass a truth test.
+  // Delegates to **ECMAScript 5**'s native `filter` if available.
+  // Aliased as `select`.
+  _.filter = _.select = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
+    each(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) results[results.length] = value;
+    });
+    return results;
+  };
+
+  // Return all the elements for which a truth test fails.
+  _.reject = function(obj, iterator, context) {
+    return _.filter(obj, function(value, index, list) {
+      return !iterator.call(context, value, index, list);
+    }, context);
+  };
+
+  // Determine whether all of the elements match a truth test.
+  // Delegates to **ECMAScript 5**'s native `every` if available.
+  // Aliased as `all`.
+  _.every = _.all = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = true;
+    if (obj == null) return result;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
+    each(obj, function(value, index, list) {
+      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if at least one element in the object matches a truth test.
+  // Delegates to **ECMAScript 5**'s native `some` if available.
+  // Aliased as `any`.
+  var any = _.some = _.any = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = false;
+    if (obj == null) return result;
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
+    each(obj, function(value, index, list) {
+      if (result || (result = iterator.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if the array or object contains a given value (using `===`).
+  // Aliased as `include`.
+  _.contains = _.include = function(obj, target) {
+    if (obj == null) return false;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+    return any(obj, function(value) {
+      return value === target;
+    });
+  };
+
+  // Invoke a method (with arguments) on every item in a collection.
+  _.invoke = function(obj, method) {
+    var args = slice.call(arguments, 2);
+    var isFunc = _.isFunction(method);
+    return _.map(obj, function(value) {
+      return (isFunc ? method : value[method]).apply(value, args);
+    });
+  };
+
+  // Convenience version of a common use case of `map`: fetching a property.
+  _.pluck = function(obj, key) {
+    return _.map(obj, function(value){ return value[key]; });
+  };
+
+  // Convenience version of a common use case of `filter`: selecting only objects
+  // containing specific `key:value` pairs.
+  _.where = function(obj, attrs, first) {
+    if (_.isEmpty(attrs)) return first ? null : [];
+    return _[first ? 'find' : 'filter'](obj, function(value) {
+      for (var key in attrs) {
+        if (attrs[key] !== value[key]) return false;
+      }
+      return true;
+    });
+  };
+
+  // Convenience version of a common use case of `find`: getting the first object
+  // containing specific `key:value` pairs.
+  _.findWhere = function(obj, attrs) {
+    return _.where(obj, attrs, true);
+  };
+
+  // Return the maximum element or (element-based computation).
+  // Can't optimize arrays of integers longer than 65,535 elements.
+  // See: https://bugs.webkit.org/show_bug.cgi?id=80797
+  _.max = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.max.apply(Math, obj);
+    }
+    if (!iterator && _.isEmpty(obj)) return -Infinity;
+    var result = {computed : -Infinity, value: -Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed >= result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Return the minimum element (or element-based computation).
+  _.min = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.min.apply(Math, obj);
+    }
+    if (!iterator && _.isEmpty(obj)) return Infinity;
+    var result = {computed : Infinity, value: Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed < result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Shuffle an array.
+  _.shuffle = function(obj) {
+    var rand;
+    var index = 0;
+    var shuffled = [];
+    each(obj, function(value) {
+      rand = _.random(index++);
+      shuffled[index - 1] = shuffled[rand];
+      shuffled[rand] = value;
+    });
+    return shuffled;
+  };
+
+  // An internal function to generate lookup iterators.
+  var lookupIterator = function(value) {
+    return _.isFunction(value) ? value : function(obj){ return obj[value]; };
+  };
+
+  // Sort the object's values by a criterion produced by an iterator.
+  _.sortBy = function(obj, value, context) {
+    var iterator = lookupIterator(value);
+    return _.pluck(_.map(obj, function(value, index, list) {
+      return {
+        value : value,
+        index : index,
+        criteria : iterator.call(context, value, index, list)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria;
+      var b = right.criteria;
+      if (a !== b) {
+        if (a > b || a === void 0) return 1;
+        if (a < b || b === void 0) return -1;
+      }
+      return left.index < right.index ? -1 : 1;
+    }), 'value');
+  };
+
+  // An internal function used for aggregate "group by" operations.
+  var group = function(obj, value, context, behavior) {
+    var result = {};
+    var iterator = lookupIterator(value || _.identity);
+    each(obj, function(value, index) {
+      var key = iterator.call(context, value, index, obj);
+      behavior(result, key, value);
+    });
+    return result;
+  };
+
+  // Groups the object's values by a criterion. Pass either a string attribute
+  // to group by, or a function that returns the criterion.
+  _.groupBy = function(obj, value, context) {
+    return group(obj, value, context, function(result, key, value) {
+      (_.has(result, key) ? result[key] : (result[key] = [])).push(value);
+    });
+  };
+
+  // Counts instances of an object that group by a certain criterion. Pass
+  // either a string attribute to count by, or a function that returns the
+  // criterion.
+  _.countBy = function(obj, value, context) {
+    return group(obj, value, context, function(result, key) {
+      if (!_.has(result, key)) result[key] = 0;
+      result[key]++;
+    });
+  };
+
+  // Use a comparator function to figure out the smallest index at which
+  // an object should be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex = function(array, obj, iterator, context) {
+    iterator = iterator == null ? _.identity : lookupIterator(iterator);
+    var value = iterator.call(context, obj);
+    var low = 0, high = array.length;
+    while (low < high) {
+      var mid = (low + high) >>> 1;
+      iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
+    }
+    return low;
+  };
+
+  // Safely convert anything iterable into a real, live array.
+  _.toArray = function(obj) {
+    if (!obj) return [];
+    if (_.isArray(obj)) return slice.call(obj);
+    if (obj.length === +obj.length) return _.map(obj, _.identity);
+    return _.values(obj);
+  };
+
+  // Return the number of elements in an object.
+  _.size = function(obj) {
+    if (obj == null) return 0;
+    return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
+  };
+
+  // Array Functions
+  // ---------------
+
+  // Get the first element of an array. Passing **n** will return the first N
+  // values in the array. Aliased as `head` and `take`. The **guard** check
+  // allows it to work with `_.map`.
+  _.first = _.head = _.take = function(array, n, guard) {
+    if (array == null) return void 0;
+    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
+  };
+
+  // Returns everything but the last entry of the array. Especially useful on
+  // the arguments object. Passing **n** will return all the values in
+  // the array, excluding the last N. The **guard** check allows it to work with
+  // `_.map`.
+  _.initial = function(array, n, guard) {
+    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
+  };
+
+  // Get the last element of an array. Passing **n** will return the last N
+  // values in the array. The **guard** check allows it to work with `_.map`.
+  _.last = function(array, n, guard) {
+    if (array == null) return void 0;
+    if ((n != null) && !guard) {
+      return slice.call(array, Math.max(array.length - n, 0));
+    } else {
+      return array[array.length - 1];
+    }
+  };
+
+  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
+  // Especially useful on the arguments object. Passing an **n** will return
+  // the rest N values in the array. The **guard**
+  // check allows it to work with `_.map`.
+  _.rest = _.tail = _.drop = function(array, n, guard) {
+    return slice.call(array, (n == null) || guard ? 1 : n);
+  };
+
+  // Trim out all falsy values from an array.
+  _.compact = function(array) {
+    return _.filter(array, _.identity);
+  };
+
+  // Internal implementation of a recursive `flatten` function.
+  var flatten = function(input, shallow, output) {
+    each(input, function(value) {
+      if (_.isArray(value)) {
+        shallow ? push.apply(output, value) : flatten(value, shallow, output);
+      } else {
+        output.push(value);
+      }
+    });
+    return output;
+  };
+
+  // Return a completely flattened version of an array.
+  _.flatten = function(array, shallow) {
+    return flatten(array, shallow, []);
+  };
+
+  // Return a version of the array that does not contain the specified value(s).
+  _.without = function(array) {
+    return _.difference(array, slice.call(arguments, 1));
+  };
+
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  // Aliased as `unique`.
+  _.uniq = _.unique = function(array, isSorted, iterator, context) {
+    if (_.isFunction(isSorted)) {
+      context = iterator;
+      iterator = isSorted;
+      isSorted = false;
+    }
+    var initial = iterator ? _.map(array, iterator, context) : array;
+    var results = [];
+    var seen = [];
+    each(initial, function(value, index) {
+      if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) {
+        seen.push(value);
+        results.push(array[index]);
+      }
+    });
+    return results;
+  };
+
+  // Produce an array that contains the union: each distinct element from all of
+  // the passed-in arrays.
+  _.union = function() {
+    return _.uniq(concat.apply(ArrayProto, arguments));
+  };
+
+  // Produce an array that contains every item shared between all the
+  // passed-in arrays.
+  _.intersection = function(array) {
+    var rest = slice.call(arguments, 1);
+    return _.filter(_.uniq(array), function(item) {
+      return _.every(rest, function(other) {
+        return _.indexOf(other, item) >= 0;
+      });
+    });
+  };
+
+  // Take the difference between one array and a number of other arrays.
+  // Only the elements present in just the first array will remain.
+  _.difference = function(array) {
+    var rest = concat.apply(ArrayProto, slice.call(arguments, 1));
+    return _.filter(array, function(value){ return !_.contains(rest, value); });
+  };
+
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  _.zip = function() {
+    var args = slice.call(arguments);
+    var length = _.max(_.pluck(args, 'length'));
+    var results = new Array(length);
+    for (var i = 0; i < length; i++) {
+      results[i] = _.pluck(args, "" + i);
+    }
+    return results;
+  };
+
+  // Converts lists into objects. Pass either a single array of `[key, value]`
+  // pairs, or two parallel arrays of the same length -- one of keys, and one of
+  // the corresponding values.
+  _.object = function(list, values) {
+    if (list == null) return {};
+    var result = {};
+    for (var i = 0, l = list.length; i < l; i++) {
+      if (values) {
+        result[list[i]] = values[i];
+      } else {
+        result[list[i][0]] = list[i][1];
+      }
+    }
+    return result;
+  };
+
+  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
+  // we need this function. Return the position of the first occurrence of an
+  // item in an array, or -1 if the item is not included in the array.
+  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
+  // If the array is large and already in sort order, pass `true`
+  // for **isSorted** to use binary search.
+  _.indexOf = function(array, item, isSorted) {
+    if (array == null) return -1;
+    var i = 0, l = array.length;
+    if (isSorted) {
+      if (typeof isSorted == 'number') {
+        i = (isSorted < 0 ? Math.max(0, l + isSorted) : isSorted);
+      } else {
+        i = _.sortedIndex(array, item);
+        return array[i] === item ? i : -1;
+      }
+    }
+    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
+    for (; i < l; i++) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
+  _.lastIndexOf = function(array, item, from) {
+    if (array == null) return -1;
+    var hasIndex = from != null;
+    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
+      return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
+    }
+    var i = (hasIndex ? from : array.length);
+    while (i--) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python `range()` function. See
+  // [the Python documentation](http://docs.python.org/library/functions.html#range).
+  _.range = function(start, stop, step) {
+    if (arguments.length <= 1) {
+      stop = start || 0;
+      start = 0;
+    }
+    step = arguments[2] || 1;
+
+    var len = Math.max(Math.ceil((stop - start) / step), 0);
+    var idx = 0;
+    var range = new Array(len);
+
+    while(idx < len) {
+      range[idx++] = start;
+      start += step;
+    }
+
+    return range;
+  };
+
+  // Function (ahem) Functions
+  // ------------------
+
+  // Create a function bound to a given object (assigning `this`, and arguments,
+  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
+  // available.
+  _.bind = function(func, context) {
+    if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
+    var args = slice.call(arguments, 2);
+    return function() {
+      return func.apply(context, args.concat(slice.call(arguments)));
+    };
+  };
+
+  // Partially apply a function by creating a version that has had some of its
+  // arguments pre-filled, without changing its dynamic `this` context.
+  _.partial = function(func) {
+    var args = slice.call(arguments, 1);
+    return function() {
+      return func.apply(this, args.concat(slice.call(arguments)));
+    };
+  };
+
+  // Bind all of an object's methods to that object. Useful for ensuring that
+  // all callbacks defined on an object belong to it.
+  _.bindAll = function(obj) {
+    var funcs = slice.call(arguments, 1);
+    if (funcs.length === 0) funcs = _.functions(obj);
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    return obj;
+  };
+
+  // Memoize an expensive function by storing its results.
+  _.memoize = function(func, hasher) {
+    var memo = {};
+    hasher || (hasher = _.identity);
+    return function() {
+      var key = hasher.apply(this, arguments);
+      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
+    };
+  };
+
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  _.delay = function(func, wait) {
+    var args = slice.call(arguments, 2);
+    return setTimeout(function(){ return func.apply(null, args); }, wait);
+  };
+
+  // Defers a function, scheduling it to run after the current call stack has
+  // cleared.
+  _.defer = function(func) {
+    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
+  };
+
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    var context, args, timeout, result;
+    var previous = 0;
+    var later = function() {
+      previous = new Date;
+      timeout = null;
+      result = func.apply(context, args);
+    };
+    return function() {
+      var now = new Date;
+      var remaining = wait - (now - previous);
+      context = this;
+      args = arguments;
+      if (remaining <= 0) {
+        clearTimeout(timeout);
+        timeout = null;
+        previous = now;
+        result = func.apply(context, args);
+      } else if (!timeout) {
+        timeout = setTimeout(later, remaining);
+      }
+      return result;
+    };
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds. If `immediate` is passed, trigger the function on the
+  // leading edge, instead of the trailing.
+  _.debounce = function(func, wait, immediate) {
+    var timeout, result;
+    return function() {
+      var context = this, args = arguments;
+      var later = function() {
+        timeout = null;
+        if (!immediate) result = func.apply(context, args);
+      };
+      var callNow = immediate && !timeout;
+      clearTimeout(timeout);
+      timeout = setTimeout(later, wait);
+      if (callNow) result = func.apply(context, args);
+      return result;
+    };
+  };
+
+  // Returns a function that will be executed at most one time, no matter how
+  // often you call it. Useful for lazy initialization.
+  _.once = function(func) {
+    var ran = false, memo;
+    return function() {
+      if (ran) return memo;
+      ran = true;
+      memo = func.apply(this, arguments);
+      func = null;
+      return memo;
+    };
+  };
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
+  // conditionally execute the original function.
+  _.wrap = function(func, wrapper) {
+    return function() {
+      var args = [func];
+      push.apply(args, arguments);
+      return wrapper.apply(this, args);
+    };
+  };
+
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var funcs = arguments;
+    return function() {
+      var args = arguments;
+      for (var i = funcs.length - 1; i >= 0; i--) {
+        args = [funcs[i].apply(this, args)];
+      }
+      return args[0];
+    };
+  };
+
+  // Returns a function that will only be executed after being called N times.
+  _.after = function(times, func) {
+    if (times <= 0) return func();
+    return function() {
+      if (--times < 1) {
+        return func.apply(this, arguments);
+      }
+    };
+  };
+
+  // Object Functions
+  // ----------------
+
+  // Retrieve the names of an object's properties.
+  // Delegates to **ECMAScript 5**'s native `Object.keys`
+  _.keys = nativeKeys || function(obj) {
+    if (obj !== Object(obj)) throw new TypeError('Invalid object');
+    var keys = [];
+    for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
+    return keys;
+  };
+
+  // Retrieve the values of an object's properties.
+  _.values = function(obj) {
+    var values = [];
+    for (var key in obj) if (_.has(obj, key)) values.push(obj[key]);
+    return values;
+  };
+
+  // Convert an object into a list of `[key, value]` pairs.
+  _.pairs = function(obj) {
+    var pairs = [];
+    for (var key in obj) if (_.has(obj, key)) pairs.push([key, obj[key]]);
+    return pairs;
+  };
+
+  // Invert the keys and values of an object. The values must be serializable.
+  _.invert = function(obj) {
+    var result = {};
+    for (var key in obj) if (_.has(obj, key)) result[obj[key]] = key;
+    return result;
+  };
+
+  // Return a sorted list of the function names available on the object.
+  // Aliased as `methods`
+  _.functions = _.methods = function(obj) {
+    var names = [];
+    for (var key in obj) {
+      if (_.isFunction(obj[key])) names.push(key);
+    }
+    return names.sort();
+  };
+
+  // Extend a given object with all the properties in passed-in object(s).
+  _.extend = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Return a copy of the object only containing the whitelisted properties.
+  _.pick = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    each(keys, function(key) {
+      if (key in obj) copy[key] = obj[key];
+    });
+    return copy;
+  };
+
+   // Return a copy of the object without the blacklisted properties.
+  _.omit = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    for (var key in obj) {
+      if (!_.contains(keys, key)) copy[key] = obj[key];
+    }
+    return copy;
+  };
+
+  // Fill in a given object with default properties.
+  _.defaults = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          if (obj[prop] == null) obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Create a (shallow-cloned) duplicate of an object.
+  _.clone = function(obj) {
+    if (!_.isObject(obj)) return obj;
+    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
+  };
+
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in
+  // order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
+  // Internal recursive comparison function for `isEqual`.
+  var eq = function(a, b, aStack, bStack) {
+    // Identical objects are equal. `0 === -0`, but they aren't identical.
+    // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
+    if (a === b) return a !== 0 || 1 / a == 1 / b;
+    // A strict comparison is necessary because `null == undefined`.
+    if (a == null || b == null) return a === b;
+    // Unwrap any wrapped objects.
+    if (a instanceof _) a = a._wrapped;
+    if (b instanceof _) b = b._wrapped;
+    // Compare `[[Class]]` names.
+    var className = toString.call(a);
+    if (className != toString.call(b)) return false;
+    switch (className) {
+      // Strings, numbers, dates, and booleans are compared by value.
+      case '[object String]':
+        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+        // equivalent to `new String("5")`.
+        return a == String(b);
+      case '[object Number]':
+        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
+        // other numeric values.
+        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
+      case '[object Date]':
+      case '[object Boolean]':
+        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+        // millisecond representations. Note that invalid dates with millisecond representations
+        // of `NaN` are not equivalent.
+        return +a == +b;
+      // RegExps are compared by their source patterns and flags.
+      case '[object RegExp]':
+        return a.source == b.source &&
+               a.global == b.global &&
+               a.multiline == b.multiline &&
+               a.ignoreCase == b.ignoreCase;
+    }
+    if (typeof a != 'object' || typeof b != 'object') return false;
+    // Assume equality for cyclic structures. The algorithm for detecting cyclic
+    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+    var length = aStack.length;
+    while (length--) {
+      // Linear search. Performance is inversely proportional to the number of
+      // unique nested structures.
+      if (aStack[length] == a) return bStack[length] == b;
+    }
+    // Add the first object to the stack of traversed objects.
+    aStack.push(a);
+    bStack.push(b);
+    var size = 0, result = true;
+    // Recursively compare objects and arrays.
+    if (className == '[object Array]') {
+      // Compare array lengths to determine if a deep comparison is necessary.
+      size = a.length;
+      result = size == b.length;
+      if (result) {
+        // Deep compare the contents, ignoring non-numeric properties.
+        while (size--) {
+          if (!(result = eq(a[size], b[size], aStack, bStack))) break;
+        }
+      }
+    } else {
+      // Objects with different constructors are not equivalent, but `Object`s
+      // from different frames are.
+      var aCtor = a.constructor, bCtor = b.constructor;
+      if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
+                               _.isFunction(bCtor) && (bCtor instanceof bCtor))) {
+        return false;
+      }
+      // Deep compare objects.
+      for (var key in a) {
+        if (_.has(a, key)) {
+          // Count the expected number of properties.
+          size++;
+          // Deep compare each member.
+          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
+        }
+      }
+      // Ensure that both objects contain the same number of properties.
+      if (result) {
+        for (key in b) {
+          if (_.has(b, key) && !(size--)) break;
+        }
+        result = !size;
+      }
+    }
+    // Remove the first object from the stack of traversed objects.
+    aStack.pop();
+    bStack.pop();
+    return result;
+  };
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    return eq(a, b, [], []);
+  };
+
+  // Is a given array, string, or object empty?
+  // An "empty" object has no enumerable own-properties.
+  _.isEmpty = function(obj) {
+    if (obj == null) return true;
+    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
+    for (var key in obj) if (_.has(obj, key)) return false;
+    return true;
+  };
+
+  // Is a given value a DOM element?
+  _.isElement = function(obj) {
+    return !!(obj && obj.nodeType === 1);
+  };
+
+  // Is a given value an array?
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = nativeIsArray || function(obj) {
+    return toString.call(obj) == '[object Array]';
+  };
+
+  // Is a given variable an object?
+  _.isObject = function(obj) {
+    return obj === Object(obj);
+  };
+
+  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
+  each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
+    _['is' + name] = function(obj) {
+      return toString.call(obj) == '[object ' + name + ']';
+    };
+  });
+
+  // Define a fallback version of the method in browsers (ahem, IE), where
+  // there isn't any inspectable "Arguments" type.
+  if (!_.isArguments(arguments)) {
+    _.isArguments = function(obj) {
+      return !!(obj && _.has(obj, 'callee'));
+    };
+  }
+
+  // Optimize `isFunction` if appropriate.
+  if (typeof (/./) !== 'function') {
+    _.isFunction = function(obj) {
+      return typeof obj === 'function';
+    };
+  }
+
+  // Is a given object a finite number?
+  _.isFinite = function(obj) {
+    return isFinite(obj) && !isNaN(parseFloat(obj));
+  };
+
+  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
+  _.isNaN = function(obj) {
+    return _.isNumber(obj) && obj != +obj;
+  };
+
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
+  // Is a given variable undefined?
+  _.isUndefined = function(obj) {
+    return obj === void 0;
+  };
+
+  // Shortcut function for checking if an object has a given property directly
+  // on itself (in other words, not on a prototype).
+  _.has = function(obj, key) {
+    return hasOwnProperty.call(obj, key);
+  };
+
+  // Utility Functions
+  // -----------------
+
+  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  _.noConflict = function() {
+    root._ = previousUnderscore;
+    return this;
+  };
+
+  // Keep the identity function around for default iterators.
+  _.identity = function(value) {
+    return value;
+  };
+
+  // Run a function **n** times.
+  _.times = function(n, iterator, context) {
+    var accum = Array(n);
+    for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
+    return accum;
+  };
+
+  // Return a random integer between min and max (inclusive).
+  _.random = function(min, max) {
+    if (max == null) {
+      max = min;
+      min = 0;
+    }
+    return min + Math.floor(Math.random() * (max - min + 1));
+  };
+
+  // List of HTML entities for escaping.
+  var entityMap = {
+    escape: {
+      '&': '&amp;',
+      '<': '&lt;',
+      '>': '&gt;',
+      '"': '&quot;',
+      "'": '&#x27;',
+      '/': '&#x2F;'
+    }
+  };
+  entityMap.unescape = _.invert(entityMap.escape);
+
+  // Regexes containing the keys and values listed immediately above.
+  var entityRegexes = {
+    escape:   new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
+    unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
+  };
+
+  // Functions for escaping and unescaping strings to/from HTML interpolation.
+  _.each(['escape', 'unescape'], function(method) {
+    _[method] = function(string) {
+      if (string == null) return '';
+      return ('' + string).replace(entityRegexes[method], function(match) {
+        return entityMap[method][match];
+      });
+    };
+  });
+
+  // If the value of the named property is a function then invoke it;
+  // otherwise, return it.
+  _.result = function(object, property) {
+    if (object == null) return null;
+    var value = object[property];
+    return _.isFunction(value) ? value.call(object) : value;
+  };
+
+  // Add your own custom functions to the Underscore object.
+  _.mixin = function(obj) {
+    each(_.functions(obj), function(name){
+      var func = _[name] = obj[name];
+      _.prototype[name] = function() {
+        var args = [this._wrapped];
+        push.apply(args, arguments);
+        return result.call(this, func.apply(_, args));
+      };
+    });
+  };
+
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  var idCounter = 0;
+  _.uniqueId = function(prefix) {
+    var id = ++idCounter + '';
+    return prefix ? prefix + id : id;
+  };
+
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    evaluate    : /<%([\s\S]+?)%>/g,
+    interpolate : /<%=([\s\S]+?)%>/g,
+    escape      : /<%-([\s\S]+?)%>/g
+  };
+
+  // When customizing `templateSettings`, if you don't want to define an
+  // interpolation, evaluation or escaping regex, we need one that is
+  // guaranteed not to match.
+  var noMatch = /(.)^/;
+
+  // Certain characters need to be escaped so that they can be put into a
+  // string literal.
+  var escapes = {
+    "'":      "'",
+    '\\':     '\\',
+    '\r':     'r',
+    '\n':     'n',
+    '\t':     't',
+    '\u2028': 'u2028',
+    '\u2029': 'u2029'
+  };
+
+  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
+
+  // JavaScript micro-templating, similar to John Resig's implementation.
+  // Underscore templating handles arbitrary delimiters, preserves whitespace,
+  // and correctly escapes quotes within interpolated code.
+  _.template = function(text, data, settings) {
+    var render;
+    settings = _.defaults({}, settings, _.templateSettings);
+
+    // Combine delimiters into one regular expression via alternation.
+    var matcher = new RegExp([
+      (settings.escape || noMatch).source,
+      (settings.interpolate || noMatch).source,
+      (settings.evaluate || noMatch).source
+    ].join('|') + '|$', 'g');
+
+    // Compile the template source, escaping string literals appropriately.
+    var index = 0;
+    var source = "__p+='";
+    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
+      source += text.slice(index, offset)
+        .replace(escaper, function(match) { return '\\' + escapes[match]; });
+
+      if (escape) {
+        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
+      }
+      if (interpolate) {
+        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
+      }
+      if (evaluate) {
+        source += "';\n" + evaluate + "\n__p+='";
+      }
+      index = offset + match.length;
+      return match;
+    });
+    source += "';\n";
+
+    // If a variable is not specified, place data values in local scope.
+    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
+
+    source = "var __t,__p='',__j=Array.prototype.join," +
+      "print=function(){__p+=__j.call(arguments,'');};\n" +
+      source + "return __p;\n";
+
+    try {
+      render = new Function(settings.variable || 'obj', '_', source);
+    } catch (e) {
+      e.source = source;
+      throw e;
+    }
+
+    if (data) return render(data, _);
+    var template = function(data) {
+      return render.call(this, data, _);
+    };
+
+    // Provide the compiled function source as a convenience for precompilation.
+    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';
+
+    return template;
+  };
+
+  // Add a "chain" function, which will delegate to the wrapper.
+  _.chain = function(obj) {
+    return _(obj).chain();
+  };
+
+  // OOP
+  // ---------------
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj) {
+    return this._chain ? _(obj).chain() : obj;
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  _.mixin(_);
+
+  // Add all mutator Array functions to the wrapper.
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      var obj = this._wrapped;
+      method.apply(obj, arguments);
+      if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
+      return result.call(this, obj);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      return result.call(this, method.apply(this._wrapped, arguments));
+    };
+  });
+
+  _.extend(_.prototype, {
+
+    // Start chaining a wrapped Underscore object.
+    chain: function() {
+      this._chain = true;
+      return this;
+    },
+
+    // Extracts the result from a wrapped and chained object.
+    value: function() {
+      return this._wrapped;
+    }
+
+  });
+
+}).call(this);
diff --git a/services/chat/public/js/r.js b/services/chat/public/js/r.js
new file mode 100644
index 0000000000..3dd1a9b87e
--- /dev/null
+++ b/services/chat/public/js/r.js
@@ -0,0 +1,26058 @@
+/**
+ * @license r.js 2.1.9 Copyright (c) 2010-2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*
+ * This is a bootstrap script to allow running RequireJS in the command line
+ * in either a Java/Rhino or Node environment. It is modified by the top-level
+ * dist.js file to inject other files to completely enable this file. It is
+ * the shell of the r.js file.
+ */
+
+/*jslint evil: true, nomen: true, sloppy: true */
+/*global readFile: true, process: false, Packages: false, print: false,
+console: false, java: false, module: false, requirejsVars, navigator,
+document, importScripts, self, location, Components, FileUtils */
+
+var requirejs, require, define, xpcUtil;
+(function (console, args, readFileFunc) {
+    var fileName, env, fs, vm, path, exec, rhinoContext, dir, nodeRequire,
+        nodeDefine, exists, reqMain, loadedOptimizedLib, existsForNode, Cc, Ci,
+        version = '2.1.9',
+        jsSuffixRegExp = /\.js$/,
+        commandOption = '',
+        useLibLoaded = {},
+        //Used by jslib/rhino/args.js
+        rhinoArgs = args,
+        //Used by jslib/xpconnect/args.js
+        xpconnectArgs = args,
+        readFile = typeof readFileFunc !== 'undefined' ? readFileFunc : null;
+
+    function showHelp() {
+        console.log('See https://github.com/jrburke/r.js for usage.');
+    }
+
+    if ((typeof navigator !== 'undefined' && typeof document !== 'undefined') ||
+            (typeof importScripts !== 'undefined' && typeof self !== 'undefined')) {
+        env = 'browser';
+
+        readFile = function (path) {
+            return fs.readFileSync(path, 'utf8');
+        };
+
+        exec = function (string) {
+            return eval(string);
+        };
+
+        exists = function () {
+            console.log('x.js exists not applicable in browser env');
+            return false;
+        };
+
+    } else if (typeof Packages !== 'undefined') {
+        env = 'rhino';
+
+        fileName = args[0];
+
+        if (fileName && fileName.indexOf('-') === 0) {
+            commandOption = fileName.substring(1);
+            fileName = args[1];
+        }
+
+        //Set up execution context.
+        rhinoContext = Packages.org.mozilla.javascript.ContextFactory.getGlobal().enterContext();
+
+        exec = function (string, name) {
+            return rhinoContext.evaluateString(this, string, name, 0, null);
+        };
+
+        exists = function (fileName) {
+            return (new java.io.File(fileName)).exists();
+        };
+
+        //Define a console.log for easier logging. Don't
+        //get fancy though.
+        if (typeof console === 'undefined') {
+            console = {
+                log: function () {
+                    print.apply(undefined, arguments);
+                }
+            };
+        }
+    } else if (typeof process !== 'undefined' && process.versions && !!process.versions.node) {
+        env = 'node';
+
+        //Get the fs module via Node's require before it
+        //gets replaced. Used in require/node.js
+        fs = require('fs');
+        vm = require('vm');
+        path = require('path');
+        //In Node 0.7+ existsSync is on fs.
+        existsForNode = fs.existsSync || path.existsSync;
+
+        nodeRequire = require;
+        nodeDefine = define;
+        reqMain = require.main;
+
+        //Temporarily hide require and define to allow require.js to define
+        //them.
+        require = undefined;
+        define = undefined;
+
+        readFile = function (path) {
+            return fs.readFileSync(path, 'utf8');
+        };
+
+        exec = function (string, name) {
+            return vm.runInThisContext(this.requirejsVars.require.makeNodeWrapper(string),
+                                       name ? fs.realpathSync(name) : '');
+        };
+
+        exists = function (fileName) {
+            return existsForNode(fileName);
+        };
+
+
+        fileName = process.argv[2];
+
+        if (fileName && fileName.indexOf('-') === 0) {
+            commandOption = fileName.substring(1);
+            fileName = process.argv[3];
+        }
+    } else if (typeof Components !== 'undefined' && Components.classes && Components.interfaces) {
+        env = 'xpconnect';
+
+        Components.utils['import']('resource://gre/modules/FileUtils.jsm');
+        Cc = Components.classes;
+        Ci = Components.interfaces;
+
+        fileName = args[0];
+
+        if (fileName && fileName.indexOf('-') === 0) {
+            commandOption = fileName.substring(1);
+            fileName = args[1];
+        }
+
+        xpcUtil = {
+            isWindows: ('@mozilla.org/windows-registry-key;1' in Cc),
+            cwd: function () {
+                return FileUtils.getFile("CurWorkD", []).path;
+            },
+
+            //Remove . and .. from paths, normalize on front slashes
+            normalize: function (path) {
+                //There has to be an easier way to do this.
+                var i, part, ary,
+                    firstChar = path.charAt(0);
+
+                if (firstChar !== '/' &&
+                        firstChar !== '\\' &&
+                        path.indexOf(':') === -1) {
+                    //A relative path. Use the current working directory.
+                    path = xpcUtil.cwd() + '/' + path;
+                }
+
+                ary = path.replace(/\\/g, '/').split('/');
+
+                for (i = 0; i < ary.length; i += 1) {
+                    part = ary[i];
+                    if (part === '.') {
+                        ary.splice(i, 1);
+                        i -= 1;
+                    } else if (part === '..') {
+                        ary.splice(i - 1, 2);
+                        i -= 2;
+                    }
+                }
+                return ary.join('/');
+            },
+
+            xpfile: function (path) {
+                var fullPath;
+                try {
+                    fullPath = xpcUtil.normalize(path);
+                    if (xpcUtil.isWindows) {
+                        fullPath = fullPath.replace(/\//g, '\\');
+                    }
+                    return new FileUtils.File(fullPath);
+                } catch (e) {
+                    throw new Error((fullPath || path) + ' failed: ' + e);
+                }
+            },
+
+            readFile: function (/*String*/path, /*String?*/encoding) {
+                //A file read function that can deal with BOMs
+                encoding = encoding || "utf-8";
+
+                var inStream, convertStream,
+                    readData = {},
+                    fileObj = xpcUtil.xpfile(path);
+
+                //XPCOM, you so crazy
+                try {
+                    inStream = Cc['@mozilla.org/network/file-input-stream;1']
+                               .createInstance(Ci.nsIFileInputStream);
+                    inStream.init(fileObj, 1, 0, false);
+
+                    convertStream = Cc['@mozilla.org/intl/converter-input-stream;1']
+                                    .createInstance(Ci.nsIConverterInputStream);
+                    convertStream.init(inStream, encoding, inStream.available(),
+                    Ci.nsIConverterInputStream.DEFAULT_REPLACEMENT_CHARACTER);
+
+                    convertStream.readString(inStream.available(), readData);
+                    return readData.value;
+                } catch (e) {
+                    throw new Error((fileObj && fileObj.path || '') + ': ' + e);
+                } finally {
+                    if (convertStream) {
+                        convertStream.close();
+                    }
+                    if (inStream) {
+                        inStream.close();
+                    }
+                }
+            }
+        };
+
+        readFile = xpcUtil.readFile;
+
+        exec = function (string) {
+            return eval(string);
+        };
+
+        exists = function (fileName) {
+            return xpcUtil.xpfile(fileName).exists();
+        };
+
+        //Define a console.log for easier logging. Don't
+        //get fancy though.
+        if (typeof console === 'undefined') {
+            console = {
+                log: function () {
+                    print.apply(undefined, arguments);
+                }
+            };
+        }
+    }
+
+    /** vim: et:ts=4:sw=4:sts=4
+ * @license RequireJS 2.1.9 Copyright (c) 2010-2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+//Not using strict: uneven strict support in browsers, #392, and causes
+//problems with requirejs.exec()/transpiler plugins that may not be strict.
+/*jslint regexp: true, nomen: true, sloppy: true */
+/*global window, navigator, document, importScripts, setTimeout, opera */
+
+
+(function (global) {
+    var req, s, head, baseElement, dataMain, src,
+        interactiveScript, currentlyAddingScript, mainScript, subPath,
+        version = '2.1.9',
+        commentRegExp = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg,
+        cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g,
+        jsSuffixRegExp = /\.js$/,
+        currDirRegExp = /^\.\//,
+        op = Object.prototype,
+        ostring = op.toString,
+        hasOwn = op.hasOwnProperty,
+        ap = Array.prototype,
+        apsp = ap.splice,
+        isBrowser = !!(typeof window !== 'undefined' && typeof navigator !== 'undefined' && window.document),
+        isWebWorker = !isBrowser && typeof importScripts !== 'undefined',
+        //PS3 indicates loaded and complete, but need to wait for complete
+        //specifically. Sequence is 'loading', 'loaded', execution,
+        // then 'complete'. The UA check is unfortunate, but not sure how
+        //to feature test w/o causing perf issues.
+        readyRegExp = isBrowser && navigator.platform === 'PLAYSTATION 3' ?
+                      /^complete$/ : /^(complete|loaded)$/,
+        defContextName = '_',
+        //Oh the tragedy, detecting opera. See the usage of isOpera for reason.
+        isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]',
+        contexts = {},
+        cfg = {},
+        globalDefQueue = [],
+        useInteractive = false;
+
+    function isFunction(it) {
+        return ostring.call(it) === '[object Function]';
+    }
+
+    function isArray(it) {
+        return ostring.call(it) === '[object Array]';
+    }
+
+    /**
+     * Helper function for iterating over an array. If the func returns
+     * a true value, it will break out of the loop.
+     */
+    function each(ary, func) {
+        if (ary) {
+            var i;
+            for (i = 0; i < ary.length; i += 1) {
+                if (ary[i] && func(ary[i], i, ary)) {
+                    break;
+                }
+            }
+        }
+    }
+
+    /**
+     * Helper function for iterating over an array backwards. If the func
+     * returns a true value, it will break out of the loop.
+     */
+    function eachReverse(ary, func) {
+        if (ary) {
+            var i;
+            for (i = ary.length - 1; i > -1; i -= 1) {
+                if (ary[i] && func(ary[i], i, ary)) {
+                    break;
+                }
+            }
+        }
+    }
+
+    function hasProp(obj, prop) {
+        return hasOwn.call(obj, prop);
+    }
+
+    function getOwn(obj, prop) {
+        return hasProp(obj, prop) && obj[prop];
+    }
+
+    /**
+     * Cycles over properties in an object and calls a function for each
+     * property value. If the function returns a truthy value, then the
+     * iteration is stopped.
+     */
+    function eachProp(obj, func) {
+        var prop;
+        for (prop in obj) {
+            if (hasProp(obj, prop)) {
+                if (func(obj[prop], prop)) {
+                    break;
+                }
+            }
+        }
+    }
+
+    /**
+     * Simple function to mix in properties from source into target,
+     * but only if target does not already have a property of the same name.
+     */
+    function mixin(target, source, force, deepStringMixin) {
+        if (source) {
+            eachProp(source, function (value, prop) {
+                if (force || !hasProp(target, prop)) {
+                    if (deepStringMixin && typeof value !== 'string') {
+                        if (!target[prop]) {
+                            target[prop] = {};
+                        }
+                        mixin(target[prop], value, force, deepStringMixin);
+                    } else {
+                        target[prop] = value;
+                    }
+                }
+            });
+        }
+        return target;
+    }
+
+    //Similar to Function.prototype.bind, but the 'this' object is specified
+    //first, since it is easier to read/figure out what 'this' will be.
+    function bind(obj, fn) {
+        return function () {
+            return fn.apply(obj, arguments);
+        };
+    }
+
+    function scripts() {
+        return document.getElementsByTagName('script');
+    }
+
+    function defaultOnError(err) {
+        throw err;
+    }
+
+    //Allow getting a global that expressed in
+    //dot notation, like 'a.b.c'.
+    function getGlobal(value) {
+        if (!value) {
+            return value;
+        }
+        var g = global;
+        each(value.split('.'), function (part) {
+            g = g[part];
+        });
+        return g;
+    }
+
+    /**
+     * Constructs an error with a pointer to an URL with more information.
+     * @param {String} id the error ID that maps to an ID on a web page.
+     * @param {String} message human readable error.
+     * @param {Error} [err] the original error, if there is one.
+     *
+     * @returns {Error}
+     */
+    function makeError(id, msg, err, requireModules) {
+        var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id);
+        e.requireType = id;
+        e.requireModules = requireModules;
+        if (err) {
+            e.originalError = err;
+        }
+        return e;
+    }
+
+    if (typeof define !== 'undefined') {
+        //If a define is already in play via another AMD loader,
+        //do not overwrite.
+        return;
+    }
+
+    if (typeof requirejs !== 'undefined') {
+        if (isFunction(requirejs)) {
+            //Do not overwrite and existing requirejs instance.
+            return;
+        }
+        cfg = requirejs;
+        requirejs = undefined;
+    }
+
+    //Allow for a require config object
+    if (typeof require !== 'undefined' && !isFunction(require)) {
+        //assume it is a config object.
+        cfg = require;
+        require = undefined;
+    }
+
+    function newContext(contextName) {
+        var inCheckLoaded, Module, context, handlers,
+            checkLoadedTimeoutId,
+            config = {
+                //Defaults. Do not set a default for map
+                //config to speed up normalize(), which
+                //will run faster if there is no default.
+                waitSeconds: 7,
+                baseUrl: './',
+                paths: {},
+                pkgs: {},
+                shim: {},
+                config: {}
+            },
+            registry = {},
+            //registry of just enabled modules, to speed
+            //cycle breaking code when lots of modules
+            //are registered, but not activated.
+            enabledRegistry = {},
+            undefEvents = {},
+            defQueue = [],
+            defined = {},
+            urlFetched = {},
+            requireCounter = 1,
+            unnormalizedCounter = 1;
+
+        /**
+         * Trims the . and .. from an array of path segments.
+         * It will keep a leading path segment if a .. will become
+         * the first path segment, to help with module name lookups,
+         * which act like paths, but can be remapped. But the end result,
+         * all paths that use this function should look normalized.
+         * NOTE: this method MODIFIES the input array.
+         * @param {Array} ary the array of path segments.
+         */
+        function trimDots(ary) {
+            var i, part;
+            for (i = 0; ary[i]; i += 1) {
+                part = ary[i];
+                if (part === '.') {
+                    ary.splice(i, 1);
+                    i -= 1;
+                } else if (part === '..') {
+                    if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
+                        //End of the line. Keep at least one non-dot
+                        //path segment at the front so it can be mapped
+                        //correctly to disk. Otherwise, there is likely
+                        //no path mapping for a path starting with '..'.
+                        //This can still fail, but catches the most reasonable
+                        //uses of ..
+                        break;
+                    } else if (i > 0) {
+                        ary.splice(i - 1, 2);
+                        i -= 2;
+                    }
+                }
+            }
+        }
+
+        /**
+         * Given a relative module name, like ./something, normalize it to
+         * a real name that can be mapped to a path.
+         * @param {String} name the relative name
+         * @param {String} baseName a real name that the name arg is relative
+         * to.
+         * @param {Boolean} applyMap apply the map config to the value. Should
+         * only be done if this normalization is for a dependency ID.
+         * @returns {String} normalized name
+         */
+        function normalize(name, baseName, applyMap) {
+            var pkgName, pkgConfig, mapValue, nameParts, i, j, nameSegment,
+                foundMap, foundI, foundStarMap, starI,
+                baseParts = baseName && baseName.split('/'),
+                normalizedBaseParts = baseParts,
+                map = config.map,
+                starMap = map && map['*'];
+
+            //Adjust any relative paths.
+            if (name && name.charAt(0) === '.') {
+                //If have a base name, try to normalize against it,
+                //otherwise, assume it is a top-level require that will
+                //be relative to baseUrl in the end.
+                if (baseName) {
+                    if (getOwn(config.pkgs, baseName)) {
+                        //If the baseName is a package name, then just treat it as one
+                        //name to concat the name with.
+                        normalizedBaseParts = baseParts = [baseName];
+                    } else {
+                        //Convert baseName to array, and lop off the last part,
+                        //so that . matches that 'directory' and not name of the baseName's
+                        //module. For instance, baseName of 'one/two/three', maps to
+                        //'one/two/three.js', but we want the directory, 'one/two' for
+                        //this normalization.
+                        normalizedBaseParts = baseParts.slice(0, baseParts.length - 1);
+                    }
+
+                    name = normalizedBaseParts.concat(name.split('/'));
+                    trimDots(name);
+
+                    //Some use of packages may use a . path to reference the
+                    //'main' module name, so normalize for that.
+                    pkgConfig = getOwn(config.pkgs, (pkgName = name[0]));
+                    name = name.join('/');
+                    if (pkgConfig && name === pkgName + '/' + pkgConfig.main) {
+                        name = pkgName;
+                    }
+                } else if (name.indexOf('./') === 0) {
+                    // No baseName, so this is ID is resolved relative
+                    // to baseUrl, pull off the leading dot.
+                    name = name.substring(2);
+                }
+            }
+
+            //Apply map config if available.
+            if (applyMap && map && (baseParts || starMap)) {
+                nameParts = name.split('/');
+
+                for (i = nameParts.length; i > 0; i -= 1) {
+                    nameSegment = nameParts.slice(0, i).join('/');
+
+                    if (baseParts) {
+                        //Find the longest baseName segment match in the config.
+                        //So, do joins on the biggest to smallest lengths of baseParts.
+                        for (j = baseParts.length; j > 0; j -= 1) {
+                            mapValue = getOwn(map, baseParts.slice(0, j).join('/'));
+
+                            //baseName segment has config, find if it has one for
+                            //this name.
+                            if (mapValue) {
+                                mapValue = getOwn(mapValue, nameSegment);
+                                if (mapValue) {
+                                    //Match, update name to the new value.
+                                    foundMap = mapValue;
+                                    foundI = i;
+                                    break;
+                                }
+                            }
+                        }
+                    }
+
+                    if (foundMap) {
+                        break;
+                    }
+
+                    //Check for a star map match, but just hold on to it,
+                    //if there is a shorter segment match later in a matching
+                    //config, then favor over this star map.
+                    if (!foundStarMap && starMap && getOwn(starMap, nameSegment)) {
+                        foundStarMap = getOwn(starMap, nameSegment);
+                        starI = i;
+                    }
+                }
+
+                if (!foundMap && foundStarMap) {
+                    foundMap = foundStarMap;
+                    foundI = starI;
+                }
+
+                if (foundMap) {
+                    nameParts.splice(0, foundI, foundMap);
+                    name = nameParts.join('/');
+                }
+            }
+
+            return name;
+        }
+
+        function removeScript(name) {
+            if (isBrowser) {
+                each(scripts(), function (scriptNode) {
+                    if (scriptNode.getAttribute('data-requiremodule') === name &&
+                            scriptNode.getAttribute('data-requirecontext') === context.contextName) {
+                        scriptNode.parentNode.removeChild(scriptNode);
+                        return true;
+                    }
+                });
+            }
+        }
+
+        function hasPathFallback(id) {
+            var pathConfig = getOwn(config.paths, id);
+            if (pathConfig && isArray(pathConfig) && pathConfig.length > 1) {
+                //Pop off the first array value, since it failed, and
+                //retry
+                pathConfig.shift();
+                context.require.undef(id);
+                context.require([id]);
+                return true;
+            }
+        }
+
+        //Turns a plugin!resource to [plugin, resource]
+        //with the plugin being undefined if the name
+        //did not have a plugin prefix.
+        function splitPrefix(name) {
+            var prefix,
+                index = name ? name.indexOf('!') : -1;
+            if (index > -1) {
+                prefix = name.substring(0, index);
+                name = name.substring(index + 1, name.length);
+            }
+            return [prefix, name];
+        }
+
+        /**
+         * Creates a module mapping that includes plugin prefix, module
+         * name, and path. If parentModuleMap is provided it will
+         * also normalize the name via require.normalize()
+         *
+         * @param {String} name the module name
+         * @param {String} [parentModuleMap] parent module map
+         * for the module name, used to resolve relative names.
+         * @param {Boolean} isNormalized: is the ID already normalized.
+         * This is true if this call is done for a define() module ID.
+         * @param {Boolean} applyMap: apply the map config to the ID.
+         * Should only be true if this map is for a dependency.
+         *
+         * @returns {Object}
+         */
+        function makeModuleMap(name, parentModuleMap, isNormalized, applyMap) {
+            var url, pluginModule, suffix, nameParts,
+                prefix = null,
+                parentName = parentModuleMap ? parentModuleMap.name : null,
+                originalName = name,
+                isDefine = true,
+                normalizedName = '';
+
+            //If no name, then it means it is a require call, generate an
+            //internal name.
+            if (!name) {
+                isDefine = false;
+                name = '_@r' + (requireCounter += 1);
+            }
+
+            nameParts = splitPrefix(name);
+            prefix = nameParts[0];
+            name = nameParts[1];
+
+            if (prefix) {
+                prefix = normalize(prefix, parentName, applyMap);
+                pluginModule = getOwn(defined, prefix);
+            }
+
+            //Account for relative paths if there is a base name.
+            if (name) {
+                if (prefix) {
+                    if (pluginModule && pluginModule.normalize) {
+                        //Plugin is loaded, use its normalize method.
+                        normalizedName = pluginModule.normalize(name, function (name) {
+                            return normalize(name, parentName, applyMap);
+                        });
+                    } else {
+                        normalizedName = normalize(name, parentName, applyMap);
+                    }
+                } else {
+                    //A regular module.
+                    normalizedName = normalize(name, parentName, applyMap);
+
+                    //Normalized name may be a plugin ID due to map config
+                    //application in normalize. The map config values must
+                    //already be normalized, so do not need to redo that part.
+                    nameParts = splitPrefix(normalizedName);
+                    prefix = nameParts[0];
+                    normalizedName = nameParts[1];
+                    isNormalized = true;
+
+                    url = context.nameToUrl(normalizedName);
+                }
+            }
+
+            //If the id is a plugin id that cannot be determined if it needs
+            //normalization, stamp it with a unique ID so two matching relative
+            //ids that may conflict can be separate.
+            suffix = prefix && !pluginModule && !isNormalized ?
+                     '_unnormalized' + (unnormalizedCounter += 1) :
+                     '';
+
+            return {
+                prefix: prefix,
+                name: normalizedName,
+                parentMap: parentModuleMap,
+                unnormalized: !!suffix,
+                url: url,
+                originalName: originalName,
+                isDefine: isDefine,
+                id: (prefix ?
+                        prefix + '!' + normalizedName :
+                        normalizedName) + suffix
+            };
+        }
+
+        function getModule(depMap) {
+            var id = depMap.id,
+                mod = getOwn(registry, id);
+
+            if (!mod) {
+                mod = registry[id] = new context.Module(depMap);
+            }
+
+            return mod;
+        }
+
+        function on(depMap, name, fn) {
+            var id = depMap.id,
+                mod = getOwn(registry, id);
+
+            if (hasProp(defined, id) &&
+                    (!mod || mod.defineEmitComplete)) {
+                if (name === 'defined') {
+                    fn(defined[id]);
+                }
+            } else {
+                mod = getModule(depMap);
+                if (mod.error && name === 'error') {
+                    fn(mod.error);
+                } else {
+                    mod.on(name, fn);
+                }
+            }
+        }
+
+        function onError(err, errback) {
+            var ids = err.requireModules,
+                notified = false;
+
+            if (errback) {
+                errback(err);
+            } else {
+                each(ids, function (id) {
+                    var mod = getOwn(registry, id);
+                    if (mod) {
+                        //Set error on module, so it skips timeout checks.
+                        mod.error = err;
+                        if (mod.events.error) {
+                            notified = true;
+                            mod.emit('error', err);
+                        }
+                    }
+                });
+
+                if (!notified) {
+                    req.onError(err);
+                }
+            }
+        }
+
+        /**
+         * Internal method to transfer globalQueue items to this context's
+         * defQueue.
+         */
+        function takeGlobalQueue() {
+            //Push all the globalDefQueue items into the context's defQueue
+            if (globalDefQueue.length) {
+                //Array splice in the values since the context code has a
+                //local var ref to defQueue, so cannot just reassign the one
+                //on context.
+                apsp.apply(defQueue,
+                           [defQueue.length - 1, 0].concat(globalDefQueue));
+                globalDefQueue = [];
+            }
+        }
+
+        handlers = {
+            'require': function (mod) {
+                if (mod.require) {
+                    return mod.require;
+                } else {
+                    return (mod.require = context.makeRequire(mod.map));
+                }
+            },
+            'exports': function (mod) {
+                mod.usingExports = true;
+                if (mod.map.isDefine) {
+                    if (mod.exports) {
+                        return mod.exports;
+                    } else {
+                        return (mod.exports = defined[mod.map.id] = {});
+                    }
+                }
+            },
+            'module': function (mod) {
+                if (mod.module) {
+                    return mod.module;
+                } else {
+                    return (mod.module = {
+                        id: mod.map.id,
+                        uri: mod.map.url,
+                        config: function () {
+                            var c,
+                                pkg = getOwn(config.pkgs, mod.map.id);
+                            // For packages, only support config targeted
+                            // at the main module.
+                            c = pkg ? getOwn(config.config, mod.map.id + '/' + pkg.main) :
+                                      getOwn(config.config, mod.map.id);
+                            return  c || {};
+                        },
+                        exports: defined[mod.map.id]
+                    });
+                }
+            }
+        };
+
+        function cleanRegistry(id) {
+            //Clean up machinery used for waiting modules.
+            delete registry[id];
+            delete enabledRegistry[id];
+        }
+
+        function breakCycle(mod, traced, processed) {
+            var id = mod.map.id;
+
+            if (mod.error) {
+                mod.emit('error', mod.error);
+            } else {
+                traced[id] = true;
+                each(mod.depMaps, function (depMap, i) {
+                    var depId = depMap.id,
+                        dep = getOwn(registry, depId);
+
+                    //Only force things that have not completed
+                    //being defined, so still in the registry,
+                    //and only if it has not been matched up
+                    //in the module already.
+                    if (dep && !mod.depMatched[i] && !processed[depId]) {
+                        if (getOwn(traced, depId)) {
+                            mod.defineDep(i, defined[depId]);
+                            mod.check(); //pass false?
+                        } else {
+                            breakCycle(dep, traced, processed);
+                        }
+                    }
+                });
+                processed[id] = true;
+            }
+        }
+
+        function checkLoaded() {
+            var map, modId, err, usingPathFallback,
+                waitInterval = config.waitSeconds * 1000,
+                //It is possible to disable the wait interval by using waitSeconds of 0.
+                expired = waitInterval && (context.startTime + waitInterval) < new Date().getTime(),
+                noLoads = [],
+                reqCalls = [],
+                stillLoading = false,
+                needCycleCheck = true;
+
+            //Do not bother if this call was a result of a cycle break.
+            if (inCheckLoaded) {
+                return;
+            }
+
+            inCheckLoaded = true;
+
+            //Figure out the state of all the modules.
+            eachProp(enabledRegistry, function (mod) {
+                map = mod.map;
+                modId = map.id;
+
+                //Skip things that are not enabled or in error state.
+                if (!mod.enabled) {
+                    return;
+                }
+
+                if (!map.isDefine) {
+                    reqCalls.push(mod);
+                }
+
+                if (!mod.error) {
+                    //If the module should be executed, and it has not
+                    //been inited and time is up, remember it.
+                    if (!mod.inited && expired) {
+                        if (hasPathFallback(modId)) {
+                            usingPathFallback = true;
+                            stillLoading = true;
+                        } else {
+                            noLoads.push(modId);
+                            removeScript(modId);
+                        }
+                    } else if (!mod.inited && mod.fetched && map.isDefine) {
+                        stillLoading = true;
+                        if (!map.prefix) {
+                            //No reason to keep looking for unfinished
+                            //loading. If the only stillLoading is a
+                            //plugin resource though, keep going,
+                            //because it may be that a plugin resource
+                            //is waiting on a non-plugin cycle.
+                            return (needCycleCheck = false);
+                        }
+                    }
+                }
+            });
+
+            if (expired && noLoads.length) {
+                //If wait time expired, throw error of unloaded modules.
+                err = makeError('timeout', 'Load timeout for modules: ' + noLoads, null, noLoads);
+                err.contextName = context.contextName;
+                return onError(err);
+            }
+
+            //Not expired, check for a cycle.
+            if (needCycleCheck) {
+                each(reqCalls, function (mod) {
+                    breakCycle(mod, {}, {});
+                });
+            }
+
+            //If still waiting on loads, and the waiting load is something
+            //other than a plugin resource, or there are still outstanding
+            //scripts, then just try back later.
+            if ((!expired || usingPathFallback) && stillLoading) {
+                //Something is still waiting to load. Wait for it, but only
+                //if a timeout is not already in effect.
+                if ((isBrowser || isWebWorker) && !checkLoadedTimeoutId) {
+                    checkLoadedTimeoutId = setTimeout(function () {
+                        checkLoadedTimeoutId = 0;
+                        checkLoaded();
+                    }, 50);
+                }
+            }
+
+            inCheckLoaded = false;
+        }
+
+        Module = function (map) {
+            this.events = getOwn(undefEvents, map.id) || {};
+            this.map = map;
+            this.shim = getOwn(config.shim, map.id);
+            this.depExports = [];
+            this.depMaps = [];
+            this.depMatched = [];
+            this.pluginMaps = {};
+            this.depCount = 0;
+
+            /* this.exports this.factory
+               this.depMaps = [],
+               this.enabled, this.fetched
+            */
+        };
+
+        Module.prototype = {
+            init: function (depMaps, factory, errback, options) {
+                options = options || {};
+
+                //Do not do more inits if already done. Can happen if there
+                //are multiple define calls for the same module. That is not
+                //a normal, common case, but it is also not unexpected.
+                if (this.inited) {
+                    return;
+                }
+
+                this.factory = factory;
+
+                if (errback) {
+                    //Register for errors on this module.
+                    this.on('error', errback);
+                } else if (this.events.error) {
+                    //If no errback already, but there are error listeners
+                    //on this module, set up an errback to pass to the deps.
+                    errback = bind(this, function (err) {
+                        this.emit('error', err);
+                    });
+                }
+
+                //Do a copy of the dependency array, so that
+                //source inputs are not modified. For example
+                //"shim" deps are passed in here directly, and
+                //doing a direct modification of the depMaps array
+                //would affect that config.
+                this.depMaps = depMaps && depMaps.slice(0);
+
+                this.errback = errback;
+
+                //Indicate this module has be initialized
+                this.inited = true;
+
+                this.ignore = options.ignore;
+
+                //Could have option to init this module in enabled mode,
+                //or could have been previously marked as enabled. However,
+                //the dependencies are not known until init is called. So
+                //if enabled previously, now trigger dependencies as enabled.
+                if (options.enabled || this.enabled) {
+                    //Enable this module and dependencies.
+                    //Will call this.check()
+                    this.enable();
+                } else {
+                    this.check();
+                }
+            },
+
+            defineDep: function (i, depExports) {
+                //Because of cycles, defined callback for a given
+                //export can be called more than once.
+                if (!this.depMatched[i]) {
+                    this.depMatched[i] = true;
+                    this.depCount -= 1;
+                    this.depExports[i] = depExports;
+                }
+            },
+
+            fetch: function () {
+                if (this.fetched) {
+                    return;
+                }
+                this.fetched = true;
+
+                context.startTime = (new Date()).getTime();
+
+                var map = this.map;
+
+                //If the manager is for a plugin managed resource,
+                //ask the plugin to load it now.
+                if (this.shim) {
+                    context.makeRequire(this.map, {
+                        enableBuildCallback: true
+                    })(this.shim.deps || [], bind(this, function () {
+                        return map.prefix ? this.callPlugin() : this.load();
+                    }));
+                } else {
+                    //Regular dependency.
+                    return map.prefix ? this.callPlugin() : this.load();
+                }
+            },
+
+            load: function () {
+                var url = this.map.url;
+
+                //Regular dependency.
+                if (!urlFetched[url]) {
+                    urlFetched[url] = true;
+                    context.load(this.map.id, url);
+                }
+            },
+
+            /**
+             * Checks if the module is ready to define itself, and if so,
+             * define it.
+             */
+            check: function () {
+                if (!this.enabled || this.enabling) {
+                    return;
+                }
+
+                var err, cjsModule,
+                    id = this.map.id,
+                    depExports = this.depExports,
+                    exports = this.exports,
+                    factory = this.factory;
+
+                if (!this.inited) {
+                    this.fetch();
+                } else if (this.error) {
+                    this.emit('error', this.error);
+                } else if (!this.defining) {
+                    //The factory could trigger another require call
+                    //that would result in checking this module to
+                    //define itself again. If already in the process
+                    //of doing that, skip this work.
+                    this.defining = true;
+
+                    if (this.depCount < 1 && !this.defined) {
+                        if (isFunction(factory)) {
+                            //If there is an error listener, favor passing
+                            //to that instead of throwing an error. However,
+                            //only do it for define()'d  modules. require
+                            //errbacks should not be called for failures in
+                            //their callbacks (#699). However if a global
+                            //onError is set, use that.
+                            if ((this.events.error && this.map.isDefine) ||
+                                req.onError !== defaultOnError) {
+                                try {
+                                    exports = context.execCb(id, factory, depExports, exports);
+                                } catch (e) {
+                                    err = e;
+                                }
+                            } else {
+                                exports = context.execCb(id, factory, depExports, exports);
+                            }
+
+                            if (this.map.isDefine) {
+                                //If setting exports via 'module' is in play,
+                                //favor that over return value and exports. After that,
+                                //favor a non-undefined return value over exports use.
+                                cjsModule = this.module;
+                                if (cjsModule &&
+                                        cjsModule.exports !== undefined &&
+                                        //Make sure it is not already the exports value
+                                        cjsModule.exports !== this.exports) {
+                                    exports = cjsModule.exports;
+                                } else if (exports === undefined && this.usingExports) {
+                                    //exports already set the defined value.
+                                    exports = this.exports;
+                                }
+                            }
+
+                            if (err) {
+                                err.requireMap = this.map;
+                                err.requireModules = this.map.isDefine ? [this.map.id] : null;
+                                err.requireType = this.map.isDefine ? 'define' : 'require';
+                                return onError((this.error = err));
+                            }
+
+                        } else {
+                            //Just a literal value
+                            exports = factory;
+                        }
+
+                        this.exports = exports;
+
+                        if (this.map.isDefine && !this.ignore) {
+                            defined[id] = exports;
+
+                            if (req.onResourceLoad) {
+                                req.onResourceLoad(context, this.map, this.depMaps);
+                            }
+                        }
+
+                        //Clean up
+                        cleanRegistry(id);
+
+                        this.defined = true;
+                    }
+
+                    //Finished the define stage. Allow calling check again
+                    //to allow define notifications below in the case of a
+                    //cycle.
+                    this.defining = false;
+
+                    if (this.defined && !this.defineEmitted) {
+                        this.defineEmitted = true;
+                        this.emit('defined', this.exports);
+                        this.defineEmitComplete = true;
+                    }
+
+                }
+            },
+
+            callPlugin: function () {
+                var map = this.map,
+                    id = map.id,
+                    //Map already normalized the prefix.
+                    pluginMap = makeModuleMap(map.prefix);
+
+                //Mark this as a dependency for this plugin, so it
+                //can be traced for cycles.
+                this.depMaps.push(pluginMap);
+
+                on(pluginMap, 'defined', bind(this, function (plugin) {
+                    var load, normalizedMap, normalizedMod,
+                        name = this.map.name,
+                        parentName = this.map.parentMap ? this.map.parentMap.name : null,
+                        localRequire = context.makeRequire(map.parentMap, {
+                            enableBuildCallback: true
+                        });
+
+                    //If current map is not normalized, wait for that
+                    //normalized name to load instead of continuing.
+                    if (this.map.unnormalized) {
+                        //Normalize the ID if the plugin allows it.
+                        if (plugin.normalize) {
+                            name = plugin.normalize(name, function (name) {
+                                return normalize(name, parentName, true);
+                            }) || '';
+                        }
+
+                        //prefix and name should already be normalized, no need
+                        //for applying map config again either.
+                        normalizedMap = makeModuleMap(map.prefix + '!' + name,
+                                                      this.map.parentMap);
+                        on(normalizedMap,
+                            'defined', bind(this, function (value) {
+                                this.init([], function () { return value; }, null, {
+                                    enabled: true,
+                                    ignore: true
+                                });
+                            }));
+
+                        normalizedMod = getOwn(registry, normalizedMap.id);
+                        if (normalizedMod) {
+                            //Mark this as a dependency for this plugin, so it
+                            //can be traced for cycles.
+                            this.depMaps.push(normalizedMap);
+
+                            if (this.events.error) {
+                                normalizedMod.on('error', bind(this, function (err) {
+                                    this.emit('error', err);
+                                }));
+                            }
+                            normalizedMod.enable();
+                        }
+
+                        return;
+                    }
+
+                    load = bind(this, function (value) {
+                        this.init([], function () { return value; }, null, {
+                            enabled: true
+                        });
+                    });
+
+                    load.error = bind(this, function (err) {
+                        this.inited = true;
+                        this.error = err;
+                        err.requireModules = [id];
+
+                        //Remove temp unnormalized modules for this module,
+                        //since they will never be resolved otherwise now.
+                        eachProp(registry, function (mod) {
+                            if (mod.map.id.indexOf(id + '_unnormalized') === 0) {
+                                cleanRegistry(mod.map.id);
+                            }
+                        });
+
+                        onError(err);
+                    });
+
+                    //Allow plugins to load other code without having to know the
+                    //context or how to 'complete' the load.
+                    load.fromText = bind(this, function (text, textAlt) {
+                        /*jslint evil: true */
+                        var moduleName = map.name,
+                            moduleMap = makeModuleMap(moduleName),
+                            hasInteractive = useInteractive;
+
+                        //As of 2.1.0, support just passing the text, to reinforce
+                        //fromText only being called once per resource. Still
+                        //support old style of passing moduleName but discard
+                        //that moduleName in favor of the internal ref.
+                        if (textAlt) {
+                            text = textAlt;
+                        }
+
+                        //Turn off interactive script matching for IE for any define
+                        //calls in the text, then turn it back on at the end.
+                        if (hasInteractive) {
+                            useInteractive = false;
+                        }
+
+                        //Prime the system by creating a module instance for
+                        //it.
+                        getModule(moduleMap);
+
+                        //Transfer any config to this other module.
+                        if (hasProp(config.config, id)) {
+                            config.config[moduleName] = config.config[id];
+                        }
+
+                        try {
+                            req.exec(text);
+                        } catch (e) {
+                            return onError(makeError('fromtexteval',
+                                             'fromText eval for ' + id +
+                                            ' failed: ' + e,
+                                             e,
+                                             [id]));
+                        }
+
+                        if (hasInteractive) {
+                            useInteractive = true;
+                        }
+
+                        //Mark this as a dependency for the plugin
+                        //resource
+                        this.depMaps.push(moduleMap);
+
+                        //Support anonymous modules.
+                        context.completeLoad(moduleName);
+
+                        //Bind the value of that module to the value for this
+                        //resource ID.
+                        localRequire([moduleName], load);
+                    });
+
+                    //Use parentName here since the plugin's name is not reliable,
+                    //could be some weird string with no path that actually wants to
+                    //reference the parentName's path.
+                    plugin.load(map.name, localRequire, load, config);
+                }));
+
+                context.enable(pluginMap, this);
+                this.pluginMaps[pluginMap.id] = pluginMap;
+            },
+
+            enable: function () {
+                enabledRegistry[this.map.id] = this;
+                this.enabled = true;
+
+                //Set flag mentioning that the module is enabling,
+                //so that immediate calls to the defined callbacks
+                //for dependencies do not trigger inadvertent load
+                //with the depCount still being zero.
+                this.enabling = true;
+
+                //Enable each dependency
+                each(this.depMaps, bind(this, function (depMap, i) {
+                    var id, mod, handler;
+
+                    if (typeof depMap === 'string') {
+                        //Dependency needs to be converted to a depMap
+                        //and wired up to this module.
+                        depMap = makeModuleMap(depMap,
+                                               (this.map.isDefine ? this.map : this.map.parentMap),
+                                               false,
+                                               !this.skipMap);
+                        this.depMaps[i] = depMap;
+
+                        handler = getOwn(handlers, depMap.id);
+
+                        if (handler) {
+                            this.depExports[i] = handler(this);
+                            return;
+                        }
+
+                        this.depCount += 1;
+
+                        on(depMap, 'defined', bind(this, function (depExports) {
+                            this.defineDep(i, depExports);
+                            this.check();
+                        }));
+
+                        if (this.errback) {
+                            on(depMap, 'error', bind(this, this.errback));
+                        }
+                    }
+
+                    id = depMap.id;
+                    mod = registry[id];
+
+                    //Skip special modules like 'require', 'exports', 'module'
+                    //Also, don't call enable if it is already enabled,
+                    //important in circular dependency cases.
+                    if (!hasProp(handlers, id) && mod && !mod.enabled) {
+                        context.enable(depMap, this);
+                    }
+                }));
+
+                //Enable each plugin that is used in
+                //a dependency
+                eachProp(this.pluginMaps, bind(this, function (pluginMap) {
+                    var mod = getOwn(registry, pluginMap.id);
+                    if (mod && !mod.enabled) {
+                        context.enable(pluginMap, this);
+                    }
+                }));
+
+                this.enabling = false;
+
+                this.check();
+            },
+
+            on: function (name, cb) {
+                var cbs = this.events[name];
+                if (!cbs) {
+                    cbs = this.events[name] = [];
+                }
+                cbs.push(cb);
+            },
+
+            emit: function (name, evt) {
+                each(this.events[name], function (cb) {
+                    cb(evt);
+                });
+                if (name === 'error') {
+                    //Now that the error handler was triggered, remove
+                    //the listeners, since this broken Module instance
+                    //can stay around for a while in the registry.
+                    delete this.events[name];
+                }
+            }
+        };
+
+        function callGetModule(args) {
+            //Skip modules already defined.
+            if (!hasProp(defined, args[0])) {
+                getModule(makeModuleMap(args[0], null, true)).init(args[1], args[2]);
+            }
+        }
+
+        function removeListener(node, func, name, ieName) {
+            //Favor detachEvent because of IE9
+            //issue, see attachEvent/addEventListener comment elsewhere
+            //in this file.
+            if (node.detachEvent && !isOpera) {
+                //Probably IE. If not it will throw an error, which will be
+                //useful to know.
+                if (ieName) {
+                    node.detachEvent(ieName, func);
+                }
+            } else {
+                node.removeEventListener(name, func, false);
+            }
+        }
+
+        /**
+         * Given an event from a script node, get the requirejs info from it,
+         * and then removes the event listeners on the node.
+         * @param {Event} evt
+         * @returns {Object}
+         */
+        function getScriptData(evt) {
+            //Using currentTarget instead of target for Firefox 2.0's sake. Not
+            //all old browsers will be supported, but this one was easy enough
+            //to support and still makes sense.
+            var node = evt.currentTarget || evt.srcElement;
+
+            //Remove the listeners once here.
+            removeListener(node, context.onScriptLoad, 'load', 'onreadystatechange');
+            removeListener(node, context.onScriptError, 'error');
+
+            return {
+                node: node,
+                id: node && node.getAttribute('data-requiremodule')
+            };
+        }
+
+        function intakeDefines() {
+            var args;
+
+            //Any defined modules in the global queue, intake them now.
+            takeGlobalQueue();
+
+            //Make sure any remaining defQueue items get properly processed.
+            while (defQueue.length) {
+                args = defQueue.shift();
+                if (args[0] === null) {
+                    return onError(makeError('mismatch', 'Mismatched anonymous define() module: ' + args[args.length - 1]));
+                } else {
+                    //args are id, deps, factory. Should be normalized by the
+                    //define() function.
+                    callGetModule(args);
+                }
+            }
+        }
+
+        context = {
+            config: config,
+            contextName: contextName,
+            registry: registry,
+            defined: defined,
+            urlFetched: urlFetched,
+            defQueue: defQueue,
+            Module: Module,
+            makeModuleMap: makeModuleMap,
+            nextTick: req.nextTick,
+            onError: onError,
+
+            /**
+             * Set a configuration for the context.
+             * @param {Object} cfg config object to integrate.
+             */
+            configure: function (cfg) {
+                //Make sure the baseUrl ends in a slash.
+                if (cfg.baseUrl) {
+                    if (cfg.baseUrl.charAt(cfg.baseUrl.length - 1) !== '/') {
+                        cfg.baseUrl += '/';
+                    }
+                }
+
+                //Save off the paths and packages since they require special processing,
+                //they are additive.
+                var pkgs = config.pkgs,
+                    shim = config.shim,
+                    objs = {
+                        paths: true,
+                        config: true,
+                        map: true
+                    };
+
+                eachProp(cfg, function (value, prop) {
+                    if (objs[prop]) {
+                        if (prop === 'map') {
+                            if (!config.map) {
+                                config.map = {};
+                            }
+                            mixin(config[prop], value, true, true);
+                        } else {
+                            mixin(config[prop], value, true);
+                        }
+                    } else {
+                        config[prop] = value;
+                    }
+                });
+
+                //Merge shim
+                if (cfg.shim) {
+                    eachProp(cfg.shim, function (value, id) {
+                        //Normalize the structure
+                        if (isArray(value)) {
+                            value = {
+                                deps: value
+                            };
+                        }
+                        if ((value.exports || value.init) && !value.exportsFn) {
+                            value.exportsFn = context.makeShimExports(value);
+                        }
+                        shim[id] = value;
+                    });
+                    config.shim = shim;
+                }
+
+                //Adjust packages if necessary.
+                if (cfg.packages) {
+                    each(cfg.packages, function (pkgObj) {
+                        var location;
+
+                        pkgObj = typeof pkgObj === 'string' ? { name: pkgObj } : pkgObj;
+                        location = pkgObj.location;
+
+                        //Create a brand new object on pkgs, since currentPackages can
+                        //be passed in again, and config.pkgs is the internal transformed
+                        //state for all package configs.
+                        pkgs[pkgObj.name] = {
+                            name: pkgObj.name,
+                            location: location || pkgObj.name,
+                            //Remove leading dot in main, so main paths are normalized,
+                            //and remove any trailing .js, since different package
+                            //envs have different conventions: some use a module name,
+                            //some use a file name.
+                            main: (pkgObj.main || 'main')
+                                  .replace(currDirRegExp, '')
+                                  .replace(jsSuffixRegExp, '')
+                        };
+                    });
+
+                    //Done with modifications, assing packages back to context config
+                    config.pkgs = pkgs;
+                }
+
+                //If there are any "waiting to execute" modules in the registry,
+                //update the maps for them, since their info, like URLs to load,
+                //may have changed.
+                eachProp(registry, function (mod, id) {
+                    //If module already has init called, since it is too
+                    //late to modify them, and ignore unnormalized ones
+                    //since they are transient.
+                    if (!mod.inited && !mod.map.unnormalized) {
+                        mod.map = makeModuleMap(id);
+                    }
+                });
+
+                //If a deps array or a config callback is specified, then call
+                //require with those args. This is useful when require is defined as a
+                //config object before require.js is loaded.
+                if (cfg.deps || cfg.callback) {
+                    context.require(cfg.deps || [], cfg.callback);
+                }
+            },
+
+            makeShimExports: function (value) {
+                function fn() {
+                    var ret;
+                    if (value.init) {
+                        ret = value.init.apply(global, arguments);
+                    }
+                    return ret || (value.exports && getGlobal(value.exports));
+                }
+                return fn;
+            },
+
+            makeRequire: function (relMap, options) {
+                options = options || {};
+
+                function localRequire(deps, callback, errback) {
+                    var id, map, requireMod;
+
+                    if (options.enableBuildCallback && callback && isFunction(callback)) {
+                        callback.__requireJsBuild = true;
+                    }
+
+                    if (typeof deps === 'string') {
+                        if (isFunction(callback)) {
+                            //Invalid call
+                            return onError(makeError('requireargs', 'Invalid require call'), errback);
+                        }
+
+                        //If require|exports|module are requested, get the
+                        //value for them from the special handlers. Caveat:
+                        //this only works while module is being defined.
+                        if (relMap && hasProp(handlers, deps)) {
+                            return handlers[deps](registry[relMap.id]);
+                        }
+
+                        //Synchronous access to one module. If require.get is
+                        //available (as in the Node adapter), prefer that.
+                        if (req.get) {
+                            return req.get(context, deps, relMap, localRequire);
+                        }
+
+                        //Normalize module name, if it contains . or ..
+                        map = makeModuleMap(deps, relMap, false, true);
+                        id = map.id;
+
+                        if (!hasProp(defined, id)) {
+                            return onError(makeError('notloaded', 'Module name "' +
+                                        id +
+                                        '" has not been loaded yet for context: ' +
+                                        contextName +
+                                        (relMap ? '' : '. Use require([])')));
+                        }
+                        return defined[id];
+                    }
+
+                    //Grab defines waiting in the global queue.
+                    intakeDefines();
+
+                    //Mark all the dependencies as needing to be loaded.
+                    context.nextTick(function () {
+                        //Some defines could have been added since the
+                        //require call, collect them.
+                        intakeDefines();
+
+                        requireMod = getModule(makeModuleMap(null, relMap));
+
+                        //Store if map config should be applied to this require
+                        //call for dependencies.
+                        requireMod.skipMap = options.skipMap;
+
+                        requireMod.init(deps, callback, errback, {
+                            enabled: true
+                        });
+
+                        checkLoaded();
+                    });
+
+                    return localRequire;
+                }
+
+                mixin(localRequire, {
+                    isBrowser: isBrowser,
+
+                    /**
+                     * Converts a module name + .extension into an URL path.
+                     * *Requires* the use of a module name. It does not support using
+                     * plain URLs like nameToUrl.
+                     */
+                    toUrl: function (moduleNamePlusExt) {
+                        var ext,
+                            index = moduleNamePlusExt.lastIndexOf('.'),
+                            segment = moduleNamePlusExt.split('/')[0],
+                            isRelative = segment === '.' || segment === '..';
+
+                        //Have a file extension alias, and it is not the
+                        //dots from a relative path.
+                        if (index !== -1 && (!isRelative || index > 1)) {
+                            ext = moduleNamePlusExt.substring(index, moduleNamePlusExt.length);
+                            moduleNamePlusExt = moduleNamePlusExt.substring(0, index);
+                        }
+
+                        return context.nameToUrl(normalize(moduleNamePlusExt,
+                                                relMap && relMap.id, true), ext,  true);
+                    },
+
+                    defined: function (id) {
+                        return hasProp(defined, makeModuleMap(id, relMap, false, true).id);
+                    },
+
+                    specified: function (id) {
+                        id = makeModuleMap(id, relMap, false, true).id;
+                        return hasProp(defined, id) || hasProp(registry, id);
+                    }
+                });
+
+                //Only allow undef on top level require calls
+                if (!relMap) {
+                    localRequire.undef = function (id) {
+                        //Bind any waiting define() calls to this context,
+                        //fix for #408
+                        takeGlobalQueue();
+
+                        var map = makeModuleMap(id, relMap, true),
+                            mod = getOwn(registry, id);
+
+                        removeScript(id);
+
+                        delete defined[id];
+                        delete urlFetched[map.url];
+                        delete undefEvents[id];
+
+                        if (mod) {
+                            //Hold on to listeners in case the
+                            //module will be attempted to be reloaded
+                            //using a different config.
+                            if (mod.events.defined) {
+                                undefEvents[id] = mod.events;
+                            }
+
+                            cleanRegistry(id);
+                        }
+                    };
+                }
+
+                return localRequire;
+            },
+
+            /**
+             * Called to enable a module if it is still in the registry
+             * awaiting enablement. A second arg, parent, the parent module,
+             * is passed in for context, when this method is overriden by
+             * the optimizer. Not shown here to keep code compact.
+             */
+            enable: function (depMap) {
+                var mod = getOwn(registry, depMap.id);
+                if (mod) {
+                    getModule(depMap).enable();
+                }
+            },
+
+            /**
+             * Internal method used by environment adapters to complete a load event.
+             * A load event could be a script load or just a load pass from a synchronous
+             * load call.
+             * @param {String} moduleName the name of the module to potentially complete.
+             */
+            completeLoad: function (moduleName) {
+                var found, args, mod,
+                    shim = getOwn(config.shim, moduleName) || {},
+                    shExports = shim.exports;
+
+                takeGlobalQueue();
+
+                while (defQueue.length) {
+                    args = defQueue.shift();
+                    if (args[0] === null) {
+                        args[0] = moduleName;
+                        //If already found an anonymous module and bound it
+                        //to this name, then this is some other anon module
+                        //waiting for its completeLoad to fire.
+                        if (found) {
+                            break;
+                        }
+                        found = true;
+                    } else if (args[0] === moduleName) {
+                        //Found matching define call for this script!
+                        found = true;
+                    }
+
+                    callGetModule(args);
+                }
+
+                //Do this after the cycle of callGetModule in case the result
+                //of those calls/init calls changes the registry.
+                mod = getOwn(registry, moduleName);
+
+                if (!found && !hasProp(defined, moduleName) && mod && !mod.inited) {
+                    if (config.enforceDefine && (!shExports || !getGlobal(shExports))) {
+                        if (hasPathFallback(moduleName)) {
+                            return;
+                        } else {
+                            return onError(makeError('nodefine',
+                                             'No define call for ' + moduleName,
+                                             null,
+                                             [moduleName]));
+                        }
+                    } else {
+                        //A script that does not call define(), so just simulate
+                        //the call for it.
+                        callGetModule([moduleName, (shim.deps || []), shim.exportsFn]);
+                    }
+                }
+
+                checkLoaded();
+            },
+
+            /**
+             * Converts a module name to a file path. Supports cases where
+             * moduleName may actually be just an URL.
+             * Note that it **does not** call normalize on the moduleName,
+             * it is assumed to have already been normalized. This is an
+             * internal API, not a public one. Use toUrl for the public API.
+             */
+            nameToUrl: function (moduleName, ext, skipExt) {
+                var paths, pkgs, pkg, pkgPath, syms, i, parentModule, url,
+                    parentPath;
+
+                //If a colon is in the URL, it indicates a protocol is used and it is just
+                //an URL to a file, or if it starts with a slash, contains a query arg (i.e. ?)
+                //or ends with .js, then assume the user meant to use an url and not a module id.
+                //The slash is important for protocol-less URLs as well as full paths.
+                if (req.jsExtRegExp.test(moduleName)) {
+                    //Just a plain path, not module name lookup, so just return it.
+                    //Add extension if it is included. This is a bit wonky, only non-.js things pass
+                    //an extension, this method probably needs to be reworked.
+                    url = moduleName + (ext || '');
+                } else {
+                    //A module that needs to be converted to a path.
+                    paths = config.paths;
+                    pkgs = config.pkgs;
+
+                    syms = moduleName.split('/');
+                    //For each module name segment, see if there is a path
+                    //registered for it. Start with most specific name
+                    //and work up from it.
+                    for (i = syms.length; i > 0; i -= 1) {
+                        parentModule = syms.slice(0, i).join('/');
+                        pkg = getOwn(pkgs, parentModule);
+                        parentPath = getOwn(paths, parentModule);
+                        if (parentPath) {
+                            //If an array, it means there are a few choices,
+                            //Choose the one that is desired
+                            if (isArray(parentPath)) {
+                                parentPath = parentPath[0];
+                            }
+                            syms.splice(0, i, parentPath);
+                            break;
+                        } else if (pkg) {
+                            //If module name is just the package name, then looking
+                            //for the main module.
+                            if (moduleName === pkg.name) {
+                                pkgPath = pkg.location + '/' + pkg.main;
+                            } else {
+                                pkgPath = pkg.location;
+                            }
+                            syms.splice(0, i, pkgPath);
+                            break;
+                        }
+                    }
+
+                    //Join the path parts together, then figure out if baseUrl is needed.
+                    url = syms.join('/');
+                    url += (ext || (/^data\:|\?/.test(url) || skipExt ? '' : '.js'));
+                    url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? '' : config.baseUrl) + url;
+                }
+
+                return config.urlArgs ? url +
+                                        ((url.indexOf('?') === -1 ? '?' : '&') +
+                                         config.urlArgs) : url;
+            },
+
+            //Delegates to req.load. Broken out as a separate function to
+            //allow overriding in the optimizer.
+            load: function (id, url) {
+                req.load(context, id, url);
+            },
+
+            /**
+             * Executes a module callback function. Broken out as a separate function
+             * solely to allow the build system to sequence the files in the built
+             * layer in the right sequence.
+             *
+             * @private
+             */
+            execCb: function (name, callback, args, exports) {
+                return callback.apply(exports, args);
+            },
+
+            /**
+             * callback for script loads, used to check status of loading.
+             *
+             * @param {Event} evt the event from the browser for the script
+             * that was loaded.
+             */
+            onScriptLoad: function (evt) {
+                //Using currentTarget instead of target for Firefox 2.0's sake. Not
+                //all old browsers will be supported, but this one was easy enough
+                //to support and still makes sense.
+                if (evt.type === 'load' ||
+                        (readyRegExp.test((evt.currentTarget || evt.srcElement).readyState))) {
+                    //Reset interactive script so a script node is not held onto for
+                    //to long.
+                    interactiveScript = null;
+
+                    //Pull out the name of the module and the context.
+                    var data = getScriptData(evt);
+                    context.completeLoad(data.id);
+                }
+            },
+
+            /**
+             * Callback for script errors.
+             */
+            onScriptError: function (evt) {
+                var data = getScriptData(evt);
+                if (!hasPathFallback(data.id)) {
+                    return onError(makeError('scripterror', 'Script error for: ' + data.id, evt, [data.id]));
+                }
+            }
+        };
+
+        context.require = context.makeRequire();
+        return context;
+    }
+
+    /**
+     * Main entry point.
+     *
+     * If the only argument to require is a string, then the module that
+     * is represented by that string is fetched for the appropriate context.
+     *
+     * If the first argument is an array, then it will be treated as an array
+     * of dependency string names to fetch. An optional function callback can
+     * be specified to execute when all of those dependencies are available.
+     *
+     * Make a local req variable to help Caja compliance (it assumes things
+     * on a require that are not standardized), and to give a short
+     * name for minification/local scope use.
+     */
+    req = requirejs = function (deps, callback, errback, optional) {
+
+        //Find the right context, use default
+        var context, config,
+            contextName = defContextName;
+
+        // Determine if have config object in the call.
+        if (!isArray(deps) && typeof deps !== 'string') {
+            // deps is a config object
+            config = deps;
+            if (isArray(callback)) {
+                // Adjust args if there are dependencies
+                deps = callback;
+                callback = errback;
+                errback = optional;
+            } else {
+                deps = [];
+            }
+        }
+
+        if (config && config.context) {
+            contextName = config.context;
+        }
+
+        context = getOwn(contexts, contextName);
+        if (!context) {
+            context = contexts[contextName] = req.s.newContext(contextName);
+        }
+
+        if (config) {
+            context.configure(config);
+        }
+
+        return context.require(deps, callback, errback);
+    };
+
+    /**
+     * Support require.config() to make it easier to cooperate with other
+     * AMD loaders on globally agreed names.
+     */
+    req.config = function (config) {
+        return req(config);
+    };
+
+    /**
+     * Execute something after the current tick
+     * of the event loop. Override for other envs
+     * that have a better solution than setTimeout.
+     * @param  {Function} fn function to execute later.
+     */
+    req.nextTick = typeof setTimeout !== 'undefined' ? function (fn) {
+        setTimeout(fn, 4);
+    } : function (fn) { fn(); };
+
+    /**
+     * Export require as a global, but only if it does not already exist.
+     */
+    if (!require) {
+        require = req;
+    }
+
+    req.version = version;
+
+    //Used to filter out dependencies that are already paths.
+    req.jsExtRegExp = /^\/|:|\?|\.js$/;
+    req.isBrowser = isBrowser;
+    s = req.s = {
+        contexts: contexts,
+        newContext: newContext
+    };
+
+    //Create default context.
+    req({});
+
+    //Exports some context-sensitive methods on global require.
+    each([
+        'toUrl',
+        'undef',
+        'defined',
+        'specified'
+    ], function (prop) {
+        //Reference from contexts instead of early binding to default context,
+        //so that during builds, the latest instance of the default context
+        //with its config gets used.
+        req[prop] = function () {
+            var ctx = contexts[defContextName];
+            return ctx.require[prop].apply(ctx, arguments);
+        };
+    });
+
+    if (isBrowser) {
+        head = s.head = document.getElementsByTagName('head')[0];
+        //If BASE tag is in play, using appendChild is a problem for IE6.
+        //When that browser dies, this can be removed. Details in this jQuery bug:
+        //http://dev.jquery.com/ticket/2709
+        baseElement = document.getElementsByTagName('base')[0];
+        if (baseElement) {
+            head = s.head = baseElement.parentNode;
+        }
+    }
+
+    /**
+     * Any errors that require explicitly generates will be passed to this
+     * function. Intercept/override it if you want custom error handling.
+     * @param {Error} err the error object.
+     */
+    req.onError = defaultOnError;
+
+    /**
+     * Creates the node for the load command. Only used in browser envs.
+     */
+    req.createNode = function (config, moduleName, url) {
+        var node = config.xhtml ?
+                document.createElementNS('http://www.w3.org/1999/xhtml', 'html:script') :
+                document.createElement('script');
+        node.type = config.scriptType || 'text/javascript';
+        node.charset = 'utf-8';
+        node.async = true;
+        return node;
+    };
+
+    /**
+     * Does the request to load a module for the browser case.
+     * Make this a separate function to allow other environments
+     * to override it.
+     *
+     * @param {Object} context the require context to find state.
+     * @param {String} moduleName the name of the module.
+     * @param {Object} url the URL to the module.
+     */
+    req.load = function (context, moduleName, url) {
+        var config = (context && context.config) || {},
+            node;
+        if (isBrowser) {
+            //In the browser so use a script tag
+            node = req.createNode(config, moduleName, url);
+
+            node.setAttribute('data-requirecontext', context.contextName);
+            node.setAttribute('data-requiremodule', moduleName);
+
+            //Set up load listener. Test attachEvent first because IE9 has
+            //a subtle issue in its addEventListener and script onload firings
+            //that do not match the behavior of all other browsers with
+            //addEventListener support, which fire the onload event for a
+            //script right after the script execution. See:
+            //https://connect.microsoft.com/IE/feedback/details/648057/script-onload-event-is-not-fired-immediately-after-script-execution
+            //UNFORTUNATELY Opera implements attachEvent but does not follow the script
+            //script execution mode.
+            if (node.attachEvent &&
+                    //Check if node.attachEvent is artificially added by custom script or
+                    //natively supported by browser
+                    //read https://github.com/jrburke/requirejs/issues/187
+                    //if we can NOT find [native code] then it must NOT natively supported.
+                    //in IE8, node.attachEvent does not have toString()
+                    //Note the test for "[native code" with no closing brace, see:
+                    //https://github.com/jrburke/requirejs/issues/273
+                    !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) &&
+                    !isOpera) {
+                //Probably IE. IE (at least 6-8) do not fire
+                //script onload right after executing the script, so
+                //we cannot tie the anonymous define call to a name.
+                //However, IE reports the script as being in 'interactive'
+                //readyState at the time of the define call.
+                useInteractive = true;
+
+                node.attachEvent('onreadystatechange', context.onScriptLoad);
+                //It would be great to add an error handler here to catch
+                //404s in IE9+. However, onreadystatechange will fire before
+                //the error handler, so that does not help. If addEventListener
+                //is used, then IE will fire error before load, but we cannot
+                //use that pathway given the connect.microsoft.com issue
+                //mentioned above about not doing the 'script execute,
+                //then fire the script load event listener before execute
+                //next script' that other browsers do.
+                //Best hope: IE10 fixes the issues,
+                //and then destroys all installs of IE 6-9.
+                //node.attachEvent('onerror', context.onScriptError);
+            } else {
+                node.addEventListener('load', context.onScriptLoad, false);
+                node.addEventListener('error', context.onScriptError, false);
+            }
+            node.src = url;
+
+            //For some cache cases in IE 6-8, the script executes before the end
+            //of the appendChild execution, so to tie an anonymous define
+            //call to the module name (which is stored on the node), hold on
+            //to a reference to this node, but clear after the DOM insertion.
+            currentlyAddingScript = node;
+            if (baseElement) {
+                head.insertBefore(node, baseElement);
+            } else {
+                head.appendChild(node);
+            }
+            currentlyAddingScript = null;
+
+            return node;
+        } else if (isWebWorker) {
+            try {
+                //In a web worker, use importScripts. This is not a very
+                //efficient use of importScripts, importScripts will block until
+                //its script is downloaded and evaluated. However, if web workers
+                //are in play, the expectation that a build has been done so that
+                //only one script needs to be loaded anyway. This may need to be
+                //reevaluated if other use cases become common.
+                importScripts(url);
+
+                //Account for anonymous modules
+                context.completeLoad(moduleName);
+            } catch (e) {
+                context.onError(makeError('importscripts',
+                                'importScripts failed for ' +
+                                    moduleName + ' at ' + url,
+                                e,
+                                [moduleName]));
+            }
+        }
+    };
+
+    function getInteractiveScript() {
+        if (interactiveScript && interactiveScript.readyState === 'interactive') {
+            return interactiveScript;
+        }
+
+        eachReverse(scripts(), function (script) {
+            if (script.readyState === 'interactive') {
+                return (interactiveScript = script);
+            }
+        });
+        return interactiveScript;
+    }
+
+    //Look for a data-main script attribute, which could also adjust the baseUrl.
+    if (isBrowser && !cfg.skipDataMain) {
+        //Figure out baseUrl. Get it from the script tag with require.js in it.
+        eachReverse(scripts(), function (script) {
+            //Set the 'head' where we can append children by
+            //using the script's parent.
+            if (!head) {
+                head = script.parentNode;
+            }
+
+            //Look for a data-main attribute to set main script for the page
+            //to load. If it is there, the path to data main becomes the
+            //baseUrl, if it is not already set.
+            dataMain = script.getAttribute('data-main');
+            if (dataMain) {
+                //Preserve dataMain in case it is a path (i.e. contains '?')
+                mainScript = dataMain;
+
+                //Set final baseUrl if there is not already an explicit one.
+                if (!cfg.baseUrl) {
+                    //Pull off the directory of data-main for use as the
+                    //baseUrl.
+                    src = mainScript.split('/');
+                    mainScript = src.pop();
+                    subPath = src.length ? src.join('/')  + '/' : './';
+
+                    cfg.baseUrl = subPath;
+                }
+
+                //Strip off any trailing .js since mainScript is now
+                //like a module name.
+                mainScript = mainScript.replace(jsSuffixRegExp, '');
+
+                 //If mainScript is still a path, fall back to dataMain
+                if (req.jsExtRegExp.test(mainScript)) {
+                    mainScript = dataMain;
+                }
+
+                //Put the data-main script in the files to load.
+                cfg.deps = cfg.deps ? cfg.deps.concat(mainScript) : [mainScript];
+
+                return true;
+            }
+        });
+    }
+
+    /**
+     * The function that handles definitions of modules. Differs from
+     * require() in that a string for the module should be the first argument,
+     * and the function to execute after dependencies are loaded should
+     * return a value to define the module corresponding to the first argument's
+     * name.
+     */
+    define = function (name, deps, callback) {
+        var node, context;
+
+        //Allow for anonymous modules
+        if (typeof name !== 'string') {
+            //Adjust args appropriately
+            callback = deps;
+            deps = name;
+            name = null;
+        }
+
+        //This module may not have dependencies
+        if (!isArray(deps)) {
+            callback = deps;
+            deps = null;
+        }
+
+        //If no name, and callback is a function, then figure out if it a
+        //CommonJS thing with dependencies.
+        if (!deps && isFunction(callback)) {
+            deps = [];
+            //Remove comments from the callback string,
+            //look for require calls, and pull them into the dependencies,
+            //but only if there are function args.
+            if (callback.length) {
+                callback
+                    .toString()
+                    .replace(commentRegExp, '')
+                    .replace(cjsRequireRegExp, function (match, dep) {
+                        deps.push(dep);
+                    });
+
+                //May be a CommonJS thing even without require calls, but still
+                //could use exports, and module. Avoid doing exports and module
+                //work though if it just needs require.
+                //REQUIRES the function to expect the CommonJS variables in the
+                //order listed below.
+                deps = (callback.length === 1 ? ['require'] : ['require', 'exports', 'module']).concat(deps);
+            }
+        }
+
+        //If in IE 6-8 and hit an anonymous define() call, do the interactive
+        //work.
+        if (useInteractive) {
+            node = currentlyAddingScript || getInteractiveScript();
+            if (node) {
+                if (!name) {
+                    name = node.getAttribute('data-requiremodule');
+                }
+                context = contexts[node.getAttribute('data-requirecontext')];
+            }
+        }
+
+        //Always save off evaluating the def call until the script onload handler.
+        //This allows multiple modules to be in a file without prematurely
+        //tracing dependencies, and allows for anonymous module support,
+        //where the module name is not known until the script onload event
+        //occurs. If no context, use the global queue, and get it processed
+        //in the onscript load callback.
+        (context ? context.defQueue : globalDefQueue).push([name, deps, callback]);
+    };
+
+    define.amd = {
+        jQuery: true
+    };
+
+
+    /**
+     * Executes the text. Normally just uses eval, but can be modified
+     * to use a better, environment-specific call. Only used for transpiling
+     * loader plugins, not for plain JS modules.
+     * @param {String} text the text to execute/evaluate.
+     */
+    req.exec = function (text) {
+        /*jslint evil: true */
+        return eval(text);
+    };
+
+    //Set up with config info.
+    req(cfg);
+}(this));
+
+
+
+    this.requirejsVars = {
+        require: require,
+        requirejs: require,
+        define: define
+    };
+
+    if (env === 'browser') {
+        /**
+ * @license RequireJS rhino Copyright (c) 2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+//sloppy since eval enclosed with use strict causes problems if the source
+//text is not strict-compliant.
+/*jslint sloppy: true, evil: true */
+/*global require, XMLHttpRequest */
+
+(function () {
+    require.load = function (context, moduleName, url) {
+        var xhr = new XMLHttpRequest();
+
+        xhr.open('GET', url, true);
+        xhr.send();
+
+        xhr.onreadystatechange = function () {
+            if (xhr.readyState === 4) {
+                eval(xhr.responseText);
+
+                //Support anonymous modules.
+                context.completeLoad(moduleName);
+            }
+        };
+    };
+}());
+    } else if (env === 'rhino') {
+        /**
+ * @license RequireJS rhino Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint */
+/*global require: false, java: false, load: false */
+
+(function () {
+    'use strict';
+    require.load = function (context, moduleName, url) {
+
+        load(url);
+
+        //Support anonymous modules.
+        context.completeLoad(moduleName);
+    };
+
+}());
+    } else if (env === 'node') {
+        this.requirejsVars.nodeRequire = nodeRequire;
+        require.nodeRequire = nodeRequire;
+
+        /**
+ * @license RequireJS node Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint regexp: false */
+/*global require: false, define: false, requirejsVars: false, process: false */
+
+/**
+ * This adapter assumes that x.js has loaded it and set up
+ * some variables. This adapter just allows limited RequireJS
+ * usage from within the requirejs directory. The general
+ * node adapater is r.js.
+ */
+
+(function () {
+    'use strict';
+
+    var nodeReq = requirejsVars.nodeRequire,
+        req = requirejsVars.require,
+        def = requirejsVars.define,
+        fs = nodeReq('fs'),
+        path = nodeReq('path'),
+        vm = nodeReq('vm'),
+        //In Node 0.7+ existsSync is on fs.
+        exists = fs.existsSync || path.existsSync,
+        hasOwn = Object.prototype.hasOwnProperty;
+
+    function hasProp(obj, prop) {
+        return hasOwn.call(obj, prop);
+    }
+
+    function syncTick(fn) {
+        fn();
+    }
+
+    function makeError(message, moduleName) {
+        var err = new Error(message);
+        err.requireModules = [moduleName];
+        return err;
+    }
+
+    //Supply an implementation that allows synchronous get of a module.
+    req.get = function (context, moduleName, relModuleMap, localRequire) {
+        if (moduleName === "require" || moduleName === "exports" || moduleName === "module") {
+            context.onError(makeError("Explicit require of " + moduleName + " is not allowed.", moduleName));
+        }
+
+        var ret, oldTick,
+            moduleMap = context.makeModuleMap(moduleName, relModuleMap, false, true);
+
+        //Normalize module name, if it contains . or ..
+        moduleName = moduleMap.id;
+
+        if (hasProp(context.defined, moduleName)) {
+            ret = context.defined[moduleName];
+        } else {
+            if (ret === undefined) {
+                //Make sure nextTick for this type of call is sync-based.
+                oldTick = context.nextTick;
+                context.nextTick = syncTick;
+                try {
+                    if (moduleMap.prefix) {
+                        //A plugin, call requirejs to handle it. Now that
+                        //nextTick is syncTick, the require will complete
+                        //synchronously.
+                        localRequire([moduleMap.originalName]);
+
+                        //Now that plugin is loaded, can regenerate the moduleMap
+                        //to get the final, normalized ID.
+                        moduleMap = context.makeModuleMap(moduleMap.originalName, relModuleMap, false, true);
+                        moduleName = moduleMap.id;
+                    } else {
+                        //Try to dynamically fetch it.
+                        req.load(context, moduleName, moduleMap.url);
+
+                        //Enable the module
+                        context.enable(moduleMap, relModuleMap);
+                    }
+
+                    //Break any cycles by requiring it normally, but this will
+                    //finish synchronously
+                    require([moduleName]);
+
+                    //The above calls are sync, so can do the next thing safely.
+                    ret = context.defined[moduleName];
+                } finally {
+                    context.nextTick = oldTick;
+                }
+            }
+        }
+
+        return ret;
+    };
+
+    req.nextTick = function (fn) {
+        process.nextTick(fn);
+    };
+
+    //Add wrapper around the code so that it gets the requirejs
+    //API instead of the Node API, and it is done lexically so
+    //that it survives later execution.
+    req.makeNodeWrapper = function (contents) {
+        return '(function (require, requirejs, define) { ' +
+                contents +
+                '\n}(requirejsVars.require, requirejsVars.requirejs, requirejsVars.define));';
+    };
+
+    req.load = function (context, moduleName, url) {
+        var contents, err,
+            config = context.config;
+
+        if (config.shim[moduleName] && (!config.suppress || !config.suppress.nodeShim)) {
+            console.warn('Shim config not supported in Node, may or may not work. Detected ' +
+                            'for module: ' + moduleName);
+        }
+
+        if (exists(url)) {
+            contents = fs.readFileSync(url, 'utf8');
+
+            contents = req.makeNodeWrapper(contents);
+            try {
+                vm.runInThisContext(contents, fs.realpathSync(url));
+            } catch (e) {
+                err = new Error('Evaluating ' + url + ' as module "' +
+                                moduleName + '" failed with error: ' + e);
+                err.originalError = e;
+                err.moduleName = moduleName;
+                err.requireModules = [moduleName];
+                err.fileName = url;
+                return context.onError(err);
+            }
+        } else {
+            def(moduleName, function () {
+                //Get the original name, since relative requires may be
+                //resolved differently in node (issue #202). Also, if relative,
+                //make it relative to the URL of the item requesting it
+                //(issue #393)
+                var dirName,
+                    map = hasProp(context.registry, moduleName) &&
+                            context.registry[moduleName].map,
+                    parentMap = map && map.parentMap,
+                    originalName = map && map.originalName;
+
+                if (originalName.charAt(0) === '.' && parentMap) {
+                    dirName = parentMap.url.split('/');
+                    dirName.pop();
+                    originalName = dirName.join('/') + '/' + originalName;
+                }
+
+                try {
+                    return (context.config.nodeRequire || req.nodeRequire)(originalName);
+                } catch (e) {
+                    err = new Error('Tried loading "' + moduleName + '" at ' +
+                                     url + ' then tried node\'s require("' +
+                                        originalName + '") and it failed ' +
+                                     'with error: ' + e);
+                    err.originalError = e;
+                    err.moduleName = originalName;
+                    err.requireModules = [moduleName];
+                    return context.onError(err);
+                }
+            });
+        }
+
+        //Support anonymous modules.
+        context.completeLoad(moduleName);
+    };
+
+    //Override to provide the function wrapper for define/require.
+    req.exec = function (text) {
+        /*jslint evil: true */
+        text = req.makeNodeWrapper(text);
+        return eval(text);
+    };
+}());
+
+    } else if (env === 'xpconnect') {
+        /**
+ * @license RequireJS xpconnect Copyright (c) 2013, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint */
+/*global require, load */
+
+(function () {
+    'use strict';
+    require.load = function (context, moduleName, url) {
+
+        load(url);
+
+        //Support anonymous modules.
+        context.completeLoad(moduleName);
+    };
+
+}());
+
+    }
+
+    //Support a default file name to execute. Useful for hosted envs
+    //like Joyent where it defaults to a server.js as the only executed
+    //script. But only do it if this is not an optimization run.
+    if (commandOption !== 'o' && (!fileName || !jsSuffixRegExp.test(fileName))) {
+        fileName = 'main.js';
+    }
+
+    /**
+     * Loads the library files that can be used for the optimizer, or for other
+     * tasks.
+     */
+    function loadLib() {
+        /**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global Packages: false, process: false, window: false, navigator: false,
+  document: false, define: false */
+
+/**
+ * A plugin that modifies any /env/ path to be the right path based on
+ * the host environment. Right now only works for Node, Rhino and browser.
+ */
+(function () {
+    var pathRegExp = /(\/|^)env\/|\{env\}/,
+        env = 'unknown';
+
+    if (typeof Packages !== 'undefined') {
+        env = 'rhino';
+    } else if (typeof process !== 'undefined' && process.versions && !!process.versions.node) {
+        env = 'node';
+    } else if ((typeof navigator !== 'undefined' && typeof document !== 'undefined') ||
+            (typeof importScripts !== 'undefined' && typeof self !== 'undefined')) {
+        env = 'browser';
+    } else if (typeof Components !== 'undefined' && Components.classes && Components.interfaces) {
+        env = 'xpconnect';
+    }
+
+    define('env', {
+        get: function () {
+            return env;
+        },
+
+        load: function (name, req, load, config) {
+            //Allow override in the config.
+            if (config.env) {
+                env = config.env;
+            }
+
+            name = name.replace(pathRegExp, function (match, prefix) {
+                if (match.indexOf('{') === -1) {
+                    return prefix + env + '/';
+                } else {
+                    return env;
+                }
+            });
+
+            req([name], function (mod) {
+                load(mod);
+            });
+        }
+    });
+}());/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint plusplus: true */
+/*global define */
+
+define('lang', function () {
+    'use strict';
+
+    var lang,
+        hasOwn = Object.prototype.hasOwnProperty;
+
+    function hasProp(obj, prop) {
+        return hasOwn.call(obj, prop);
+    }
+
+    lang = {
+        backSlashRegExp: /\\/g,
+        ostring: Object.prototype.toString,
+
+        isArray: Array.isArray || function (it) {
+            return lang.ostring.call(it) === "[object Array]";
+        },
+
+        isFunction: function(it) {
+            return lang.ostring.call(it) === "[object Function]";
+        },
+
+        isRegExp: function(it) {
+            return it && it instanceof RegExp;
+        },
+
+        hasProp: hasProp,
+
+        //returns true if the object does not have an own property prop,
+        //or if it does, it is a falsy value.
+        falseProp: function (obj, prop) {
+            return !hasProp(obj, prop) || !obj[prop];
+        },
+
+        //gets own property value for given prop on object
+        getOwn: function (obj, prop) {
+            return hasProp(obj, prop) && obj[prop];
+        },
+
+        _mixin: function(dest, source, override){
+            var name;
+            for (name in source) {
+                if(source.hasOwnProperty(name) &&
+                    (override || !dest.hasOwnProperty(name))) {
+                    dest[name] = source[name];
+                }
+            }
+
+            return dest; // Object
+        },
+
+        /**
+         * mixin({}, obj1, obj2) is allowed. If the last argument is a boolean,
+         * then the source objects properties are force copied over to dest.
+         */
+        mixin: function(dest){
+            var parameters = Array.prototype.slice.call(arguments),
+                override, i, l;
+
+            if (!dest) { dest = {}; }
+
+            if (parameters.length > 2 && typeof arguments[parameters.length-1] === 'boolean') {
+                override = parameters.pop();
+            }
+
+            for (i = 1, l = parameters.length; i < l; i++) {
+                lang._mixin(dest, parameters[i], override);
+            }
+            return dest; // Object
+        },
+
+
+        /**
+         * Does a type of deep copy. Do not give it anything fancy, best
+         * for basic object copies of objects that also work well as
+         * JSON-serialized things, or has properties pointing to functions.
+         * For non-array/object values, just returns the same object.
+         * @param  {Object} obj      copy properties from this object
+         * @param  {Object} [result] optional result object to use
+         * @return {Object}
+         */
+        deeplikeCopy: function (obj) {
+            var type, result;
+
+            if (lang.isArray(obj)) {
+                result = [];
+                obj.forEach(function(value) {
+                    result.push(lang.deeplikeCopy(value));
+                });
+                return result;
+            }
+
+            type = typeof obj;
+            if (obj === null || obj === undefined || type === 'boolean' ||
+                type === 'string' || type === 'number' || lang.isFunction(obj) ||
+                lang.isRegExp(obj)) {
+                return obj;
+            }
+
+            //Anything else is an object, hopefully.
+            result = {};
+            lang.eachProp(obj, function(value, key) {
+                result[key] = lang.deeplikeCopy(value);
+            });
+            return result;
+        },
+
+        delegate: (function () {
+            // boodman/crockford delegation w/ cornford optimization
+            function TMP() {}
+            return function (obj, props) {
+                TMP.prototype = obj;
+                var tmp = new TMP();
+                TMP.prototype = null;
+                if (props) {
+                    lang.mixin(tmp, props);
+                }
+                return tmp; // Object
+            };
+        }()),
+
+        /**
+         * Helper function for iterating over an array. If the func returns
+         * a true value, it will break out of the loop.
+         */
+        each: function each(ary, func) {
+            if (ary) {
+                var i;
+                for (i = 0; i < ary.length; i += 1) {
+                    if (func(ary[i], i, ary)) {
+                        break;
+                    }
+                }
+            }
+        },
+
+        /**
+         * Cycles over properties in an object and calls a function for each
+         * property value. If the function returns a truthy value, then the
+         * iteration is stopped.
+         */
+        eachProp: function eachProp(obj, func) {
+            var prop;
+            for (prop in obj) {
+                if (hasProp(obj, prop)) {
+                    if (func(obj[prop], prop)) {
+                        break;
+                    }
+                }
+            }
+        },
+
+        //Similar to Function.prototype.bind, but the "this" object is specified
+        //first, since it is easier to read/figure out what "this" will be.
+        bind: function bind(obj, fn) {
+            return function () {
+                return fn.apply(obj, arguments);
+            };
+        },
+
+        //Escapes a content string to be be a string that has characters escaped
+        //for inclusion as part of a JS string.
+        jsEscape: function (content) {
+            return content.replace(/(["'\\])/g, '\\$1')
+                .replace(/[\f]/g, "\\f")
+                .replace(/[\b]/g, "\\b")
+                .replace(/[\n]/g, "\\n")
+                .replace(/[\t]/g, "\\t")
+                .replace(/[\r]/g, "\\r");
+        }
+    };
+    return lang;
+});
+/**
+ * prim 0.0.1 Copyright (c) 2012-2013, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/requirejs/prim for details
+ */
+
+/*global setImmediate, process, setTimeout, define, module */
+
+//Set prime.hideResolutionConflict = true to allow "resolution-races"
+//in promise-tests to pass.
+//Since the goal of prim is to be a small impl for trusted code, it is
+//more important to normally throw in this case so that we can find
+//logic errors quicker.
+
+var prim;
+(function () {
+    'use strict';
+    var op = Object.prototype,
+        hasOwn = op.hasOwnProperty;
+
+    function hasProp(obj, prop) {
+        return hasOwn.call(obj, prop);
+    }
+
+    /**
+     * Helper function for iterating over an array. If the func returns
+     * a true value, it will break out of the loop.
+     */
+    function each(ary, func) {
+        if (ary) {
+            var i;
+            for (i = 0; i < ary.length; i += 1) {
+                if (ary[i]) {
+                    func(ary[i], i, ary);
+                }
+            }
+        }
+    }
+
+    function check(p) {
+        if (hasProp(p, 'e') || hasProp(p, 'v')) {
+            if (!prim.hideResolutionConflict) {
+                throw new Error('nope');
+            }
+            return false;
+        }
+        return true;
+    }
+
+    function notify(ary, value) {
+        prim.nextTick(function () {
+            each(ary, function (item) {
+                item(value);
+            });
+        });
+    }
+
+    prim = function prim() {
+        var p,
+            ok = [],
+            fail = [];
+
+        return (p = {
+            callback: function (yes, no) {
+                if (no) {
+                    p.errback(no);
+                }
+
+                if (hasProp(p, 'v')) {
+                    prim.nextTick(function () {
+                        yes(p.v);
+                    });
+                } else {
+                    ok.push(yes);
+                }
+            },
+
+            errback: function (no) {
+                if (hasProp(p, 'e')) {
+                    prim.nextTick(function () {
+                        no(p.e);
+                    });
+                } else {
+                    fail.push(no);
+                }
+            },
+
+            finished: function () {
+                return hasProp(p, 'e') || hasProp(p, 'v');
+            },
+
+            rejected: function () {
+                return hasProp(p, 'e');
+            },
+
+            resolve: function (v) {
+                if (check(p)) {
+                    p.v = v;
+                    notify(ok, v);
+                }
+                return p;
+            },
+            reject: function (e) {
+                if (check(p)) {
+                    p.e = e;
+                    notify(fail, e);
+                }
+                return p;
+            },
+
+            start: function (fn) {
+                p.resolve();
+                return p.promise.then(fn);
+            },
+
+            promise: {
+                then: function (yes, no) {
+                    var next = prim();
+
+                    p.callback(function (v) {
+                        try {
+                            if (yes && typeof yes === 'function') {
+                                v = yes(v);
+                            }
+
+                            if (v && v.then) {
+                                v.then(next.resolve, next.reject);
+                            } else {
+                                next.resolve(v);
+                            }
+                        } catch (e) {
+                            next.reject(e);
+                        }
+                    }, function (e) {
+                        var err;
+
+                        try {
+                            if (!no || typeof no !== 'function') {
+                                next.reject(e);
+                            } else {
+                                err = no(e);
+
+                                if (err && err.then) {
+                                    err.then(next.resolve, next.reject);
+                                } else {
+                                    next.resolve(err);
+                                }
+                            }
+                        } catch (e2) {
+                            next.reject(e2);
+                        }
+                    });
+
+                    return next.promise;
+                },
+
+                fail: function (no) {
+                    return p.promise.then(null, no);
+                },
+
+                end: function () {
+                    p.errback(function (e) {
+                        throw e;
+                    });
+                }
+            }
+        });
+    };
+
+    prim.serial = function (ary) {
+        var result = prim().resolve().promise;
+        each(ary, function (item) {
+            result = result.then(function () {
+                return item();
+            });
+        });
+        return result;
+    };
+
+    prim.nextTick = typeof setImmediate === 'function' ? setImmediate :
+        (typeof process !== 'undefined' && process.nextTick ?
+            process.nextTick : (typeof setTimeout !== 'undefined' ?
+                function (fn) {
+                setTimeout(fn, 0);
+            } : function (fn) {
+        fn();
+    }));
+
+    if (typeof define === 'function' && define.amd) {
+        define('prim', function () { return prim; });
+    } else if (typeof module !== 'undefined' && module.exports) {
+        module.exports = prim;
+    }
+}());
+if(env === 'browser') {
+/**
+ * @license RequireJS Copyright (c) 2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, load: false */
+
+//Just a stub for use with uglify's consolidator.js
+define('browser/assert', function () {
+    return {};
+});
+
+}
+
+if(env === 'node') {
+/**
+ * @license RequireJS Copyright (c) 2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, load: false */
+
+//Needed so that rhino/assert can return a stub for uglify's consolidator.js
+define('node/assert', ['assert'], function (assert) {
+    return assert;
+});
+
+}
+
+if(env === 'rhino') {
+/**
+ * @license RequireJS Copyright (c) 2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, load: false */
+
+//Just a stub for use with uglify's consolidator.js
+define('rhino/assert', function () {
+    return {};
+});
+
+}
+
+if(env === 'xpconnect') {
+/**
+ * @license RequireJS Copyright (c) 2013, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, load: false */
+
+//Just a stub for use with uglify's consolidator.js
+define('xpconnect/assert', function () {
+    return {};
+});
+
+}
+
+if(env === 'browser') {
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, process: false */
+
+define('browser/args', function () {
+    //Always expect config via an API call
+    return [];
+});
+
+}
+
+if(env === 'node') {
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, process: false */
+
+define('node/args', function () {
+    //Do not return the "node" or "r.js" arguments
+    var args = process.argv.slice(2);
+
+    //Ignore any command option used for main x.js branching
+    if (args[0] && args[0].indexOf('-') === 0) {
+        args = args.slice(1);
+    }
+
+    return args;
+});
+
+}
+
+if(env === 'rhino') {
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, process: false */
+
+var jsLibRhinoArgs = (typeof rhinoArgs !== 'undefined' && rhinoArgs) || [].concat(Array.prototype.slice.call(arguments, 0));
+
+define('rhino/args', function () {
+    var args = jsLibRhinoArgs;
+
+    //Ignore any command option used for main x.js branching
+    if (args[0] && args[0].indexOf('-') === 0) {
+        args = args.slice(1);
+    }
+
+    return args;
+});
+
+}
+
+if(env === 'xpconnect') {
+/**
+ * @license Copyright (c) 2013, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define, xpconnectArgs */
+
+var jsLibXpConnectArgs = (typeof xpconnectArgs !== 'undefined' && xpconnectArgs) || [].concat(Array.prototype.slice.call(arguments, 0));
+
+define('xpconnect/args', function () {
+    var args = jsLibXpConnectArgs;
+
+    //Ignore any command option used for main x.js branching
+    if (args[0] && args[0].indexOf('-') === 0) {
+        args = args.slice(1);
+    }
+
+    return args;
+});
+
+}
+
+if(env === 'browser') {
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, console: false */
+
+define('browser/load', ['./file'], function (file) {
+    function load(fileName) {
+        eval(file.readFile(fileName));
+    }
+
+    return load;
+});
+
+}
+
+if(env === 'node') {
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, console: false */
+
+define('node/load', ['fs'], function (fs) {
+    function load(fileName) {
+        var contents = fs.readFileSync(fileName, 'utf8');
+        process.compile(contents, fileName);
+    }
+
+    return load;
+});
+
+}
+
+if(env === 'rhino') {
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, load: false */
+
+define('rhino/load', function () {
+    return load;
+});
+
+}
+
+if(env === 'xpconnect') {
+/**
+ * @license RequireJS Copyright (c) 2013, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, load: false */
+
+define('xpconnect/load', function () {
+    return load;
+});
+
+}
+
+if(env === 'browser') {
+/**
+ * @license Copyright (c) 2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint sloppy: true, nomen: true */
+/*global require, define, console, XMLHttpRequest, requirejs, location */
+
+define('browser/file', ['prim'], function (prim) {
+
+    var file,
+        currDirRegExp = /^\.(\/|$)/;
+
+    function frontSlash(path) {
+        return path.replace(/\\/g, '/');
+    }
+
+    function exists(path) {
+        var status, xhr = new XMLHttpRequest();
+
+        //Oh yeah, that is right SYNC IO. Behold its glory
+        //and horrible blocking behavior.
+        xhr.open('HEAD', path, false);
+        xhr.send();
+        status = xhr.status;
+
+        return status === 200 || status === 304;
+    }
+
+    function mkDir(dir) {
+        console.log('mkDir is no-op in browser');
+    }
+
+    function mkFullDir(dir) {
+        console.log('mkFullDir is no-op in browser');
+    }
+
+    file = {
+        backSlashRegExp: /\\/g,
+        exclusionRegExp: /^\./,
+        getLineSeparator: function () {
+            return '/';
+        },
+
+        exists: function (fileName) {
+            return exists(fileName);
+        },
+
+        parent: function (fileName) {
+            var parts = fileName.split('/');
+            parts.pop();
+            return parts.join('/');
+        },
+
+        /**
+         * Gets the absolute file path as a string, normalized
+         * to using front slashes for path separators.
+         * @param {String} fileName
+         */
+        absPath: function (fileName) {
+            var dir;
+            if (currDirRegExp.test(fileName)) {
+                dir = frontSlash(location.href);
+                if (dir.indexOf('/') !== -1) {
+                    dir = dir.split('/');
+
+                    //Pull off protocol and host, just want
+                    //to allow paths (other build parts, like
+                    //require._isSupportedBuildUrl do not support
+                    //full URLs), but a full path from
+                    //the root.
+                    dir.splice(0, 3);
+
+                    dir.pop();
+                    dir = '/' + dir.join('/');
+                }
+
+                fileName = dir + fileName.substring(1);
+            }
+
+            return fileName;
+        },
+
+        normalize: function (fileName) {
+            return fileName;
+        },
+
+        isFile: function (path) {
+            return true;
+        },
+
+        isDirectory: function (path) {
+            return false;
+        },
+
+        getFilteredFileList: function (startDir, regExpFilters, makeUnixPaths) {
+            console.log('file.getFilteredFileList is no-op in browser');
+        },
+
+        copyDir: function (srcDir, destDir, regExpFilter, onlyCopyNew) {
+            console.log('file.copyDir is no-op in browser');
+
+        },
+
+        copyFile: function (srcFileName, destFileName, onlyCopyNew) {
+            console.log('file.copyFile is no-op in browser');
+        },
+
+        /**
+         * Renames a file. May fail if "to" already exists or is on another drive.
+         */
+        renameFile: function (from, to) {
+            console.log('file.renameFile is no-op in browser');
+        },
+
+        /**
+         * Reads a *text* file.
+         */
+        readFile: function (path, encoding) {
+            var xhr = new XMLHttpRequest();
+
+            //Oh yeah, that is right SYNC IO. Behold its glory
+            //and horrible blocking behavior.
+            xhr.open('GET', path, false);
+            xhr.send();
+
+            return xhr.responseText;
+        },
+
+        readFileAsync: function (path, encoding) {
+            var xhr = new XMLHttpRequest(),
+                d = prim();
+
+            xhr.open('GET', path, true);
+            xhr.send();
+
+            xhr.onreadystatechange = function () {
+                if (xhr.readyState === 4) {
+                    if (xhr.status > 400) {
+                        d.reject(new Error('Status: ' + xhr.status + ': ' + xhr.statusText));
+                    } else {
+                        d.resolve(xhr.responseText);
+                    }
+                }
+            };
+
+            return d.promise;
+        },
+
+        saveUtf8File: function (fileName, fileContents) {
+            //summary: saves a *text* file using UTF-8 encoding.
+            file.saveFile(fileName, fileContents, "utf8");
+        },
+
+        saveFile: function (fileName, fileContents, encoding) {
+            requirejs.browser.saveFile(fileName, fileContents, encoding);
+        },
+
+        deleteFile: function (fileName) {
+            console.log('file.deleteFile is no-op in browser');
+        },
+
+        /**
+         * Deletes any empty directories under the given directory.
+         */
+        deleteEmptyDirs: function (startDir) {
+            console.log('file.deleteEmptyDirs is no-op in browser');
+        }
+    };
+
+    return file;
+
+});
+
+}
+
+if(env === 'node') {
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint plusplus: false, octal:false, strict: false */
+/*global define: false, process: false */
+
+define('node/file', ['fs', 'path', 'prim'], function (fs, path, prim) {
+
+    var isWindows = process.platform === 'win32',
+        windowsDriveRegExp = /^[a-zA-Z]\:\/$/,
+        file;
+
+    function frontSlash(path) {
+        return path.replace(/\\/g, '/');
+    }
+
+    function exists(path) {
+        if (isWindows && path.charAt(path.length - 1) === '/' &&
+            path.charAt(path.length - 2) !== ':') {
+            path = path.substring(0, path.length - 1);
+        }
+
+        try {
+            fs.statSync(path);
+            return true;
+        } catch (e) {
+            return false;
+        }
+    }
+
+    function mkDir(dir) {
+        if (!exists(dir) && (!isWindows || !windowsDriveRegExp.test(dir))) {
+            fs.mkdirSync(dir, 511);
+        }
+    }
+
+    function mkFullDir(dir) {
+        var parts = dir.split('/'),
+            currDir = '',
+            first = true;
+
+        parts.forEach(function (part) {
+            //First part may be empty string if path starts with a slash.
+            currDir += part + '/';
+            first = false;
+
+            if (part) {
+                mkDir(currDir);
+            }
+        });
+    }
+
+    file = {
+        backSlashRegExp: /\\/g,
+        exclusionRegExp: /^\./,
+        getLineSeparator: function () {
+            return '/';
+        },
+
+        exists: function (fileName) {
+            return exists(fileName);
+        },
+
+        parent: function (fileName) {
+            var parts = fileName.split('/');
+            parts.pop();
+            return parts.join('/');
+        },
+
+        /**
+         * Gets the absolute file path as a string, normalized
+         * to using front slashes for path separators.
+         * @param {String} fileName
+         */
+        absPath: function (fileName) {
+            return frontSlash(path.normalize(frontSlash(fs.realpathSync(fileName))));
+        },
+
+        normalize: function (fileName) {
+            return frontSlash(path.normalize(fileName));
+        },
+
+        isFile: function (path) {
+            return fs.statSync(path).isFile();
+        },
+
+        isDirectory: function (path) {
+            return fs.statSync(path).isDirectory();
+        },
+
+        getFilteredFileList: function (/*String*/startDir, /*RegExp*/regExpFilters, /*boolean?*/makeUnixPaths) {
+            //summary: Recurses startDir and finds matches to the files that match regExpFilters.include
+            //and do not match regExpFilters.exclude. Or just one regexp can be passed in for regExpFilters,
+            //and it will be treated as the "include" case.
+            //Ignores files/directories that start with a period (.) unless exclusionRegExp
+            //is set to another value.
+            var files = [], topDir, regExpInclude, regExpExclude, dirFileArray,
+                i, stat, filePath, ok, dirFiles, fileName;
+
+            topDir = startDir;
+
+            regExpInclude = regExpFilters.include || regExpFilters;
+            regExpExclude = regExpFilters.exclude || null;
+
+            if (file.exists(topDir)) {
+                dirFileArray = fs.readdirSync(topDir);
+                for (i = 0; i < dirFileArray.length; i++) {
+                    fileName = dirFileArray[i];
+                    filePath = path.join(topDir, fileName);
+                    stat = fs.statSync(filePath);
+                    if (stat.isFile()) {
+                        if (makeUnixPaths) {
+                            //Make sure we have a JS string.
+                            if (filePath.indexOf("/") === -1) {
+                                filePath = frontSlash(filePath);
+                            }
+                        }
+
+                        ok = true;
+                        if (regExpInclude) {
+                            ok = filePath.match(regExpInclude);
+                        }
+                        if (ok && regExpExclude) {
+                            ok = !filePath.match(regExpExclude);
+                        }
+
+                        if (ok && (!file.exclusionRegExp ||
+                            !file.exclusionRegExp.test(fileName))) {
+                            files.push(filePath);
+                        }
+                    } else if (stat.isDirectory() &&
+                              (!file.exclusionRegExp || !file.exclusionRegExp.test(fileName))) {
+                        dirFiles = this.getFilteredFileList(filePath, regExpFilters, makeUnixPaths);
+                        files.push.apply(files, dirFiles);
+                    }
+                }
+            }
+
+            return files; //Array
+        },
+
+        copyDir: function (/*String*/srcDir, /*String*/destDir, /*RegExp?*/regExpFilter, /*boolean?*/onlyCopyNew) {
+            //summary: copies files from srcDir to destDir using the regExpFilter to determine if the
+            //file should be copied. Returns a list file name strings of the destinations that were copied.
+            regExpFilter = regExpFilter || /\w/;
+
+            //Normalize th directory names, but keep front slashes.
+            //path module on windows now returns backslashed paths.
+            srcDir = frontSlash(path.normalize(srcDir));
+            destDir = frontSlash(path.normalize(destDir));
+
+            var fileNames = file.getFilteredFileList(srcDir, regExpFilter, true),
+            copiedFiles = [], i, srcFileName, destFileName;
+
+            for (i = 0; i < fileNames.length; i++) {
+                srcFileName = fileNames[i];
+                destFileName = srcFileName.replace(srcDir, destDir);
+
+                if (file.copyFile(srcFileName, destFileName, onlyCopyNew)) {
+                    copiedFiles.push(destFileName);
+                }
+            }
+
+            return copiedFiles.length ? copiedFiles : null; //Array or null
+        },
+
+        copyFile: function (/*String*/srcFileName, /*String*/destFileName, /*boolean?*/onlyCopyNew) {
+            //summary: copies srcFileName to destFileName. If onlyCopyNew is set, it only copies the file if
+            //srcFileName is newer than destFileName. Returns a boolean indicating if the copy occurred.
+            var parentDir;
+
+            //logger.trace("Src filename: " + srcFileName);
+            //logger.trace("Dest filename: " + destFileName);
+
+            //If onlyCopyNew is true, then compare dates and only copy if the src is newer
+            //than dest.
+            if (onlyCopyNew) {
+                if (file.exists(destFileName) && fs.statSync(destFileName).mtime.getTime() >= fs.statSync(srcFileName).mtime.getTime()) {
+                    return false; //Boolean
+                }
+            }
+
+            //Make sure destination dir exists.
+            parentDir = path.dirname(destFileName);
+            if (!file.exists(parentDir)) {
+                mkFullDir(parentDir);
+            }
+
+            fs.writeFileSync(destFileName, fs.readFileSync(srcFileName, 'binary'), 'binary');
+
+            return true; //Boolean
+        },
+
+        /**
+         * Renames a file. May fail if "to" already exists or is on another drive.
+         */
+        renameFile: function (from, to) {
+            return fs.renameSync(from, to);
+        },
+
+        /**
+         * Reads a *text* file.
+         */
+        readFile: function (/*String*/path, /*String?*/encoding) {
+            if (encoding === 'utf-8') {
+                encoding = 'utf8';
+            }
+            if (!encoding) {
+                encoding = 'utf8';
+            }
+
+            var text = fs.readFileSync(path, encoding);
+
+            //Hmm, would not expect to get A BOM, but it seems to happen,
+            //remove it just in case.
+            if (text.indexOf('\uFEFF') === 0) {
+                text = text.substring(1, text.length);
+            }
+
+            return text;
+        },
+
+        readFileAsync: function (path, encoding) {
+            var d = prim();
+            try {
+                d.resolve(file.readFile(path, encoding));
+            } catch (e) {
+                d.reject(e);
+            }
+            return d.promise;
+        },
+
+        saveUtf8File: function (/*String*/fileName, /*String*/fileContents) {
+            //summary: saves a *text* file using UTF-8 encoding.
+            file.saveFile(fileName, fileContents, "utf8");
+        },
+
+        saveFile: function (/*String*/fileName, /*String*/fileContents, /*String?*/encoding) {
+            //summary: saves a *text* file.
+            var parentDir;
+
+            if (encoding === 'utf-8') {
+                encoding = 'utf8';
+            }
+            if (!encoding) {
+                encoding = 'utf8';
+            }
+
+            //Make sure destination directories exist.
+            parentDir = path.dirname(fileName);
+            if (!file.exists(parentDir)) {
+                mkFullDir(parentDir);
+            }
+
+            fs.writeFileSync(fileName, fileContents, encoding);
+        },
+
+        deleteFile: function (/*String*/fileName) {
+            //summary: deletes a file or directory if it exists.
+            var files, i, stat;
+            if (file.exists(fileName)) {
+                stat = fs.statSync(fileName);
+                if (stat.isDirectory()) {
+                    files = fs.readdirSync(fileName);
+                    for (i = 0; i < files.length; i++) {
+                        this.deleteFile(path.join(fileName, files[i]));
+                    }
+                    fs.rmdirSync(fileName);
+                } else {
+                    fs.unlinkSync(fileName);
+                }
+            }
+        },
+
+
+        /**
+         * Deletes any empty directories under the given directory.
+         */
+        deleteEmptyDirs: function (startDir) {
+            var dirFileArray, i, fileName, filePath, stat;
+
+            if (file.exists(startDir)) {
+                dirFileArray = fs.readdirSync(startDir);
+                for (i = 0; i < dirFileArray.length; i++) {
+                    fileName = dirFileArray[i];
+                    filePath = path.join(startDir, fileName);
+                    stat = fs.statSync(filePath);
+                    if (stat.isDirectory()) {
+                        file.deleteEmptyDirs(filePath);
+                    }
+                }
+
+                //If directory is now empty, remove it.
+                if (fs.readdirSync(startDir).length ===  0) {
+                    file.deleteFile(startDir);
+                }
+            }
+        }
+    };
+
+    return file;
+
+});
+
+}
+
+if(env === 'rhino') {
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+//Helper functions to deal with file I/O.
+
+/*jslint plusplus: false */
+/*global java: false, define: false */
+
+define('rhino/file', ['prim'], function (prim) {
+    var file = {
+        backSlashRegExp: /\\/g,
+
+        exclusionRegExp: /^\./,
+
+        getLineSeparator: function () {
+            return file.lineSeparator;
+        },
+
+        lineSeparator: java.lang.System.getProperty("line.separator"), //Java String
+
+        exists: function (fileName) {
+            return (new java.io.File(fileName)).exists();
+        },
+
+        parent: function (fileName) {
+            return file.absPath((new java.io.File(fileName)).getParentFile());
+        },
+
+        normalize: function (fileName) {
+            return file.absPath(fileName);
+        },
+
+        isFile: function (path) {
+            return (new java.io.File(path)).isFile();
+        },
+
+        isDirectory: function (path) {
+            return (new java.io.File(path)).isDirectory();
+        },
+
+        /**
+         * Gets the absolute file path as a string, normalized
+         * to using front slashes for path separators.
+         * @param {java.io.File||String} file
+         */
+        absPath: function (fileObj) {
+            if (typeof fileObj === "string") {
+                fileObj = new java.io.File(fileObj);
+            }
+            return (fileObj.getCanonicalPath() + "").replace(file.backSlashRegExp, "/");
+        },
+
+        getFilteredFileList: function (/*String*/startDir, /*RegExp*/regExpFilters, /*boolean?*/makeUnixPaths, /*boolean?*/startDirIsJavaObject) {
+            //summary: Recurses startDir and finds matches to the files that match regExpFilters.include
+            //and do not match regExpFilters.exclude. Or just one regexp can be passed in for regExpFilters,
+            //and it will be treated as the "include" case.
+            //Ignores files/directories that start with a period (.) unless exclusionRegExp
+            //is set to another value.
+            var files = [], topDir, regExpInclude, regExpExclude, dirFileArray,
+                i, fileObj, filePath, ok, dirFiles;
+
+            topDir = startDir;
+            if (!startDirIsJavaObject) {
+                topDir = new java.io.File(startDir);
+            }
+
+            regExpInclude = regExpFilters.include || regExpFilters;
+            regExpExclude = regExpFilters.exclude || null;
+
+            if (topDir.exists()) {
+                dirFileArray = topDir.listFiles();
+                for (i = 0; i < dirFileArray.length; i++) {
+                    fileObj = dirFileArray[i];
+                    if (fileObj.isFile()) {
+                        filePath = fileObj.getPath();
+                        if (makeUnixPaths) {
+                            //Make sure we have a JS string.
+                            filePath = String(filePath);
+                            if (filePath.indexOf("/") === -1) {
+                                filePath = filePath.replace(/\\/g, "/");
+                            }
+                        }
+
+                        ok = true;
+                        if (regExpInclude) {
+                            ok = filePath.match(regExpInclude);
+                        }
+                        if (ok && regExpExclude) {
+                            ok = !filePath.match(regExpExclude);
+                        }
+
+                        if (ok && (!file.exclusionRegExp ||
+                            !file.exclusionRegExp.test(fileObj.getName()))) {
+                            files.push(filePath);
+                        }
+                    } else if (fileObj.isDirectory() &&
+                              (!file.exclusionRegExp || !file.exclusionRegExp.test(fileObj.getName()))) {
+                        dirFiles = this.getFilteredFileList(fileObj, regExpFilters, makeUnixPaths, true);
+                        files.push.apply(files, dirFiles);
+                    }
+                }
+            }
+
+            return files; //Array
+        },
+
+        copyDir: function (/*String*/srcDir, /*String*/destDir, /*RegExp?*/regExpFilter, /*boolean?*/onlyCopyNew) {
+            //summary: copies files from srcDir to destDir using the regExpFilter to determine if the
+            //file should be copied. Returns a list file name strings of the destinations that were copied.
+            regExpFilter = regExpFilter || /\w/;
+
+            var fileNames = file.getFilteredFileList(srcDir, regExpFilter, true),
+            copiedFiles = [], i, srcFileName, destFileName;
+
+            for (i = 0; i < fileNames.length; i++) {
+                srcFileName = fileNames[i];
+                destFileName = srcFileName.replace(srcDir, destDir);
+
+                if (file.copyFile(srcFileName, destFileName, onlyCopyNew)) {
+                    copiedFiles.push(destFileName);
+                }
+            }
+
+            return copiedFiles.length ? copiedFiles : null; //Array or null
+        },
+
+        copyFile: function (/*String*/srcFileName, /*String*/destFileName, /*boolean?*/onlyCopyNew) {
+            //summary: copies srcFileName to destFileName. If onlyCopyNew is set, it only copies the file if
+            //srcFileName is newer than destFileName. Returns a boolean indicating if the copy occurred.
+            var destFile = new java.io.File(destFileName), srcFile, parentDir,
+            srcChannel, destChannel;
+
+            //logger.trace("Src filename: " + srcFileName);
+            //logger.trace("Dest filename: " + destFileName);
+
+            //If onlyCopyNew is true, then compare dates and only copy if the src is newer
+            //than dest.
+            if (onlyCopyNew) {
+                srcFile = new java.io.File(srcFileName);
+                if (destFile.exists() && destFile.lastModified() >= srcFile.lastModified()) {
+                    return false; //Boolean
+                }
+            }
+
+            //Make sure destination dir exists.
+            parentDir = destFile.getParentFile();
+            if (!parentDir.exists()) {
+                if (!parentDir.mkdirs()) {
+                    throw "Could not create directory: " + parentDir.getCanonicalPath();
+                }
+            }
+
+            //Java's version of copy file.
+            srcChannel = new java.io.FileInputStream(srcFileName).getChannel();
+            destChannel = new java.io.FileOutputStream(destFileName).getChannel();
+            destChannel.transferFrom(srcChannel, 0, srcChannel.size());
+            srcChannel.close();
+            destChannel.close();
+
+            return true; //Boolean
+        },
+
+        /**
+         * Renames a file. May fail if "to" already exists or is on another drive.
+         */
+        renameFile: function (from, to) {
+            return (new java.io.File(from)).renameTo((new java.io.File(to)));
+        },
+
+        readFile: function (/*String*/path, /*String?*/encoding) {
+            //A file read function that can deal with BOMs
+            encoding = encoding || "utf-8";
+            var fileObj = new java.io.File(path),
+                    input = new java.io.BufferedReader(new java.io.InputStreamReader(new java.io.FileInputStream(fileObj), encoding)),
+                    stringBuffer, line;
+            try {
+                stringBuffer = new java.lang.StringBuffer();
+                line = input.readLine();
+
+                // Byte Order Mark (BOM) - The Unicode Standard, version 3.0, page 324
+                // http://www.unicode.org/faq/utf_bom.html
+
+                // Note that when we use utf-8, the BOM should appear as "EF BB BF", but it doesn't due to this bug in the JDK:
+                // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4508058
+                if (line && line.length() && line.charAt(0) === 0xfeff) {
+                    // Eat the BOM, since we've already found the encoding on this file,
+                    // and we plan to concatenating this buffer with others; the BOM should
+                    // only appear at the top of a file.
+                    line = line.substring(1);
+                }
+                while (line !== null) {
+                    stringBuffer.append(line);
+                    stringBuffer.append(file.lineSeparator);
+                    line = input.readLine();
+                }
+                //Make sure we return a JavaScript string and not a Java string.
+                return String(stringBuffer.toString()); //String
+            } finally {
+                input.close();
+            }
+        },
+
+        readFileAsync: function (path, encoding) {
+            var d = prim();
+            try {
+                d.resolve(file.readFile(path, encoding));
+            } catch (e) {
+                d.reject(e);
+            }
+            return d.promise;
+        },
+
+        saveUtf8File: function (/*String*/fileName, /*String*/fileContents) {
+            //summary: saves a file using UTF-8 encoding.
+            file.saveFile(fileName, fileContents, "utf-8");
+        },
+
+        saveFile: function (/*String*/fileName, /*String*/fileContents, /*String?*/encoding) {
+            //summary: saves a file.
+            var outFile = new java.io.File(fileName), outWriter, parentDir, os;
+
+            parentDir = outFile.getAbsoluteFile().getParentFile();
+            if (!parentDir.exists()) {
+                if (!parentDir.mkdirs()) {
+                    throw "Could not create directory: " + parentDir.getAbsolutePath();
+                }
+            }
+
+            if (encoding) {
+                outWriter = new java.io.OutputStreamWriter(new java.io.FileOutputStream(outFile), encoding);
+            } else {
+                outWriter = new java.io.OutputStreamWriter(new java.io.FileOutputStream(outFile));
+            }
+
+            os = new java.io.BufferedWriter(outWriter);
+            try {
+                os.write(fileContents);
+            } finally {
+                os.close();
+            }
+        },
+
+        deleteFile: function (/*String*/fileName) {
+            //summary: deletes a file or directory if it exists.
+            var fileObj = new java.io.File(fileName), files, i;
+            if (fileObj.exists()) {
+                if (fileObj.isDirectory()) {
+                    files = fileObj.listFiles();
+                    for (i = 0; i < files.length; i++) {
+                        this.deleteFile(files[i]);
+                    }
+                }
+                fileObj["delete"]();
+            }
+        },
+
+        /**
+         * Deletes any empty directories under the given directory.
+         * The startDirIsJavaObject is private to this implementation's
+         * recursion needs.
+         */
+        deleteEmptyDirs: function (startDir, startDirIsJavaObject) {
+            var topDir = startDir,
+                dirFileArray, i, fileObj;
+
+            if (!startDirIsJavaObject) {
+                topDir = new java.io.File(startDir);
+            }
+
+            if (topDir.exists()) {
+                dirFileArray = topDir.listFiles();
+                for (i = 0; i < dirFileArray.length; i++) {
+                    fileObj = dirFileArray[i];
+                    if (fileObj.isDirectory()) {
+                        file.deleteEmptyDirs(fileObj, true);
+                    }
+                }
+
+                //If the directory is empty now, delete it.
+                if (topDir.listFiles().length === 0) {
+                    file.deleteFile(String(topDir.getPath()));
+                }
+            }
+        }
+    };
+
+    return file;
+});
+
+}
+
+if(env === 'xpconnect') {
+/**
+ * @license RequireJS Copyright (c) 2013, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+//Helper functions to deal with file I/O.
+
+/*jslint plusplus: false */
+/*global define, Components, xpcUtil */
+
+define('xpconnect/file', ['prim'], function (prim) {
+    var file,
+        Cc = Components.classes,
+        Ci = Components.interfaces,
+        //Depends on xpcUtil which is set up in x.js
+        xpfile = xpcUtil.xpfile;
+
+    function mkFullDir(dirObj) {
+        //1 is DIRECTORY_TYPE, 511 is 0777 permissions
+        if (!dirObj.exists()) {
+            dirObj.create(1, 511);
+        }
+    }
+
+    file = {
+        backSlashRegExp: /\\/g,
+
+        exclusionRegExp: /^\./,
+
+        getLineSeparator: function () {
+            return file.lineSeparator;
+        },
+
+        lineSeparator: ('@mozilla.org/windows-registry-key;1' in Cc) ?
+                        '\r\n' : '\n',
+
+        exists: function (fileName) {
+            return xpfile(fileName).exists();
+        },
+
+        parent: function (fileName) {
+            return xpfile(fileName).parent;
+        },
+
+        normalize: function (fileName) {
+            return file.absPath(fileName);
+        },
+
+        isFile: function (path) {
+            return xpfile(path).isFile();
+        },
+
+        isDirectory: function (path) {
+            return xpfile(path).isDirectory();
+        },
+
+        /**
+         * Gets the absolute file path as a string, normalized
+         * to using front slashes for path separators.
+         * @param {java.io.File||String} file
+         */
+        absPath: function (fileObj) {
+            if (typeof fileObj === "string") {
+                fileObj = xpfile(fileObj);
+            }
+            return fileObj.path;
+        },
+
+        getFilteredFileList: function (/*String*/startDir, /*RegExp*/regExpFilters, /*boolean?*/makeUnixPaths, /*boolean?*/startDirIsObject) {
+            //summary: Recurses startDir and finds matches to the files that match regExpFilters.include
+            //and do not match regExpFilters.exclude. Or just one regexp can be passed in for regExpFilters,
+            //and it will be treated as the "include" case.
+            //Ignores files/directories that start with a period (.) unless exclusionRegExp
+            //is set to another value.
+            var files = [], topDir, regExpInclude, regExpExclude, dirFileArray,
+                fileObj, filePath, ok, dirFiles;
+
+            topDir = startDir;
+            if (!startDirIsObject) {
+                topDir = xpfile(startDir);
+            }
+
+            regExpInclude = regExpFilters.include || regExpFilters;
+            regExpExclude = regExpFilters.exclude || null;
+
+            if (topDir.exists()) {
+                dirFileArray = topDir.directoryEntries;
+                while (dirFileArray.hasMoreElements()) {
+                    fileObj = dirFileArray.getNext().QueryInterface(Ci.nsILocalFile);
+                    if (fileObj.isFile()) {
+                        filePath = fileObj.path;
+                        if (makeUnixPaths) {
+                            if (filePath.indexOf("/") === -1) {
+                                filePath = filePath.replace(/\\/g, "/");
+                            }
+                        }
+
+                        ok = true;
+                        if (regExpInclude) {
+                            ok = filePath.match(regExpInclude);
+                        }
+                        if (ok && regExpExclude) {
+                            ok = !filePath.match(regExpExclude);
+                        }
+
+                        if (ok && (!file.exclusionRegExp ||
+                            !file.exclusionRegExp.test(fileObj.leafName))) {
+                            files.push(filePath);
+                        }
+                    } else if (fileObj.isDirectory() &&
+                              (!file.exclusionRegExp || !file.exclusionRegExp.test(fileObj.leafName))) {
+                        dirFiles = this.getFilteredFileList(fileObj, regExpFilters, makeUnixPaths, true);
+                        files.push.apply(files, dirFiles);
+                    }
+                }
+            }
+
+            return files; //Array
+        },
+
+        copyDir: function (/*String*/srcDir, /*String*/destDir, /*RegExp?*/regExpFilter, /*boolean?*/onlyCopyNew) {
+            //summary: copies files from srcDir to destDir using the regExpFilter to determine if the
+            //file should be copied. Returns a list file name strings of the destinations that were copied.
+            regExpFilter = regExpFilter || /\w/;
+
+            var fileNames = file.getFilteredFileList(srcDir, regExpFilter, true),
+            copiedFiles = [], i, srcFileName, destFileName;
+
+            for (i = 0; i < fileNames.length; i += 1) {
+                srcFileName = fileNames[i];
+                destFileName = srcFileName.replace(srcDir, destDir);
+
+                if (file.copyFile(srcFileName, destFileName, onlyCopyNew)) {
+                    copiedFiles.push(destFileName);
+                }
+            }
+
+            return copiedFiles.length ? copiedFiles : null; //Array or null
+        },
+
+        copyFile: function (/*String*/srcFileName, /*String*/destFileName, /*boolean?*/onlyCopyNew) {
+            //summary: copies srcFileName to destFileName. If onlyCopyNew is set, it only copies the file if
+            //srcFileName is newer than destFileName. Returns a boolean indicating if the copy occurred.
+            var destFile = xpfile(destFileName),
+            srcFile = xpfile(srcFileName);
+
+            //logger.trace("Src filename: " + srcFileName);
+            //logger.trace("Dest filename: " + destFileName);
+
+            //If onlyCopyNew is true, then compare dates and only copy if the src is newer
+            //than dest.
+            if (onlyCopyNew) {
+                if (destFile.exists() && destFile.lastModifiedTime >= srcFile.lastModifiedTime) {
+                    return false; //Boolean
+                }
+            }
+
+            srcFile.copyTo(destFile.parent, destFile.leafName);
+
+            return true; //Boolean
+        },
+
+        /**
+         * Renames a file. May fail if "to" already exists or is on another drive.
+         */
+        renameFile: function (from, to) {
+            var toFile = xpfile(to);
+            return xpfile(from).moveTo(toFile.parent, toFile.leafName);
+        },
+
+        readFile: xpcUtil.readFile,
+
+        readFileAsync: function (path, encoding) {
+            var d = prim();
+            try {
+                d.resolve(file.readFile(path, encoding));
+            } catch (e) {
+                d.reject(e);
+            }
+            return d.promise;
+        },
+
+        saveUtf8File: function (/*String*/fileName, /*String*/fileContents) {
+            //summary: saves a file using UTF-8 encoding.
+            file.saveFile(fileName, fileContents, "utf-8");
+        },
+
+        saveFile: function (/*String*/fileName, /*String*/fileContents, /*String?*/encoding) {
+            var outStream, convertStream,
+                fileObj = xpfile(fileName);
+
+            mkFullDir(fileObj.parent);
+
+            try {
+                outStream = Cc['@mozilla.org/network/file-output-stream;1']
+                             .createInstance(Ci.nsIFileOutputStream);
+                //438 is decimal for 0777
+                outStream.init(fileObj, 0x02 | 0x08 | 0x20, 511, 0);
+
+                convertStream = Cc['@mozilla.org/intl/converter-output-stream;1']
+                                  .createInstance(Ci.nsIConverterOutputStream);
+
+                convertStream.init(outStream, encoding, 0, 0);
+                convertStream.writeString(fileContents);
+            } catch (e) {
+                throw new Error((fileObj && fileObj.path || '') + ': ' + e);
+            } finally {
+                if (convertStream) {
+                    convertStream.close();
+                }
+                if (outStream) {
+                    outStream.close();
+                }
+            }
+        },
+
+        deleteFile: function (/*String*/fileName) {
+            //summary: deletes a file or directory if it exists.
+            var fileObj = xpfile(fileName);
+            if (fileObj.exists()) {
+                fileObj.remove(true);
+            }
+        },
+
+        /**
+         * Deletes any empty directories under the given directory.
+         * The startDirIsJavaObject is private to this implementation's
+         * recursion needs.
+         */
+        deleteEmptyDirs: function (startDir, startDirIsObject) {
+            var topDir = startDir,
+                dirFileArray, fileObj;
+
+            if (!startDirIsObject) {
+                topDir = xpfile(startDir);
+            }
+
+            if (topDir.exists()) {
+                dirFileArray = topDir.directoryEntries;
+                while (dirFileArray.hasMoreElements()) {
+                    fileObj = dirFileArray.getNext().QueryInterface(Ci.nsILocalFile);
+
+                    if (fileObj.isDirectory()) {
+                        file.deleteEmptyDirs(fileObj, true);
+                    }
+                }
+
+                //If the directory is empty now, delete it.
+                dirFileArray = topDir.directoryEntries;
+                if (!dirFileArray.hasMoreElements()) {
+                    file.deleteFile(topDir.path);
+                }
+            }
+        }
+    };
+
+    return file;
+});
+
+}
+
+if(env === 'browser') {
+/*global process */
+define('browser/quit', function () {
+    'use strict';
+    return function (code) {
+    };
+});
+}
+
+if(env === 'node') {
+/*global process */
+define('node/quit', function () {
+    'use strict';
+    return function (code) {
+        var draining = 0;
+        var exit = function () {
+            if (draining === 0) {
+                process.exit(code);
+            } else {
+                draining -= 1;
+            }
+        };
+        if (process.stdout.bufferSize) {
+            draining += 1;
+            process.stdout.once('drain', exit);
+        }
+        if (process.stderr.bufferSize) {
+            draining += 1;
+            process.stderr.once('drain', exit);
+        }
+        exit();
+    };
+});
+
+}
+
+if(env === 'rhino') {
+/*global quit */
+define('rhino/quit', function () {
+    'use strict';
+    return function (code) {
+        return quit(code);
+    };
+});
+
+}
+
+if(env === 'xpconnect') {
+/*global quit */
+define('xpconnect/quit', function () {
+    'use strict';
+    return function (code) {
+        return quit(code);
+    };
+});
+
+}
+
+if(env === 'browser') {
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, console: false */
+
+define('browser/print', function () {
+    function print(msg) {
+        console.log(msg);
+    }
+
+    return print;
+});
+
+}
+
+if(env === 'node') {
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, console: false */
+
+define('node/print', function () {
+    function print(msg) {
+        console.log(msg);
+    }
+
+    return print;
+});
+
+}
+
+if(env === 'rhino') {
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, print: false */
+
+define('rhino/print', function () {
+    return print;
+});
+
+}
+
+if(env === 'xpconnect') {
+/**
+ * @license RequireJS Copyright (c) 2013, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false, print: false */
+
+define('xpconnect/print', function () {
+    return print;
+});
+
+}
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint nomen: false, strict: false */
+/*global define: false */
+
+define('logger', ['env!env/print'], function (print) {
+    var logger = {
+        TRACE: 0,
+        INFO: 1,
+        WARN: 2,
+        ERROR: 3,
+        SILENT: 4,
+        level: 0,
+        logPrefix: "",
+
+        logLevel: function( level ) {
+            this.level = level;
+        },
+
+        trace: function (message) {
+            if (this.level <= this.TRACE) {
+                this._print(message);
+            }
+        },
+
+        info: function (message) {
+            if (this.level <= this.INFO) {
+                this._print(message);
+            }
+        },
+
+        warn: function (message) {
+            if (this.level <= this.WARN) {
+                this._print(message);
+            }
+        },
+
+        error: function (message) {
+            if (this.level <= this.ERROR) {
+                this._print(message);
+            }
+        },
+
+        _print: function (message) {
+            this._sysPrint((this.logPrefix ? (this.logPrefix + " ") : "") + message);
+        },
+
+        _sysPrint: function (message) {
+            print(message);
+        }
+    };
+
+    return logger;
+});
+//Just a blank file to use when building the optimizer with the optimizer,
+//so that the build does not attempt to inline some env modules,
+//like Node's fs and path.
+
+/*
+  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
+  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
+  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
+  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
+  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
+  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
+  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*jslint bitwise:true plusplus:true */
+/*global esprima:true, define:true, exports:true, window: true,
+throwError: true, createLiteral: true, generateStatement: true,
+parseAssignmentExpression: true, parseBlock: true, parseExpression: true,
+parseFunctionDeclaration: true, parseFunctionExpression: true,
+parseFunctionSourceElements: true, parseVariableIdentifier: true,
+parseLeftHandSideExpression: true,
+parseStatement: true, parseSourceElement: true */
+
+(function (root, factory) {
+    'use strict';
+
+    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
+    // Rhino, and plain browser loading.
+    if (typeof define === 'function' && define.amd) {
+        define('esprima', ['exports'], factory);
+    } else if (typeof exports !== 'undefined') {
+        factory(exports);
+    } else {
+        factory((root.esprima = {}));
+    }
+}(this, function (exports) {
+    'use strict';
+
+    var Token,
+        TokenName,
+        Syntax,
+        PropertyKind,
+        Messages,
+        Regex,
+        source,
+        strict,
+        index,
+        lineNumber,
+        lineStart,
+        length,
+        buffer,
+        state,
+        extra;
+
+    Token = {
+        BooleanLiteral: 1,
+        EOF: 2,
+        Identifier: 3,
+        Keyword: 4,
+        NullLiteral: 5,
+        NumericLiteral: 6,
+        Punctuator: 7,
+        StringLiteral: 8
+    };
+
+    TokenName = {};
+    TokenName[Token.BooleanLiteral] = 'Boolean';
+    TokenName[Token.EOF] = '<end>';
+    TokenName[Token.Identifier] = 'Identifier';
+    TokenName[Token.Keyword] = 'Keyword';
+    TokenName[Token.NullLiteral] = 'Null';
+    TokenName[Token.NumericLiteral] = 'Numeric';
+    TokenName[Token.Punctuator] = 'Punctuator';
+    TokenName[Token.StringLiteral] = 'String';
+
+    Syntax = {
+        AssignmentExpression: 'AssignmentExpression',
+        ArrayExpression: 'ArrayExpression',
+        BlockStatement: 'BlockStatement',
+        BinaryExpression: 'BinaryExpression',
+        BreakStatement: 'BreakStatement',
+        CallExpression: 'CallExpression',
+        CatchClause: 'CatchClause',
+        ConditionalExpression: 'ConditionalExpression',
+        ContinueStatement: 'ContinueStatement',
+        DoWhileStatement: 'DoWhileStatement',
+        DebuggerStatement: 'DebuggerStatement',
+        EmptyStatement: 'EmptyStatement',
+        ExpressionStatement: 'ExpressionStatement',
+        ForStatement: 'ForStatement',
+        ForInStatement: 'ForInStatement',
+        FunctionDeclaration: 'FunctionDeclaration',
+        FunctionExpression: 'FunctionExpression',
+        Identifier: 'Identifier',
+        IfStatement: 'IfStatement',
+        Literal: 'Literal',
+        LabeledStatement: 'LabeledStatement',
+        LogicalExpression: 'LogicalExpression',
+        MemberExpression: 'MemberExpression',
+        NewExpression: 'NewExpression',
+        ObjectExpression: 'ObjectExpression',
+        Program: 'Program',
+        Property: 'Property',
+        ReturnStatement: 'ReturnStatement',
+        SequenceExpression: 'SequenceExpression',
+        SwitchStatement: 'SwitchStatement',
+        SwitchCase: 'SwitchCase',
+        ThisExpression: 'ThisExpression',
+        ThrowStatement: 'ThrowStatement',
+        TryStatement: 'TryStatement',
+        UnaryExpression: 'UnaryExpression',
+        UpdateExpression: 'UpdateExpression',
+        VariableDeclaration: 'VariableDeclaration',
+        VariableDeclarator: 'VariableDeclarator',
+        WhileStatement: 'WhileStatement',
+        WithStatement: 'WithStatement'
+    };
+
+    PropertyKind = {
+        Data: 1,
+        Get: 2,
+        Set: 4
+    };
+
+    // Error messages should be identical to V8.
+    Messages = {
+        UnexpectedToken:  'Unexpected token %0',
+        UnexpectedNumber:  'Unexpected number',
+        UnexpectedString:  'Unexpected string',
+        UnexpectedIdentifier:  'Unexpected identifier',
+        UnexpectedReserved:  'Unexpected reserved word',
+        UnexpectedEOS:  'Unexpected end of input',
+        NewlineAfterThrow:  'Illegal newline after throw',
+        InvalidRegExp: 'Invalid regular expression',
+        UnterminatedRegExp:  'Invalid regular expression: missing /',
+        InvalidLHSInAssignment:  'Invalid left-hand side in assignment',
+        InvalidLHSInForIn:  'Invalid left-hand side in for-in',
+        MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
+        NoCatchOrFinally:  'Missing catch or finally after try',
+        UnknownLabel: 'Undefined label \'%0\'',
+        Redeclaration: '%0 \'%1\' has already been declared',
+        IllegalContinue: 'Illegal continue statement',
+        IllegalBreak: 'Illegal break statement',
+        IllegalReturn: 'Illegal return statement',
+        StrictModeWith:  'Strict mode code may not include a with statement',
+        StrictCatchVariable:  'Catch variable may not be eval or arguments in strict mode',
+        StrictVarName:  'Variable name may not be eval or arguments in strict mode',
+        StrictParamName:  'Parameter name eval or arguments is not allowed in strict mode',
+        StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
+        StrictFunctionName:  'Function name may not be eval or arguments in strict mode',
+        StrictOctalLiteral:  'Octal literals are not allowed in strict mode.',
+        StrictDelete:  'Delete of an unqualified identifier in strict mode.',
+        StrictDuplicateProperty:  'Duplicate data property in object literal not allowed in strict mode',
+        AccessorDataProperty:  'Object literal may not have data and accessor property with the same name',
+        AccessorGetSet:  'Object literal may not have multiple get/set accessors with the same name',
+        StrictLHSAssignment:  'Assignment to eval or arguments is not allowed in strict mode',
+        StrictLHSPostfix:  'Postfix increment/decrement may not have eval or arguments operand in strict mode',
+        StrictLHSPrefix:  'Prefix increment/decrement may not have eval or arguments operand in strict mode',
+        StrictReservedWord:  'Use of future reserved word in strict mode'
+    };
+
+    // See also tools/generate-unicode-regex.py.
+    Regex = {
+        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
+        NonAsciiIdentifierPart: new 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\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]')
+    };
+
+    // Ensure the condition is true, otherwise throw an error.
+    // This is only to have a better contract semantic, i.e. another safety net
+    // to catch a logic error. The condition shall be fulfilled in normal case.
+    // Do NOT use this to enforce a certain condition on any user input.
+
+    function assert(condition, message) {
+        if (!condition) {
+            throw new Error('ASSERT: ' + message);
+        }
+    }
+
+    function sliceSource(from, to) {
+        return source.slice(from, to);
+    }
+
+    if (typeof 'esprima'[0] === 'undefined') {
+        sliceSource = function sliceArraySource(from, to) {
+            return source.slice(from, to).join('');
+        };
+    }
+
+    function isDecimalDigit(ch) {
+        return '0123456789'.indexOf(ch) >= 0;
+    }
+
+    function isHexDigit(ch) {
+        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
+    }
+
+    function isOctalDigit(ch) {
+        return '01234567'.indexOf(ch) >= 0;
+    }
+
+
+    // 7.2 White Space
+
+    function isWhiteSpace(ch) {
+        return (ch === ' ') || (ch === '\u0009') || (ch === '\u000B') ||
+            (ch === '\u000C') || (ch === '\u00A0') ||
+            (ch.charCodeAt(0) >= 0x1680 &&
+             '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(ch) >= 0);
+    }
+
+    // 7.3 Line Terminators
+
+    function isLineTerminator(ch) {
+        return (ch === '\n' || ch === '\r' || ch === '\u2028' || ch === '\u2029');
+    }
+
+    // 7.6 Identifier Names and Identifiers
+
+    function isIdentifierStart(ch) {
+        return (ch === '$') || (ch === '_') || (ch === '\\') ||
+            (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
+            ((ch.charCodeAt(0) >= 0x80) && Regex.NonAsciiIdentifierStart.test(ch));
+    }
+
+    function isIdentifierPart(ch) {
+        return (ch === '$') || (ch === '_') || (ch === '\\') ||
+            (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
+            ((ch >= '0') && (ch <= '9')) ||
+            ((ch.charCodeAt(0) >= 0x80) && Regex.NonAsciiIdentifierPart.test(ch));
+    }
+
+    // 7.6.1.2 Future Reserved Words
+
+    function isFutureReservedWord(id) {
+        switch (id) {
+
+        // Future reserved words.
+        case 'class':
+        case 'enum':
+        case 'export':
+        case 'extends':
+        case 'import':
+        case 'super':
+            return true;
+        }
+
+        return false;
+    }
+
+    function isStrictModeReservedWord(id) {
+        switch (id) {
+
+        // Strict Mode reserved words.
+        case 'implements':
+        case 'interface':
+        case 'package':
+        case 'private':
+        case 'protected':
+        case 'public':
+        case 'static':
+        case 'yield':
+        case 'let':
+            return true;
+        }
+
+        return false;
+    }
+
+    function isRestrictedWord(id) {
+        return id === 'eval' || id === 'arguments';
+    }
+
+    // 7.6.1.1 Keywords
+
+    function isKeyword(id) {
+        var keyword = false;
+        switch (id.length) {
+        case 2:
+            keyword = (id === 'if') || (id === 'in') || (id === 'do');
+            break;
+        case 3:
+            keyword = (id === 'var') || (id === 'for') || (id === 'new') || (id === 'try');
+            break;
+        case 4:
+            keyword = (id === 'this') || (id === 'else') || (id === 'case') || (id === 'void') || (id === 'with');
+            break;
+        case 5:
+            keyword = (id === 'while') || (id === 'break') || (id === 'catch') || (id === 'throw');
+            break;
+        case 6:
+            keyword = (id === 'return') || (id === 'typeof') || (id === 'delete') || (id === 'switch');
+            break;
+        case 7:
+            keyword = (id === 'default') || (id === 'finally');
+            break;
+        case 8:
+            keyword = (id === 'function') || (id === 'continue') || (id === 'debugger');
+            break;
+        case 10:
+            keyword = (id === 'instanceof');
+            break;
+        }
+
+        if (keyword) {
+            return true;
+        }
+
+        switch (id) {
+        // Future reserved words.
+        // 'const' is specialized as Keyword in V8.
+        case 'const':
+            return true;
+
+        // For compatiblity to SpiderMonkey and ES.next
+        case 'yield':
+        case 'let':
+            return true;
+        }
+
+        if (strict && isStrictModeReservedWord(id)) {
+            return true;
+        }
+
+        return isFutureReservedWord(id);
+    }
+
+    // 7.4 Comments
+
+    function skipComment() {
+        var ch, blockComment, lineComment;
+
+        blockComment = false;
+        lineComment = false;
+
+        while (index < length) {
+            ch = source[index];
+
+            if (lineComment) {
+                ch = source[index++];
+                if (isLineTerminator(ch)) {
+                    lineComment = false;
+                    if (ch === '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                    ++lineNumber;
+                    lineStart = index;
+                }
+            } else if (blockComment) {
+                if (isLineTerminator(ch)) {
+                    if (ch === '\r' && source[index + 1] === '\n') {
+                        ++index;
+                    }
+                    ++lineNumber;
+                    ++index;
+                    lineStart = index;
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                } else {
+                    ch = source[index++];
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                    if (ch === '*') {
+                        ch = source[index];
+                        if (ch === '/') {
+                            ++index;
+                            blockComment = false;
+                        }
+                    }
+                }
+            } else if (ch === '/') {
+                ch = source[index + 1];
+                if (ch === '/') {
+                    index += 2;
+                    lineComment = true;
+                } else if (ch === '*') {
+                    index += 2;
+                    blockComment = true;
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                } else {
+                    break;
+                }
+            } else if (isWhiteSpace(ch)) {
+                ++index;
+            } else if (isLineTerminator(ch)) {
+                ++index;
+                if (ch ===  '\r' && source[index] === '\n') {
+                    ++index;
+                }
+                ++lineNumber;
+                lineStart = index;
+            } else {
+                break;
+            }
+        }
+    }
+
+    function scanHexEscape(prefix) {
+        var i, len, ch, code = 0;
+
+        len = (prefix === 'u') ? 4 : 2;
+        for (i = 0; i < len; ++i) {
+            if (index < length && isHexDigit(source[index])) {
+                ch = source[index++];
+                code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
+            } else {
+                return '';
+            }
+        }
+        return String.fromCharCode(code);
+    }
+
+    function scanIdentifier() {
+        var ch, start, id, restore;
+
+        ch = source[index];
+        if (!isIdentifierStart(ch)) {
+            return;
+        }
+
+        start = index;
+        if (ch === '\\') {
+            ++index;
+            if (source[index] !== 'u') {
+                return;
+            }
+            ++index;
+            restore = index;
+            ch = scanHexEscape('u');
+            if (ch) {
+                if (ch === '\\' || !isIdentifierStart(ch)) {
+                    return;
+                }
+                id = ch;
+            } else {
+                index = restore;
+                id = 'u';
+            }
+        } else {
+            id = source[index++];
+        }
+
+        while (index < length) {
+            ch = source[index];
+            if (!isIdentifierPart(ch)) {
+                break;
+            }
+            if (ch === '\\') {
+                ++index;
+                if (source[index] !== 'u') {
+                    return;
+                }
+                ++index;
+                restore = index;
+                ch = scanHexEscape('u');
+                if (ch) {
+                    if (ch === '\\' || !isIdentifierPart(ch)) {
+                        return;
+                    }
+                    id += ch;
+                } else {
+                    index = restore;
+                    id += 'u';
+                }
+            } else {
+                id += source[index++];
+            }
+        }
+
+        // There is no keyword or literal with only one character.
+        // Thus, it must be an identifier.
+        if (id.length === 1) {
+            return {
+                type: Token.Identifier,
+                value: id,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (isKeyword(id)) {
+            return {
+                type: Token.Keyword,
+                value: id,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // 7.8.1 Null Literals
+
+        if (id === 'null') {
+            return {
+                type: Token.NullLiteral,
+                value: id,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // 7.8.2 Boolean Literals
+
+        if (id === 'true' || id === 'false') {
+            return {
+                type: Token.BooleanLiteral,
+                value: id,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        return {
+            type: Token.Identifier,
+            value: id,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    // 7.7 Punctuators
+
+    function scanPunctuator() {
+        var start = index,
+            ch1 = source[index],
+            ch2,
+            ch3,
+            ch4;
+
+        // Check for most common single-character punctuators.
+
+        if (ch1 === ';' || ch1 === '{' || ch1 === '}') {
+            ++index;
+            return {
+                type: Token.Punctuator,
+                value: ch1,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === ',' || ch1 === '(' || ch1 === ')') {
+            ++index;
+            return {
+                type: Token.Punctuator,
+                value: ch1,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // Dot (.) can also start a floating-point number, hence the need
+        // to check the next character.
+
+        ch2 = source[index + 1];
+        if (ch1 === '.' && !isDecimalDigit(ch2)) {
+            return {
+                type: Token.Punctuator,
+                value: source[index++],
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // Peek more characters.
+
+        ch3 = source[index + 2];
+        ch4 = source[index + 3];
+
+        // 4-character punctuator: >>>=
+
+        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
+            if (ch4 === '=') {
+                index += 4;
+                return {
+                    type: Token.Punctuator,
+                    value: '>>>=',
+                    lineNumber: lineNumber,
+                    lineStart: lineStart,
+                    range: [start, index]
+                };
+            }
+        }
+
+        // 3-character punctuators: === !== >>> <<= >>=
+
+        if (ch1 === '=' && ch2 === '=' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '===',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '!' && ch2 === '=' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '!==',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '>>>',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '<<=',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '>>=',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // 2-character punctuators: <= >= == != ++ -- << >> && ||
+        // += -= *= %= &= |= ^= /=
+
+        if (ch2 === '=') {
+            if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
+                index += 2;
+                return {
+                    type: Token.Punctuator,
+                    value: ch1 + ch2,
+                    lineNumber: lineNumber,
+                    lineStart: lineStart,
+                    range: [start, index]
+                };
+            }
+        }
+
+        if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0)) {
+            if ('+-<>&|'.indexOf(ch2) >= 0) {
+                index += 2;
+                return {
+                    type: Token.Punctuator,
+                    value: ch1 + ch2,
+                    lineNumber: lineNumber,
+                    lineStart: lineStart,
+                    range: [start, index]
+                };
+            }
+        }
+
+        // The remaining 1-character punctuators.
+
+        if ('[]<>+-*%&|^!~?:=/'.indexOf(ch1) >= 0) {
+            return {
+                type: Token.Punctuator,
+                value: source[index++],
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+    }
+
+    // 7.8.3 Numeric Literals
+
+    function scanNumericLiteral() {
+        var number, start, ch;
+
+        ch = source[index];
+        assert(isDecimalDigit(ch) || (ch === '.'),
+            'Numeric literal must start with a decimal digit or a decimal point');
+
+        start = index;
+        number = '';
+        if (ch !== '.') {
+            number = source[index++];
+            ch = source[index];
+
+            // Hex number starts with '0x'.
+            // Octal number starts with '0'.
+            if (number === '0') {
+                if (ch === 'x' || ch === 'X') {
+                    number += source[index++];
+                    while (index < length) {
+                        ch = source[index];
+                        if (!isHexDigit(ch)) {
+                            break;
+                        }
+                        number += source[index++];
+                    }
+
+                    if (number.length <= 2) {
+                        // only 0x
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+
+                    if (index < length) {
+                        ch = source[index];
+                        if (isIdentifierStart(ch)) {
+                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                        }
+                    }
+                    return {
+                        type: Token.NumericLiteral,
+                        value: parseInt(number, 16),
+                        lineNumber: lineNumber,
+                        lineStart: lineStart,
+                        range: [start, index]
+                    };
+                } else if (isOctalDigit(ch)) {
+                    number += source[index++];
+                    while (index < length) {
+                        ch = source[index];
+                        if (!isOctalDigit(ch)) {
+                            break;
+                        }
+                        number += source[index++];
+                    }
+
+                    if (index < length) {
+                        ch = source[index];
+                        if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
+                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                        }
+                    }
+                    return {
+                        type: Token.NumericLiteral,
+                        value: parseInt(number, 8),
+                        octal: true,
+                        lineNumber: lineNumber,
+                        lineStart: lineStart,
+                        range: [start, index]
+                    };
+                }
+
+                // decimal number starts with '0' such as '09' is illegal.
+                if (isDecimalDigit(ch)) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+            }
+
+            while (index < length) {
+                ch = source[index];
+                if (!isDecimalDigit(ch)) {
+                    break;
+                }
+                number += source[index++];
+            }
+        }
+
+        if (ch === '.') {
+            number += source[index++];
+            while (index < length) {
+                ch = source[index];
+                if (!isDecimalDigit(ch)) {
+                    break;
+                }
+                number += source[index++];
+            }
+        }
+
+        if (ch === 'e' || ch === 'E') {
+            number += source[index++];
+
+            ch = source[index];
+            if (ch === '+' || ch === '-') {
+                number += source[index++];
+            }
+
+            ch = source[index];
+            if (isDecimalDigit(ch)) {
+                number += source[index++];
+                while (index < length) {
+                    ch = source[index];
+                    if (!isDecimalDigit(ch)) {
+                        break;
+                    }
+                    number += source[index++];
+                }
+            } else {
+                ch = 'character ' + ch;
+                if (index >= length) {
+                    ch = '<end>';
+                }
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+        }
+
+        if (index < length) {
+            ch = source[index];
+            if (isIdentifierStart(ch)) {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseFloat(number),
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    // 7.8.4 String Literals
+
+    function scanStringLiteral() {
+        var str = '', quote, start, ch, code, unescaped, restore, octal = false;
+
+        quote = source[index];
+        assert((quote === '\'' || quote === '"'),
+            'String literal must starts with a quote');
+
+        start = index;
+        ++index;
+
+        while (index < length) {
+            ch = source[index++];
+
+            if (ch === quote) {
+                quote = '';
+                break;
+            } else if (ch === '\\') {
+                ch = source[index++];
+                if (!isLineTerminator(ch)) {
+                    switch (ch) {
+                    case 'n':
+                        str += '\n';
+                        break;
+                    case 'r':
+                        str += '\r';
+                        break;
+                    case 't':
+                        str += '\t';
+                        break;
+                    case 'u':
+                    case 'x':
+                        restore = index;
+                        unescaped = scanHexEscape(ch);
+                        if (unescaped) {
+                            str += unescaped;
+                        } else {
+                            index = restore;
+                            str += ch;
+                        }
+                        break;
+                    case 'b':
+                        str += '\b';
+                        break;
+                    case 'f':
+                        str += '\f';
+                        break;
+                    case 'v':
+                        str += '\x0B';
+                        break;
+
+                    default:
+                        if (isOctalDigit(ch)) {
+                            code = '01234567'.indexOf(ch);
+
+                            // \0 is not octal escape sequence
+                            if (code !== 0) {
+                                octal = true;
+                            }
+
+                            if (index < length && isOctalDigit(source[index])) {
+                                octal = true;
+                                code = code * 8 + '01234567'.indexOf(source[index++]);
+
+                                // 3 digits are only allowed when string starts
+                                // with 0, 1, 2, 3
+                                if ('0123'.indexOf(ch) >= 0 &&
+                                        index < length &&
+                                        isOctalDigit(source[index])) {
+                                    code = code * 8 + '01234567'.indexOf(source[index++]);
+                                }
+                            }
+                            str += String.fromCharCode(code);
+                        } else {
+                            str += ch;
+                        }
+                        break;
+                    }
+                } else {
+                    ++lineNumber;
+                    if (ch ===  '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                }
+            } else if (isLineTerminator(ch)) {
+                break;
+            } else {
+                str += ch;
+            }
+        }
+
+        if (quote !== '') {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.StringLiteral,
+            value: str,
+            octal: octal,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    function scanRegExp() {
+        var str, ch, start, pattern, flags, value, classMarker = false, restore, terminated = false;
+
+        buffer = null;
+        skipComment();
+
+        start = index;
+        ch = source[index];
+        assert(ch === '/', 'Regular expression literal must start with a slash');
+        str = source[index++];
+
+        while (index < length) {
+            ch = source[index++];
+            str += ch;
+            if (ch === '\\') {
+                ch = source[index++];
+                // ECMA-262 7.8.5
+                if (isLineTerminator(ch)) {
+                    throwError({}, Messages.UnterminatedRegExp);
+                }
+                str += ch;
+            } else if (classMarker) {
+                if (ch === ']') {
+                    classMarker = false;
+                }
+            } else {
+                if (ch === '/') {
+                    terminated = true;
+                    break;
+                } else if (ch === '[') {
+                    classMarker = true;
+                } else if (isLineTerminator(ch)) {
+                    throwError({}, Messages.UnterminatedRegExp);
+                }
+            }
+        }
+
+        if (!terminated) {
+            throwError({}, Messages.UnterminatedRegExp);
+        }
+
+        // Exclude leading and trailing slash.
+        pattern = str.substr(1, str.length - 2);
+
+        flags = '';
+        while (index < length) {
+            ch = source[index];
+            if (!isIdentifierPart(ch)) {
+                break;
+            }
+
+            ++index;
+            if (ch === '\\' && index < length) {
+                ch = source[index];
+                if (ch === 'u') {
+                    ++index;
+                    restore = index;
+                    ch = scanHexEscape('u');
+                    if (ch) {
+                        flags += ch;
+                        str += '\\u';
+                        for (; restore < index; ++restore) {
+                            str += source[restore];
+                        }
+                    } else {
+                        index = restore;
+                        flags += 'u';
+                        str += '\\u';
+                    }
+                } else {
+                    str += '\\';
+                }
+            } else {
+                flags += ch;
+                str += ch;
+            }
+        }
+
+        try {
+            value = new RegExp(pattern, flags);
+        } catch (e) {
+            throwError({}, Messages.InvalidRegExp);
+        }
+
+        return {
+            literal: str,
+            value: value,
+            range: [start, index]
+        };
+    }
+
+    function isIdentifierName(token) {
+        return token.type === Token.Identifier ||
+            token.type === Token.Keyword ||
+            token.type === Token.BooleanLiteral ||
+            token.type === Token.NullLiteral;
+    }
+
+    function advance() {
+        var ch, token;
+
+        skipComment();
+
+        if (index >= length) {
+            return {
+                type: Token.EOF,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [index, index]
+            };
+        }
+
+        token = scanPunctuator();
+        if (typeof token !== 'undefined') {
+            return token;
+        }
+
+        ch = source[index];
+
+        if (ch === '\'' || ch === '"') {
+            return scanStringLiteral();
+        }
+
+        if (ch === '.' || isDecimalDigit(ch)) {
+            return scanNumericLiteral();
+        }
+
+        token = scanIdentifier();
+        if (typeof token !== 'undefined') {
+            return token;
+        }
+
+        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+    }
+
+    function lex() {
+        var token;
+
+        if (buffer) {
+            index = buffer.range[1];
+            lineNumber = buffer.lineNumber;
+            lineStart = buffer.lineStart;
+            token = buffer;
+            buffer = null;
+            return token;
+        }
+
+        buffer = null;
+        return advance();
+    }
+
+    function lookahead() {
+        var pos, line, start;
+
+        if (buffer !== null) {
+            return buffer;
+        }
+
+        pos = index;
+        line = lineNumber;
+        start = lineStart;
+        buffer = advance();
+        index = pos;
+        lineNumber = line;
+        lineStart = start;
+
+        return buffer;
+    }
+
+    // Return true if there is a line terminator before the next token.
+
+    function peekLineTerminator() {
+        var pos, line, start, found;
+
+        pos = index;
+        line = lineNumber;
+        start = lineStart;
+        skipComment();
+        found = lineNumber !== line;
+        index = pos;
+        lineNumber = line;
+        lineStart = start;
+
+        return found;
+    }
+
+    // Throw an exception
+
+    function throwError(token, messageFormat) {
+        var error,
+            args = Array.prototype.slice.call(arguments, 2),
+            msg = messageFormat.replace(
+                /%(\d)/g,
+                function (whole, index) {
+                    return args[index] || '';
+                }
+            );
+
+        if (typeof token.lineNumber === 'number') {
+            error = new Error('Line ' + token.lineNumber + ': ' + msg);
+            error.index = token.range[0];
+            error.lineNumber = token.lineNumber;
+            error.column = token.range[0] - lineStart + 1;
+        } else {
+            error = new Error('Line ' + lineNumber + ': ' + msg);
+            error.index = index;
+            error.lineNumber = lineNumber;
+            error.column = index - lineStart + 1;
+        }
+
+        throw error;
+    }
+
+    function throwErrorTolerant() {
+        try {
+            throwError.apply(null, arguments);
+        } catch (e) {
+            if (extra.errors) {
+                extra.errors.push(e);
+            } else {
+                throw e;
+            }
+        }
+    }
+
+
+    // Throw an exception because of the token.
+
+    function throwUnexpected(token) {
+        if (token.type === Token.EOF) {
+            throwError(token, Messages.UnexpectedEOS);
+        }
+
+        if (token.type === Token.NumericLiteral) {
+            throwError(token, Messages.UnexpectedNumber);
+        }
+
+        if (token.type === Token.StringLiteral) {
+            throwError(token, Messages.UnexpectedString);
+        }
+
+        if (token.type === Token.Identifier) {
+            throwError(token, Messages.UnexpectedIdentifier);
+        }
+
+        if (token.type === Token.Keyword) {
+            if (isFutureReservedWord(token.value)) {
+                throwError(token, Messages.UnexpectedReserved);
+            } else if (strict && isStrictModeReservedWord(token.value)) {
+                throwErrorTolerant(token, Messages.StrictReservedWord);
+                return;
+            }
+            throwError(token, Messages.UnexpectedToken, token.value);
+        }
+
+        // BooleanLiteral, NullLiteral, or Punctuator.
+        throwError(token, Messages.UnexpectedToken, token.value);
+    }
+
+    // Expect the next token to match the specified punctuator.
+    // If not, an exception will be thrown.
+
+    function expect(value) {
+        var token = lex();
+        if (token.type !== Token.Punctuator || token.value !== value) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Expect the next token to match the specified keyword.
+    // If not, an exception will be thrown.
+
+    function expectKeyword(keyword) {
+        var token = lex();
+        if (token.type !== Token.Keyword || token.value !== keyword) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Return true if the next token matches the specified punctuator.
+
+    function match(value) {
+        var token = lookahead();
+        return token.type === Token.Punctuator && token.value === value;
+    }
+
+    // Return true if the next token matches the specified keyword
+
+    function matchKeyword(keyword) {
+        var token = lookahead();
+        return token.type === Token.Keyword && token.value === keyword;
+    }
+
+    // Return true if the next token is an assignment operator
+
+    function matchAssign() {
+        var token = lookahead(),
+            op = token.value;
+
+        if (token.type !== Token.Punctuator) {
+            return false;
+        }
+        return op === '=' ||
+            op === '*=' ||
+            op === '/=' ||
+            op === '%=' ||
+            op === '+=' ||
+            op === '-=' ||
+            op === '<<=' ||
+            op === '>>=' ||
+            op === '>>>=' ||
+            op === '&=' ||
+            op === '^=' ||
+            op === '|=';
+    }
+
+    function consumeSemicolon() {
+        var token, line;
+
+        // Catch the very common case first.
+        if (source[index] === ';') {
+            lex();
+            return;
+        }
+
+        line = lineNumber;
+        skipComment();
+        if (lineNumber !== line) {
+            return;
+        }
+
+        if (match(';')) {
+            lex();
+            return;
+        }
+
+        token = lookahead();
+        if (token.type !== Token.EOF && !match('}')) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Return true if provided expression is LeftHandSideExpression
+
+    function isLeftHandSide(expr) {
+        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
+    }
+
+    // 11.1.4 Array Initialiser
+
+    function parseArrayInitialiser() {
+        var elements = [];
+
+        expect('[');
+
+        while (!match(']')) {
+            if (match(',')) {
+                lex();
+                elements.push(null);
+            } else {
+                elements.push(parseAssignmentExpression());
+
+                if (!match(']')) {
+                    expect(',');
+                }
+            }
+        }
+
+        expect(']');
+
+        return {
+            type: Syntax.ArrayExpression,
+            elements: elements
+        };
+    }
+
+    // 11.1.5 Object Initialiser
+
+    function parsePropertyFunction(param, first) {
+        var previousStrict, body;
+
+        previousStrict = strict;
+        body = parseFunctionSourceElements();
+        if (first && strict && isRestrictedWord(param[0].name)) {
+            throwErrorTolerant(first, Messages.StrictParamName);
+        }
+        strict = previousStrict;
+
+        return {
+            type: Syntax.FunctionExpression,
+            id: null,
+            params: param,
+            defaults: [],
+            body: body,
+            rest: null,
+            generator: false,
+            expression: false
+        };
+    }
+
+    function parseObjectPropertyKey() {
+        var token = lex();
+
+        // Note: This function is called only from parseObjectProperty(), where
+        // EOF and Punctuator tokens are already filtered out.
+
+        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
+            if (strict && token.octal) {
+                throwErrorTolerant(token, Messages.StrictOctalLiteral);
+            }
+            return createLiteral(token);
+        }
+
+        return {
+            type: Syntax.Identifier,
+            name: token.value
+        };
+    }
+
+    function parseObjectProperty() {
+        var token, key, id, param;
+
+        token = lookahead();
+
+        if (token.type === Token.Identifier) {
+
+            id = parseObjectPropertyKey();
+
+            // Property Assignment: Getter and Setter.
+
+            if (token.value === 'get' && !match(':')) {
+                key = parseObjectPropertyKey();
+                expect('(');
+                expect(')');
+                return {
+                    type: Syntax.Property,
+                    key: key,
+                    value: parsePropertyFunction([]),
+                    kind: 'get'
+                };
+            } else if (token.value === 'set' && !match(':')) {
+                key = parseObjectPropertyKey();
+                expect('(');
+                token = lookahead();
+                if (token.type !== Token.Identifier) {
+                    expect(')');
+                    throwErrorTolerant(token, Messages.UnexpectedToken, token.value);
+                    return {
+                        type: Syntax.Property,
+                        key: key,
+                        value: parsePropertyFunction([]),
+                        kind: 'set'
+                    };
+                } else {
+                    param = [ parseVariableIdentifier() ];
+                    expect(')');
+                    return {
+                        type: Syntax.Property,
+                        key: key,
+                        value: parsePropertyFunction(param, token),
+                        kind: 'set'
+                    };
+                }
+            } else {
+                expect(':');
+                return {
+                    type: Syntax.Property,
+                    key: id,
+                    value: parseAssignmentExpression(),
+                    kind: 'init'
+                };
+            }
+        } else if (token.type === Token.EOF || token.type === Token.Punctuator) {
+            throwUnexpected(token);
+        } else {
+            key = parseObjectPropertyKey();
+            expect(':');
+            return {
+                type: Syntax.Property,
+                key: key,
+                value: parseAssignmentExpression(),
+                kind: 'init'
+            };
+        }
+    }
+
+    function parseObjectInitialiser() {
+        var properties = [], property, name, kind, map = {}, toString = String;
+
+        expect('{');
+
+        while (!match('}')) {
+            property = parseObjectProperty();
+
+            if (property.key.type === Syntax.Identifier) {
+                name = property.key.name;
+            } else {
+                name = toString(property.key.value);
+            }
+            kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;
+            if (Object.prototype.hasOwnProperty.call(map, name)) {
+                if (map[name] === PropertyKind.Data) {
+                    if (strict && kind === PropertyKind.Data) {
+                        throwErrorTolerant({}, Messages.StrictDuplicateProperty);
+                    } else if (kind !== PropertyKind.Data) {
+                        throwErrorTolerant({}, Messages.AccessorDataProperty);
+                    }
+                } else {
+                    if (kind === PropertyKind.Data) {
+                        throwErrorTolerant({}, Messages.AccessorDataProperty);
+                    } else if (map[name] & kind) {
+                        throwErrorTolerant({}, Messages.AccessorGetSet);
+                    }
+                }
+                map[name] |= kind;
+            } else {
+                map[name] = kind;
+            }
+
+            properties.push(property);
+
+            if (!match('}')) {
+                expect(',');
+            }
+        }
+
+        expect('}');
+
+        return {
+            type: Syntax.ObjectExpression,
+            properties: properties
+        };
+    }
+
+    // 11.1.6 The Grouping Operator
+
+    function parseGroupExpression() {
+        var expr;
+
+        expect('(');
+
+        expr = parseExpression();
+
+        expect(')');
+
+        return expr;
+    }
+
+
+    // 11.1 Primary Expressions
+
+    function parsePrimaryExpression() {
+        var token = lookahead(),
+            type = token.type;
+
+        if (type === Token.Identifier) {
+            return {
+                type: Syntax.Identifier,
+                name: lex().value
+            };
+        }
+
+        if (type === Token.StringLiteral || type === Token.NumericLiteral) {
+            if (strict && token.octal) {
+                throwErrorTolerant(token, Messages.StrictOctalLiteral);
+            }
+            return createLiteral(lex());
+        }
+
+        if (type === Token.Keyword) {
+            if (matchKeyword('this')) {
+                lex();
+                return {
+                    type: Syntax.ThisExpression
+                };
+            }
+
+            if (matchKeyword('function')) {
+                return parseFunctionExpression();
+            }
+        }
+
+        if (type === Token.BooleanLiteral) {
+            lex();
+            token.value = (token.value === 'true');
+            return createLiteral(token);
+        }
+
+        if (type === Token.NullLiteral) {
+            lex();
+            token.value = null;
+            return createLiteral(token);
+        }
+
+        if (match('[')) {
+            return parseArrayInitialiser();
+        }
+
+        if (match('{')) {
+            return parseObjectInitialiser();
+        }
+
+        if (match('(')) {
+            return parseGroupExpression();
+        }
+
+        if (match('/') || match('/=')) {
+            return createLiteral(scanRegExp());
+        }
+
+        return throwUnexpected(lex());
+    }
+
+    // 11.2 Left-Hand-Side Expressions
+
+    function parseArguments() {
+        var args = [];
+
+        expect('(');
+
+        if (!match(')')) {
+            while (index < length) {
+                args.push(parseAssignmentExpression());
+                if (match(')')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        return args;
+    }
+
+    function parseNonComputedProperty() {
+        var token = lex();
+
+        if (!isIdentifierName(token)) {
+            throwUnexpected(token);
+        }
+
+        return {
+            type: Syntax.Identifier,
+            name: token.value
+        };
+    }
+
+    function parseNonComputedMember() {
+        expect('.');
+
+        return parseNonComputedProperty();
+    }
+
+    function parseComputedMember() {
+        var expr;
+
+        expect('[');
+
+        expr = parseExpression();
+
+        expect(']');
+
+        return expr;
+    }
+
+    function parseNewExpression() {
+        var expr;
+
+        expectKeyword('new');
+
+        expr = {
+            type: Syntax.NewExpression,
+            callee: parseLeftHandSideExpression(),
+            'arguments': []
+        };
+
+        if (match('(')) {
+            expr['arguments'] = parseArguments();
+        }
+
+        return expr;
+    }
+
+    function parseLeftHandSideExpressionAllowCall() {
+        var expr;
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[') || match('(')) {
+            if (match('(')) {
+                expr = {
+                    type: Syntax.CallExpression,
+                    callee: expr,
+                    'arguments': parseArguments()
+                };
+            } else if (match('[')) {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: true,
+                    object: expr,
+                    property: parseComputedMember()
+                };
+            } else {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: false,
+                    object: expr,
+                    property: parseNonComputedMember()
+                };
+            }
+        }
+
+        return expr;
+    }
+
+
+    function parseLeftHandSideExpression() {
+        var expr;
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[')) {
+            if (match('[')) {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: true,
+                    object: expr,
+                    property: parseComputedMember()
+                };
+            } else {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: false,
+                    object: expr,
+                    property: parseNonComputedMember()
+                };
+            }
+        }
+
+        return expr;
+    }
+
+    // 11.3 Postfix Expressions
+
+    function parsePostfixExpression() {
+        var expr = parseLeftHandSideExpressionAllowCall(), token;
+
+        token = lookahead();
+        if (token.type !== Token.Punctuator) {
+            return expr;
+        }
+
+        if ((match('++') || match('--')) && !peekLineTerminator()) {
+            // 11.3.1, 11.3.2
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant({}, Messages.StrictLHSPostfix);
+            }
+            if (!isLeftHandSide(expr)) {
+                throwErrorTolerant({}, Messages.InvalidLHSInAssignment);
+            }
+
+            expr = {
+                type: Syntax.UpdateExpression,
+                operator: lex().value,
+                argument: expr,
+                prefix: false
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.4 Unary Operators
+
+    function parseUnaryExpression() {
+        var token, expr;
+
+        token = lookahead();
+        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
+            return parsePostfixExpression();
+        }
+
+        if (match('++') || match('--')) {
+            token = lex();
+            expr = parseUnaryExpression();
+            // 11.4.4, 11.4.5
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant({}, Messages.StrictLHSPrefix);
+            }
+
+            if (!isLeftHandSide(expr)) {
+                throwErrorTolerant({}, Messages.InvalidLHSInAssignment);
+            }
+
+            expr = {
+                type: Syntax.UpdateExpression,
+                operator: token.value,
+                argument: expr,
+                prefix: true
+            };
+            return expr;
+        }
+
+        if (match('+') || match('-') || match('~') || match('!')) {
+            expr = {
+                type: Syntax.UnaryExpression,
+                operator: lex().value,
+                argument: parseUnaryExpression(),
+                prefix: true
+            };
+            return expr;
+        }
+
+        if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
+            expr = {
+                type: Syntax.UnaryExpression,
+                operator: lex().value,
+                argument: parseUnaryExpression(),
+                prefix: true
+            };
+            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
+                throwErrorTolerant({}, Messages.StrictDelete);
+            }
+            return expr;
+        }
+
+        return parsePostfixExpression();
+    }
+
+    // 11.5 Multiplicative Operators
+
+    function parseMultiplicativeExpression() {
+        var expr = parseUnaryExpression();
+
+        while (match('*') || match('/') || match('%')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseUnaryExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.6 Additive Operators
+
+    function parseAdditiveExpression() {
+        var expr = parseMultiplicativeExpression();
+
+        while (match('+') || match('-')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseMultiplicativeExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.7 Bitwise Shift Operators
+
+    function parseShiftExpression() {
+        var expr = parseAdditiveExpression();
+
+        while (match('<<') || match('>>') || match('>>>')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseAdditiveExpression()
+            };
+        }
+
+        return expr;
+    }
+    // 11.8 Relational Operators
+
+    function parseRelationalExpression() {
+        var expr, previousAllowIn;
+
+        previousAllowIn = state.allowIn;
+        state.allowIn = true;
+
+        expr = parseShiftExpression();
+
+        while (match('<') || match('>') || match('<=') || match('>=') || (previousAllowIn && matchKeyword('in')) || matchKeyword('instanceof')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseShiftExpression()
+            };
+        }
+
+        state.allowIn = previousAllowIn;
+        return expr;
+    }
+
+    // 11.9 Equality Operators
+
+    function parseEqualityExpression() {
+        var expr = parseRelationalExpression();
+
+        while (match('==') || match('!=') || match('===') || match('!==')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseRelationalExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.10 Binary Bitwise Operators
+
+    function parseBitwiseANDExpression() {
+        var expr = parseEqualityExpression();
+
+        while (match('&')) {
+            lex();
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: '&',
+                left: expr,
+                right: parseEqualityExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    function parseBitwiseXORExpression() {
+        var expr = parseBitwiseANDExpression();
+
+        while (match('^')) {
+            lex();
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: '^',
+                left: expr,
+                right: parseBitwiseANDExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    function parseBitwiseORExpression() {
+        var expr = parseBitwiseXORExpression();
+
+        while (match('|')) {
+            lex();
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: '|',
+                left: expr,
+                right: parseBitwiseXORExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.11 Binary Logical Operators
+
+    function parseLogicalANDExpression() {
+        var expr = parseBitwiseORExpression();
+
+        while (match('&&')) {
+            lex();
+            expr = {
+                type: Syntax.LogicalExpression,
+                operator: '&&',
+                left: expr,
+                right: parseBitwiseORExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    function parseLogicalORExpression() {
+        var expr = parseLogicalANDExpression();
+
+        while (match('||')) {
+            lex();
+            expr = {
+                type: Syntax.LogicalExpression,
+                operator: '||',
+                left: expr,
+                right: parseLogicalANDExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.12 Conditional Operator
+
+    function parseConditionalExpression() {
+        var expr, previousAllowIn, consequent;
+
+        expr = parseLogicalORExpression();
+
+        if (match('?')) {
+            lex();
+            previousAllowIn = state.allowIn;
+            state.allowIn = true;
+            consequent = parseAssignmentExpression();
+            state.allowIn = previousAllowIn;
+            expect(':');
+
+            expr = {
+                type: Syntax.ConditionalExpression,
+                test: expr,
+                consequent: consequent,
+                alternate: parseAssignmentExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.13 Assignment Operators
+
+    function parseAssignmentExpression() {
+        var token, expr;
+
+        token = lookahead();
+        expr = parseConditionalExpression();
+
+        if (matchAssign()) {
+            // LeftHandSideExpression
+            if (!isLeftHandSide(expr)) {
+                throwErrorTolerant({}, Messages.InvalidLHSInAssignment);
+            }
+
+            // 11.13.1
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant(token, Messages.StrictLHSAssignment);
+            }
+
+            expr = {
+                type: Syntax.AssignmentExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseAssignmentExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.14 Comma Operator
+
+    function parseExpression() {
+        var expr = parseAssignmentExpression();
+
+        if (match(',')) {
+            expr = {
+                type: Syntax.SequenceExpression,
+                expressions: [ expr ]
+            };
+
+            while (index < length) {
+                if (!match(',')) {
+                    break;
+                }
+                lex();
+                expr.expressions.push(parseAssignmentExpression());
+            }
+
+        }
+        return expr;
+    }
+
+    // 12.1 Block
+
+    function parseStatementList() {
+        var list = [],
+            statement;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            statement = parseSourceElement();
+            if (typeof statement === 'undefined') {
+                break;
+            }
+            list.push(statement);
+        }
+
+        return list;
+    }
+
+    function parseBlock() {
+        var block;
+
+        expect('{');
+
+        block = parseStatementList();
+
+        expect('}');
+
+        return {
+            type: Syntax.BlockStatement,
+            body: block
+        };
+    }
+
+    // 12.2 Variable Statement
+
+    function parseVariableIdentifier() {
+        var token = lex();
+
+        if (token.type !== Token.Identifier) {
+            throwUnexpected(token);
+        }
+
+        return {
+            type: Syntax.Identifier,
+            name: token.value
+        };
+    }
+
+    function parseVariableDeclaration(kind) {
+        var id = parseVariableIdentifier(),
+            init = null;
+
+        // 12.2.1
+        if (strict && isRestrictedWord(id.name)) {
+            throwErrorTolerant({}, Messages.StrictVarName);
+        }
+
+        if (kind === 'const') {
+            expect('=');
+            init = parseAssignmentExpression();
+        } else if (match('=')) {
+            lex();
+            init = parseAssignmentExpression();
+        }
+
+        return {
+            type: Syntax.VariableDeclarator,
+            id: id,
+            init: init
+        };
+    }
+
+    function parseVariableDeclarationList(kind) {
+        var list = [];
+
+        do {
+            list.push(parseVariableDeclaration(kind));
+            if (!match(',')) {
+                break;
+            }
+            lex();
+        } while (index < length);
+
+        return list;
+    }
+
+    function parseVariableStatement() {
+        var declarations;
+
+        expectKeyword('var');
+
+        declarations = parseVariableDeclarationList();
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.VariableDeclaration,
+            declarations: declarations,
+            kind: 'var'
+        };
+    }
+
+    // kind may be `const` or `let`
+    // Both are experimental and not in the specification yet.
+    // see http://wiki.ecmascript.org/doku.php?id=harmony:const
+    // and http://wiki.ecmascript.org/doku.php?id=harmony:let
+    function parseConstLetDeclaration(kind) {
+        var declarations;
+
+        expectKeyword(kind);
+
+        declarations = parseVariableDeclarationList(kind);
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.VariableDeclaration,
+            declarations: declarations,
+            kind: kind
+        };
+    }
+
+    // 12.3 Empty Statement
+
+    function parseEmptyStatement() {
+        expect(';');
+
+        return {
+            type: Syntax.EmptyStatement
+        };
+    }
+
+    // 12.4 Expression Statement
+
+    function parseExpressionStatement() {
+        var expr = parseExpression();
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.ExpressionStatement,
+            expression: expr
+        };
+    }
+
+    // 12.5 If statement
+
+    function parseIfStatement() {
+        var test, consequent, alternate;
+
+        expectKeyword('if');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        consequent = parseStatement();
+
+        if (matchKeyword('else')) {
+            lex();
+            alternate = parseStatement();
+        } else {
+            alternate = null;
+        }
+
+        return {
+            type: Syntax.IfStatement,
+            test: test,
+            consequent: consequent,
+            alternate: alternate
+        };
+    }
+
+    // 12.6 Iteration Statements
+
+    function parseDoWhileStatement() {
+        var body, test, oldInIteration;
+
+        expectKeyword('do');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        expectKeyword('while');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        if (match(';')) {
+            lex();
+        }
+
+        return {
+            type: Syntax.DoWhileStatement,
+            body: body,
+            test: test
+        };
+    }
+
+    function parseWhileStatement() {
+        var test, body, oldInIteration;
+
+        expectKeyword('while');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        return {
+            type: Syntax.WhileStatement,
+            test: test,
+            body: body
+        };
+    }
+
+    function parseForVariableDeclaration() {
+        var token = lex();
+
+        return {
+            type: Syntax.VariableDeclaration,
+            declarations: parseVariableDeclarationList(),
+            kind: token.value
+        };
+    }
+
+    function parseForStatement() {
+        var init, test, update, left, right, body, oldInIteration;
+
+        init = test = update = null;
+
+        expectKeyword('for');
+
+        expect('(');
+
+        if (match(';')) {
+            lex();
+        } else {
+            if (matchKeyword('var') || matchKeyword('let')) {
+                state.allowIn = false;
+                init = parseForVariableDeclaration();
+                state.allowIn = true;
+
+                if (init.declarations.length === 1 && matchKeyword('in')) {
+                    lex();
+                    left = init;
+                    right = parseExpression();
+                    init = null;
+                }
+            } else {
+                state.allowIn = false;
+                init = parseExpression();
+                state.allowIn = true;
+
+                if (matchKeyword('in')) {
+                    // LeftHandSideExpression
+                    if (!isLeftHandSide(init)) {
+                        throwErrorTolerant({}, Messages.InvalidLHSInForIn);
+                    }
+
+                    lex();
+                    left = init;
+                    right = parseExpression();
+                    init = null;
+                }
+            }
+
+            if (typeof left === 'undefined') {
+                expect(';');
+            }
+        }
+
+        if (typeof left === 'undefined') {
+
+            if (!match(';')) {
+                test = parseExpression();
+            }
+            expect(';');
+
+            if (!match(')')) {
+                update = parseExpression();
+            }
+        }
+
+        expect(')');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        if (typeof left === 'undefined') {
+            return {
+                type: Syntax.ForStatement,
+                init: init,
+                test: test,
+                update: update,
+                body: body
+            };
+        }
+
+        return {
+            type: Syntax.ForInStatement,
+            left: left,
+            right: right,
+            body: body,
+            each: false
+        };
+    }
+
+    // 12.7 The continue statement
+
+    function parseContinueStatement() {
+        var token, label = null;
+
+        expectKeyword('continue');
+
+        // Optimize the most common form: 'continue;'.
+        if (source[index] === ';') {
+            lex();
+
+            if (!state.inIteration) {
+                throwError({}, Messages.IllegalContinue);
+            }
+
+            return {
+                type: Syntax.ContinueStatement,
+                label: null
+            };
+        }
+
+        if (peekLineTerminator()) {
+            if (!state.inIteration) {
+                throwError({}, Messages.IllegalContinue);
+            }
+
+            return {
+                type: Syntax.ContinueStatement,
+                label: null
+            };
+        }
+
+        token = lookahead();
+        if (token.type === Token.Identifier) {
+            label = parseVariableIdentifier();
+
+            if (!Object.prototype.hasOwnProperty.call(state.labelSet, label.name)) {
+                throwError({}, Messages.UnknownLabel, label.name);
+            }
+        }
+
+        consumeSemicolon();
+
+        if (label === null && !state.inIteration) {
+            throwError({}, Messages.IllegalContinue);
+        }
+
+        return {
+            type: Syntax.ContinueStatement,
+            label: label
+        };
+    }
+
+    // 12.8 The break statement
+
+    function parseBreakStatement() {
+        var token, label = null;
+
+        expectKeyword('break');
+
+        // Optimize the most common form: 'break;'.
+        if (source[index] === ';') {
+            lex();
+
+            if (!(state.inIteration || state.inSwitch)) {
+                throwError({}, Messages.IllegalBreak);
+            }
+
+            return {
+                type: Syntax.BreakStatement,
+                label: null
+            };
+        }
+
+        if (peekLineTerminator()) {
+            if (!(state.inIteration || state.inSwitch)) {
+                throwError({}, Messages.IllegalBreak);
+            }
+
+            return {
+                type: Syntax.BreakStatement,
+                label: null
+            };
+        }
+
+        token = lookahead();
+        if (token.type === Token.Identifier) {
+            label = parseVariableIdentifier();
+
+            if (!Object.prototype.hasOwnProperty.call(state.labelSet, label.name)) {
+                throwError({}, Messages.UnknownLabel, label.name);
+            }
+        }
+
+        consumeSemicolon();
+
+        if (label === null && !(state.inIteration || state.inSwitch)) {
+            throwError({}, Messages.IllegalBreak);
+        }
+
+        return {
+            type: Syntax.BreakStatement,
+            label: label
+        };
+    }
+
+    // 12.9 The return statement
+
+    function parseReturnStatement() {
+        var token, argument = null;
+
+        expectKeyword('return');
+
+        if (!state.inFunctionBody) {
+            throwErrorTolerant({}, Messages.IllegalReturn);
+        }
+
+        // 'return' followed by a space and an identifier is very common.
+        if (source[index] === ' ') {
+            if (isIdentifierStart(source[index + 1])) {
+                argument = parseExpression();
+                consumeSemicolon();
+                return {
+                    type: Syntax.ReturnStatement,
+                    argument: argument
+                };
+            }
+        }
+
+        if (peekLineTerminator()) {
+            return {
+                type: Syntax.ReturnStatement,
+                argument: null
+            };
+        }
+
+        if (!match(';')) {
+            token = lookahead();
+            if (!match('}') && token.type !== Token.EOF) {
+                argument = parseExpression();
+            }
+        }
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.ReturnStatement,
+            argument: argument
+        };
+    }
+
+    // 12.10 The with statement
+
+    function parseWithStatement() {
+        var object, body;
+
+        if (strict) {
+            throwErrorTolerant({}, Messages.StrictModeWith);
+        }
+
+        expectKeyword('with');
+
+        expect('(');
+
+        object = parseExpression();
+
+        expect(')');
+
+        body = parseStatement();
+
+        return {
+            type: Syntax.WithStatement,
+            object: object,
+            body: body
+        };
+    }
+
+    // 12.10 The swith statement
+
+    function parseSwitchCase() {
+        var test,
+            consequent = [],
+            statement;
+
+        if (matchKeyword('default')) {
+            lex();
+            test = null;
+        } else {
+            expectKeyword('case');
+            test = parseExpression();
+        }
+        expect(':');
+
+        while (index < length) {
+            if (match('}') || matchKeyword('default') || matchKeyword('case')) {
+                break;
+            }
+            statement = parseStatement();
+            if (typeof statement === 'undefined') {
+                break;
+            }
+            consequent.push(statement);
+        }
+
+        return {
+            type: Syntax.SwitchCase,
+            test: test,
+            consequent: consequent
+        };
+    }
+
+    function parseSwitchStatement() {
+        var discriminant, cases, clause, oldInSwitch, defaultFound;
+
+        expectKeyword('switch');
+
+        expect('(');
+
+        discriminant = parseExpression();
+
+        expect(')');
+
+        expect('{');
+
+        cases = [];
+
+        if (match('}')) {
+            lex();
+            return {
+                type: Syntax.SwitchStatement,
+                discriminant: discriminant,
+                cases: cases
+            };
+        }
+
+        oldInSwitch = state.inSwitch;
+        state.inSwitch = true;
+        defaultFound = false;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            clause = parseSwitchCase();
+            if (clause.test === null) {
+                if (defaultFound) {
+                    throwError({}, Messages.MultipleDefaultsInSwitch);
+                }
+                defaultFound = true;
+            }
+            cases.push(clause);
+        }
+
+        state.inSwitch = oldInSwitch;
+
+        expect('}');
+
+        return {
+            type: Syntax.SwitchStatement,
+            discriminant: discriminant,
+            cases: cases
+        };
+    }
+
+    // 12.13 The throw statement
+
+    function parseThrowStatement() {
+        var argument;
+
+        expectKeyword('throw');
+
+        if (peekLineTerminator()) {
+            throwError({}, Messages.NewlineAfterThrow);
+        }
+
+        argument = parseExpression();
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.ThrowStatement,
+            argument: argument
+        };
+    }
+
+    // 12.14 The try statement
+
+    function parseCatchClause() {
+        var param;
+
+        expectKeyword('catch');
+
+        expect('(');
+        if (match(')')) {
+            throwUnexpected(lookahead());
+        }
+
+        param = parseVariableIdentifier();
+        // 12.14.1
+        if (strict && isRestrictedWord(param.name)) {
+            throwErrorTolerant({}, Messages.StrictCatchVariable);
+        }
+
+        expect(')');
+
+        return {
+            type: Syntax.CatchClause,
+            param: param,
+            body: parseBlock()
+        };
+    }
+
+    function parseTryStatement() {
+        var block, handlers = [], finalizer = null;
+
+        expectKeyword('try');
+
+        block = parseBlock();
+
+        if (matchKeyword('catch')) {
+            handlers.push(parseCatchClause());
+        }
+
+        if (matchKeyword('finally')) {
+            lex();
+            finalizer = parseBlock();
+        }
+
+        if (handlers.length === 0 && !finalizer) {
+            throwError({}, Messages.NoCatchOrFinally);
+        }
+
+        return {
+            type: Syntax.TryStatement,
+            block: block,
+            guardedHandlers: [],
+            handlers: handlers,
+            finalizer: finalizer
+        };
+    }
+
+    // 12.15 The debugger statement
+
+    function parseDebuggerStatement() {
+        expectKeyword('debugger');
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.DebuggerStatement
+        };
+    }
+
+    // 12 Statements
+
+    function parseStatement() {
+        var token = lookahead(),
+            expr,
+            labeledBody;
+
+        if (token.type === Token.EOF) {
+            throwUnexpected(token);
+        }
+
+        if (token.type === Token.Punctuator) {
+            switch (token.value) {
+            case ';':
+                return parseEmptyStatement();
+            case '{':
+                return parseBlock();
+            case '(':
+                return parseExpressionStatement();
+            default:
+                break;
+            }
+        }
+
+        if (token.type === Token.Keyword) {
+            switch (token.value) {
+            case 'break':
+                return parseBreakStatement();
+            case 'continue':
+                return parseContinueStatement();
+            case 'debugger':
+                return parseDebuggerStatement();
+            case 'do':
+                return parseDoWhileStatement();
+            case 'for':
+                return parseForStatement();
+            case 'function':
+                return parseFunctionDeclaration();
+            case 'if':
+                return parseIfStatement();
+            case 'return':
+                return parseReturnStatement();
+            case 'switch':
+                return parseSwitchStatement();
+            case 'throw':
+                return parseThrowStatement();
+            case 'try':
+                return parseTryStatement();
+            case 'var':
+                return parseVariableStatement();
+            case 'while':
+                return parseWhileStatement();
+            case 'with':
+                return parseWithStatement();
+            default:
+                break;
+            }
+        }
+
+        expr = parseExpression();
+
+        // 12.12 Labelled Statements
+        if ((expr.type === Syntax.Identifier) && match(':')) {
+            lex();
+
+            if (Object.prototype.hasOwnProperty.call(state.labelSet, expr.name)) {
+                throwError({}, Messages.Redeclaration, 'Label', expr.name);
+            }
+
+            state.labelSet[expr.name] = true;
+            labeledBody = parseStatement();
+            delete state.labelSet[expr.name];
+
+            return {
+                type: Syntax.LabeledStatement,
+                label: expr,
+                body: labeledBody
+            };
+        }
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.ExpressionStatement,
+            expression: expr
+        };
+    }
+
+    // 13 Function Definition
+
+    function parseFunctionSourceElements() {
+        var sourceElement, sourceElements = [], token, directive, firstRestricted,
+            oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody;
+
+        expect('{');
+
+        while (index < length) {
+            token = lookahead();
+            if (token.type !== Token.StringLiteral) {
+                break;
+            }
+
+            sourceElement = parseSourceElement();
+            sourceElements.push(sourceElement);
+            if (sourceElement.expression.type !== Syntax.Literal) {
+                // this is not directive
+                break;
+            }
+            directive = sliceSource(token.range[0] + 1, token.range[1] - 1);
+            if (directive === 'use strict') {
+                strict = true;
+                if (firstRestricted) {
+                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
+                }
+            } else {
+                if (!firstRestricted && token.octal) {
+                    firstRestricted = token;
+                }
+            }
+        }
+
+        oldLabelSet = state.labelSet;
+        oldInIteration = state.inIteration;
+        oldInSwitch = state.inSwitch;
+        oldInFunctionBody = state.inFunctionBody;
+
+        state.labelSet = {};
+        state.inIteration = false;
+        state.inSwitch = false;
+        state.inFunctionBody = true;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            sourceElement = parseSourceElement();
+            if (typeof sourceElement === 'undefined') {
+                break;
+            }
+            sourceElements.push(sourceElement);
+        }
+
+        expect('}');
+
+        state.labelSet = oldLabelSet;
+        state.inIteration = oldInIteration;
+        state.inSwitch = oldInSwitch;
+        state.inFunctionBody = oldInFunctionBody;
+
+        return {
+            type: Syntax.BlockStatement,
+            body: sourceElements
+        };
+    }
+
+    function parseFunctionDeclaration() {
+        var id, param, params = [], body, token, stricted, firstRestricted, message, previousStrict, paramSet;
+
+        expectKeyword('function');
+        token = lookahead();
+        id = parseVariableIdentifier();
+        if (strict) {
+            if (isRestrictedWord(token.value)) {
+                throwErrorTolerant(token, Messages.StrictFunctionName);
+            }
+        } else {
+            if (isRestrictedWord(token.value)) {
+                firstRestricted = token;
+                message = Messages.StrictFunctionName;
+            } else if (isStrictModeReservedWord(token.value)) {
+                firstRestricted = token;
+                message = Messages.StrictReservedWord;
+            }
+        }
+
+        expect('(');
+
+        if (!match(')')) {
+            paramSet = {};
+            while (index < length) {
+                token = lookahead();
+                param = parseVariableIdentifier();
+                if (strict) {
+                    if (isRestrictedWord(token.value)) {
+                        stricted = token;
+                        message = Messages.StrictParamName;
+                    }
+                    if (Object.prototype.hasOwnProperty.call(paramSet, token.value)) {
+                        stricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                } else if (!firstRestricted) {
+                    if (isRestrictedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamName;
+                    } else if (isStrictModeReservedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictReservedWord;
+                    } else if (Object.prototype.hasOwnProperty.call(paramSet, token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                }
+                params.push(param);
+                paramSet[param.name] = true;
+                if (match(')')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        previousStrict = strict;
+        body = parseFunctionSourceElements();
+        if (strict && firstRestricted) {
+            throwError(firstRestricted, message);
+        }
+        if (strict && stricted) {
+            throwErrorTolerant(stricted, message);
+        }
+        strict = previousStrict;
+
+        return {
+            type: Syntax.FunctionDeclaration,
+            id: id,
+            params: params,
+            defaults: [],
+            body: body,
+            rest: null,
+            generator: false,
+            expression: false
+        };
+    }
+
+    function parseFunctionExpression() {
+        var token, id = null, stricted, firstRestricted, message, param, params = [], body, previousStrict, paramSet;
+
+        expectKeyword('function');
+
+        if (!match('(')) {
+            token = lookahead();
+            id = parseVariableIdentifier();
+            if (strict) {
+                if (isRestrictedWord(token.value)) {
+                    throwErrorTolerant(token, Messages.StrictFunctionName);
+                }
+            } else {
+                if (isRestrictedWord(token.value)) {
+                    firstRestricted = token;
+                    message = Messages.StrictFunctionName;
+                } else if (isStrictModeReservedWord(token.value)) {
+                    firstRestricted = token;
+                    message = Messages.StrictReservedWord;
+                }
+            }
+        }
+
+        expect('(');
+
+        if (!match(')')) {
+            paramSet = {};
+            while (index < length) {
+                token = lookahead();
+                param = parseVariableIdentifier();
+                if (strict) {
+                    if (isRestrictedWord(token.value)) {
+                        stricted = token;
+                        message = Messages.StrictParamName;
+                    }
+                    if (Object.prototype.hasOwnProperty.call(paramSet, token.value)) {
+                        stricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                } else if (!firstRestricted) {
+                    if (isRestrictedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamName;
+                    } else if (isStrictModeReservedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictReservedWord;
+                    } else if (Object.prototype.hasOwnProperty.call(paramSet, token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                }
+                params.push(param);
+                paramSet[param.name] = true;
+                if (match(')')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        previousStrict = strict;
+        body = parseFunctionSourceElements();
+        if (strict && firstRestricted) {
+            throwError(firstRestricted, message);
+        }
+        if (strict && stricted) {
+            throwErrorTolerant(stricted, message);
+        }
+        strict = previousStrict;
+
+        return {
+            type: Syntax.FunctionExpression,
+            id: id,
+            params: params,
+            defaults: [],
+            body: body,
+            rest: null,
+            generator: false,
+            expression: false
+        };
+    }
+
+    // 14 Program
+
+    function parseSourceElement() {
+        var token = lookahead();
+
+        if (token.type === Token.Keyword) {
+            switch (token.value) {
+            case 'const':
+            case 'let':
+                return parseConstLetDeclaration(token.value);
+            case 'function':
+                return parseFunctionDeclaration();
+            default:
+                return parseStatement();
+            }
+        }
+
+        if (token.type !== Token.EOF) {
+            return parseStatement();
+        }
+    }
+
+    function parseSourceElements() {
+        var sourceElement, sourceElements = [], token, directive, firstRestricted;
+
+        while (index < length) {
+            token = lookahead();
+            if (token.type !== Token.StringLiteral) {
+                break;
+            }
+
+            sourceElement = parseSourceElement();
+            sourceElements.push(sourceElement);
+            if (sourceElement.expression.type !== Syntax.Literal) {
+                // this is not directive
+                break;
+            }
+            directive = sliceSource(token.range[0] + 1, token.range[1] - 1);
+            if (directive === 'use strict') {
+                strict = true;
+                if (firstRestricted) {
+                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
+                }
+            } else {
+                if (!firstRestricted && token.octal) {
+                    firstRestricted = token;
+                }
+            }
+        }
+
+        while (index < length) {
+            sourceElement = parseSourceElement();
+            if (typeof sourceElement === 'undefined') {
+                break;
+            }
+            sourceElements.push(sourceElement);
+        }
+        return sourceElements;
+    }
+
+    function parseProgram() {
+        var program;
+        strict = false;
+        program = {
+            type: Syntax.Program,
+            body: parseSourceElements()
+        };
+        return program;
+    }
+
+    // The following functions are needed only when the option to preserve
+    // the comments is active.
+
+    function addComment(type, value, start, end, loc) {
+        assert(typeof start === 'number', 'Comment must have valid position');
+
+        // Because the way the actual token is scanned, often the comments
+        // (if any) are skipped twice during the lexical analysis.
+        // Thus, we need to skip adding a comment if the comment array already
+        // handled it.
+        if (extra.comments.length > 0) {
+            if (extra.comments[extra.comments.length - 1].range[1] > start) {
+                return;
+            }
+        }
+
+        extra.comments.push({
+            type: type,
+            value: value,
+            range: [start, end],
+            loc: loc
+        });
+    }
+
+    function scanComment() {
+        var comment, ch, loc, start, blockComment, lineComment;
+
+        comment = '';
+        blockComment = false;
+        lineComment = false;
+
+        while (index < length) {
+            ch = source[index];
+
+            if (lineComment) {
+                ch = source[index++];
+                if (isLineTerminator(ch)) {
+                    loc.end = {
+                        line: lineNumber,
+                        column: index - lineStart - 1
+                    };
+                    lineComment = false;
+                    addComment('Line', comment, start, index - 1, loc);
+                    if (ch === '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                    ++lineNumber;
+                    lineStart = index;
+                    comment = '';
+                } else if (index >= length) {
+                    lineComment = false;
+                    comment += ch;
+                    loc.end = {
+                        line: lineNumber,
+                        column: length - lineStart
+                    };
+                    addComment('Line', comment, start, length, loc);
+                } else {
+                    comment += ch;
+                }
+            } else if (blockComment) {
+                if (isLineTerminator(ch)) {
+                    if (ch === '\r' && source[index + 1] === '\n') {
+                        ++index;
+                        comment += '\r\n';
+                    } else {
+                        comment += ch;
+                    }
+                    ++lineNumber;
+                    ++index;
+                    lineStart = index;
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                } else {
+                    ch = source[index++];
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                    comment += ch;
+                    if (ch === '*') {
+                        ch = source[index];
+                        if (ch === '/') {
+                            comment = comment.substr(0, comment.length - 1);
+                            blockComment = false;
+                            ++index;
+                            loc.end = {
+                                line: lineNumber,
+                                column: index - lineStart
+                            };
+                            addComment('Block', comment, start, index, loc);
+                            comment = '';
+                        }
+                    }
+                }
+            } else if (ch === '/') {
+                ch = source[index + 1];
+                if (ch === '/') {
+                    loc = {
+                        start: {
+                            line: lineNumber,
+                            column: index - lineStart
+                        }
+                    };
+                    start = index;
+                    index += 2;
+                    lineComment = true;
+                    if (index >= length) {
+                        loc.end = {
+                            line: lineNumber,
+                            column: index - lineStart
+                        };
+                        lineComment = false;
+                        addComment('Line', comment, start, index, loc);
+                    }
+                } else if (ch === '*') {
+                    start = index;
+                    index += 2;
+                    blockComment = true;
+                    loc = {
+                        start: {
+                            line: lineNumber,
+                            column: index - lineStart - 2
+                        }
+                    };
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                } else {
+                    break;
+                }
+            } else if (isWhiteSpace(ch)) {
+                ++index;
+            } else if (isLineTerminator(ch)) {
+                ++index;
+                if (ch ===  '\r' && source[index] === '\n') {
+                    ++index;
+                }
+                ++lineNumber;
+                lineStart = index;
+            } else {
+                break;
+            }
+        }
+    }
+
+    function filterCommentLocation() {
+        var i, entry, comment, comments = [];
+
+        for (i = 0; i < extra.comments.length; ++i) {
+            entry = extra.comments[i];
+            comment = {
+                type: entry.type,
+                value: entry.value
+            };
+            if (extra.range) {
+                comment.range = entry.range;
+            }
+            if (extra.loc) {
+                comment.loc = entry.loc;
+            }
+            comments.push(comment);
+        }
+
+        extra.comments = comments;
+    }
+
+    function collectToken() {
+        var start, loc, token, range, value;
+
+        skipComment();
+        start = index;
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        token = extra.advance();
+        loc.end = {
+            line: lineNumber,
+            column: index - lineStart
+        };
+
+        if (token.type !== Token.EOF) {
+            range = [token.range[0], token.range[1]];
+            value = sliceSource(token.range[0], token.range[1]);
+            extra.tokens.push({
+                type: TokenName[token.type],
+                value: value,
+                range: range,
+                loc: loc
+            });
+        }
+
+        return token;
+    }
+
+    function collectRegex() {
+        var pos, loc, regex, token;
+
+        skipComment();
+
+        pos = index;
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        regex = extra.scanRegExp();
+        loc.end = {
+            line: lineNumber,
+            column: index - lineStart
+        };
+
+        // Pop the previous token, which is likely '/' or '/='
+        if (extra.tokens.length > 0) {
+            token = extra.tokens[extra.tokens.length - 1];
+            if (token.range[0] === pos && token.type === 'Punctuator') {
+                if (token.value === '/' || token.value === '/=') {
+                    extra.tokens.pop();
+                }
+            }
+        }
+
+        extra.tokens.push({
+            type: 'RegularExpression',
+            value: regex.literal,
+            range: [pos, index],
+            loc: loc
+        });
+
+        return regex;
+    }
+
+    function filterTokenLocation() {
+        var i, entry, token, tokens = [];
+
+        for (i = 0; i < extra.tokens.length; ++i) {
+            entry = extra.tokens[i];
+            token = {
+                type: entry.type,
+                value: entry.value
+            };
+            if (extra.range) {
+                token.range = entry.range;
+            }
+            if (extra.loc) {
+                token.loc = entry.loc;
+            }
+            tokens.push(token);
+        }
+
+        extra.tokens = tokens;
+    }
+
+    function createLiteral(token) {
+        return {
+            type: Syntax.Literal,
+            value: token.value
+        };
+    }
+
+    function createRawLiteral(token) {
+        return {
+            type: Syntax.Literal,
+            value: token.value,
+            raw: sliceSource(token.range[0], token.range[1])
+        };
+    }
+
+    function createLocationMarker() {
+        var marker = {};
+
+        marker.range = [index, index];
+        marker.loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            },
+            end: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        marker.end = function () {
+            this.range[1] = index;
+            this.loc.end.line = lineNumber;
+            this.loc.end.column = index - lineStart;
+        };
+
+        marker.applyGroup = function (node) {
+            if (extra.range) {
+                node.groupRange = [this.range[0], this.range[1]];
+            }
+            if (extra.loc) {
+                node.groupLoc = {
+                    start: {
+                        line: this.loc.start.line,
+                        column: this.loc.start.column
+                    },
+                    end: {
+                        line: this.loc.end.line,
+                        column: this.loc.end.column
+                    }
+                };
+            }
+        };
+
+        marker.apply = function (node) {
+            if (extra.range) {
+                node.range = [this.range[0], this.range[1]];
+            }
+            if (extra.loc) {
+                node.loc = {
+                    start: {
+                        line: this.loc.start.line,
+                        column: this.loc.start.column
+                    },
+                    end: {
+                        line: this.loc.end.line,
+                        column: this.loc.end.column
+                    }
+                };
+            }
+        };
+
+        return marker;
+    }
+
+    function trackGroupExpression() {
+        var marker, expr;
+
+        skipComment();
+        marker = createLocationMarker();
+        expect('(');
+
+        expr = parseExpression();
+
+        expect(')');
+
+        marker.end();
+        marker.applyGroup(expr);
+
+        return expr;
+    }
+
+    function trackLeftHandSideExpression() {
+        var marker, expr;
+
+        skipComment();
+        marker = createLocationMarker();
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[')) {
+            if (match('[')) {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: true,
+                    object: expr,
+                    property: parseComputedMember()
+                };
+                marker.end();
+                marker.apply(expr);
+            } else {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: false,
+                    object: expr,
+                    property: parseNonComputedMember()
+                };
+                marker.end();
+                marker.apply(expr);
+            }
+        }
+
+        return expr;
+    }
+
+    function trackLeftHandSideExpressionAllowCall() {
+        var marker, expr;
+
+        skipComment();
+        marker = createLocationMarker();
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[') || match('(')) {
+            if (match('(')) {
+                expr = {
+                    type: Syntax.CallExpression,
+                    callee: expr,
+                    'arguments': parseArguments()
+                };
+                marker.end();
+                marker.apply(expr);
+            } else if (match('[')) {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: true,
+                    object: expr,
+                    property: parseComputedMember()
+                };
+                marker.end();
+                marker.apply(expr);
+            } else {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: false,
+                    object: expr,
+                    property: parseNonComputedMember()
+                };
+                marker.end();
+                marker.apply(expr);
+            }
+        }
+
+        return expr;
+    }
+
+    function filterGroup(node) {
+        var n, i, entry;
+
+        n = (Object.prototype.toString.apply(node) === '[object Array]') ? [] : {};
+        for (i in node) {
+            if (node.hasOwnProperty(i) && i !== 'groupRange' && i !== 'groupLoc') {
+                entry = node[i];
+                if (entry === null || typeof entry !== 'object' || entry instanceof RegExp) {
+                    n[i] = entry;
+                } else {
+                    n[i] = filterGroup(entry);
+                }
+            }
+        }
+        return n;
+    }
+
+    function wrapTrackingFunction(range, loc) {
+
+        return function (parseFunction) {
+
+            function isBinary(node) {
+                return node.type === Syntax.LogicalExpression ||
+                    node.type === Syntax.BinaryExpression;
+            }
+
+            function visit(node) {
+                var start, end;
+
+                if (isBinary(node.left)) {
+                    visit(node.left);
+                }
+                if (isBinary(node.right)) {
+                    visit(node.right);
+                }
+
+                if (range) {
+                    if (node.left.groupRange || node.right.groupRange) {
+                        start = node.left.groupRange ? node.left.groupRange[0] : node.left.range[0];
+                        end = node.right.groupRange ? node.right.groupRange[1] : node.right.range[1];
+                        node.range = [start, end];
+                    } else if (typeof node.range === 'undefined') {
+                        start = node.left.range[0];
+                        end = node.right.range[1];
+                        node.range = [start, end];
+                    }
+                }
+                if (loc) {
+                    if (node.left.groupLoc || node.right.groupLoc) {
+                        start = node.left.groupLoc ? node.left.groupLoc.start : node.left.loc.start;
+                        end = node.right.groupLoc ? node.right.groupLoc.end : node.right.loc.end;
+                        node.loc = {
+                            start: start,
+                            end: end
+                        };
+                    } else if (typeof node.loc === 'undefined') {
+                        node.loc = {
+                            start: node.left.loc.start,
+                            end: node.right.loc.end
+                        };
+                    }
+                }
+            }
+
+            return function () {
+                var marker, node;
+
+                skipComment();
+
+                marker = createLocationMarker();
+                node = parseFunction.apply(null, arguments);
+                marker.end();
+
+                if (range && typeof node.range === 'undefined') {
+                    marker.apply(node);
+                }
+
+                if (loc && typeof node.loc === 'undefined') {
+                    marker.apply(node);
+                }
+
+                if (isBinary(node)) {
+                    visit(node);
+                }
+
+                return node;
+            };
+        };
+    }
+
+    function patch() {
+
+        var wrapTracking;
+
+        if (extra.comments) {
+            extra.skipComment = skipComment;
+            skipComment = scanComment;
+        }
+
+        if (extra.raw) {
+            extra.createLiteral = createLiteral;
+            createLiteral = createRawLiteral;
+        }
+
+        if (extra.range || extra.loc) {
+
+            extra.parseGroupExpression = parseGroupExpression;
+            extra.parseLeftHandSideExpression = parseLeftHandSideExpression;
+            extra.parseLeftHandSideExpressionAllowCall = parseLeftHandSideExpressionAllowCall;
+            parseGroupExpression = trackGroupExpression;
+            parseLeftHandSideExpression = trackLeftHandSideExpression;
+            parseLeftHandSideExpressionAllowCall = trackLeftHandSideExpressionAllowCall;
+
+            wrapTracking = wrapTrackingFunction(extra.range, extra.loc);
+
+            extra.parseAdditiveExpression = parseAdditiveExpression;
+            extra.parseAssignmentExpression = parseAssignmentExpression;
+            extra.parseBitwiseANDExpression = parseBitwiseANDExpression;
+            extra.parseBitwiseORExpression = parseBitwiseORExpression;
+            extra.parseBitwiseXORExpression = parseBitwiseXORExpression;
+            extra.parseBlock = parseBlock;
+            extra.parseFunctionSourceElements = parseFunctionSourceElements;
+            extra.parseCatchClause = parseCatchClause;
+            extra.parseComputedMember = parseComputedMember;
+            extra.parseConditionalExpression = parseConditionalExpression;
+            extra.parseConstLetDeclaration = parseConstLetDeclaration;
+            extra.parseEqualityExpression = parseEqualityExpression;
+            extra.parseExpression = parseExpression;
+            extra.parseForVariableDeclaration = parseForVariableDeclaration;
+            extra.parseFunctionDeclaration = parseFunctionDeclaration;
+            extra.parseFunctionExpression = parseFunctionExpression;
+            extra.parseLogicalANDExpression = parseLogicalANDExpression;
+            extra.parseLogicalORExpression = parseLogicalORExpression;
+            extra.parseMultiplicativeExpression = parseMultiplicativeExpression;
+            extra.parseNewExpression = parseNewExpression;
+            extra.parseNonComputedProperty = parseNonComputedProperty;
+            extra.parseObjectProperty = parseObjectProperty;
+            extra.parseObjectPropertyKey = parseObjectPropertyKey;
+            extra.parsePostfixExpression = parsePostfixExpression;
+            extra.parsePrimaryExpression = parsePrimaryExpression;
+            extra.parseProgram = parseProgram;
+            extra.parsePropertyFunction = parsePropertyFunction;
+            extra.parseRelationalExpression = parseRelationalExpression;
+            extra.parseStatement = parseStatement;
+            extra.parseShiftExpression = parseShiftExpression;
+            extra.parseSwitchCase = parseSwitchCase;
+            extra.parseUnaryExpression = parseUnaryExpression;
+            extra.parseVariableDeclaration = parseVariableDeclaration;
+            extra.parseVariableIdentifier = parseVariableIdentifier;
+
+            parseAdditiveExpression = wrapTracking(extra.parseAdditiveExpression);
+            parseAssignmentExpression = wrapTracking(extra.parseAssignmentExpression);
+            parseBitwiseANDExpression = wrapTracking(extra.parseBitwiseANDExpression);
+            parseBitwiseORExpression = wrapTracking(extra.parseBitwiseORExpression);
+            parseBitwiseXORExpression = wrapTracking(extra.parseBitwiseXORExpression);
+            parseBlock = wrapTracking(extra.parseBlock);
+            parseFunctionSourceElements = wrapTracking(extra.parseFunctionSourceElements);
+            parseCatchClause = wrapTracking(extra.parseCatchClause);
+            parseComputedMember = wrapTracking(extra.parseComputedMember);
+            parseConditionalExpression = wrapTracking(extra.parseConditionalExpression);
+            parseConstLetDeclaration = wrapTracking(extra.parseConstLetDeclaration);
+            parseEqualityExpression = wrapTracking(extra.parseEqualityExpression);
+            parseExpression = wrapTracking(extra.parseExpression);
+            parseForVariableDeclaration = wrapTracking(extra.parseForVariableDeclaration);
+            parseFunctionDeclaration = wrapTracking(extra.parseFunctionDeclaration);
+            parseFunctionExpression = wrapTracking(extra.parseFunctionExpression);
+            parseLeftHandSideExpression = wrapTracking(parseLeftHandSideExpression);
+            parseLogicalANDExpression = wrapTracking(extra.parseLogicalANDExpression);
+            parseLogicalORExpression = wrapTracking(extra.parseLogicalORExpression);
+            parseMultiplicativeExpression = wrapTracking(extra.parseMultiplicativeExpression);
+            parseNewExpression = wrapTracking(extra.parseNewExpression);
+            parseNonComputedProperty = wrapTracking(extra.parseNonComputedProperty);
+            parseObjectProperty = wrapTracking(extra.parseObjectProperty);
+            parseObjectPropertyKey = wrapTracking(extra.parseObjectPropertyKey);
+            parsePostfixExpression = wrapTracking(extra.parsePostfixExpression);
+            parsePrimaryExpression = wrapTracking(extra.parsePrimaryExpression);
+            parseProgram = wrapTracking(extra.parseProgram);
+            parsePropertyFunction = wrapTracking(extra.parsePropertyFunction);
+            parseRelationalExpression = wrapTracking(extra.parseRelationalExpression);
+            parseStatement = wrapTracking(extra.parseStatement);
+            parseShiftExpression = wrapTracking(extra.parseShiftExpression);
+            parseSwitchCase = wrapTracking(extra.parseSwitchCase);
+            parseUnaryExpression = wrapTracking(extra.parseUnaryExpression);
+            parseVariableDeclaration = wrapTracking(extra.parseVariableDeclaration);
+            parseVariableIdentifier = wrapTracking(extra.parseVariableIdentifier);
+        }
+
+        if (typeof extra.tokens !== 'undefined') {
+            extra.advance = advance;
+            extra.scanRegExp = scanRegExp;
+
+            advance = collectToken;
+            scanRegExp = collectRegex;
+        }
+    }
+
+    function unpatch() {
+        if (typeof extra.skipComment === 'function') {
+            skipComment = extra.skipComment;
+        }
+
+        if (extra.raw) {
+            createLiteral = extra.createLiteral;
+        }
+
+        if (extra.range || extra.loc) {
+            parseAdditiveExpression = extra.parseAdditiveExpression;
+            parseAssignmentExpression = extra.parseAssignmentExpression;
+            parseBitwiseANDExpression = extra.parseBitwiseANDExpression;
+            parseBitwiseORExpression = extra.parseBitwiseORExpression;
+            parseBitwiseXORExpression = extra.parseBitwiseXORExpression;
+            parseBlock = extra.parseBlock;
+            parseFunctionSourceElements = extra.parseFunctionSourceElements;
+            parseCatchClause = extra.parseCatchClause;
+            parseComputedMember = extra.parseComputedMember;
+            parseConditionalExpression = extra.parseConditionalExpression;
+            parseConstLetDeclaration = extra.parseConstLetDeclaration;
+            parseEqualityExpression = extra.parseEqualityExpression;
+            parseExpression = extra.parseExpression;
+            parseForVariableDeclaration = extra.parseForVariableDeclaration;
+            parseFunctionDeclaration = extra.parseFunctionDeclaration;
+            parseFunctionExpression = extra.parseFunctionExpression;
+            parseGroupExpression = extra.parseGroupExpression;
+            parseLeftHandSideExpression = extra.parseLeftHandSideExpression;
+            parseLeftHandSideExpressionAllowCall = extra.parseLeftHandSideExpressionAllowCall;
+            parseLogicalANDExpression = extra.parseLogicalANDExpression;
+            parseLogicalORExpression = extra.parseLogicalORExpression;
+            parseMultiplicativeExpression = extra.parseMultiplicativeExpression;
+            parseNewExpression = extra.parseNewExpression;
+            parseNonComputedProperty = extra.parseNonComputedProperty;
+            parseObjectProperty = extra.parseObjectProperty;
+            parseObjectPropertyKey = extra.parseObjectPropertyKey;
+            parsePrimaryExpression = extra.parsePrimaryExpression;
+            parsePostfixExpression = extra.parsePostfixExpression;
+            parseProgram = extra.parseProgram;
+            parsePropertyFunction = extra.parsePropertyFunction;
+            parseRelationalExpression = extra.parseRelationalExpression;
+            parseStatement = extra.parseStatement;
+            parseShiftExpression = extra.parseShiftExpression;
+            parseSwitchCase = extra.parseSwitchCase;
+            parseUnaryExpression = extra.parseUnaryExpression;
+            parseVariableDeclaration = extra.parseVariableDeclaration;
+            parseVariableIdentifier = extra.parseVariableIdentifier;
+        }
+
+        if (typeof extra.scanRegExp === 'function') {
+            advance = extra.advance;
+            scanRegExp = extra.scanRegExp;
+        }
+    }
+
+    function stringToArray(str) {
+        var length = str.length,
+            result = [],
+            i;
+        for (i = 0; i < length; ++i) {
+            result[i] = str.charAt(i);
+        }
+        return result;
+    }
+
+    function parse(code, options) {
+        var program, toString;
+
+        toString = String;
+        if (typeof code !== 'string' && !(code instanceof String)) {
+            code = toString(code);
+        }
+
+        source = code;
+        index = 0;
+        lineNumber = (source.length > 0) ? 1 : 0;
+        lineStart = 0;
+        length = source.length;
+        buffer = null;
+        state = {
+            allowIn: true,
+            labelSet: {},
+            inFunctionBody: false,
+            inIteration: false,
+            inSwitch: false
+        };
+
+        extra = {};
+        if (typeof options !== 'undefined') {
+            extra.range = (typeof options.range === 'boolean') && options.range;
+            extra.loc = (typeof options.loc === 'boolean') && options.loc;
+            extra.raw = (typeof options.raw === 'boolean') && options.raw;
+            if (typeof options.tokens === 'boolean' && options.tokens) {
+                extra.tokens = [];
+            }
+            if (typeof options.comment === 'boolean' && options.comment) {
+                extra.comments = [];
+            }
+            if (typeof options.tolerant === 'boolean' && options.tolerant) {
+                extra.errors = [];
+            }
+        }
+
+        if (length > 0) {
+            if (typeof source[0] === 'undefined') {
+                // Try first to convert to a string. This is good as fast path
+                // for old IE which understands string indexing for string
+                // literals only and not for string object.
+                if (code instanceof String) {
+                    source = code.valueOf();
+                }
+
+                // Force accessing the characters via an array.
+                if (typeof source[0] === 'undefined') {
+                    source = stringToArray(code);
+                }
+            }
+        }
+
+        patch();
+        try {
+            program = parseProgram();
+            if (typeof extra.comments !== 'undefined') {
+                filterCommentLocation();
+                program.comments = extra.comments;
+            }
+            if (typeof extra.tokens !== 'undefined') {
+                filterTokenLocation();
+                program.tokens = extra.tokens;
+            }
+            if (typeof extra.errors !== 'undefined') {
+                program.errors = extra.errors;
+            }
+            if (extra.range || extra.loc) {
+                program.body = filterGroup(program.body);
+            }
+        } catch (e) {
+            throw e;
+        } finally {
+            unpatch();
+            extra = {};
+        }
+
+        return program;
+    }
+
+    // Sync with package.json.
+    exports.version = '1.0.4';
+
+    exports.parse = parse;
+
+    // Deep copy.
+    exports.Syntax = (function () {
+        var name, types = {};
+
+        if (typeof Object.create === 'function') {
+            types = Object.create(null);
+        }
+
+        for (name in Syntax) {
+            if (Syntax.hasOwnProperty(name)) {
+                types[name] = Syntax[name];
+            }
+        }
+
+        if (typeof Object.freeze === 'function') {
+            Object.freeze(types);
+        }
+
+        return types;
+    }());
+
+}));
+/* vim: set sw=4 ts=4 et tw=80 : */
+/**
+ * @license Copyright (c) 2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*global define, Reflect */
+
+/*
+ * xpcshell has a smaller stack on linux and windows (1MB vs 9MB on mac),
+ * and the recursive nature of esprima can cause it to overflow pretty
+ * quickly. So favor it built in Reflect parser:
+ * https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API
+ */
+define('esprimaAdapter', ['./esprima', 'env'], function (esprima, env) {
+    if (env.get() === 'xpconnect' && typeof Reflect !== 'undefined') {
+        return Reflect;
+    } else {
+        return esprima;
+    }
+});
+define('uglifyjs/consolidator', ["require", "exports", "module", "./parse-js", "./process"], function(require, exports, module) {
+/**
+ * @preserve Copyright 2012 Robert Gust-Bardon <http://robert.gust-bardon.org/>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *     * Redistributions of source code must retain the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer.
+ *
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/**
+ * @fileoverview Enhances <a href="https://github.com/mishoo/UglifyJS/"
+ * >UglifyJS</a> with consolidation of null, Boolean, and String values.
+ * <p>Also known as aliasing, this feature has been deprecated in <a href=
+ * "http://closure-compiler.googlecode.com/">the Closure Compiler</a> since its
+ * initial release, where it is unavailable from the <abbr title=
+ * "command line interface">CLI</a>. The Closure Compiler allows one to log and
+ * influence this process. In contrast, this implementation does not introduce
+ * any variable declarations in global code and derives String values from
+ * identifier names used as property accessors.</p>
+ * <p>Consolidating literals may worsen the data compression ratio when an <a
+ * href="http://tools.ietf.org/html/rfc2616#section-3.5">encoding
+ * transformation</a> is applied. For instance, <a href=
+ * "http://code.jquery.com/jquery-1.7.1.js">jQuery 1.7.1</a> takes 248235 bytes.
+ * Building it with <a href="https://github.com/mishoo/UglifyJS/tarball/v1.2.5">
+ * UglifyJS v1.2.5</a> results in 93647 bytes (37.73% of the original) which are
+ * then compressed to 33154 bytes (13.36% of the original) using <a href=
+ * "http://linux.die.net/man/1/gzip">gzip(1)</a>. Building it with the same
+ * version of UglifyJS 1.2.5 patched with the implementation of consolidation
+ * results in 80784 bytes (a decrease of 12863 bytes, i.e. 13.74%, in comparison
+ * to the aforementioned 93647 bytes) which are then compressed to 34013 bytes
+ * (an increase of 859 bytes, i.e. 2.59%, in comparison to the aforementioned
+ * 33154 bytes).</p>
+ * <p>Written in <a href="http://es5.github.com/#x4.2.2">the strict variant</a>
+ * of <a href="http://es5.github.com/">ECMA-262 5.1 Edition</a>. Encoded in <a
+ * href="http://tools.ietf.org/html/rfc3629">UTF-8</a>. Follows <a href=
+ * "http://google-styleguide.googlecode.com/svn-history/r76/trunk/javascriptguide.xml"
+ * >Revision 2.28 of the Google JavaScript Style Guide</a> (except for the
+ * discouraged use of the {@code function} tag and the {@code namespace} tag).
+ * 100% typed for the <a href=
+ * "http://closure-compiler.googlecode.com/files/compiler-20120123.tar.gz"
+ * >Closure Compiler Version 1741</a>.</p>
+ * <p>Should you find this software useful, please consider <a href=
+ * "https://paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=JZLW72X8FD4WG"
+ * >a donation</a>.</p>
+ * @author follow.me@RGustBardon (Robert Gust-Bardon)
+ * @supported Tested with:
+ *     <ul>
+ *     <li><a href="http://nodejs.org/dist/v0.6.10/">Node v0.6.10</a>,</li>
+ *     <li><a href="https://github.com/mishoo/UglifyJS/tarball/v1.2.5">UglifyJS
+ *       v1.2.5</a>.</li>
+ *     </ul>
+ */
+
+/*global console:false, exports:true, module:false, require:false */
+/*jshint sub:true */
+/**
+ * Consolidates null, Boolean, and String values found inside an <abbr title=
+ * "abstract syntax tree">AST</abbr>.
+ * @param {!TSyntacticCodeUnit} oAbstractSyntaxTree An array-like object
+ *     representing an <abbr title="abstract syntax tree">AST</abbr>.
+ * @return {!TSyntacticCodeUnit} An array-like object representing an <abbr
+ *     title="abstract syntax tree">AST</abbr> with its null, Boolean, and
+ *     String values consolidated.
+ */
+// TODO(user) Consolidation of mathematical values found in numeric literals.
+// TODO(user) Unconsolidation.
+// TODO(user) Consolidation of ECMA-262 6th Edition programs.
+// TODO(user) Rewrite in ECMA-262 6th Edition.
+exports['ast_consolidate'] = function(oAbstractSyntaxTree) {
+  'use strict';
+  /*jshint bitwise:true, curly:true, eqeqeq:true, forin:true, immed:true,
+        latedef:true, newcap:true, noarge:true, noempty:true, nonew:true,
+        onevar:true, plusplus:true, regexp:true, undef:true, strict:true,
+        sub:false, trailing:true */
+
+  var _,
+      /**
+       * A record consisting of data about one or more source elements.
+       * @constructor
+       * @nosideeffects
+       */
+      TSourceElementsData = function() {
+        /**
+         * The category of the elements.
+         * @type {number}
+         * @see ESourceElementCategories
+         */
+        this.nCategory = ESourceElementCategories.N_OTHER;
+        /**
+         * The number of occurrences (within the elements) of each primitive
+         * value that could be consolidated.
+         * @type {!Array.<!Object.<string, number>>}
+         */
+        this.aCount = [];
+        this.aCount[EPrimaryExpressionCategories.N_IDENTIFIER_NAMES] = {};
+        this.aCount[EPrimaryExpressionCategories.N_STRING_LITERALS] = {};
+        this.aCount[EPrimaryExpressionCategories.N_NULL_AND_BOOLEAN_LITERALS] =
+            {};
+        /**
+         * Identifier names found within the elements.
+         * @type {!Array.<string>}
+         */
+        this.aIdentifiers = [];
+        /**
+         * Prefixed representation Strings of each primitive value that could be
+         * consolidated within the elements.
+         * @type {!Array.<string>}
+         */
+        this.aPrimitiveValues = [];
+      },
+      /**
+       * A record consisting of data about a primitive value that could be
+       * consolidated.
+       * @constructor
+       * @nosideeffects
+       */
+      TPrimitiveValue = function() {
+        /**
+         * The difference in the number of terminal symbols between the original
+         * source text and the one with the primitive value consolidated. If the
+         * difference is positive, the primitive value is considered worthwhile.
+         * @type {number}
+         */
+        this.nSaving = 0;
+        /**
+         * An identifier name of the variable that will be declared and assigned
+         * the primitive value if the primitive value is consolidated.
+         * @type {string}
+         */
+        this.sName = '';
+      },
+      /**
+       * A record consisting of data on what to consolidate within the range of
+       * source elements that is currently being considered.
+       * @constructor
+       * @nosideeffects
+       */
+      TSolution = function() {
+        /**
+         * An object whose keys are prefixed representation Strings of each
+         * primitive value that could be consolidated within the elements and
+         * whose values are corresponding data about those primitive values.
+         * @type {!Object.<string, {nSaving: number, sName: string}>}
+         * @see TPrimitiveValue
+         */
+        this.oPrimitiveValues = {};
+        /**
+         * The difference in the number of terminal symbols between the original
+         * source text and the one with all the worthwhile primitive values
+         * consolidated.
+         * @type {number}
+         * @see TPrimitiveValue#nSaving
+         */
+        this.nSavings = 0;
+      },
+      /**
+       * The processor of <abbr title="abstract syntax tree">AST</abbr>s found
+       * in UglifyJS.
+       * @namespace
+       * @type {!TProcessor}
+       */
+      oProcessor = (/** @type {!TProcessor} */ require('./process')),
+      /**
+       * A record consisting of a number of constants that represent the
+       * difference in the number of terminal symbols between a source text with
+       * a modified syntactic code unit and the original one.
+       * @namespace
+       * @type {!Object.<string, number>}
+       */
+      oWeights = {
+        /**
+         * The difference in the number of punctuators required by the bracket
+         * notation and the dot notation.
+         * <p><code>'[]'.length - '.'.length</code></p>
+         * @const
+         * @type {number}
+         */
+        N_PROPERTY_ACCESSOR: 1,
+        /**
+         * The number of punctuators required by a variable declaration with an
+         * initialiser.
+         * <p><code>':'.length + ';'.length</code></p>
+         * @const
+         * @type {number}
+         */
+        N_VARIABLE_DECLARATION: 2,
+        /**
+         * The number of terminal symbols required to introduce a variable
+         * statement (excluding its variable declaration list).
+         * <p><code>'var '.length</code></p>
+         * @const
+         * @type {number}
+         */
+        N_VARIABLE_STATEMENT_AFFIXATION: 4,
+        /**
+         * The number of terminal symbols needed to enclose source elements
+         * within a function call with no argument values to a function with an
+         * empty parameter list.
+         * <p><code>'(function(){}());'.length</code></p>
+         * @const
+         * @type {number}
+         */
+        N_CLOSURE: 17
+      },
+      /**
+       * Categories of primary expressions from which primitive values that
+       * could be consolidated are derivable.
+       * @namespace
+       * @enum {number}
+       */
+      EPrimaryExpressionCategories = {
+        /**
+         * Identifier names used as property accessors.
+         * @type {number}
+         */
+        N_IDENTIFIER_NAMES: 0,
+        /**
+         * String literals.
+         * @type {number}
+         */
+        N_STRING_LITERALS: 1,
+        /**
+         * Null and Boolean literals.
+         * @type {number}
+         */
+        N_NULL_AND_BOOLEAN_LITERALS: 2
+      },
+      /**
+       * Prefixes of primitive values that could be consolidated.
+       * The String values of the prefixes must have same number of characters.
+       * The prefixes must not be used in any properties defined in any version
+       * of <a href=
+       * "http://www.ecma-international.org/publications/standards/Ecma-262.htm"
+       * >ECMA-262</a>.
+       * @namespace
+       * @enum {string}
+       */
+      EValuePrefixes = {
+        /**
+         * Identifies String values.
+         * @type {string}
+         */
+        S_STRING: '#S',
+        /**
+         * Identifies null and Boolean values.
+         * @type {string}
+         */
+        S_SYMBOLIC: '#O'
+      },
+      /**
+       * Categories of source elements in terms of their appropriateness of
+       * having their primitive values consolidated.
+       * @namespace
+       * @enum {number}
+       */
+      ESourceElementCategories = {
+        /**
+         * Identifies a source element that includes the <a href=
+         * "http://es5.github.com/#x12.10">{@code with}</a> statement.
+         * @type {number}
+         */
+        N_WITH: 0,
+        /**
+         * Identifies a source element that includes the <a href=
+         * "http://es5.github.com/#x15.1.2.1">{@code eval}</a> identifier name.
+         * @type {number}
+         */
+        N_EVAL: 1,
+        /**
+         * Identifies a source element that must be excluded from the process
+         * unless its whole scope is examined.
+         * @type {number}
+         */
+        N_EXCLUDABLE: 2,
+        /**
+         * Identifies source elements not posing any problems.
+         * @type {number}
+         */
+        N_OTHER: 3
+      },
+      /**
+       * The list of literals (other than the String ones) whose primitive
+       * values can be consolidated.
+       * @const
+       * @type {!Array.<string>}
+       */
+      A_OTHER_SUBSTITUTABLE_LITERALS = [
+        'null',   // The null literal.
+        'false',  // The Boolean literal {@code false}.
+        'true'    // The Boolean literal {@code true}.
+      ];
+
+  (/**
+    * Consolidates all worthwhile primitive values in a syntactic code unit.
+    * @param {!TSyntacticCodeUnit} oSyntacticCodeUnit An array-like object
+    *     representing the branch of the abstract syntax tree representing the
+    *     syntactic code unit along with its scope.
+    * @see TPrimitiveValue#nSaving
+    */
+   function fExamineSyntacticCodeUnit(oSyntacticCodeUnit) {
+     var _,
+         /**
+          * Indicates whether the syntactic code unit represents global code.
+          * @type {boolean}
+          */
+         bIsGlobal = 'toplevel' === oSyntacticCodeUnit[0],
+         /**
+          * Indicates whether the whole scope is being examined.
+          * @type {boolean}
+          */
+         bIsWhollyExaminable = !bIsGlobal,
+         /**
+          * An array-like object representing source elements that constitute a
+          * syntactic code unit.
+          * @type {!TSyntacticCodeUnit}
+          */
+         oSourceElements,
+         /**
+          * A record consisting of data about the source element that is
+          * currently being examined.
+          * @type {!TSourceElementsData}
+          */
+         oSourceElementData,
+         /**
+          * The scope of the syntactic code unit.
+          * @type {!TScope}
+          */
+         oScope,
+         /**
+          * An instance of an object that allows the traversal of an <abbr
+          * title="abstract syntax tree">AST</abbr>.
+          * @type {!TWalker}
+          */
+         oWalker,
+         /**
+          * An object encompassing collections of functions used during the
+          * traversal of an <abbr title="abstract syntax tree">AST</abbr>.
+          * @namespace
+          * @type {!Object.<string, !Object.<string, function(...[*])>>}
+          */
+         oWalkers = {
+           /**
+            * A collection of functions used during the surveyance of source
+            * elements.
+            * @namespace
+            * @type {!Object.<string, function(...[*])>}
+            */
+           oSurveySourceElement: {
+             /**#nocode+*/  // JsDoc Toolkit 2.4.0 hides some of the keys.
+             /**
+              * Classifies the source element as excludable if it does not
+              * contain a {@code with} statement or the {@code eval} identifier
+              * name. Adds the identifier of the function and its formal
+              * parameters to the list of identifier names found.
+              * @param {string} sIdentifier The identifier of the function.
+              * @param {!Array.<string>} aFormalParameterList Formal parameters.
+              * @param {!TSyntacticCodeUnit} oFunctionBody Function code.
+              */
+             'defun': function(
+                 sIdentifier,
+                 aFormalParameterList,
+                 oFunctionBody) {
+               fClassifyAsExcludable();
+               fAddIdentifier(sIdentifier);
+               aFormalParameterList.forEach(fAddIdentifier);
+             },
+             /**
+              * Increments the count of the number of occurrences of the String
+              * value that is equivalent to the sequence of terminal symbols
+              * that constitute the encountered identifier name.
+              * @param {!TSyntacticCodeUnit} oExpression The nonterminal
+              *     MemberExpression.
+              * @param {string} sIdentifierName The identifier name used as the
+              *     property accessor.
+              * @return {!Array} The encountered branch of an <abbr title=
+              *     "abstract syntax tree">AST</abbr> with its nonterminal
+              *     MemberExpression traversed.
+              */
+             'dot': function(oExpression, sIdentifierName) {
+               fCountPrimaryExpression(
+                   EPrimaryExpressionCategories.N_IDENTIFIER_NAMES,
+                   EValuePrefixes.S_STRING + sIdentifierName);
+               return ['dot', oWalker.walk(oExpression), sIdentifierName];
+             },
+             /**
+              * Adds the optional identifier of the function and its formal
+              * parameters to the list of identifier names found.
+              * @param {?string} sIdentifier The optional identifier of the
+              *     function.
+              * @param {!Array.<string>} aFormalParameterList Formal parameters.
+              * @param {!TSyntacticCodeUnit} oFunctionBody Function code.
+              */
+             'function': function(
+                 sIdentifier,
+                 aFormalParameterList,
+                 oFunctionBody) {
+               if ('string' === typeof sIdentifier) {
+                 fAddIdentifier(sIdentifier);
+               }
+               aFormalParameterList.forEach(fAddIdentifier);
+             },
+             /**
+              * Either increments the count of the number of occurrences of the
+              * encountered null or Boolean value or classifies a source element
+              * as containing the {@code eval} identifier name.
+              * @param {string} sIdentifier The identifier encountered.
+              */
+             'name': function(sIdentifier) {
+               if (-1 !== A_OTHER_SUBSTITUTABLE_LITERALS.indexOf(sIdentifier)) {
+                 fCountPrimaryExpression(
+                     EPrimaryExpressionCategories.N_NULL_AND_BOOLEAN_LITERALS,
+                     EValuePrefixes.S_SYMBOLIC + sIdentifier);
+               } else {
+                 if ('eval' === sIdentifier) {
+                   oSourceElementData.nCategory =
+                       ESourceElementCategories.N_EVAL;
+                 }
+                 fAddIdentifier(sIdentifier);
+               }
+             },
+             /**
+              * Classifies the source element as excludable if it does not
+              * contain a {@code with} statement or the {@code eval} identifier
+              * name.
+              * @param {TSyntacticCodeUnit} oExpression The expression whose
+              *     value is to be returned.
+              */
+             'return': function(oExpression) {
+               fClassifyAsExcludable();
+             },
+             /**
+              * Increments the count of the number of occurrences of the
+              * encountered String value.
+              * @param {string} sStringValue The String value of the string
+              *     literal encountered.
+              */
+             'string': function(sStringValue) {
+               if (sStringValue.length > 0) {
+                 fCountPrimaryExpression(
+                     EPrimaryExpressionCategories.N_STRING_LITERALS,
+                     EValuePrefixes.S_STRING + sStringValue);
+               }
+             },
+             /**
+              * Adds the identifier reserved for an exception to the list of
+              * identifier names found.
+              * @param {!TSyntacticCodeUnit} oTry A block of code in which an
+              *     exception can occur.
+              * @param {Array} aCatch The identifier reserved for an exception
+              *     and a block of code to handle the exception.
+              * @param {TSyntacticCodeUnit} oFinally An optional block of code
+              *     to be evaluated regardless of whether an exception occurs.
+              */
+             'try': function(oTry, aCatch, oFinally) {
+               if (Array.isArray(aCatch)) {
+                 fAddIdentifier(aCatch[0]);
+               }
+             },
+             /**
+              * Classifies the source element as excludable if it does not
+              * contain a {@code with} statement or the {@code eval} identifier
+              * name. Adds the identifier of each declared variable to the list
+              * of identifier names found.
+              * @param {!Array.<!Array>} aVariableDeclarationList Variable
+              *     declarations.
+              */
+             'var': function(aVariableDeclarationList) {
+               fClassifyAsExcludable();
+               aVariableDeclarationList.forEach(fAddVariable);
+             },
+             /**
+              * Classifies a source element as containing the {@code with}
+              * statement.
+              * @param {!TSyntacticCodeUnit} oExpression An expression whose
+              *     value is to be converted to a value of type Object and
+              *     become the binding object of a new object environment
+              *     record of a new lexical environment in which the statement
+              *     is to be executed.
+              * @param {!TSyntacticCodeUnit} oStatement The statement to be
+              *     executed in the augmented lexical environment.
+              * @return {!Array} An empty array to stop the traversal.
+              */
+             'with': function(oExpression, oStatement) {
+               oSourceElementData.nCategory = ESourceElementCategories.N_WITH;
+               return [];
+             }
+             /**#nocode-*/  // JsDoc Toolkit 2.4.0 hides some of the keys.
+           },
+           /**
+            * A collection of functions used while looking for nested functions.
+            * @namespace
+            * @type {!Object.<string, function(...[*])>}
+            */
+           oExamineFunctions: {
+             /**#nocode+*/  // JsDoc Toolkit 2.4.0 hides some of the keys.
+             /**
+              * Orders an examination of a nested function declaration.
+              * @this {!TSyntacticCodeUnit} An array-like object representing
+              *     the branch of an <abbr title="abstract syntax tree"
+              *     >AST</abbr> representing the syntactic code unit along with
+              *     its scope.
+              * @return {!Array} An empty array to stop the traversal.
+              */
+             'defun': function() {
+               fExamineSyntacticCodeUnit(this);
+               return [];
+             },
+             /**
+              * Orders an examination of a nested function expression.
+              * @this {!TSyntacticCodeUnit} An array-like object representing
+              *     the branch of an <abbr title="abstract syntax tree"
+              *     >AST</abbr> representing the syntactic code unit along with
+              *     its scope.
+              * @return {!Array} An empty array to stop the traversal.
+              */
+             'function': function() {
+               fExamineSyntacticCodeUnit(this);
+               return [];
+             }
+             /**#nocode-*/  // JsDoc Toolkit 2.4.0 hides some of the keys.
+           }
+         },
+         /**
+          * Records containing data about source elements.
+          * @type {Array.<TSourceElementsData>}
+          */
+         aSourceElementsData = [],
+         /**
+          * The index (in the source text order) of the source element
+          * immediately following a <a href="http://es5.github.com/#x14.1"
+          * >Directive Prologue</a>.
+          * @type {number}
+          */
+         nAfterDirectivePrologue = 0,
+         /**
+          * The index (in the source text order) of the source element that is
+          * currently being considered.
+          * @type {number}
+          */
+         nPosition,
+         /**
+          * The index (in the source text order) of the source element that is
+          * the last element of the range of source elements that is currently
+          * being considered.
+          * @type {(undefined|number)}
+          */
+         nTo,
+         /**
+          * Initiates the traversal of a source element.
+          * @param {!TWalker} oWalker An instance of an object that allows the
+          *     traversal of an abstract syntax tree.
+          * @param {!TSyntacticCodeUnit} oSourceElement A source element from
+          *     which the traversal should commence.
+          * @return {function(): !TSyntacticCodeUnit} A function that is able to
+          *     initiate the traversal from a given source element.
+          */
+         cContext = function(oWalker, oSourceElement) {
+           /**
+            * @return {!TSyntacticCodeUnit} A function that is able to
+            *     initiate the traversal from a given source element.
+            */
+           var fLambda = function() {
+             return oWalker.walk(oSourceElement);
+           };
+
+           return fLambda;
+         },
+         /**
+          * Classifies the source element as excludable if it does not
+          * contain a {@code with} statement or the {@code eval} identifier
+          * name.
+          */
+         fClassifyAsExcludable = function() {
+           if (oSourceElementData.nCategory ===
+               ESourceElementCategories.N_OTHER) {
+             oSourceElementData.nCategory =
+                 ESourceElementCategories.N_EXCLUDABLE;
+           }
+         },
+         /**
+          * Adds an identifier to the list of identifier names found.
+          * @param {string} sIdentifier The identifier to be added.
+          */
+         fAddIdentifier = function(sIdentifier) {
+           if (-1 === oSourceElementData.aIdentifiers.indexOf(sIdentifier)) {
+             oSourceElementData.aIdentifiers.push(sIdentifier);
+           }
+         },
+         /**
+          * Adds the identifier of a variable to the list of identifier names
+          * found.
+          * @param {!Array} aVariableDeclaration A variable declaration.
+          */
+         fAddVariable = function(aVariableDeclaration) {
+           fAddIdentifier(/** @type {string} */ aVariableDeclaration[0]);
+         },
+         /**
+          * Increments the count of the number of occurrences of the prefixed
+          * String representation attributed to the primary expression.
+          * @param {number} nCategory The category of the primary expression.
+          * @param {string} sName The prefixed String representation attributed
+          *     to the primary expression.
+          */
+         fCountPrimaryExpression = function(nCategory, sName) {
+           if (!oSourceElementData.aCount[nCategory].hasOwnProperty(sName)) {
+             oSourceElementData.aCount[nCategory][sName] = 0;
+             if (-1 === oSourceElementData.aPrimitiveValues.indexOf(sName)) {
+               oSourceElementData.aPrimitiveValues.push(sName);
+             }
+           }
+           oSourceElementData.aCount[nCategory][sName] += 1;
+         },
+         /**
+          * Consolidates all worthwhile primitive values in a range of source
+          *     elements.
+          * @param {number} nFrom The index (in the source text order) of the
+          *     source element that is the first element of the range.
+          * @param {number} nTo The index (in the source text order) of the
+          *     source element that is the last element of the range.
+          * @param {boolean} bEnclose Indicates whether the range should be
+          *     enclosed within a function call with no argument values to a
+          *     function with an empty parameter list if any primitive values
+          *     are consolidated.
+          * @see TPrimitiveValue#nSaving
+          */
+         fExamineSourceElements = function(nFrom, nTo, bEnclose) {
+           var _,
+               /**
+                * The index of the last mangled name.
+                * @type {number}
+                */
+               nIndex = oScope.cname,
+               /**
+                * The index of the source element that is currently being
+                * considered.
+                * @type {number}
+                */
+               nPosition,
+               /**
+                * A collection of functions used during the consolidation of
+                * primitive values and identifier names used as property
+                * accessors.
+                * @namespace
+                * @type {!Object.<string, function(...[*])>}
+                */
+               oWalkersTransformers = {
+                 /**
+                  * If the String value that is equivalent to the sequence of
+                  * terminal symbols that constitute the encountered identifier
+                  * name is worthwhile, a syntactic conversion from the dot
+                  * notation to the bracket notation ensues with that sequence
+                  * being substituted by an identifier name to which the value
+                  * is assigned.
+                  * Applies to property accessors that use the dot notation.
+                  * @param {!TSyntacticCodeUnit} oExpression The nonterminal
+                  *     MemberExpression.
+                  * @param {string} sIdentifierName The identifier name used as
+                  *     the property accessor.
+                  * @return {!Array} A syntactic code unit that is equivalent to
+                  *     the one encountered.
+                  * @see TPrimitiveValue#nSaving
+                  */
+                 'dot': function(oExpression, sIdentifierName) {
+                   /**
+                    * The prefixed String value that is equivalent to the
+                    * sequence of terminal symbols that constitute the
+                    * encountered identifier name.
+                    * @type {string}
+                    */
+                   var sPrefixed = EValuePrefixes.S_STRING + sIdentifierName;
+
+                   return oSolutionBest.oPrimitiveValues.hasOwnProperty(
+                       sPrefixed) &&
+                       oSolutionBest.oPrimitiveValues[sPrefixed].nSaving > 0 ?
+                       ['sub',
+                        oWalker.walk(oExpression),
+                        ['name',
+                         oSolutionBest.oPrimitiveValues[sPrefixed].sName]] :
+                       ['dot', oWalker.walk(oExpression), sIdentifierName];
+                 },
+                 /**
+                  * If the encountered identifier is a null or Boolean literal
+                  * and its value is worthwhile, the identifier is substituted
+                  * by an identifier name to which that value is assigned.
+                  * Applies to identifier names.
+                  * @param {string} sIdentifier The identifier encountered.
+                  * @return {!Array} A syntactic code unit that is equivalent to
+                  *     the one encountered.
+                  * @see TPrimitiveValue#nSaving
+                  */
+                 'name': function(sIdentifier) {
+                   /**
+                    * The prefixed representation String of the identifier.
+                    * @type {string}
+                    */
+                   var sPrefixed = EValuePrefixes.S_SYMBOLIC + sIdentifier;
+
+                   return [
+                     'name',
+                     oSolutionBest.oPrimitiveValues.hasOwnProperty(sPrefixed) &&
+                     oSolutionBest.oPrimitiveValues[sPrefixed].nSaving > 0 ?
+                     oSolutionBest.oPrimitiveValues[sPrefixed].sName :
+                     sIdentifier
+                   ];
+                 },
+                 /**
+                  * If the encountered String value is worthwhile, it is
+                  * substituted by an identifier name to which that value is
+                  * assigned.
+                  * Applies to String values.
+                  * @param {string} sStringValue The String value of the string
+                  *     literal encountered.
+                  * @return {!Array} A syntactic code unit that is equivalent to
+                  *     the one encountered.
+                  * @see TPrimitiveValue#nSaving
+                  */
+                 'string': function(sStringValue) {
+                   /**
+                    * The prefixed representation String of the primitive value
+                    * of the literal.
+                    * @type {string}
+                    */
+                   var sPrefixed =
+                       EValuePrefixes.S_STRING + sStringValue;
+
+                   return oSolutionBest.oPrimitiveValues.hasOwnProperty(
+                       sPrefixed) &&
+                       oSolutionBest.oPrimitiveValues[sPrefixed].nSaving > 0 ?
+                       ['name',
+                        oSolutionBest.oPrimitiveValues[sPrefixed].sName] :
+                       ['string', sStringValue];
+                 }
+               },
+               /**
+                * Such data on what to consolidate within the range of source
+                * elements that is currently being considered that lead to the
+                * greatest known reduction of the number of the terminal symbols
+                * in comparison to the original source text.
+                * @type {!TSolution}
+                */
+               oSolutionBest = new TSolution(),
+               /**
+                * Data representing an ongoing attempt to find a better
+                * reduction of the number of the terminal symbols in comparison
+                * to the original source text than the best one that is
+                * currently known.
+                * @type {!TSolution}
+                * @see oSolutionBest
+                */
+               oSolutionCandidate = new TSolution(),
+               /**
+                * A record consisting of data about the range of source elements
+                * that is currently being examined.
+                * @type {!TSourceElementsData}
+                */
+               oSourceElementsData = new TSourceElementsData(),
+               /**
+                * Variable declarations for each primitive value that is to be
+                * consolidated within the elements.
+                * @type {!Array.<!Array>}
+                */
+               aVariableDeclarations = [],
+               /**
+                * Augments a list with a prefixed representation String.
+                * @param {!Array.<string>} aList A list that is to be augmented.
+                * @return {function(string)} A function that augments a list
+                *     with a prefixed representation String.
+                */
+               cAugmentList = function(aList) {
+                 /**
+                  * @param {string} sPrefixed Prefixed representation String of
+                  *     a primitive value that could be consolidated within the
+                  *     elements.
+                  */
+                 var fLambda = function(sPrefixed) {
+                   if (-1 === aList.indexOf(sPrefixed)) {
+                     aList.push(sPrefixed);
+                   }
+                 };
+
+                 return fLambda;
+               },
+               /**
+                * Adds the number of occurrences of a primitive value of a given
+                * category that could be consolidated in the source element with
+                * a given index to the count of occurrences of that primitive
+                * value within the range of source elements that is currently
+                * being considered.
+                * @param {number} nPosition The index (in the source text order)
+                *     of a source element.
+                * @param {number} nCategory The category of the primary
+                *     expression from which the primitive value is derived.
+                * @return {function(string)} A function that performs the
+                *     addition.
+                * @see cAddOccurrencesInCategory
+                */
+               cAddOccurrences = function(nPosition, nCategory) {
+                 /**
+                  * @param {string} sPrefixed The prefixed representation String
+                  *     of a primitive value.
+                  */
+                 var fLambda = function(sPrefixed) {
+                   if (!oSourceElementsData.aCount[nCategory].hasOwnProperty(
+                           sPrefixed)) {
+                     oSourceElementsData.aCount[nCategory][sPrefixed] = 0;
+                   }
+                   oSourceElementsData.aCount[nCategory][sPrefixed] +=
+                       aSourceElementsData[nPosition].aCount[nCategory][
+                           sPrefixed];
+                 };
+
+                 return fLambda;
+               },
+               /**
+                * Adds the number of occurrences of each primitive value of a
+                * given category that could be consolidated in the source
+                * element with a given index to the count of occurrences of that
+                * primitive values within the range of source elements that is
+                * currently being considered.
+                * @param {number} nPosition The index (in the source text order)
+                *     of a source element.
+                * @return {function(number)} A function that performs the
+                *     addition.
+                * @see fAddOccurrences
+                */
+               cAddOccurrencesInCategory = function(nPosition) {
+                 /**
+                  * @param {number} nCategory The category of the primary
+                  *     expression from which the primitive value is derived.
+                  */
+                 var fLambda = function(nCategory) {
+                   Object.keys(
+                       aSourceElementsData[nPosition].aCount[nCategory]
+                   ).forEach(cAddOccurrences(nPosition, nCategory));
+                 };
+
+                 return fLambda;
+               },
+               /**
+                * Adds the number of occurrences of each primitive value that
+                * could be consolidated in the source element with a given index
+                * to the count of occurrences of that primitive values within
+                * the range of source elements that is currently being
+                * considered.
+                * @param {number} nPosition The index (in the source text order)
+                *     of a source element.
+                */
+               fAddOccurrences = function(nPosition) {
+                 Object.keys(aSourceElementsData[nPosition].aCount).forEach(
+                     cAddOccurrencesInCategory(nPosition));
+               },
+               /**
+                * Creates a variable declaration for a primitive value if that
+                * primitive value is to be consolidated within the elements.
+                * @param {string} sPrefixed Prefixed representation String of a
+                *     primitive value that could be consolidated within the
+                *     elements.
+                * @see aVariableDeclarations
+                */
+               cAugmentVariableDeclarations = function(sPrefixed) {
+                 if (oSolutionBest.oPrimitiveValues[sPrefixed].nSaving > 0) {
+                   aVariableDeclarations.push([
+                     oSolutionBest.oPrimitiveValues[sPrefixed].sName,
+                     [0 === sPrefixed.indexOf(EValuePrefixes.S_SYMBOLIC) ?
+                      'name' : 'string',
+                      sPrefixed.substring(EValuePrefixes.S_SYMBOLIC.length)]
+                   ]);
+                 }
+               },
+               /**
+                * Sorts primitive values with regard to the difference in the
+                * number of terminal symbols between the original source text
+                * and the one with those primitive values consolidated.
+                * @param {string} sPrefixed0 The prefixed representation String
+                *     of the first of the two primitive values that are being
+                *     compared.
+                * @param {string} sPrefixed1 The prefixed representation String
+                *     of the second of the two primitive values that are being
+                *     compared.
+                * @return {number}
+                *     <dl>
+                *         <dt>-1</dt>
+                *         <dd>if the first primitive value must be placed before
+                *              the other one,</dd>
+                *         <dt>0</dt>
+                *         <dd>if the first primitive value may be placed before
+                *              the other one,</dd>
+                *         <dt>1</dt>
+                *         <dd>if the first primitive value must not be placed
+                *              before the other one.</dd>
+                *     </dl>
+                * @see TSolution.oPrimitiveValues
+                */
+               cSortPrimitiveValues = function(sPrefixed0, sPrefixed1) {
+                 /**
+                  * The difference between:
+                  * <ol>
+                  * <li>the difference in the number of terminal symbols
+                  *     between the original source text and the one with the
+                  *     first primitive value consolidated, and</li>
+                  * <li>the difference in the number of terminal symbols
+                  *     between the original source text and the one with the
+                  *     second primitive value consolidated.</li>
+                  * </ol>
+                  * @type {number}
+                  */
+                 var nDifference =
+                     oSolutionCandidate.oPrimitiveValues[sPrefixed0].nSaving -
+                     oSolutionCandidate.oPrimitiveValues[sPrefixed1].nSaving;
+
+                 return nDifference > 0 ? -1 : nDifference < 0 ? 1 : 0;
+               },
+               /**
+                * Assigns an identifier name to a primitive value and calculates
+                * whether instances of that primitive value are worth
+                * consolidating.
+                * @param {string} sPrefixed The prefixed representation String
+                *     of a primitive value that is being evaluated.
+                */
+               fEvaluatePrimitiveValue = function(sPrefixed) {
+                 var _,
+                     /**
+                      * The index of the last mangled name.
+                      * @type {number}
+                      */
+                     nIndex,
+                     /**
+                      * The representation String of the primitive value that is
+                      * being evaluated.
+                      * @type {string}
+                      */
+                     sName =
+                         sPrefixed.substring(EValuePrefixes.S_SYMBOLIC.length),
+                     /**
+                      * The number of source characters taken up by the
+                      * representation String of the primitive value that is
+                      * being evaluated.
+                      * @type {number}
+                      */
+                     nLengthOriginal = sName.length,
+                     /**
+                      * The number of source characters taken up by the
+                      * identifier name that could substitute the primitive
+                      * value that is being evaluated.
+                      * substituted.
+                      * @type {number}
+                      */
+                     nLengthSubstitution,
+                     /**
+                      * The number of source characters taken up by by the
+                      * representation String of the primitive value that is
+                      * being evaluated when it is represented by a string
+                      * literal.
+                      * @type {number}
+                      */
+                     nLengthString = oProcessor.make_string(sName).length;
+
+                 oSolutionCandidate.oPrimitiveValues[sPrefixed] =
+                     new TPrimitiveValue();
+                 do {  // Find an identifier unused in this or any nested scope.
+                   nIndex = oScope.cname;
+                   oSolutionCandidate.oPrimitiveValues[sPrefixed].sName =
+                       oScope.next_mangled();
+                 } while (-1 !== oSourceElementsData.aIdentifiers.indexOf(
+                     oSolutionCandidate.oPrimitiveValues[sPrefixed].sName));
+                 nLengthSubstitution = oSolutionCandidate.oPrimitiveValues[
+                     sPrefixed].sName.length;
+                 if (0 === sPrefixed.indexOf(EValuePrefixes.S_SYMBOLIC)) {
+                   // foo:null, or foo:null;
+                   oSolutionCandidate.oPrimitiveValues[sPrefixed].nSaving -=
+                       nLengthSubstitution + nLengthOriginal +
+                       oWeights.N_VARIABLE_DECLARATION;
+                   // null vs foo
+                   oSolutionCandidate.oPrimitiveValues[sPrefixed].nSaving +=
+                       oSourceElementsData.aCount[
+                           EPrimaryExpressionCategories.
+                               N_NULL_AND_BOOLEAN_LITERALS][sPrefixed] *
+                       (nLengthOriginal - nLengthSubstitution);
+                 } else {
+                   // foo:'fromCharCode';
+                   oSolutionCandidate.oPrimitiveValues[sPrefixed].nSaving -=
+                       nLengthSubstitution + nLengthString +
+                       oWeights.N_VARIABLE_DECLARATION;
+                   // .fromCharCode vs [foo]
+                   if (oSourceElementsData.aCount[
+                           EPrimaryExpressionCategories.N_IDENTIFIER_NAMES
+                       ].hasOwnProperty(sPrefixed)) {
+                     oSolutionCandidate.oPrimitiveValues[sPrefixed].nSaving +=
+                         oSourceElementsData.aCount[
+                             EPrimaryExpressionCategories.N_IDENTIFIER_NAMES
+                         ][sPrefixed] *
+                         (nLengthOriginal - nLengthSubstitution -
+                          oWeights.N_PROPERTY_ACCESSOR);
+                   }
+                   // 'fromCharCode' vs foo
+                   if (oSourceElementsData.aCount[
+                           EPrimaryExpressionCategories.N_STRING_LITERALS
+                       ].hasOwnProperty(sPrefixed)) {
+                     oSolutionCandidate.oPrimitiveValues[sPrefixed].nSaving +=
+                         oSourceElementsData.aCount[
+                             EPrimaryExpressionCategories.N_STRING_LITERALS
+                         ][sPrefixed] *
+                         (nLengthString - nLengthSubstitution);
+                   }
+                 }
+                 if (oSolutionCandidate.oPrimitiveValues[sPrefixed].nSaving >
+                     0) {
+                   oSolutionCandidate.nSavings +=
+                       oSolutionCandidate.oPrimitiveValues[sPrefixed].nSaving;
+                 } else {
+                   oScope.cname = nIndex; // Free the identifier name.
+                 }
+               },
+               /**
+                * Adds a variable declaration to an existing variable statement.
+                * @param {!Array} aVariableDeclaration A variable declaration
+                *     with an initialiser.
+                */
+               cAddVariableDeclaration = function(aVariableDeclaration) {
+                 (/** @type {!Array} */ oSourceElements[nFrom][1]).unshift(
+                     aVariableDeclaration);
+               };
+
+           if (nFrom > nTo) {
+             return;
+           }
+           // If the range is a closure, reuse the closure.
+           if (nFrom === nTo &&
+               'stat' === oSourceElements[nFrom][0] &&
+               'call' === oSourceElements[nFrom][1][0] &&
+               'function' === oSourceElements[nFrom][1][1][0]) {
+             fExamineSyntacticCodeUnit(oSourceElements[nFrom][1][1]);
+             return;
+           }
+           // Create a list of all derived primitive values within the range.
+           for (nPosition = nFrom; nPosition <= nTo; nPosition += 1) {
+             aSourceElementsData[nPosition].aPrimitiveValues.forEach(
+                 cAugmentList(oSourceElementsData.aPrimitiveValues));
+           }
+           if (0 === oSourceElementsData.aPrimitiveValues.length) {
+             return;
+           }
+           for (nPosition = nFrom; nPosition <= nTo; nPosition += 1) {
+             // Add the number of occurrences to the total count.
+             fAddOccurrences(nPosition);
+             // Add identifiers of this or any nested scope to the list.
+             aSourceElementsData[nPosition].aIdentifiers.forEach(
+                 cAugmentList(oSourceElementsData.aIdentifiers));
+           }
+           // Distribute identifier names among derived primitive values.
+           do {  // If there was any progress, find a better distribution.
+             oSolutionBest = oSolutionCandidate;
+             if (Object.keys(oSolutionCandidate.oPrimitiveValues).length > 0) {
+               // Sort primitive values descending by their worthwhileness.
+               oSourceElementsData.aPrimitiveValues.sort(cSortPrimitiveValues);
+             }
+             oSolutionCandidate = new TSolution();
+             oSourceElementsData.aPrimitiveValues.forEach(
+                 fEvaluatePrimitiveValue);
+             oScope.cname = nIndex;
+           } while (oSolutionCandidate.nSavings > oSolutionBest.nSavings);
+           // Take the necessity of adding a variable statement into account.
+           if ('var' !== oSourceElements[nFrom][0]) {
+             oSolutionBest.nSavings -= oWeights.N_VARIABLE_STATEMENT_AFFIXATION;
+           }
+           if (bEnclose) {
+             // Take the necessity of forming a closure into account.
+             oSolutionBest.nSavings -= oWeights.N_CLOSURE;
+           }
+           if (oSolutionBest.nSavings > 0) {
+             // Create variable declarations suitable for UglifyJS.
+             Object.keys(oSolutionBest.oPrimitiveValues).forEach(
+                 cAugmentVariableDeclarations);
+             // Rewrite expressions that contain worthwhile primitive values.
+             for (nPosition = nFrom; nPosition <= nTo; nPosition += 1) {
+               oWalker = oProcessor.ast_walker();
+               oSourceElements[nPosition] =
+                   oWalker.with_walkers(
+                       oWalkersTransformers,
+                       cContext(oWalker, oSourceElements[nPosition]));
+             }
+             if ('var' === oSourceElements[nFrom][0]) {  // Reuse the statement.
+               (/** @type {!Array.<!Array>} */ aVariableDeclarations.reverse(
+                   )).forEach(cAddVariableDeclaration);
+             } else {  // Add a variable statement.
+               Array.prototype.splice.call(
+                   oSourceElements,
+                   nFrom,
+                   0,
+                   ['var', aVariableDeclarations]);
+               nTo += 1;
+             }
+             if (bEnclose) {
+               // Add a closure.
+               Array.prototype.splice.call(
+                   oSourceElements,
+                   nFrom,
+                   0,
+                   ['stat', ['call', ['function', null, [], []], []]]);
+               // Copy source elements into the closure.
+               for (nPosition = nTo + 1; nPosition > nFrom; nPosition -= 1) {
+                 Array.prototype.unshift.call(
+                     oSourceElements[nFrom][1][1][3],
+                     oSourceElements[nPosition]);
+               }
+               // Remove source elements outside the closure.
+               Array.prototype.splice.call(
+                   oSourceElements,
+                   nFrom + 1,
+                   nTo - nFrom + 1);
+             }
+           }
+           if (bEnclose) {
+             // Restore the availability of identifier names.
+             oScope.cname = nIndex;
+           }
+         };
+
+     oSourceElements = (/** @type {!TSyntacticCodeUnit} */
+         oSyntacticCodeUnit[bIsGlobal ? 1 : 3]);
+     if (0 === oSourceElements.length) {
+       return;
+     }
+     oScope = bIsGlobal ? oSyntacticCodeUnit.scope : oSourceElements.scope;
+     // Skip a Directive Prologue.
+     while (nAfterDirectivePrologue < oSourceElements.length &&
+            'directive' === oSourceElements[nAfterDirectivePrologue][0]) {
+       nAfterDirectivePrologue += 1;
+       aSourceElementsData.push(null);
+     }
+     if (oSourceElements.length === nAfterDirectivePrologue) {
+       return;
+     }
+     for (nPosition = nAfterDirectivePrologue;
+          nPosition < oSourceElements.length;
+          nPosition += 1) {
+       oSourceElementData = new TSourceElementsData();
+       oWalker = oProcessor.ast_walker();
+       // Classify a source element.
+       // Find its derived primitive values and count their occurrences.
+       // Find all identifiers used (including nested scopes).
+       oWalker.with_walkers(
+           oWalkers.oSurveySourceElement,
+           cContext(oWalker, oSourceElements[nPosition]));
+       // Establish whether the scope is still wholly examinable.
+       bIsWhollyExaminable = bIsWhollyExaminable &&
+           ESourceElementCategories.N_WITH !== oSourceElementData.nCategory &&
+           ESourceElementCategories.N_EVAL !== oSourceElementData.nCategory;
+       aSourceElementsData.push(oSourceElementData);
+     }
+     if (bIsWhollyExaminable) {  // Examine the whole scope.
+       fExamineSourceElements(
+           nAfterDirectivePrologue,
+           oSourceElements.length - 1,
+           false);
+     } else {  // Examine unexcluded ranges of source elements.
+       for (nPosition = oSourceElements.length - 1;
+            nPosition >= nAfterDirectivePrologue;
+            nPosition -= 1) {
+         oSourceElementData = (/** @type {!TSourceElementsData} */
+             aSourceElementsData[nPosition]);
+         if (ESourceElementCategories.N_OTHER ===
+             oSourceElementData.nCategory) {
+           if ('undefined' === typeof nTo) {
+             nTo = nPosition;  // Indicate the end of a range.
+           }
+           // Examine the range if it immediately follows a Directive Prologue.
+           if (nPosition === nAfterDirectivePrologue) {
+             fExamineSourceElements(nPosition, nTo, true);
+           }
+         } else {
+           if ('undefined' !== typeof nTo) {
+             // Examine the range that immediately follows this source element.
+             fExamineSourceElements(nPosition + 1, nTo, true);
+             nTo = void 0;  // Obliterate the range.
+           }
+           // Examine nested functions.
+           oWalker = oProcessor.ast_walker();
+           oWalker.with_walkers(
+               oWalkers.oExamineFunctions,
+               cContext(oWalker, oSourceElements[nPosition]));
+         }
+       }
+     }
+   }(oAbstractSyntaxTree = oProcessor.ast_add_scope(oAbstractSyntaxTree)));
+  return oAbstractSyntaxTree;
+};
+/*jshint sub:false */
+
+/* Local Variables:      */
+/* mode: js              */
+/* coding: utf-8         */
+/* indent-tabs-mode: nil */
+/* tab-width: 2          */
+/* End:                  */
+/* vim: set ft=javascript fenc=utf-8 et ts=2 sts=2 sw=2: */
+/* :mode=javascript:noTabs=true:tabSize=2:indentSize=2:deepIndent=true: */
+});
+define('uglifyjs/parse-js', ["exports"], function(exports) {
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+
+  This version is suitable for Node.js.  With minimal changes (the
+  exports stuff) it should work on any JS platform.
+
+  This file contains the tokenizer/parser.  It is a port to JavaScript
+  of parse-js [1], a JavaScript parser library written in Common Lisp
+  by Marijn Haverbeke.  Thank you Marijn!
+
+  [1] http://marijn.haverbeke.nl/parse-js/
+
+  Exported functions:
+
+    - tokenizer(code) -- returns a function.  Call the returned
+      function to fetch the next token.
+
+    - parse(code) -- returns an AST of the given JavaScript code.
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2010 (c) Mihai Bazon <mihai.bazon@gmail.com>
+    Based on parse-js (http://marijn.haverbeke.nl/parse-js/).
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+/* -----[ Tokenizer (constants) ]----- */
+
+var KEYWORDS = array_to_hash([
+    "break",
+    "case",
+    "catch",
+    "const",
+    "continue",
+    "debugger",
+    "default",
+    "delete",
+    "do",
+    "else",
+    "finally",
+    "for",
+    "function",
+    "if",
+    "in",
+    "instanceof",
+    "new",
+    "return",
+    "switch",
+    "throw",
+    "try",
+    "typeof",
+    "var",
+    "void",
+    "while",
+    "with"
+]);
+
+var RESERVED_WORDS = array_to_hash([
+    "abstract",
+    "boolean",
+    "byte",
+    "char",
+    "class",
+    "double",
+    "enum",
+    "export",
+    "extends",
+    "final",
+    "float",
+    "goto",
+    "implements",
+    "import",
+    "int",
+    "interface",
+    "long",
+    "native",
+    "package",
+    "private",
+    "protected",
+    "public",
+    "short",
+    "static",
+    "super",
+    "synchronized",
+    "throws",
+    "transient",
+    "volatile"
+]);
+
+var KEYWORDS_BEFORE_EXPRESSION = array_to_hash([
+    "return",
+    "new",
+    "delete",
+    "throw",
+    "else",
+    "case"
+]);
+
+var KEYWORDS_ATOM = array_to_hash([
+    "false",
+    "null",
+    "true",
+    "undefined"
+]);
+
+var OPERATOR_CHARS = array_to_hash(characters("+-*&%=<>!?|~^"));
+
+var RE_HEX_NUMBER = /^0x[0-9a-f]+$/i;
+var RE_OCT_NUMBER = /^0[0-7]+$/;
+var RE_DEC_NUMBER = /^\d*\.?\d*(?:e[+-]?\d*(?:\d\.?|\.?\d)\d*)?$/i;
+
+var OPERATORS = array_to_hash([
+    "in",
+    "instanceof",
+    "typeof",
+    "new",
+    "void",
+    "delete",
+    "++",
+    "--",
+    "+",
+    "-",
+    "!",
+    "~",
+    "&",
+    "|",
+    "^",
+    "*",
+    "/",
+    "%",
+    ">>",
+    "<<",
+    ">>>",
+    "<",
+    ">",
+    "<=",
+    ">=",
+    "==",
+    "===",
+    "!=",
+    "!==",
+    "?",
+    "=",
+    "+=",
+    "-=",
+    "/=",
+    "*=",
+    "%=",
+    ">>=",
+    "<<=",
+    ">>>=",
+    "|=",
+    "^=",
+    "&=",
+    "&&",
+    "||"
+]);
+
+var WHITESPACE_CHARS = array_to_hash(characters(" \u00a0\n\r\t\f\u000b\u200b\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\uFEFF"));
+
+var PUNC_BEFORE_EXPRESSION = array_to_hash(characters("[{(,.;:"));
+
+var PUNC_CHARS = array_to_hash(characters("[]{}(),;:"));
+
+var REGEXP_MODIFIERS = array_to_hash(characters("gmsiy"));
+
+/* -----[ Tokenizer ]----- */
+
+var UNICODE = {  // Unicode 6.1
+    letter: new RegExp("[\\u0041-\\u005A\\u0061-\\u007A\\u00AA\\u00B5\\u00BA\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02C1\\u02C6-\\u02D1\\u02E0-\\u02E4\\u02EC\\u02EE\\u0370-\\u0374\\u0376\\u0377\\u037A-\\u037D\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03F5\\u03F7-\\u0481\\u048A-\\u0527\\u0531-\\u0556\\u0559\\u0561-\\u0587\\u05D0-\\u05EA\\u05F0-\\u05F2\\u0620-\\u064A\\u066E\\u066F\\u0671-\\u06D3\\u06D5\\u06E5\\u06E6\\u06EE\\u06EF\\u06FA-\\u06FC\\u06FF\\u0710\\u0712-\\u072F\\u074D-\\u07A5\\u07B1\\u07CA-\\u07EA\\u07F4\\u07F5\\u07FA\\u0800-\\u0815\\u081A\\u0824\\u0828\\u0840-\\u0858\\u08A0\\u08A2-\\u08AC\\u0904-\\u0939\\u093D\\u0950\\u0958-\\u0961\\u0971-\\u0977\\u0979-\\u097F\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09BD\\u09CE\\u09DC\\u09DD\\u09DF-\\u09E1\\u09F0\\u09F1\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A72-\\u0A74\\u0A85-\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AD0\\u0AE0\\u0AE1\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B35-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B71\\u0B83\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB9\\u0BD0\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C33\\u0C35-\\u0C39\\u0C3D\\u0C58\\u0C59\\u0C60\\u0C61\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBD\\u0CDE\\u0CE0\\u0CE1\\u0CF1\\u0CF2\\u0D05-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D3A\\u0D3D\\u0D4E\\u0D60\\u0D61\\u0D7A-\\u0D7F\\u0D85-\\u0D96\\u0D9A-\\u0DB1\\u0DB3-\\u0DBB\\u0DBD\\u0DC0-\\u0DC6\\u0E01-\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E46\\u0E81\\u0E82\\u0E84\\u0E87\\u0E88\\u0E8A\\u0E8D\\u0E94-\\u0E97\\u0E99-\\u0E9F\\u0EA1-\\u0EA3\\u0EA5\\u0EA7\\u0EAA\\u0EAB\\u0EAD-\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0EC6\\u0EDC-\\u0EDF\\u0F00\\u0F40-\\u0F47\\u0F49-\\u0F6C\\u0F88-\\u0F8C\\u1000-\\u102A\\u103F\\u1050-\\u1055\\u105A-\\u105D\\u1061\\u1065\\u1066\\u106E-\\u1070\\u1075-\\u1081\\u108E\\u10A0-\\u10C5\\u10C7\\u10CD\\u10D0-\\u10FA\\u10FC-\\u1248\\u124A-\\u124D\\u1250-\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288\\u128A-\\u128D\\u1290-\\u12B0\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-\\u12C5\\u12C8-\\u12D6\\u12D8-\\u1310\\u1312-\\u1315\\u1318-\\u135A\\u1380-\\u138F\\u13A0-\\u13F4\\u1401-\\u166C\\u166F-\\u167F\\u1681-\\u169A\\u16A0-\\u16EA\\u16EE-\\u16F0\\u1700-\\u170C\\u170E-\\u1711\\u1720-\\u1731\\u1740-\\u1751\\u1760-\\u176C\\u176E-\\u1770\\u1780-\\u17B3\\u17D7\\u17DC\\u1820-\\u1877\\u1880-\\u18A8\\u18AA\\u18B0-\\u18F5\\u1900-\\u191C\\u1950-\\u196D\\u1970-\\u1974\\u1980-\\u19AB\\u19C1-\\u19C7\\u1A00-\\u1A16\\u1A20-\\u1A54\\u1AA7\\u1B05-\\u1B33\\u1B45-\\u1B4B\\u1B83-\\u1BA0\\u1BAE\\u1BAF\\u1BBA-\\u1BE5\\u1C00-\\u1C23\\u1C4D-\\u1C4F\\u1C5A-\\u1C7D\\u1CE9-\\u1CEC\\u1CEE-\\u1CF1\\u1CF5\\u1CF6\\u1D00-\\u1DBF\\u1E00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2071\\u207F\\u2090-\\u209C\\u2102\\u2107\\u210A-\\u2113\\u2115\\u2119-\\u211D\\u2124\\u2126\\u2128\\u212A-\\u212D\\u212F-\\u2139\\u213C-\\u213F\\u2145-\\u2149\\u214E\\u2160-\\u2188\\u2C00-\\u2C2E\\u2C30-\\u2C5E\\u2C60-\\u2CE4\\u2CEB-\\u2CEE\\u2CF2\\u2CF3\\u2D00-\\u2D25\\u2D27\\u2D2D\\u2D30-\\u2D67\\u2D6F\\u2D80-\\u2D96\\u2DA0-\\u2DA6\\u2DA8-\\u2DAE\\u2DB0-\\u2DB6\\u2DB8-\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6\\u2DD8-\\u2DDE\\u2E2F\\u3005-\\u3007\\u3021-\\u3029\\u3031-\\u3035\\u3038-\\u303C\\u3041-\\u3096\\u309D-\\u309F\\u30A1-\\u30FA\\u30FC-\\u30FF\\u3105-\\u312D\\u3131-\\u318E\\u31A0-\\u31BA\\u31F0-\\u31FF\\u3400-\\u4DB5\\u4E00-\\u9FCC\\uA000-\\uA48C\\uA4D0-\\uA4FD\\uA500-\\uA60C\\uA610-\\uA61F\\uA62A\\uA62B\\uA640-\\uA66E\\uA67F-\\uA697\\uA6A0-\\uA6EF\\uA717-\\uA71F\\uA722-\\uA788\\uA78B-\\uA78E\\uA790-\\uA793\\uA7A0-\\uA7AA\\uA7F8-\\uA801\\uA803-\\uA805\\uA807-\\uA80A\\uA80C-\\uA822\\uA840-\\uA873\\uA882-\\uA8B3\\uA8F2-\\uA8F7\\uA8FB\\uA90A-\\uA925\\uA930-\\uA946\\uA960-\\uA97C\\uA984-\\uA9B2\\uA9CF\\uAA00-\\uAA28\\uAA40-\\uAA42\\uAA44-\\uAA4B\\uAA60-\\uAA76\\uAA7A\\uAA80-\\uAAAF\\uAAB1\\uAAB5\\uAAB6\\uAAB9-\\uAABD\\uAAC0\\uAAC2\\uAADB-\\uAADD\\uAAE0-\\uAAEA\\uAAF2-\\uAAF4\\uAB01-\\uAB06\\uAB09-\\uAB0E\\uAB11-\\uAB16\\uAB20-\\uAB26\\uAB28-\\uAB2E\\uABC0-\\uABE2\\uAC00-\\uD7A3\\uD7B0-\\uD7C6\\uD7CB-\\uD7FB\\uF900-\\uFA6D\\uFA70-\\uFAD9\\uFB00-\\uFB06\\uFB13-\\uFB17\\uFB1D\\uFB1F-\\uFB28\\uFB2A-\\uFB36\\uFB38-\\uFB3C\\uFB3E\\uFB40\\uFB41\\uFB43\\uFB44\\uFB46-\\uFBB1\\uFBD3-\\uFD3D\\uFD50-\\uFD8F\\uFD92-\\uFDC7\\uFDF0-\\uFDFB\\uFE70-\\uFE74\\uFE76-\\uFEFC\\uFF21-\\uFF3A\\uFF41-\\uFF5A\\uFF66-\\uFFBE\\uFFC2-\\uFFC7\\uFFCA-\\uFFCF\\uFFD2-\\uFFD7\\uFFDA-\\uFFDC]"),
+    combining_mark: new RegExp("[\\u0300-\\u036F\\u0483-\\u0487\\u0591-\\u05BD\\u05BF\\u05C1\\u05C2\\u05C4\\u05C5\\u05C7\\u0610-\\u061A\\u064B-\\u065F\\u0670\\u06D6-\\u06DC\\u06DF-\\u06E4\\u06E7\\u06E8\\u06EA-\\u06ED\\u0711\\u0730-\\u074A\\u07A6-\\u07B0\\u07EB-\\u07F3\\u0816-\\u0819\\u081B-\\u0823\\u0825-\\u0827\\u0829-\\u082D\\u0859-\\u085B\\u08E4-\\u08FE\\u0900-\\u0903\\u093A-\\u093C\\u093E-\\u094F\\u0951-\\u0957\\u0962\\u0963\\u0981-\\u0983\\u09BC\\u09BE-\\u09C4\\u09C7\\u09C8\\u09CB-\\u09CD\\u09D7\\u09E2\\u09E3\\u0A01-\\u0A03\\u0A3C\\u0A3E-\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A51\\u0A70\\u0A71\\u0A75\\u0A81-\\u0A83\\u0ABC\\u0ABE-\\u0AC5\\u0AC7-\\u0AC9\\u0ACB-\\u0ACD\\u0AE2\\u0AE3\\u0B01-\\u0B03\\u0B3C\\u0B3E-\\u0B44\\u0B47\\u0B48\\u0B4B-\\u0B4D\\u0B56\\u0B57\\u0B62\\u0B63\\u0B82\\u0BBE-\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCD\\u0BD7\\u0C01-\\u0C03\\u0C3E-\\u0C44\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C62\\u0C63\\u0C82\\u0C83\\u0CBC\\u0CBE-\\u0CC4\\u0CC6-\\u0CC8\\u0CCA-\\u0CCD\\u0CD5\\u0CD6\\u0CE2\\u0CE3\\u0D02\\u0D03\\u0D3E-\\u0D44\\u0D46-\\u0D48\\u0D4A-\\u0D4D\\u0D57\\u0D62\\u0D63\\u0D82\\u0D83\\u0DCA\\u0DCF-\\u0DD4\\u0DD6\\u0DD8-\\u0DDF\\u0DF2\\u0DF3\\u0E31\\u0E34-\\u0E3A\\u0E47-\\u0E4E\\u0EB1\\u0EB4-\\u0EB9\\u0EBB\\u0EBC\\u0EC8-\\u0ECD\\u0F18\\u0F19\\u0F35\\u0F37\\u0F39\\u0F3E\\u0F3F\\u0F71-\\u0F84\\u0F86\\u0F87\\u0F8D-\\u0F97\\u0F99-\\u0FBC\\u0FC6\\u102B-\\u103E\\u1056-\\u1059\\u105E-\\u1060\\u1062-\\u1064\\u1067-\\u106D\\u1071-\\u1074\\u1082-\\u108D\\u108F\\u109A-\\u109D\\u135D-\\u135F\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17B4-\\u17D3\\u17DD\\u180B-\\u180D\\u18A9\\u1920-\\u192B\\u1930-\\u193B\\u19B0-\\u19C0\\u19C8\\u19C9\\u1A17-\\u1A1B\\u1A55-\\u1A5E\\u1A60-\\u1A7C\\u1A7F\\u1B00-\\u1B04\\u1B34-\\u1B44\\u1B6B-\\u1B73\\u1B80-\\u1B82\\u1BA1-\\u1BAD\\u1BE6-\\u1BF3\\u1C24-\\u1C37\\u1CD0-\\u1CD2\\u1CD4-\\u1CE8\\u1CED\\u1CF2-\\u1CF4\\u1DC0-\\u1DE6\\u1DFC-\\u1DFF\\u20D0-\\u20DC\\u20E1\\u20E5-\\u20F0\\u2CEF-\\u2CF1\\u2D7F\\u2DE0-\\u2DFF\\u302A-\\u302F\\u3099\\u309A\\uA66F\\uA674-\\uA67D\\uA69F\\uA6F0\\uA6F1\\uA802\\uA806\\uA80B\\uA823-\\uA827\\uA880\\uA881\\uA8B4-\\uA8C4\\uA8E0-\\uA8F1\\uA926-\\uA92D\\uA947-\\uA953\\uA980-\\uA983\\uA9B3-\\uA9C0\\uAA29-\\uAA36\\uAA43\\uAA4C\\uAA4D\\uAA7B\\uAAB0\\uAAB2-\\uAAB4\\uAAB7\\uAAB8\\uAABE\\uAABF\\uAAC1\\uAAEB-\\uAAEF\\uAAF5\\uAAF6\\uABE3-\\uABEA\\uABEC\\uABED\\uFB1E\\uFE00-\\uFE0F\\uFE20-\\uFE26]"),
+    connector_punctuation: new RegExp("[\\u005F\\u203F\\u2040\\u2054\\uFE33\\uFE34\\uFE4D-\\uFE4F\\uFF3F]"),
+    digit: new RegExp("[\\u0030-\\u0039\\u0660-\\u0669\\u06F0-\\u06F9\\u07C0-\\u07C9\\u0966-\\u096F\\u09E6-\\u09EF\\u0A66-\\u0A6F\\u0AE6-\\u0AEF\\u0B66-\\u0B6F\\u0BE6-\\u0BEF\\u0C66-\\u0C6F\\u0CE6-\\u0CEF\\u0D66-\\u0D6F\\u0E50-\\u0E59\\u0ED0-\\u0ED9\\u0F20-\\u0F29\\u1040-\\u1049\\u1090-\\u1099\\u17E0-\\u17E9\\u1810-\\u1819\\u1946-\\u194F\\u19D0-\\u19D9\\u1A80-\\u1A89\\u1A90-\\u1A99\\u1B50-\\u1B59\\u1BB0-\\u1BB9\\u1C40-\\u1C49\\u1C50-\\u1C59\\uA620-\\uA629\\uA8D0-\\uA8D9\\uA900-\\uA909\\uA9D0-\\uA9D9\\uAA50-\\uAA59\\uABF0-\\uABF9\\uFF10-\\uFF19]")
+};
+
+function is_letter(ch) {
+    return UNICODE.letter.test(ch);
+};
+
+function is_digit(ch) {
+    ch = ch.charCodeAt(0);
+    return ch >= 48 && ch <= 57;
+};
+
+function is_unicode_digit(ch) {
+    return UNICODE.digit.test(ch);
+}
+
+function is_alphanumeric_char(ch) {
+    return is_digit(ch) || is_letter(ch);
+};
+
+function is_unicode_combining_mark(ch) {
+    return UNICODE.combining_mark.test(ch);
+};
+
+function is_unicode_connector_punctuation(ch) {
+    return UNICODE.connector_punctuation.test(ch);
+};
+
+function is_identifier_start(ch) {
+    return ch == "$" || ch == "_" || is_letter(ch);
+};
+
+function is_identifier_char(ch) {
+    return is_identifier_start(ch)
+        || is_unicode_combining_mark(ch)
+        || is_unicode_digit(ch)
+        || is_unicode_connector_punctuation(ch)
+        || ch == "\u200c" // zero-width non-joiner <ZWNJ>
+        || ch == "\u200d" // zero-width joiner <ZWJ> (in my ECMA-262 PDF, this is also 200c)
+    ;
+};
+
+function parse_js_number(num) {
+    if (RE_HEX_NUMBER.test(num)) {
+        return parseInt(num.substr(2), 16);
+    } else if (RE_OCT_NUMBER.test(num)) {
+        return parseInt(num.substr(1), 8);
+    } else if (RE_DEC_NUMBER.test(num)) {
+        return parseFloat(num);
+    }
+};
+
+function JS_Parse_Error(message, line, col, pos) {
+    this.message = message;
+    this.line = line + 1;
+    this.col = col + 1;
+    this.pos = pos + 1;
+    this.stack = new Error().stack;
+};
+
+JS_Parse_Error.prototype.toString = function() {
+    return this.message + " (line: " + this.line + ", col: " + this.col + ", pos: " + this.pos + ")" + "\n\n" + this.stack;
+};
+
+function js_error(message, line, col, pos) {
+    throw new JS_Parse_Error(message, line, col, pos);
+};
+
+function is_token(token, type, val) {
+    return token.type == type && (val == null || token.value == val);
+};
+
+var EX_EOF = {};
+
+function tokenizer($TEXT) {
+
+    var S = {
+        text            : $TEXT.replace(/\r\n?|[\n\u2028\u2029]/g, "\n").replace(/^\uFEFF/, ''),
+        pos             : 0,
+        tokpos          : 0,
+        line            : 0,
+        tokline         : 0,
+        col             : 0,
+        tokcol          : 0,
+        newline_before  : false,
+        regex_allowed   : false,
+        comments_before : []
+    };
+
+    function peek() { return S.text.charAt(S.pos); };
+
+    function next(signal_eof, in_string) {
+        var ch = S.text.charAt(S.pos++);
+        if (signal_eof && !ch)
+            throw EX_EOF;
+        if (ch == "\n") {
+            S.newline_before = S.newline_before || !in_string;
+            ++S.line;
+            S.col = 0;
+        } else {
+            ++S.col;
+        }
+        return ch;
+    };
+
+    function eof() {
+        return !S.peek();
+    };
+
+    function find(what, signal_eof) {
+        var pos = S.text.indexOf(what, S.pos);
+        if (signal_eof && pos == -1) throw EX_EOF;
+        return pos;
+    };
+
+    function start_token() {
+        S.tokline = S.line;
+        S.tokcol = S.col;
+        S.tokpos = S.pos;
+    };
+
+    function token(type, value, is_comment) {
+        S.regex_allowed = ((type == "operator" && !HOP(UNARY_POSTFIX, value)) ||
+                           (type == "keyword" && HOP(KEYWORDS_BEFORE_EXPRESSION, value)) ||
+                           (type == "punc" && HOP(PUNC_BEFORE_EXPRESSION, value)));
+        var ret = {
+            type   : type,
+            value  : value,
+            line   : S.tokline,
+            col    : S.tokcol,
+            pos    : S.tokpos,
+            endpos : S.pos,
+            nlb    : S.newline_before
+        };
+        if (!is_comment) {
+            ret.comments_before = S.comments_before;
+            S.comments_before = [];
+            // make note of any newlines in the comments that came before
+            for (var i = 0, len = ret.comments_before.length; i < len; i++) {
+                ret.nlb = ret.nlb || ret.comments_before[i].nlb;
+            }
+        }
+        S.newline_before = false;
+        return ret;
+    };
+
+    function skip_whitespace() {
+        while (HOP(WHITESPACE_CHARS, peek()))
+            next();
+    };
+
+    function read_while(pred) {
+        var ret = "", ch = peek(), i = 0;
+        while (ch && pred(ch, i++)) {
+            ret += next();
+            ch = peek();
+        }
+        return ret;
+    };
+
+    function parse_error(err) {
+        js_error(err, S.tokline, S.tokcol, S.tokpos);
+    };
+
+    function read_num(prefix) {
+        var has_e = false, after_e = false, has_x = false, has_dot = prefix == ".";
+        var num = read_while(function(ch, i){
+            if (ch == "x" || ch == "X") {
+                if (has_x) return false;
+                return has_x = true;
+            }
+            if (!has_x && (ch == "E" || ch == "e")) {
+                if (has_e) return false;
+                return has_e = after_e = true;
+            }
+            if (ch == "-") {
+                if (after_e || (i == 0 && !prefix)) return true;
+                return false;
+            }
+            if (ch == "+") return after_e;
+            after_e = false;
+            if (ch == ".") {
+                if (!has_dot && !has_x && !has_e)
+                    return has_dot = true;
+                return false;
+            }
+            return is_alphanumeric_char(ch);
+        });
+        if (prefix)
+            num = prefix + num;
+        var valid = parse_js_number(num);
+        if (!isNaN(valid)) {
+            return token("num", valid);
+        } else {
+            parse_error("Invalid syntax: " + num);
+        }
+    };
+
+    function read_escaped_char(in_string) {
+        var ch = next(true, in_string);
+        switch (ch) {
+          case "n" : return "\n";
+          case "r" : return "\r";
+          case "t" : return "\t";
+          case "b" : return "\b";
+          case "v" : return "\u000b";
+          case "f" : return "\f";
+          case "0" : return "\0";
+          case "x" : return String.fromCharCode(hex_bytes(2));
+          case "u" : return String.fromCharCode(hex_bytes(4));
+          case "\n": return "";
+          default  : return ch;
+        }
+    };
+
+    function hex_bytes(n) {
+        var num = 0;
+        for (; n > 0; --n) {
+            var digit = parseInt(next(true), 16);
+            if (isNaN(digit))
+                parse_error("Invalid hex-character pattern in string");
+            num = (num << 4) | digit;
+        }
+        return num;
+    };
+
+    function read_string() {
+        return with_eof_error("Unterminated string constant", function(){
+            var quote = next(), ret = "";
+            for (;;) {
+                var ch = next(true);
+                if (ch == "\\") {
+                    // read OctalEscapeSequence (XXX: deprecated if "strict mode")
+                    // https://github.com/mishoo/UglifyJS/issues/178
+                    var octal_len = 0, first = null;
+                    ch = read_while(function(ch){
+                        if (ch >= "0" && ch <= "7") {
+                            if (!first) {
+                                first = ch;
+                                return ++octal_len;
+                            }
+                            else if (first <= "3" && octal_len <= 2) return ++octal_len;
+                            else if (first >= "4" && octal_len <= 1) return ++octal_len;
+                        }
+                        return false;
+                    });
+                    if (octal_len > 0) ch = String.fromCharCode(parseInt(ch, 8));
+                    else ch = read_escaped_char(true);
+                }
+                else if (ch == quote) break;
+                else if (ch == "\n") throw EX_EOF;
+                ret += ch;
+            }
+            return token("string", ret);
+        });
+    };
+
+    function read_line_comment() {
+        next();
+        var i = find("\n"), ret;
+        if (i == -1) {
+            ret = S.text.substr(S.pos);
+            S.pos = S.text.length;
+        } else {
+            ret = S.text.substring(S.pos, i);
+            S.pos = i;
+        }
+        return token("comment1", ret, true);
+    };
+
+    function read_multiline_comment() {
+        next();
+        return with_eof_error("Unterminated multiline comment", function(){
+            var i = find("*/", true),
+            text = S.text.substring(S.pos, i);
+            S.pos = i + 2;
+            S.line += text.split("\n").length - 1;
+            S.newline_before = S.newline_before || text.indexOf("\n") >= 0;
+
+            // https://github.com/mishoo/UglifyJS/issues/#issue/100
+            if (/^@cc_on/i.test(text)) {
+                warn("WARNING: at line " + S.line);
+                warn("*** Found \"conditional comment\": " + text);
+                warn("*** UglifyJS DISCARDS ALL COMMENTS.  This means your code might no longer work properly in Internet Explorer.");
+            }
+
+            return token("comment2", text, true);
+        });
+    };
+
+    function read_name() {
+        var backslash = false, name = "", ch, escaped = false, hex;
+        while ((ch = peek()) != null) {
+            if (!backslash) {
+                if (ch == "\\") escaped = backslash = true, next();
+                else if (is_identifier_char(ch)) name += next();
+                else break;
+            }
+            else {
+                if (ch != "u") parse_error("Expecting UnicodeEscapeSequence -- uXXXX");
+                ch = read_escaped_char();
+                if (!is_identifier_char(ch)) parse_error("Unicode char: " + ch.charCodeAt(0) + " is not valid in identifier");
+                name += ch;
+                backslash = false;
+            }
+        }
+        if (HOP(KEYWORDS, name) && escaped) {
+            hex = name.charCodeAt(0).toString(16).toUpperCase();
+            name = "\\u" + "0000".substr(hex.length) + hex + name.slice(1);
+        }
+        return name;
+    };
+
+    function read_regexp(regexp) {
+        return with_eof_error("Unterminated regular expression", function(){
+            var prev_backslash = false, ch, in_class = false;
+            while ((ch = next(true))) if (prev_backslash) {
+                regexp += "\\" + ch;
+                prev_backslash = false;
+            } else if (ch == "[") {
+                in_class = true;
+                regexp += ch;
+            } else if (ch == "]" && in_class) {
+                in_class = false;
+                regexp += ch;
+            } else if (ch == "/" && !in_class) {
+                break;
+            } else if (ch == "\\") {
+                prev_backslash = true;
+            } else {
+                regexp += ch;
+            }
+            var mods = read_name();
+            return token("regexp", [ regexp, mods ]);
+        });
+    };
+
+    function read_operator(prefix) {
+        function grow(op) {
+            if (!peek()) return op;
+            var bigger = op + peek();
+            if (HOP(OPERATORS, bigger)) {
+                next();
+                return grow(bigger);
+            } else {
+                return op;
+            }
+        };
+        return token("operator", grow(prefix || next()));
+    };
+
+    function handle_slash() {
+        next();
+        var regex_allowed = S.regex_allowed;
+        switch (peek()) {
+          case "/":
+            S.comments_before.push(read_line_comment());
+            S.regex_allowed = regex_allowed;
+            return next_token();
+          case "*":
+            S.comments_before.push(read_multiline_comment());
+            S.regex_allowed = regex_allowed;
+            return next_token();
+        }
+        return S.regex_allowed ? read_regexp("") : read_operator("/");
+    };
+
+    function handle_dot() {
+        next();
+        return is_digit(peek())
+            ? read_num(".")
+            : token("punc", ".");
+    };
+
+    function read_word() {
+        var word = read_name();
+        return !HOP(KEYWORDS, word)
+            ? token("name", word)
+            : HOP(OPERATORS, word)
+            ? token("operator", word)
+            : HOP(KEYWORDS_ATOM, word)
+            ? token("atom", word)
+            : token("keyword", word);
+    };
+
+    function with_eof_error(eof_error, cont) {
+        try {
+            return cont();
+        } catch(ex) {
+            if (ex === EX_EOF) parse_error(eof_error);
+            else throw ex;
+        }
+    };
+
+    function next_token(force_regexp) {
+        if (force_regexp != null)
+            return read_regexp(force_regexp);
+        skip_whitespace();
+        start_token();
+        var ch = peek();
+        if (!ch) return token("eof");
+        if (is_digit(ch)) return read_num();
+        if (ch == '"' || ch == "'") return read_string();
+        if (HOP(PUNC_CHARS, ch)) return token("punc", next());
+        if (ch == ".") return handle_dot();
+        if (ch == "/") return handle_slash();
+        if (HOP(OPERATOR_CHARS, ch)) return read_operator();
+        if (ch == "\\" || is_identifier_start(ch)) return read_word();
+        parse_error("Unexpected character '" + ch + "'");
+    };
+
+    next_token.context = function(nc) {
+        if (nc) S = nc;
+        return S;
+    };
+
+    return next_token;
+
+};
+
+/* -----[ Parser (constants) ]----- */
+
+var UNARY_PREFIX = array_to_hash([
+    "typeof",
+    "void",
+    "delete",
+    "--",
+    "++",
+    "!",
+    "~",
+    "-",
+    "+"
+]);
+
+var UNARY_POSTFIX = array_to_hash([ "--", "++" ]);
+
+var ASSIGNMENT = (function(a, ret, i){
+    while (i < a.length) {
+        ret[a[i]] = a[i].substr(0, a[i].length - 1);
+        i++;
+    }
+    return ret;
+})(
+    ["+=", "-=", "/=", "*=", "%=", ">>=", "<<=", ">>>=", "|=", "^=", "&="],
+    { "=": true },
+    0
+);
+
+var PRECEDENCE = (function(a, ret){
+    for (var i = 0, n = 1; i < a.length; ++i, ++n) {
+        var b = a[i];
+        for (var j = 0; j < b.length; ++j) {
+            ret[b[j]] = n;
+        }
+    }
+    return ret;
+})(
+    [
+        ["||"],
+        ["&&"],
+        ["|"],
+        ["^"],
+        ["&"],
+        ["==", "===", "!=", "!=="],
+        ["<", ">", "<=", ">=", "in", "instanceof"],
+        [">>", "<<", ">>>"],
+        ["+", "-"],
+        ["*", "/", "%"]
+    ],
+    {}
+);
+
+var STATEMENTS_WITH_LABELS = array_to_hash([ "for", "do", "while", "switch" ]);
+
+var ATOMIC_START_TOKEN = array_to_hash([ "atom", "num", "string", "regexp", "name" ]);
+
+/* -----[ Parser ]----- */
+
+function NodeWithToken(str, start, end) {
+    this.name = str;
+    this.start = start;
+    this.end = end;
+};
+
+NodeWithToken.prototype.toString = function() { return this.name; };
+
+function parse($TEXT, exigent_mode, embed_tokens) {
+
+    var S = {
+        input         : typeof $TEXT == "string" ? tokenizer($TEXT, true) : $TEXT,
+        token         : null,
+        prev          : null,
+        peeked        : null,
+        in_function   : 0,
+        in_directives : true,
+        in_loop       : 0,
+        labels        : []
+    };
+
+    S.token = next();
+
+    function is(type, value) {
+        return is_token(S.token, type, value);
+    };
+
+    function peek() { return S.peeked || (S.peeked = S.input()); };
+
+    function next() {
+        S.prev = S.token;
+        if (S.peeked) {
+            S.token = S.peeked;
+            S.peeked = null;
+        } else {
+            S.token = S.input();
+        }
+        S.in_directives = S.in_directives && (
+            S.token.type == "string" || is("punc", ";")
+        );
+        return S.token;
+    };
+
+    function prev() {
+        return S.prev;
+    };
+
+    function croak(msg, line, col, pos) {
+        var ctx = S.input.context();
+        js_error(msg,
+                 line != null ? line : ctx.tokline,
+                 col != null ? col : ctx.tokcol,
+                 pos != null ? pos : ctx.tokpos);
+    };
+
+    function token_error(token, msg) {
+        croak(msg, token.line, token.col);
+    };
+
+    function unexpected(token) {
+        if (token == null)
+            token = S.token;
+        token_error(token, "Unexpected token: " + token.type + " (" + token.value + ")");
+    };
+
+    function expect_token(type, val) {
+        if (is(type, val)) {
+            return next();
+        }
+        token_error(S.token, "Unexpected token " + S.token.type + ", expected " + type);
+    };
+
+    function expect(punc) { return expect_token("punc", punc); };
+
+    function can_insert_semicolon() {
+        return !exigent_mode && (
+            S.token.nlb || is("eof") || is("punc", "}")
+        );
+    };
+
+    function semicolon() {
+        if (is("punc", ";")) next();
+        else if (!can_insert_semicolon()) unexpected();
+    };
+
+    function as() {
+        return slice(arguments);
+    };
+
+    function parenthesised() {
+        expect("(");
+        var ex = expression();
+        expect(")");
+        return ex;
+    };
+
+    function add_tokens(str, start, end) {
+        return str instanceof NodeWithToken ? str : new NodeWithToken(str, start, end);
+    };
+
+    function maybe_embed_tokens(parser) {
+        if (embed_tokens) return function() {
+            var start = S.token;
+            var ast = parser.apply(this, arguments);
+            ast[0] = add_tokens(ast[0], start, prev());
+            return ast;
+        };
+        else return parser;
+    };
+
+    var statement = maybe_embed_tokens(function() {
+        if (is("operator", "/") || is("operator", "/=")) {
+            S.peeked = null;
+            S.token = S.input(S.token.value.substr(1)); // force regexp
+        }
+        switch (S.token.type) {
+          case "string":
+            var dir = S.in_directives, stat = simple_statement();
+            if (dir && stat[1][0] == "string" && !is("punc", ","))
+                return as("directive", stat[1][1]);
+            return stat;
+          case "num":
+          case "regexp":
+          case "operator":
+          case "atom":
+            return simple_statement();
+
+          case "name":
+            return is_token(peek(), "punc", ":")
+                ? labeled_statement(prog1(S.token.value, next, next))
+                : simple_statement();
+
+          case "punc":
+            switch (S.token.value) {
+              case "{":
+                return as("block", block_());
+              case "[":
+              case "(":
+                return simple_statement();
+              case ";":
+                next();
+                return as("block");
+              default:
+                unexpected();
+            }
+
+          case "keyword":
+            switch (prog1(S.token.value, next)) {
+              case "break":
+                return break_cont("break");
+
+              case "continue":
+                return break_cont("continue");
+
+              case "debugger":
+                semicolon();
+                return as("debugger");
+
+              case "do":
+                return (function(body){
+                    expect_token("keyword", "while");
+                    return as("do", prog1(parenthesised, semicolon), body);
+                })(in_loop(statement));
+
+              case "for":
+                return for_();
+
+              case "function":
+                return function_(true);
+
+              case "if":
+                return if_();
+
+              case "return":
+                if (S.in_function == 0)
+                    croak("'return' outside of function");
+                return as("return",
+                          is("punc", ";")
+                          ? (next(), null)
+                          : can_insert_semicolon()
+                          ? null
+                          : prog1(expression, semicolon));
+
+              case "switch":
+                return as("switch", parenthesised(), switch_block_());
+
+              case "throw":
+                if (S.token.nlb)
+                    croak("Illegal newline after 'throw'");
+                return as("throw", prog1(expression, semicolon));
+
+              case "try":
+                return try_();
+
+              case "var":
+                return prog1(var_, semicolon);
+
+              case "const":
+                return prog1(const_, semicolon);
+
+              case "while":
+                return as("while", parenthesised(), in_loop(statement));
+
+              case "with":
+                return as("with", parenthesised(), statement());
+
+              default:
+                unexpected();
+            }
+        }
+    });
+
+    function labeled_statement(label) {
+        S.labels.push(label);
+        var start = S.token, stat = statement();
+        if (exigent_mode && !HOP(STATEMENTS_WITH_LABELS, stat[0]))
+            unexpected(start);
+        S.labels.pop();
+        return as("label", label, stat);
+    };
+
+    function simple_statement() {
+        return as("stat", prog1(expression, semicolon));
+    };
+
+    function break_cont(type) {
+        var name;
+        if (!can_insert_semicolon()) {
+            name = is("name") ? S.token.value : null;
+        }
+        if (name != null) {
+            next();
+            if (!member(name, S.labels))
+                croak("Label " + name + " without matching loop or statement");
+        }
+        else if (S.in_loop == 0)
+            croak(type + " not inside a loop or switch");
+        semicolon();
+        return as(type, name);
+    };
+
+    function for_() {
+        expect("(");
+        var init = null;
+        if (!is("punc", ";")) {
+            init = is("keyword", "var")
+                ? (next(), var_(true))
+                : expression(true, true);
+            if (is("operator", "in")) {
+                if (init[0] == "var" && init[1].length > 1)
+                    croak("Only one variable declaration allowed in for..in loop");
+                return for_in(init);
+            }
+        }
+        return regular_for(init);
+    };
+
+    function regular_for(init) {
+        expect(";");
+        var test = is("punc", ";") ? null : expression();
+        expect(";");
+        var step = is("punc", ")") ? null : expression();
+        expect(")");
+        return as("for", init, test, step, in_loop(statement));
+    };
+
+    function for_in(init) {
+        var lhs = init[0] == "var" ? as("name", init[1][0]) : init;
+        next();
+        var obj = expression();
+        expect(")");
+        return as("for-in", init, lhs, obj, in_loop(statement));
+    };
+
+    var function_ = function(in_statement) {
+        var name = is("name") ? prog1(S.token.value, next) : null;
+        if (in_statement && !name)
+            unexpected();
+        expect("(");
+        return as(in_statement ? "defun" : "function",
+                  name,
+                  // arguments
+                  (function(first, a){
+                      while (!is("punc", ")")) {
+                          if (first) first = false; else expect(",");
+                          if (!is("name")) unexpected();
+                          a.push(S.token.value);
+                          next();
+                      }
+                      next();
+                      return a;
+                  })(true, []),
+                  // body
+                  (function(){
+                      ++S.in_function;
+                      var loop = S.in_loop;
+                      S.in_directives = true;
+                      S.in_loop = 0;
+                      var a = block_();
+                      --S.in_function;
+                      S.in_loop = loop;
+                      return a;
+                  })());
+    };
+
+    function if_() {
+        var cond = parenthesised(), body = statement(), belse;
+        if (is("keyword", "else")) {
+            next();
+            belse = statement();
+        }
+        return as("if", cond, body, belse);
+    };
+
+    function block_() {
+        expect("{");
+        var a = [];
+        while (!is("punc", "}")) {
+            if (is("eof")) unexpected();
+            a.push(statement());
+        }
+        next();
+        return a;
+    };
+
+    var switch_block_ = curry(in_loop, function(){
+        expect("{");
+        var a = [], cur = null;
+        while (!is("punc", "}")) {
+            if (is("eof")) unexpected();
+            if (is("keyword", "case")) {
+                next();
+                cur = [];
+                a.push([ expression(), cur ]);
+                expect(":");
+            }
+            else if (is("keyword", "default")) {
+                next();
+                expect(":");
+                cur = [];
+                a.push([ null, cur ]);
+            }
+            else {
+                if (!cur) unexpected();
+                cur.push(statement());
+            }
+        }
+        next();
+        return a;
+    });
+
+    function try_() {
+        var body = block_(), bcatch, bfinally;
+        if (is("keyword", "catch")) {
+            next();
+            expect("(");
+            if (!is("name"))
+                croak("Name expected");
+            var name = S.token.value;
+            next();
+            expect(")");
+            bcatch = [ name, block_() ];
+        }
+        if (is("keyword", "finally")) {
+            next();
+            bfinally = block_();
+        }
+        if (!bcatch && !bfinally)
+            croak("Missing catch/finally blocks");
+        return as("try", body, bcatch, bfinally);
+    };
+
+    function vardefs(no_in) {
+        var a = [];
+        for (;;) {
+            if (!is("name"))
+                unexpected();
+            var name = S.token.value;
+            next();
+            if (is("operator", "=")) {
+                next();
+                a.push([ name, expression(false, no_in) ]);
+            } else {
+                a.push([ name ]);
+            }
+            if (!is("punc", ","))
+                break;
+            next();
+        }
+        return a;
+    };
+
+    function var_(no_in) {
+        return as("var", vardefs(no_in));
+    };
+
+    function const_() {
+        return as("const", vardefs());
+    };
+
+    function new_() {
+        var newexp = expr_atom(false), args;
+        if (is("punc", "(")) {
+            next();
+            args = expr_list(")");
+        } else {
+            args = [];
+        }
+        return subscripts(as("new", newexp, args), true);
+    };
+
+    var expr_atom = maybe_embed_tokens(function(allow_calls) {
+        if (is("operator", "new")) {
+            next();
+            return new_();
+        }
+        if (is("punc")) {
+            switch (S.token.value) {
+              case "(":
+                next();
+                return subscripts(prog1(expression, curry(expect, ")")), allow_calls);
+              case "[":
+                next();
+                return subscripts(array_(), allow_calls);
+              case "{":
+                next();
+                return subscripts(object_(), allow_calls);
+            }
+            unexpected();
+        }
+        if (is("keyword", "function")) {
+            next();
+            return subscripts(function_(false), allow_calls);
+        }
+        if (HOP(ATOMIC_START_TOKEN, S.token.type)) {
+            var atom = S.token.type == "regexp"
+                ? as("regexp", S.token.value[0], S.token.value[1])
+                : as(S.token.type, S.token.value);
+            return subscripts(prog1(atom, next), allow_calls);
+        }
+        unexpected();
+    });
+
+    function expr_list(closing, allow_trailing_comma, allow_empty) {
+        var first = true, a = [];
+        while (!is("punc", closing)) {
+            if (first) first = false; else expect(",");
+            if (allow_trailing_comma && is("punc", closing)) break;
+            if (is("punc", ",") && allow_empty) {
+                a.push([ "atom", "undefined" ]);
+            } else {
+                a.push(expression(false));
+            }
+        }
+        next();
+        return a;
+    };
+
+    function array_() {
+        return as("array", expr_list("]", !exigent_mode, true));
+    };
+
+    function object_() {
+        var first = true, a = [];
+        while (!is("punc", "}")) {
+            if (first) first = false; else expect(",");
+            if (!exigent_mode && is("punc", "}"))
+                // allow trailing comma
+                break;
+            var type = S.token.type;
+            var name = as_property_name();
+            if (type == "name" && (name == "get" || name == "set") && !is("punc", ":")) {
+                a.push([ as_name(), function_(false), name ]);
+            } else {
+                expect(":");
+                a.push([ name, expression(false) ]);
+            }
+        }
+        next();
+        return as("object", a);
+    };
+
+    function as_property_name() {
+        switch (S.token.type) {
+          case "num":
+          case "string":
+            return prog1(S.token.value, next);
+        }
+        return as_name();
+    };
+
+    function as_name() {
+        switch (S.token.type) {
+          case "name":
+          case "operator":
+          case "keyword":
+          case "atom":
+            return prog1(S.token.value, next);
+          default:
+            unexpected();
+        }
+    };
+
+    function subscripts(expr, allow_calls) {
+        if (is("punc", ".")) {
+            next();
+            return subscripts(as("dot", expr, as_name()), allow_calls);
+        }
+        if (is("punc", "[")) {
+            next();
+            return subscripts(as("sub", expr, prog1(expression, curry(expect, "]"))), allow_calls);
+        }
+        if (allow_calls && is("punc", "(")) {
+            next();
+            return subscripts(as("call", expr, expr_list(")")), true);
+        }
+        return expr;
+    };
+
+    function maybe_unary(allow_calls) {
+        if (is("operator") && HOP(UNARY_PREFIX, S.token.value)) {
+            return make_unary("unary-prefix",
+                              prog1(S.token.value, next),
+                              maybe_unary(allow_calls));
+        }
+        var val = expr_atom(allow_calls);
+        while (is("operator") && HOP(UNARY_POSTFIX, S.token.value) && !S.token.nlb) {
+            val = make_unary("unary-postfix", S.token.value, val);
+            next();
+        }
+        return val;
+    };
+
+    function make_unary(tag, op, expr) {
+        if ((op == "++" || op == "--") && !is_assignable(expr))
+            croak("Invalid use of " + op + " operator");
+        return as(tag, op, expr);
+    };
+
+    function expr_op(left, min_prec, no_in) {
+        var op = is("operator") ? S.token.value : null;
+        if (op && op == "in" && no_in) op = null;
+        var prec = op != null ? PRECEDENCE[op] : null;
+        if (prec != null && prec > min_prec) {
+            next();
+            var right = expr_op(maybe_unary(true), prec, no_in);
+            return expr_op(as("binary", op, left, right), min_prec, no_in);
+        }
+        return left;
+    };
+
+    function expr_ops(no_in) {
+        return expr_op(maybe_unary(true), 0, no_in);
+    };
+
+    function maybe_conditional(no_in) {
+        var expr = expr_ops(no_in);
+        if (is("operator", "?")) {
+            next();
+            var yes = expression(false);
+            expect(":");
+            return as("conditional", expr, yes, expression(false, no_in));
+        }
+        return expr;
+    };
+
+    function is_assignable(expr) {
+        if (!exigent_mode) return true;
+        switch (expr[0]+"") {
+          case "dot":
+          case "sub":
+          case "new":
+          case "call":
+            return true;
+          case "name":
+            return expr[1] != "this";
+        }
+    };
+
+    function maybe_assign(no_in) {
+        var left = maybe_conditional(no_in), val = S.token.value;
+        if (is("operator") && HOP(ASSIGNMENT, val)) {
+            if (is_assignable(left)) {
+                next();
+                return as("assign", ASSIGNMENT[val], left, maybe_assign(no_in));
+            }
+            croak("Invalid assignment");
+        }
+        return left;
+    };
+
+    var expression = maybe_embed_tokens(function(commas, no_in) {
+        if (arguments.length == 0)
+            commas = true;
+        var expr = maybe_assign(no_in);
+        if (commas && is("punc", ",")) {
+            next();
+            return as("seq", expr, expression(true, no_in));
+        }
+        return expr;
+    });
+
+    function in_loop(cont) {
+        try {
+            ++S.in_loop;
+            return cont();
+        } finally {
+            --S.in_loop;
+        }
+    };
+
+    return as("toplevel", (function(a){
+        while (!is("eof"))
+            a.push(statement());
+        return a;
+    })([]));
+
+};
+
+/* -----[ Utilities ]----- */
+
+function curry(f) {
+    var args = slice(arguments, 1);
+    return function() { return f.apply(this, args.concat(slice(arguments))); };
+};
+
+function prog1(ret) {
+    if (ret instanceof Function)
+        ret = ret();
+    for (var i = 1, n = arguments.length; --n > 0; ++i)
+        arguments[i]();
+    return ret;
+};
+
+function array_to_hash(a) {
+    var ret = {};
+    for (var i = 0; i < a.length; ++i)
+        ret[a[i]] = true;
+    return ret;
+};
+
+function slice(a, start) {
+    return Array.prototype.slice.call(a, start || 0);
+};
+
+function characters(str) {
+    return str.split("");
+};
+
+function member(name, array) {
+    for (var i = array.length; --i >= 0;)
+        if (array[i] == name)
+            return true;
+    return false;
+};
+
+function HOP(obj, prop) {
+    return Object.prototype.hasOwnProperty.call(obj, prop);
+};
+
+var warn = function() {};
+
+/* -----[ Exports ]----- */
+
+exports.tokenizer = tokenizer;
+exports.parse = parse;
+exports.slice = slice;
+exports.curry = curry;
+exports.member = member;
+exports.array_to_hash = array_to_hash;
+exports.PRECEDENCE = PRECEDENCE;
+exports.KEYWORDS_ATOM = KEYWORDS_ATOM;
+exports.RESERVED_WORDS = RESERVED_WORDS;
+exports.KEYWORDS = KEYWORDS;
+exports.ATOMIC_START_TOKEN = ATOMIC_START_TOKEN;
+exports.OPERATORS = OPERATORS;
+exports.is_alphanumeric_char = is_alphanumeric_char;
+exports.is_identifier_start = is_identifier_start;
+exports.is_identifier_char = is_identifier_char;
+exports.set_logger = function(logger) {
+    warn = logger;
+};
+
+// Local variables:
+// js-indent-level: 4
+// End:
+});define('uglifyjs/squeeze-more', ["require", "exports", "module", "./parse-js", "./squeeze-more"], function(require, exports, module) {
+var jsp = require("./parse-js"),
+    pro = require("./process"),
+    slice = jsp.slice,
+    member = jsp.member,
+    curry = jsp.curry,
+    MAP = pro.MAP,
+    PRECEDENCE = jsp.PRECEDENCE,
+    OPERATORS = jsp.OPERATORS;
+
+function ast_squeeze_more(ast) {
+    var w = pro.ast_walker(), walk = w.walk, scope;
+    function with_scope(s, cont) {
+        var save = scope, ret;
+        scope = s;
+        ret = cont();
+        scope = save;
+        return ret;
+    };
+    function _lambda(name, args, body) {
+        return [ this[0], name, args, with_scope(body.scope, curry(MAP, body, walk)) ];
+    };
+    return w.with_walkers({
+        "toplevel": function(body) {
+            return [ this[0], with_scope(this.scope, curry(MAP, body, walk)) ];
+        },
+        "function": _lambda,
+        "defun": _lambda,
+        "new": function(ctor, args) {
+            if (ctor[0] == "name") {
+                if (ctor[1] == "Array" && !scope.has("Array")) {
+                    if (args.length != 1) {
+                        return [ "array", args ];
+                    } else {
+                        return walk([ "call", [ "name", "Array" ], args ]);
+                    }
+                } else if (ctor[1] == "Object" && !scope.has("Object")) {
+                    if (!args.length) {
+                        return [ "object", [] ];
+                    } else {
+                        return walk([ "call", [ "name", "Object" ], args ]);
+                    }
+                } else if ((ctor[1] == "RegExp" || ctor[1] == "Function" || ctor[1] == "Error") && !scope.has(ctor[1])) {
+                    return walk([ "call", [ "name", ctor[1] ], args]);
+                }
+            }
+        },
+        "call": function(expr, args) {
+            if (expr[0] == "dot" && expr[1][0] == "string" && args.length == 1
+                && (args[0][1] > 0 && expr[2] == "substring" || expr[2] == "substr")) {
+                return [ "call", [ "dot", expr[1], "slice"], args];
+            }
+            if (expr[0] == "dot" && expr[2] == "toString" && args.length == 0) {
+                // foo.toString()  ==>  foo+""
+                if (expr[1][0] == "string") return expr[1];
+                return [ "binary", "+", expr[1], [ "string", "" ]];
+            }
+            if (expr[0] == "name") {
+                if (expr[1] == "Array" && args.length != 1 && !scope.has("Array")) {
+                    return [ "array", args ];
+                }
+                if (expr[1] == "Object" && !args.length && !scope.has("Object")) {
+                    return [ "object", [] ];
+                }
+                if (expr[1] == "String" && !scope.has("String")) {
+                    return [ "binary", "+", args[0], [ "string", "" ]];
+                }
+            }
+        }
+    }, function() {
+        return walk(pro.ast_add_scope(ast));
+    });
+};
+
+exports.ast_squeeze_more = ast_squeeze_more;
+
+// Local variables:
+// js-indent-level: 4
+// End:
+});
+define('uglifyjs/process', ["require", "exports", "module", "./parse-js", "./squeeze-more"], function(require, exports, module) {
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+
+  This version is suitable for Node.js.  With minimal changes (the
+  exports stuff) it should work on any JS platform.
+
+  This file implements some AST processors.  They work on data built
+  by parse-js.
+
+  Exported functions:
+
+    - ast_mangle(ast, options) -- mangles the variable/function names
+      in the AST.  Returns an AST.
+
+    - ast_squeeze(ast) -- employs various optimizations to make the
+      final generated code even smaller.  Returns an AST.
+
+    - gen_code(ast, options) -- generates JS code from the AST.  Pass
+      true (or an object, see the code for some options) as second
+      argument to get "pretty" (indented) code.
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2010 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+var jsp = require("./parse-js"),
+    curry = jsp.curry,
+    slice = jsp.slice,
+    member = jsp.member,
+    is_identifier_char = jsp.is_identifier_char,
+    PRECEDENCE = jsp.PRECEDENCE,
+    OPERATORS = jsp.OPERATORS;
+
+/* -----[ helper for AST traversal ]----- */
+
+function ast_walker() {
+    function _vardefs(defs) {
+        return [ this[0], MAP(defs, function(def){
+            var a = [ def[0] ];
+            if (def.length > 1)
+                a[1] = walk(def[1]);
+            return a;
+        }) ];
+    };
+    function _block(statements) {
+        var out = [ this[0] ];
+        if (statements != null)
+            out.push(MAP(statements, walk));
+        return out;
+    };
+    var walkers = {
+        "string": function(str) {
+            return [ this[0], str ];
+        },
+        "num": function(num) {
+            return [ this[0], num ];
+        },
+        "name": function(name) {
+            return [ this[0], name ];
+        },
+        "toplevel": function(statements) {
+            return [ this[0], MAP(statements, walk) ];
+        },
+        "block": _block,
+        "splice": _block,
+        "var": _vardefs,
+        "const": _vardefs,
+        "try": function(t, c, f) {
+            return [
+                this[0],
+                MAP(t, walk),
+                c != null ? [ c[0], MAP(c[1], walk) ] : null,
+                f != null ? MAP(f, walk) : null
+            ];
+        },
+        "throw": function(expr) {
+            return [ this[0], walk(expr) ];
+        },
+        "new": function(ctor, args) {
+            return [ this[0], walk(ctor), MAP(args, walk) ];
+        },
+        "switch": function(expr, body) {
+            return [ this[0], walk(expr), MAP(body, function(branch){
+                return [ branch[0] ? walk(branch[0]) : null,
+                         MAP(branch[1], walk) ];
+            }) ];
+        },
+        "break": function(label) {
+            return [ this[0], label ];
+        },
+        "continue": function(label) {
+            return [ this[0], label ];
+        },
+        "conditional": function(cond, t, e) {
+            return [ this[0], walk(cond), walk(t), walk(e) ];
+        },
+        "assign": function(op, lvalue, rvalue) {
+            return [ this[0], op, walk(lvalue), walk(rvalue) ];
+        },
+        "dot": function(expr) {
+            return [ this[0], walk(expr) ].concat(slice(arguments, 1));
+        },
+        "call": function(expr, args) {
+            return [ this[0], walk(expr), MAP(args, walk) ];
+        },
+        "function": function(name, args, body) {
+            return [ this[0], name, args.slice(), MAP(body, walk) ];
+        },
+        "debugger": function() {
+            return [ this[0] ];
+        },
+        "defun": function(name, args, body) {
+            return [ this[0], name, args.slice(), MAP(body, walk) ];
+        },
+        "if": function(conditional, t, e) {
+            return [ this[0], walk(conditional), walk(t), walk(e) ];
+        },
+        "for": function(init, cond, step, block) {
+            return [ this[0], walk(init), walk(cond), walk(step), walk(block) ];
+        },
+        "for-in": function(vvar, key, hash, block) {
+            return [ this[0], walk(vvar), walk(key), walk(hash), walk(block) ];
+        },
+        "while": function(cond, block) {
+            return [ this[0], walk(cond), walk(block) ];
+        },
+        "do": function(cond, block) {
+            return [ this[0], walk(cond), walk(block) ];
+        },
+        "return": function(expr) {
+            return [ this[0], walk(expr) ];
+        },
+        "binary": function(op, left, right) {
+            return [ this[0], op, walk(left), walk(right) ];
+        },
+        "unary-prefix": function(op, expr) {
+            return [ this[0], op, walk(expr) ];
+        },
+        "unary-postfix": function(op, expr) {
+            return [ this[0], op, walk(expr) ];
+        },
+        "sub": function(expr, subscript) {
+            return [ this[0], walk(expr), walk(subscript) ];
+        },
+        "object": function(props) {
+            return [ this[0], MAP(props, function(p){
+                return p.length == 2
+                    ? [ p[0], walk(p[1]) ]
+                    : [ p[0], walk(p[1]), p[2] ]; // get/set-ter
+            }) ];
+        },
+        "regexp": function(rx, mods) {
+            return [ this[0], rx, mods ];
+        },
+        "array": function(elements) {
+            return [ this[0], MAP(elements, walk) ];
+        },
+        "stat": function(stat) {
+            return [ this[0], walk(stat) ];
+        },
+        "seq": function() {
+            return [ this[0] ].concat(MAP(slice(arguments), walk));
+        },
+        "label": function(name, block) {
+            return [ this[0], name, walk(block) ];
+        },
+        "with": function(expr, block) {
+            return [ this[0], walk(expr), walk(block) ];
+        },
+        "atom": function(name) {
+            return [ this[0], name ];
+        },
+        "directive": function(dir) {
+            return [ this[0], dir ];
+        }
+    };
+
+    var user = {};
+    var stack = [];
+    function walk(ast) {
+        if (ast == null)
+            return null;
+        try {
+            stack.push(ast);
+            var type = ast[0];
+            var gen = user[type];
+            if (gen) {
+                var ret = gen.apply(ast, ast.slice(1));
+                if (ret != null)
+                    return ret;
+            }
+            gen = walkers[type];
+            return gen.apply(ast, ast.slice(1));
+        } finally {
+            stack.pop();
+        }
+    };
+
+    function dive(ast) {
+        if (ast == null)
+            return null;
+        try {
+            stack.push(ast);
+            return walkers[ast[0]].apply(ast, ast.slice(1));
+        } finally {
+            stack.pop();
+        }
+    };
+
+    function with_walkers(walkers, cont){
+        var save = {}, i;
+        for (i in walkers) if (HOP(walkers, i)) {
+            save[i] = user[i];
+            user[i] = walkers[i];
+        }
+        var ret = cont();
+        for (i in save) if (HOP(save, i)) {
+            if (!save[i]) delete user[i];
+            else user[i] = save[i];
+        }
+        return ret;
+    };
+
+    return {
+        walk: walk,
+        dive: dive,
+        with_walkers: with_walkers,
+        parent: function() {
+            return stack[stack.length - 2]; // last one is current node
+        },
+        stack: function() {
+            return stack;
+        }
+    };
+};
+
+/* -----[ Scope and mangling ]----- */
+
+function Scope(parent) {
+    this.names = {};        // names defined in this scope
+    this.mangled = {};      // mangled names (orig.name => mangled)
+    this.rev_mangled = {};  // reverse lookup (mangled => orig.name)
+    this.cname = -1;        // current mangled name
+    this.refs = {};         // names referenced from this scope
+    this.uses_with = false; // will become TRUE if with() is detected in this or any subscopes
+    this.uses_eval = false; // will become TRUE if eval() is detected in this or any subscopes
+    this.directives = [];   // directives activated from this scope
+    this.parent = parent;   // parent scope
+    this.children = [];     // sub-scopes
+    if (parent) {
+        this.level = parent.level + 1;
+        parent.children.push(this);
+    } else {
+        this.level = 0;
+    }
+};
+
+function base54_digits() {
+    if (typeof DIGITS_OVERRIDE_FOR_TESTING != "undefined")
+        return DIGITS_OVERRIDE_FOR_TESTING;
+    else
+        return "etnrisouaflchpdvmgybwESxTNCkLAOM_DPHBjFIqRUzWXV$JKQGYZ0516372984";
+}
+
+var base54 = (function(){
+    var DIGITS = base54_digits();
+    return function(num) {
+        var ret = "", base = 54;
+        do {
+            ret += DIGITS.charAt(num % base);
+            num = Math.floor(num / base);
+            base = 64;
+        } while (num > 0);
+        return ret;
+    };
+})();
+
+Scope.prototype = {
+    has: function(name) {
+        for (var s = this; s; s = s.parent)
+            if (HOP(s.names, name))
+                return s;
+    },
+    has_mangled: function(mname) {
+        for (var s = this; s; s = s.parent)
+            if (HOP(s.rev_mangled, mname))
+                return s;
+    },
+    toJSON: function() {
+        return {
+            names: this.names,
+            uses_eval: this.uses_eval,
+            uses_with: this.uses_with
+        };
+    },
+
+    next_mangled: function() {
+        // we must be careful that the new mangled name:
+        //
+        // 1. doesn't shadow a mangled name from a parent
+        //    scope, unless we don't reference the original
+        //    name from this scope OR from any sub-scopes!
+        //    This will get slow.
+        //
+        // 2. doesn't shadow an original name from a parent
+        //    scope, in the event that the name is not mangled
+        //    in the parent scope and we reference that name
+        //    here OR IN ANY SUBSCOPES!
+        //
+        // 3. doesn't shadow a name that is referenced but not
+        //    defined (possibly global defined elsewhere).
+        for (;;) {
+            var m = base54(++this.cname), prior;
+
+            // case 1.
+            prior = this.has_mangled(m);
+            if (prior && this.refs[prior.rev_mangled[m]] === prior)
+                continue;
+
+            // case 2.
+            prior = this.has(m);
+            if (prior && prior !== this && this.refs[m] === prior && !prior.has_mangled(m))
+                continue;
+
+            // case 3.
+            if (HOP(this.refs, m) && this.refs[m] == null)
+                continue;
+
+            // I got "do" once. :-/
+            if (!is_identifier(m))
+                continue;
+
+            return m;
+        }
+    },
+    set_mangle: function(name, m) {
+        this.rev_mangled[m] = name;
+        return this.mangled[name] = m;
+    },
+    get_mangled: function(name, newMangle) {
+        if (this.uses_eval || this.uses_with) return name; // no mangle if eval or with is in use
+        var s = this.has(name);
+        if (!s) return name; // not in visible scope, no mangle
+        if (HOP(s.mangled, name)) return s.mangled[name]; // already mangled in this scope
+        if (!newMangle) return name;                      // not found and no mangling requested
+        return s.set_mangle(name, s.next_mangled());
+    },
+    references: function(name) {
+        return name && !this.parent || this.uses_with || this.uses_eval || this.refs[name];
+    },
+    define: function(name, type) {
+        if (name != null) {
+            if (type == "var" || !HOP(this.names, name))
+                this.names[name] = type || "var";
+            return name;
+        }
+    },
+    active_directive: function(dir) {
+        return member(dir, this.directives) || this.parent && this.parent.active_directive(dir);
+    }
+};
+
+function ast_add_scope(ast) {
+
+    var current_scope = null;
+    var w = ast_walker(), walk = w.walk;
+    var having_eval = [];
+
+    function with_new_scope(cont) {
+        current_scope = new Scope(current_scope);
+        current_scope.labels = new Scope();
+        var ret = current_scope.body = cont();
+        ret.scope = current_scope;
+        current_scope = current_scope.parent;
+        return ret;
+    };
+
+    function define(name, type) {
+        return current_scope.define(name, type);
+    };
+
+    function reference(name) {
+        current_scope.refs[name] = true;
+    };
+
+    function _lambda(name, args, body) {
+        var is_defun = this[0] == "defun";
+        return [ this[0], is_defun ? define(name, "defun") : name, args, with_new_scope(function(){
+            if (!is_defun) define(name, "lambda");
+            MAP(args, function(name){ define(name, "arg") });
+            return MAP(body, walk);
+        })];
+    };
+
+    function _vardefs(type) {
+        return function(defs) {
+            MAP(defs, function(d){
+                define(d[0], type);
+                if (d[1]) reference(d[0]);
+            });
+        };
+    };
+
+    function _breacont(label) {
+        if (label)
+            current_scope.labels.refs[label] = true;
+    };
+
+    return with_new_scope(function(){
+        // process AST
+        var ret = w.with_walkers({
+            "function": _lambda,
+            "defun": _lambda,
+            "label": function(name, stat) { current_scope.labels.define(name) },
+            "break": _breacont,
+            "continue": _breacont,
+            "with": function(expr, block) {
+                for (var s = current_scope; s; s = s.parent)
+                    s.uses_with = true;
+            },
+            "var": _vardefs("var"),
+            "const": _vardefs("const"),
+            "try": function(t, c, f) {
+                if (c != null) return [
+                    this[0],
+                    MAP(t, walk),
+                    [ define(c[0], "catch"), MAP(c[1], walk) ],
+                    f != null ? MAP(f, walk) : null
+                ];
+            },
+            "name": function(name) {
+                if (name == "eval")
+                    having_eval.push(current_scope);
+                reference(name);
+            }
+        }, function(){
+            return walk(ast);
+        });
+
+        // the reason why we need an additional pass here is
+        // that names can be used prior to their definition.
+
+        // scopes where eval was detected and their parents
+        // are marked with uses_eval, unless they define the
+        // "eval" name.
+        MAP(having_eval, function(scope){
+            if (!scope.has("eval")) while (scope) {
+                scope.uses_eval = true;
+                scope = scope.parent;
+            }
+        });
+
+        // for referenced names it might be useful to know
+        // their origin scope.  current_scope here is the
+        // toplevel one.
+        function fixrefs(scope, i) {
+            // do children first; order shouldn't matter
+            for (i = scope.children.length; --i >= 0;)
+                fixrefs(scope.children[i]);
+            for (i in scope.refs) if (HOP(scope.refs, i)) {
+                // find origin scope and propagate the reference to origin
+                for (var origin = scope.has(i), s = scope; s; s = s.parent) {
+                    s.refs[i] = origin;
+                    if (s === origin) break;
+                }
+            }
+        };
+        fixrefs(current_scope);
+
+        return ret;
+    });
+
+};
+
+/* -----[ mangle names ]----- */
+
+function ast_mangle(ast, options) {
+    var w = ast_walker(), walk = w.walk, scope;
+    options = defaults(options, {
+        mangle       : true,
+        toplevel     : false,
+        defines      : null,
+        except       : null,
+        no_functions : false
+    });
+
+    function get_mangled(name, newMangle) {
+        if (!options.mangle) return name;
+        if (!options.toplevel && !scope.parent) return name; // don't mangle toplevel
+        if (options.except && member(name, options.except))
+            return name;
+        if (options.no_functions && HOP(scope.names, name) &&
+            (scope.names[name] == 'defun' || scope.names[name] == 'lambda'))
+            return name;
+        return scope.get_mangled(name, newMangle);
+    };
+
+    function get_define(name) {
+        if (options.defines) {
+            // we always lookup a defined symbol for the current scope FIRST, so declared
+            // vars trump a DEFINE symbol, but if no such var is found, then match a DEFINE value
+            if (!scope.has(name)) {
+                if (HOP(options.defines, name)) {
+                    return options.defines[name];
+                }
+            }
+            return null;
+        }
+    };
+
+    function _lambda(name, args, body) {
+        if (!options.no_functions && options.mangle) {
+            var is_defun = this[0] == "defun", extra;
+            if (name) {
+                if (is_defun) name = get_mangled(name);
+                else if (body.scope.references(name)) {
+                    extra = {};
+                    if (!(scope.uses_eval || scope.uses_with))
+                        name = extra[name] = scope.next_mangled();
+                    else
+                        extra[name] = name;
+                }
+                else name = null;
+            }
+        }
+        body = with_scope(body.scope, function(){
+            args = MAP(args, function(name){ return get_mangled(name) });
+            return MAP(body, walk);
+        }, extra);
+        return [ this[0], name, args, body ];
+    };
+
+    function with_scope(s, cont, extra) {
+        var _scope = scope;
+        scope = s;
+        if (extra) for (var i in extra) if (HOP(extra, i)) {
+            s.set_mangle(i, extra[i]);
+        }
+        for (var i in s.names) if (HOP(s.names, i)) {
+            get_mangled(i, true);
+        }
+        var ret = cont();
+        ret.scope = s;
+        scope = _scope;
+        return ret;
+    };
+
+    function _vardefs(defs) {
+        return [ this[0], MAP(defs, function(d){
+            return [ get_mangled(d[0]), walk(d[1]) ];
+        }) ];
+    };
+
+    function _breacont(label) {
+        if (label) return [ this[0], scope.labels.get_mangled(label) ];
+    };
+
+    return w.with_walkers({
+        "function": _lambda,
+        "defun": function() {
+            // move function declarations to the top when
+            // they are not in some block.
+            var ast = _lambda.apply(this, arguments);
+            switch (w.parent()[0]) {
+              case "toplevel":
+              case "function":
+              case "defun":
+                return MAP.at_top(ast);
+            }
+            return ast;
+        },
+        "label": function(label, stat) {
+            if (scope.labels.refs[label]) return [
+                this[0],
+                scope.labels.get_mangled(label, true),
+                walk(stat)
+            ];
+            return walk(stat);
+        },
+        "break": _breacont,
+        "continue": _breacont,
+        "var": _vardefs,
+        "const": _vardefs,
+        "name": function(name) {
+            return get_define(name) || [ this[0], get_mangled(name) ];
+        },
+        "try": function(t, c, f) {
+            return [ this[0],
+                     MAP(t, walk),
+                     c != null ? [ get_mangled(c[0]), MAP(c[1], walk) ] : null,
+                     f != null ? MAP(f, walk) : null ];
+        },
+        "toplevel": function(body) {
+            var self = this;
+            return with_scope(self.scope, function(){
+                return [ self[0], MAP(body, walk) ];
+            });
+        },
+        "directive": function() {
+            return MAP.at_top(this);
+        }
+    }, function() {
+        return walk(ast_add_scope(ast));
+    });
+};
+
+/* -----[
+   - compress foo["bar"] into foo.bar,
+   - remove block brackets {} where possible
+   - join consecutive var declarations
+   - various optimizations for IFs:
+   - if (cond) foo(); else bar();  ==>  cond?foo():bar();
+   - if (cond) foo();  ==>  cond&&foo();
+   - if (foo) return bar(); else return baz();  ==> return foo?bar():baz(); // also for throw
+   - if (foo) return bar(); else something();  ==> {if(foo)return bar();something()}
+   ]----- */
+
+var warn = function(){};
+
+function best_of(ast1, ast2) {
+    return gen_code(ast1).length > gen_code(ast2[0] == "stat" ? ast2[1] : ast2).length ? ast2 : ast1;
+};
+
+function last_stat(b) {
+    if (b[0] == "block" && b[1] && b[1].length > 0)
+        return b[1][b[1].length - 1];
+    return b;
+}
+
+function aborts(t) {
+    if (t) switch (last_stat(t)[0]) {
+      case "return":
+      case "break":
+      case "continue":
+      case "throw":
+        return true;
+    }
+};
+
+function boolean_expr(expr) {
+    return ( (expr[0] == "unary-prefix"
+              && member(expr[1], [ "!", "delete" ])) ||
+
+             (expr[0] == "binary"
+              && member(expr[1], [ "in", "instanceof", "==", "!=", "===", "!==", "<", "<=", ">=", ">" ])) ||
+
+             (expr[0] == "binary"
+              && member(expr[1], [ "&&", "||" ])
+              && boolean_expr(expr[2])
+              && boolean_expr(expr[3])) ||
+
+             (expr[0] == "conditional"
+              && boolean_expr(expr[2])
+              && boolean_expr(expr[3])) ||
+
+             (expr[0] == "assign"
+              && expr[1] === true
+              && boolean_expr(expr[3])) ||
+
+             (expr[0] == "seq"
+              && boolean_expr(expr[expr.length - 1]))
+           );
+};
+
+function empty(b) {
+    return !b || (b[0] == "block" && (!b[1] || b[1].length == 0));
+};
+
+function is_string(node) {
+    return (node[0] == "string" ||
+            node[0] == "unary-prefix" && node[1] == "typeof" ||
+            node[0] == "binary" && node[1] == "+" &&
+            (is_string(node[2]) || is_string(node[3])));
+};
+
+var when_constant = (function(){
+
+    var $NOT_CONSTANT = {};
+
+    // this can only evaluate constant expressions.  If it finds anything
+    // not constant, it throws $NOT_CONSTANT.
+    function evaluate(expr) {
+        switch (expr[0]) {
+          case "string":
+          case "num":
+            return expr[1];
+          case "name":
+          case "atom":
+            switch (expr[1]) {
+              case "true": return true;
+              case "false": return false;
+              case "null": return null;
+            }
+            break;
+          case "unary-prefix":
+            switch (expr[1]) {
+              case "!": return !evaluate(expr[2]);
+              case "typeof": return typeof evaluate(expr[2]);
+              case "~": return ~evaluate(expr[2]);
+              case "-": return -evaluate(expr[2]);
+              case "+": return +evaluate(expr[2]);
+            }
+            break;
+          case "binary":
+            var left = expr[2], right = expr[3];
+            switch (expr[1]) {
+              case "&&"         : return evaluate(left) &&         evaluate(right);
+              case "||"         : return evaluate(left) ||         evaluate(right);
+              case "|"          : return evaluate(left) |          evaluate(right);
+              case "&"          : return evaluate(left) &          evaluate(right);
+              case "^"          : return evaluate(left) ^          evaluate(right);
+              case "+"          : return evaluate(left) +          evaluate(right);
+              case "*"          : return evaluate(left) *          evaluate(right);
+              case "/"          : return evaluate(left) /          evaluate(right);
+              case "%"          : return evaluate(left) %          evaluate(right);
+              case "-"          : return evaluate(left) -          evaluate(right);
+              case "<<"         : return evaluate(left) <<         evaluate(right);
+              case ">>"         : return evaluate(left) >>         evaluate(right);
+              case ">>>"        : return evaluate(left) >>>        evaluate(right);
+              case "=="         : return evaluate(left) ==         evaluate(right);
+              case "==="        : return evaluate(left) ===        evaluate(right);
+              case "!="         : return evaluate(left) !=         evaluate(right);
+              case "!=="        : return evaluate(left) !==        evaluate(right);
+              case "<"          : return evaluate(left) <          evaluate(right);
+              case "<="         : return evaluate(left) <=         evaluate(right);
+              case ">"          : return evaluate(left) >          evaluate(right);
+              case ">="         : return evaluate(left) >=         evaluate(right);
+              case "in"         : return evaluate(left) in         evaluate(right);
+              case "instanceof" : return evaluate(left) instanceof evaluate(right);
+            }
+        }
+        throw $NOT_CONSTANT;
+    };
+
+    return function(expr, yes, no) {
+        try {
+            var val = evaluate(expr), ast;
+            switch (typeof val) {
+              case "string": ast =  [ "string", val ]; break;
+              case "number": ast =  [ "num", val ]; break;
+              case "boolean": ast =  [ "name", String(val) ]; break;
+              default:
+                if (val === null) { ast = [ "atom", "null" ]; break; }
+                throw new Error("Can't handle constant of type: " + (typeof val));
+            }
+            return yes.call(expr, ast, val);
+        } catch(ex) {
+            if (ex === $NOT_CONSTANT) {
+                if (expr[0] == "binary"
+                    && (expr[1] == "===" || expr[1] == "!==")
+                    && ((is_string(expr[2]) && is_string(expr[3]))
+                        || (boolean_expr(expr[2]) && boolean_expr(expr[3])))) {
+                    expr[1] = expr[1].substr(0, 2);
+                }
+                else if (no && expr[0] == "binary"
+                         && (expr[1] == "||" || expr[1] == "&&")) {
+                    // the whole expression is not constant but the lval may be...
+                    try {
+                        var lval = evaluate(expr[2]);
+                        expr = ((expr[1] == "&&" && (lval ? expr[3] : lval))    ||
+                                (expr[1] == "||" && (lval ? lval    : expr[3])) ||
+                                expr);
+                    } catch(ex2) {
+                        // IGNORE... lval is not constant
+                    }
+                }
+                return no ? no.call(expr, expr) : null;
+            }
+            else throw ex;
+        }
+    };
+
+})();
+
+function warn_unreachable(ast) {
+    if (!empty(ast))
+        warn("Dropping unreachable code: " + gen_code(ast, true));
+};
+
+function prepare_ifs(ast) {
+    var w = ast_walker(), walk = w.walk;
+    // In this first pass, we rewrite ifs which abort with no else with an
+    // if-else.  For example:
+    //
+    // if (x) {
+    //     blah();
+    //     return y;
+    // }
+    // foobar();
+    //
+    // is rewritten into:
+    //
+    // if (x) {
+    //     blah();
+    //     return y;
+    // } else {
+    //     foobar();
+    // }
+    function redo_if(statements) {
+        statements = MAP(statements, walk);
+
+        for (var i = 0; i < statements.length; ++i) {
+            var fi = statements[i];
+            if (fi[0] != "if") continue;
+
+            if (fi[3]) continue;
+
+            var t = fi[2];
+            if (!aborts(t)) continue;
+
+            var conditional = walk(fi[1]);
+
+            var e_body = redo_if(statements.slice(i + 1));
+            var e = e_body.length == 1 ? e_body[0] : [ "block", e_body ];
+
+            return statements.slice(0, i).concat([ [
+                fi[0],          // "if"
+                conditional,    // conditional
+                t,              // then
+                e               // else
+            ] ]);
+        }
+
+        return statements;
+    };
+
+    function redo_if_lambda(name, args, body) {
+        body = redo_if(body);
+        return [ this[0], name, args, body ];
+    };
+
+    function redo_if_block(statements) {
+        return [ this[0], statements != null ? redo_if(statements) : null ];
+    };
+
+    return w.with_walkers({
+        "defun": redo_if_lambda,
+        "function": redo_if_lambda,
+        "block": redo_if_block,
+        "splice": redo_if_block,
+        "toplevel": function(statements) {
+            return [ this[0], redo_if(statements) ];
+        },
+        "try": function(t, c, f) {
+            return [
+                this[0],
+                redo_if(t),
+                c != null ? [ c[0], redo_if(c[1]) ] : null,
+                f != null ? redo_if(f) : null
+            ];
+        }
+    }, function() {
+        return walk(ast);
+    });
+};
+
+function for_side_effects(ast, handler) {
+    var w = ast_walker(), walk = w.walk;
+    var $stop = {}, $restart = {};
+    function stop() { throw $stop };
+    function restart() { throw $restart };
+    function found(){ return handler.call(this, this, w, stop, restart) };
+    function unary(op) {
+        if (op == "++" || op == "--")
+            return found.apply(this, arguments);
+    };
+    function binary(op) {
+        if (op == "&&" || op == "||")
+            return found.apply(this, arguments);
+    };
+    return w.with_walkers({
+        "try": found,
+        "throw": found,
+        "return": found,
+        "new": found,
+        "switch": found,
+        "break": found,
+        "continue": found,
+        "assign": found,
+        "call": found,
+        "if": found,
+        "for": found,
+        "for-in": found,
+        "while": found,
+        "do": found,
+        "return": found,
+        "unary-prefix": unary,
+        "unary-postfix": unary,
+        "conditional": found,
+        "binary": binary,
+        "defun": found
+    }, function(){
+        while (true) try {
+            walk(ast);
+            break;
+        } catch(ex) {
+            if (ex === $stop) break;
+            if (ex === $restart) continue;
+            throw ex;
+        }
+    });
+};
+
+function ast_lift_variables(ast) {
+    var w = ast_walker(), walk = w.walk, scope;
+    function do_body(body, env) {
+        var _scope = scope;
+        scope = env;
+        body = MAP(body, walk);
+        var hash = {}, names = MAP(env.names, function(type, name){
+            if (type != "var") return MAP.skip;
+            if (!env.references(name)) return MAP.skip;
+            hash[name] = true;
+            return [ name ];
+        });
+        if (names.length > 0) {
+            // looking for assignments to any of these variables.
+            // we can save considerable space by moving the definitions
+            // in the var declaration.
+            for_side_effects([ "block", body ], function(ast, walker, stop, restart) {
+                if (ast[0] == "assign"
+                    && ast[1] === true
+                    && ast[2][0] == "name"
+                    && HOP(hash, ast[2][1])) {
+                    // insert the definition into the var declaration
+                    for (var i = names.length; --i >= 0;) {
+                        if (names[i][0] == ast[2][1]) {
+                            if (names[i][1]) // this name already defined, we must stop
+                                stop();
+                            names[i][1] = ast[3]; // definition
+                            names.push(names.splice(i, 1)[0]);
+                            break;
+                        }
+                    }
+                    // remove this assignment from the AST.
+                    var p = walker.parent();
+                    if (p[0] == "seq") {
+                        var a = p[2];
+                        a.unshift(0, p.length);
+                        p.splice.apply(p, a);
+                    }
+                    else if (p[0] == "stat") {
+                        p.splice(0, p.length, "block"); // empty statement
+                    }
+                    else {
+                        stop();
+                    }
+                    restart();
+                }
+                stop();
+            });
+            body.unshift([ "var", names ]);
+        }
+        scope = _scope;
+        return body;
+    };
+    function _vardefs(defs) {
+        var ret = null;
+        for (var i = defs.length; --i >= 0;) {
+            var d = defs[i];
+            if (!d[1]) continue;
+            d = [ "assign", true, [ "name", d[0] ], d[1] ];
+            if (ret == null) ret = d;
+            else ret = [ "seq", d, ret ];
+        }
+        if (ret == null && w.parent()[0] != "for") {
+            if (w.parent()[0] == "for-in")
+                return [ "name", defs[0][0] ];
+            return MAP.skip;
+        }
+        return [ "stat", ret ];
+    };
+    function _toplevel(body) {
+        return [ this[0], do_body(body, this.scope) ];
+    };
+    return w.with_walkers({
+        "function": function(name, args, body){
+            for (var i = args.length; --i >= 0 && !body.scope.references(args[i]);)
+                args.pop();
+            if (!body.scope.references(name)) name = null;
+            return [ this[0], name, args, do_body(body, body.scope) ];
+        },
+        "defun": function(name, args, body){
+            if (!scope.references(name)) return MAP.skip;
+            for (var i = args.length; --i >= 0 && !body.scope.references(args[i]);)
+                args.pop();
+            return [ this[0], name, args, do_body(body, body.scope) ];
+        },
+        "var": _vardefs,
+        "toplevel": _toplevel
+    }, function(){
+        return walk(ast_add_scope(ast));
+    });
+};
+
+function ast_squeeze(ast, options) {
+    ast = squeeze_1(ast, options);
+    ast = squeeze_2(ast, options);
+    return ast;
+};
+
+function squeeze_1(ast, options) {
+    options = defaults(options, {
+        make_seqs   : true,
+        dead_code   : true,
+        no_warnings : false,
+        keep_comps  : true,
+        unsafe      : false
+    });
+
+    var w = ast_walker(), walk = w.walk, scope;
+
+    function negate(c) {
+        var not_c = [ "unary-prefix", "!", c ];
+        switch (c[0]) {
+          case "unary-prefix":
+            return c[1] == "!" && boolean_expr(c[2]) ? c[2] : not_c;
+          case "seq":
+            c = slice(c);
+            c[c.length - 1] = negate(c[c.length - 1]);
+            return c;
+          case "conditional":
+            return best_of(not_c, [ "conditional", c[1], negate(c[2]), negate(c[3]) ]);
+          case "binary":
+            var op = c[1], left = c[2], right = c[3];
+            if (!options.keep_comps) switch (op) {
+              case "<="  : return [ "binary", ">", left, right ];
+              case "<"   : return [ "binary", ">=", left, right ];
+              case ">="  : return [ "binary", "<", left, right ];
+              case ">"   : return [ "binary", "<=", left, right ];
+            }
+            switch (op) {
+              case "=="  : return [ "binary", "!=", left, right ];
+              case "!="  : return [ "binary", "==", left, right ];
+              case "===" : return [ "binary", "!==", left, right ];
+              case "!==" : return [ "binary", "===", left, right ];
+              case "&&"  : return best_of(not_c, [ "binary", "||", negate(left), negate(right) ]);
+              case "||"  : return best_of(not_c, [ "binary", "&&", negate(left), negate(right) ]);
+            }
+            break;
+        }
+        return not_c;
+    };
+
+    function make_conditional(c, t, e) {
+        var make_real_conditional = function() {
+            if (c[0] == "unary-prefix" && c[1] == "!") {
+                return e ? [ "conditional", c[2], e, t ] : [ "binary", "||", c[2], t ];
+            } else {
+                return e ? best_of(
+                    [ "conditional", c, t, e ],
+                    [ "conditional", negate(c), e, t ]
+                ) : [ "binary", "&&", c, t ];
+            }
+        };
+        // shortcut the conditional if the expression has a constant value
+        return when_constant(c, function(ast, val){
+            warn_unreachable(val ? e : t);
+            return          (val ? t : e);
+        }, make_real_conditional);
+    };
+
+    function rmblock(block) {
+        if (block != null && block[0] == "block" && block[1]) {
+            if (block[1].length == 1)
+                block = block[1][0];
+            else if (block[1].length == 0)
+                block = [ "block" ];
+        }
+        return block;
+    };
+
+    function _lambda(name, args, body) {
+        return [ this[0], name, args, tighten(body, "lambda") ];
+    };
+
+    // this function does a few things:
+    // 1. discard useless blocks
+    // 2. join consecutive var declarations
+    // 3. remove obviously dead code
+    // 4. transform consecutive statements using the comma operator
+    // 5. if block_type == "lambda" and it detects constructs like if(foo) return ... - rewrite like if (!foo) { ... }
+    function tighten(statements, block_type) {
+        statements = MAP(statements, walk);
+
+        statements = statements.reduce(function(a, stat){
+            if (stat[0] == "block") {
+                if (stat[1]) {
+                    a.push.apply(a, stat[1]);
+                }
+            } else {
+                a.push(stat);
+            }
+            return a;
+        }, []);
+
+        statements = (function(a, prev){
+            statements.forEach(function(cur){
+                if (prev && ((cur[0] == "var" && prev[0] == "var") ||
+                             (cur[0] == "const" && prev[0] == "const"))) {
+                    prev[1] = prev[1].concat(cur[1]);
+                } else {
+                    a.push(cur);
+                    prev = cur;
+                }
+            });
+            return a;
+        })([]);
+
+        if (options.dead_code) statements = (function(a, has_quit){
+            statements.forEach(function(st){
+                if (has_quit) {
+                    if (st[0] == "function" || st[0] == "defun") {
+                        a.push(st);
+                    }
+                    else if (st[0] == "var" || st[0] == "const") {
+                        if (!options.no_warnings)
+                            warn("Variables declared in unreachable code");
+                        st[1] = MAP(st[1], function(def){
+                            if (def[1] && !options.no_warnings)
+                                warn_unreachable([ "assign", true, [ "name", def[0] ], def[1] ]);
+                            return [ def[0] ];
+                        });
+                        a.push(st);
+                    }
+                    else if (!options.no_warnings)
+                        warn_unreachable(st);
+                }
+                else {
+                    a.push(st);
+                    if (member(st[0], [ "return", "throw", "break", "continue" ]))
+                        has_quit = true;
+                }
+            });
+            return a;
+        })([]);
+
+        if (options.make_seqs) statements = (function(a, prev) {
+            statements.forEach(function(cur){
+                if (prev && prev[0] == "stat" && cur[0] == "stat") {
+                    prev[1] = [ "seq", prev[1], cur[1] ];
+                } else {
+                    a.push(cur);
+                    prev = cur;
+                }
+            });
+            if (a.length >= 2
+                && a[a.length-2][0] == "stat"
+                && (a[a.length-1][0] == "return" || a[a.length-1][0] == "throw")
+                && a[a.length-1][1])
+            {
+                a.splice(a.length - 2, 2,
+                         [ a[a.length-1][0],
+                           [ "seq", a[a.length-2][1], a[a.length-1][1] ]]);
+            }
+            return a;
+        })([]);
+
+        // this increases jQuery by 1K.  Probably not such a good idea after all..
+        // part of this is done in prepare_ifs anyway.
+        // if (block_type == "lambda") statements = (function(i, a, stat){
+        //         while (i < statements.length) {
+        //                 stat = statements[i++];
+        //                 if (stat[0] == "if" && !stat[3]) {
+        //                         if (stat[2][0] == "return" && stat[2][1] == null) {
+        //                                 a.push(make_if(negate(stat[1]), [ "block", statements.slice(i) ]));
+        //                                 break;
+        //                         }
+        //                         var last = last_stat(stat[2]);
+        //                         if (last[0] == "return" && last[1] == null) {
+        //                                 a.push(make_if(stat[1], [ "block", stat[2][1].slice(0, -1) ], [ "block", statements.slice(i) ]));
+        //                                 break;
+        //                         }
+        //                 }
+        //                 a.push(stat);
+        //         }
+        //         return a;
+        // })(0, []);
+
+        return statements;
+    };
+
+    function make_if(c, t, e) {
+        return when_constant(c, function(ast, val){
+            if (val) {
+                t = walk(t);
+                warn_unreachable(e);
+                return t || [ "block" ];
+            } else {
+                e = walk(e);
+                warn_unreachable(t);
+                return e || [ "block" ];
+            }
+        }, function() {
+            return make_real_if(c, t, e);
+        });
+    };
+
+    function abort_else(c, t, e) {
+        var ret = [ [ "if", negate(c), e ] ];
+        if (t[0] == "block") {
+            if (t[1]) ret = ret.concat(t[1]);
+        } else {
+            ret.push(t);
+        }
+        return walk([ "block", ret ]);
+    };
+
+    function make_real_if(c, t, e) {
+        c = walk(c);
+        t = walk(t);
+        e = walk(e);
+
+        if (empty(e) && empty(t))
+            return [ "stat", c ];
+
+        if (empty(t)) {
+            c = negate(c);
+            t = e;
+            e = null;
+        } else if (empty(e)) {
+            e = null;
+        } else {
+            // if we have both else and then, maybe it makes sense to switch them?
+            (function(){
+                var a = gen_code(c);
+                var n = negate(c);
+                var b = gen_code(n);
+                if (b.length < a.length) {
+                    var tmp = t;
+                    t = e;
+                    e = tmp;
+                    c = n;
+                }
+            })();
+        }
+        var ret = [ "if", c, t, e ];
+        if (t[0] == "if" && empty(t[3]) && empty(e)) {
+            ret = best_of(ret, walk([ "if", [ "binary", "&&", c, t[1] ], t[2] ]));
+        }
+        else if (t[0] == "stat") {
+            if (e) {
+                if (e[0] == "stat")
+                    ret = best_of(ret, [ "stat", make_conditional(c, t[1], e[1]) ]);
+                else if (aborts(e))
+                    ret = abort_else(c, t, e);
+            }
+            else {
+                ret = best_of(ret, [ "stat", make_conditional(c, t[1]) ]);
+            }
+        }
+        else if (e && t[0] == e[0] && (t[0] == "return" || t[0] == "throw") && t[1] && e[1]) {
+            ret = best_of(ret, [ t[0], make_conditional(c, t[1], e[1] ) ]);
+        }
+        else if (e && aborts(t)) {
+            ret = [ [ "if", c, t ] ];
+            if (e[0] == "block") {
+                if (e[1]) ret = ret.concat(e[1]);
+            }
+            else {
+                ret.push(e);
+            }
+            ret = walk([ "block", ret ]);
+        }
+        else if (t && aborts(e)) {
+            ret = abort_else(c, t, e);
+        }
+        return ret;
+    };
+
+    function _do_while(cond, body) {
+        return when_constant(cond, function(cond, val){
+            if (!val) {
+                warn_unreachable(body);
+                return [ "block" ];
+            } else {
+                return [ "for", null, null, null, walk(body) ];
+            }
+        });
+    };
+
+    return w.with_walkers({
+        "sub": function(expr, subscript) {
+            if (subscript[0] == "string") {
+                var name = subscript[1];
+                if (is_identifier(name))
+                    return [ "dot", walk(expr), name ];
+                else if (/^[1-9][0-9]*$/.test(name) || name === "0")
+                    return [ "sub", walk(expr), [ "num", parseInt(name, 10) ] ];
+            }
+        },
+        "if": make_if,
+        "toplevel": function(body) {
+            return [ "toplevel", tighten(body) ];
+        },
+        "switch": function(expr, body) {
+            var last = body.length - 1;
+            return [ "switch", walk(expr), MAP(body, function(branch, i){
+                var block = tighten(branch[1]);
+                if (i == last && block.length > 0) {
+                    var node = block[block.length - 1];
+                    if (node[0] == "break" && !node[1])
+                        block.pop();
+                }
+                return [ branch[0] ? walk(branch[0]) : null, block ];
+            }) ];
+        },
+        "function": _lambda,
+        "defun": _lambda,
+        "block": function(body) {
+            if (body) return rmblock([ "block", tighten(body) ]);
+        },
+        "binary": function(op, left, right) {
+            return when_constant([ "binary", op, walk(left), walk(right) ], function yes(c){
+                return best_of(walk(c), this);
+            }, function no() {
+                return function(){
+                    if(op != "==" && op != "!=") return;
+                    var l = walk(left), r = walk(right);
+                    if(l && l[0] == "unary-prefix" && l[1] == "!" && l[2][0] == "num")
+                        left = ['num', +!l[2][1]];
+                    else if (r && r[0] == "unary-prefix" && r[1] == "!" && r[2][0] == "num")
+                        right = ['num', +!r[2][1]];
+                    return ["binary", op, left, right];
+                }() || this;
+            });
+        },
+        "conditional": function(c, t, e) {
+            return make_conditional(walk(c), walk(t), walk(e));
+        },
+        "try": function(t, c, f) {
+            return [
+                "try",
+                tighten(t),
+                c != null ? [ c[0], tighten(c[1]) ] : null,
+                f != null ? tighten(f) : null
+            ];
+        },
+        "unary-prefix": function(op, expr) {
+            expr = walk(expr);
+            var ret = [ "unary-prefix", op, expr ];
+            if (op == "!")
+                ret = best_of(ret, negate(expr));
+            return when_constant(ret, function(ast, val){
+                return walk(ast); // it's either true or false, so minifies to !0 or !1
+            }, function() { return ret });
+        },
+        "name": function(name) {
+            switch (name) {
+              case "true": return [ "unary-prefix", "!", [ "num", 0 ]];
+              case "false": return [ "unary-prefix", "!", [ "num", 1 ]];
+            }
+        },
+        "while": _do_while,
+        "assign": function(op, lvalue, rvalue) {
+            lvalue = walk(lvalue);
+            rvalue = walk(rvalue);
+            var okOps = [ '+', '-', '/', '*', '%', '>>', '<<', '>>>', '|', '^', '&' ];
+            if (op === true && lvalue[0] === "name" && rvalue[0] === "binary" &&
+                ~okOps.indexOf(rvalue[1]) && rvalue[2][0] === "name" &&
+                rvalue[2][1] === lvalue[1]) {
+                return [ this[0], rvalue[1], lvalue, rvalue[3] ]
+            }
+            return [ this[0], op, lvalue, rvalue ];
+        },
+        "call": function(expr, args) {
+            expr = walk(expr);
+            if (options.unsafe && expr[0] == "dot" && expr[1][0] == "string" && expr[2] == "toString") {
+                return expr[1];
+            }
+            return [ this[0], expr,  MAP(args, walk) ];
+        },
+        "num": function (num) {
+            if (!isFinite(num))
+                return [ "binary", "/", num === 1 / 0
+                         ? [ "num", 1 ] : num === -1 / 0
+                         ? [ "unary-prefix", "-", [ "num", 1 ] ]
+                         : [ "num", 0 ], [ "num", 0 ] ];
+
+            return [ this[0], num ];
+        }
+    }, function() {
+        return walk(prepare_ifs(walk(prepare_ifs(ast))));
+    });
+};
+
+function squeeze_2(ast, options) {
+    var w = ast_walker(), walk = w.walk, scope;
+    function with_scope(s, cont) {
+        var save = scope, ret;
+        scope = s;
+        ret = cont();
+        scope = save;
+        return ret;
+    };
+    function lambda(name, args, body) {
+        return [ this[0], name, args, with_scope(body.scope, curry(MAP, body, walk)) ];
+    };
+    return w.with_walkers({
+        "directive": function(dir) {
+            if (scope.active_directive(dir))
+                return [ "block" ];
+            scope.directives.push(dir);
+        },
+        "toplevel": function(body) {
+            return [ this[0], with_scope(this.scope, curry(MAP, body, walk)) ];
+        },
+        "function": lambda,
+        "defun": lambda
+    }, function(){
+        return walk(ast_add_scope(ast));
+    });
+};
+
+/* -----[ re-generate code from the AST ]----- */
+
+var DOT_CALL_NO_PARENS = jsp.array_to_hash([
+    "name",
+    "array",
+    "object",
+    "string",
+    "dot",
+    "sub",
+    "call",
+    "regexp",
+    "defun"
+]);
+
+function make_string(str, ascii_only) {
+    var dq = 0, sq = 0;
+    str = str.replace(/[\\\b\f\n\r\t\x22\x27\u2028\u2029\0]/g, function(s){
+        switch (s) {
+          case "\\": return "\\\\";
+          case "\b": return "\\b";
+          case "\f": return "\\f";
+          case "\n": return "\\n";
+          case "\r": return "\\r";
+          case "\u2028": return "\\u2028";
+          case "\u2029": return "\\u2029";
+          case '"': ++dq; return '"';
+          case "'": ++sq; return "'";
+          case "\0": return "\\0";
+        }
+        return s;
+    });
+    if (ascii_only) str = to_ascii(str);
+    if (dq > sq) return "'" + str.replace(/\x27/g, "\\'") + "'";
+    else return '"' + str.replace(/\x22/g, '\\"') + '"';
+};
+
+function to_ascii(str) {
+    return str.replace(/[\u0080-\uffff]/g, function(ch) {
+        var code = ch.charCodeAt(0).toString(16);
+        while (code.length < 4) code = "0" + code;
+        return "\\u" + code;
+    });
+};
+
+var SPLICE_NEEDS_BRACKETS = jsp.array_to_hash([ "if", "while", "do", "for", "for-in", "with" ]);
+
+function gen_code(ast, options) {
+    options = defaults(options, {
+        indent_start : 0,
+        indent_level : 4,
+        quote_keys   : false,
+        space_colon  : false,
+        beautify     : false,
+        ascii_only   : false,
+        inline_script: false
+    });
+    var beautify = !!options.beautify;
+    var indentation = 0,
+    newline = beautify ? "\n" : "",
+    space = beautify ? " " : "";
+
+    function encode_string(str) {
+        var ret = make_string(str, options.ascii_only);
+        if (options.inline_script)
+            ret = ret.replace(/<\x2fscript([>\/\t\n\f\r ])/gi, "<\\/script$1");
+        return ret;
+    };
+
+    function make_name(name) {
+        name = name.toString();
+        if (options.ascii_only)
+            name = to_ascii(name);
+        return name;
+    };
+
+    function indent(line) {
+        if (line == null)
+            line = "";
+        if (beautify)
+            line = repeat_string(" ", options.indent_start + indentation * options.indent_level) + line;
+        return line;
+    };
+
+    function with_indent(cont, incr) {
+        if (incr == null) incr = 1;
+        indentation += incr;
+        try { return cont.apply(null, slice(arguments, 1)); }
+        finally { indentation -= incr; }
+    };
+
+    function last_char(str) {
+        str = str.toString();
+        return str.charAt(str.length - 1);
+    };
+
+    function first_char(str) {
+        return str.toString().charAt(0);
+    };
+
+    function add_spaces(a) {
+        if (beautify)
+            return a.join(" ");
+        var b = [];
+        for (var i = 0; i < a.length; ++i) {
+            var next = a[i + 1];
+            b.push(a[i]);
+            if (next &&
+                ((is_identifier_char(last_char(a[i])) && (is_identifier_char(first_char(next))
+                                                          || first_char(next) == "\\")) ||
+                 (/[\+\-]$/.test(a[i].toString()) && /^[\+\-]/.test(next.toString()) ||
+                 last_char(a[i]) == "/" && first_char(next) == "/"))) {
+                b.push(" ");
+            }
+        }
+        return b.join("");
+    };
+
+    function add_commas(a) {
+        return a.join("," + space);
+    };
+
+    function parenthesize(expr) {
+        var gen = make(expr);
+        for (var i = 1; i < arguments.length; ++i) {
+            var el = arguments[i];
+            if ((el instanceof Function && el(expr)) || expr[0] == el)
+                return "(" + gen + ")";
+        }
+        return gen;
+    };
+
+    function best_of(a) {
+        if (a.length == 1) {
+            return a[0];
+        }
+        if (a.length == 2) {
+            var b = a[1];
+            a = a[0];
+            return a.length <= b.length ? a : b;
+        }
+        return best_of([ a[0], best_of(a.slice(1)) ]);
+    };
+
+    function needs_parens(expr) {
+        if (expr[0] == "function" || expr[0] == "object") {
+            // dot/call on a literal function requires the
+            // function literal itself to be parenthesized
+            // only if it's the first "thing" in a
+            // statement.  This means that the parent is
+            // "stat", but it could also be a "seq" and
+            // we're the first in this "seq" and the
+            // parent is "stat", and so on.  Messy stuff,
+            // but it worths the trouble.
+            var a = slice(w.stack()), self = a.pop(), p = a.pop();
+            while (p) {
+                if (p[0] == "stat") return true;
+                if (((p[0] == "seq" || p[0] == "call" || p[0] == "dot" || p[0] == "sub" || p[0] == "conditional") && p[1] === self) ||
+                    ((p[0] == "binary" || p[0] == "assign" || p[0] == "unary-postfix") && p[2] === self)) {
+                    self = p;
+                    p = a.pop();
+                } else {
+                    return false;
+                }
+            }
+        }
+        return !HOP(DOT_CALL_NO_PARENS, expr[0]);
+    };
+
+    function make_num(num) {
+        var str = num.toString(10), a = [ str.replace(/^0\./, ".").replace('e+', 'e') ], m;
+        if (Math.floor(num) === num) {
+            if (num >= 0) {
+                a.push("0x" + num.toString(16).toLowerCase(), // probably pointless
+                       "0" + num.toString(8)); // same.
+            } else {
+                a.push("-0x" + (-num).toString(16).toLowerCase(), // probably pointless
+                       "-0" + (-num).toString(8)); // same.
+            }
+            if ((m = /^(.*?)(0+)$/.exec(num))) {
+                a.push(m[1] + "e" + m[2].length);
+            }
+        } else if ((m = /^0?\.(0+)(.*)$/.exec(num))) {
+            a.push(m[2] + "e-" + (m[1].length + m[2].length),
+                   str.substr(str.indexOf(".")));
+        }
+        return best_of(a);
+    };
+
+    var w = ast_walker();
+    var make = w.walk;
+    return w.with_walkers({
+        "string": encode_string,
+        "num": make_num,
+        "name": make_name,
+        "debugger": function(){ return "debugger;" },
+        "toplevel": function(statements) {
+            return make_block_statements(statements)
+                .join(newline + newline);
+        },
+        "splice": function(statements) {
+            var parent = w.parent();
+            if (HOP(SPLICE_NEEDS_BRACKETS, parent)) {
+                // we need block brackets in this case
+                return make_block.apply(this, arguments);
+            } else {
+                return MAP(make_block_statements(statements, true),
+                           function(line, i) {
+                               // the first line is already indented
+                               return i > 0 ? indent(line) : line;
+                           }).join(newline);
+            }
+        },
+        "block": make_block,
+        "var": function(defs) {
+            return "var " + add_commas(MAP(defs, make_1vardef)) + ";";
+        },
+        "const": function(defs) {
+            return "const " + add_commas(MAP(defs, make_1vardef)) + ";";
+        },
+        "try": function(tr, ca, fi) {
+            var out = [ "try", make_block(tr) ];
+            if (ca) out.push("catch", "(" + ca[0] + ")", make_block(ca[1]));
+            if (fi) out.push("finally", make_block(fi));
+            return add_spaces(out);
+        },
+        "throw": function(expr) {
+            return add_spaces([ "throw", make(expr) ]) + ";";
+        },
+        "new": function(ctor, args) {
+            args = args.length > 0 ? "(" + add_commas(MAP(args, function(expr){
+                return parenthesize(expr, "seq");
+            })) + ")" : "";
+            return add_spaces([ "new", parenthesize(ctor, "seq", "binary", "conditional", "assign", function(expr){
+                var w = ast_walker(), has_call = {};
+                try {
+                    w.with_walkers({
+                        "call": function() { throw has_call },
+                        "function": function() { return this }
+                    }, function(){
+                        w.walk(expr);
+                    });
+                } catch(ex) {
+                    if (ex === has_call)
+                        return true;
+                    throw ex;
+                }
+            }) + args ]);
+        },
+        "switch": function(expr, body) {
+            return add_spaces([ "switch", "(" + make(expr) + ")", make_switch_block(body) ]);
+        },
+        "break": function(label) {
+            var out = "break";
+            if (label != null)
+                out += " " + make_name(label);
+            return out + ";";
+        },
+        "continue": function(label) {
+            var out = "continue";
+            if (label != null)
+                out += " " + make_name(label);
+            return out + ";";
+        },
+        "conditional": function(co, th, el) {
+            return add_spaces([ parenthesize(co, "assign", "seq", "conditional"), "?",
+                                parenthesize(th, "seq"), ":",
+                                parenthesize(el, "seq") ]);
+        },
+        "assign": function(op, lvalue, rvalue) {
+            if (op && op !== true) op += "=";
+            else op = "=";
+            return add_spaces([ make(lvalue), op, parenthesize(rvalue, "seq") ]);
+        },
+        "dot": function(expr) {
+            var out = make(expr), i = 1;
+            if (expr[0] == "num") {
+                if (!/[a-f.]/i.test(out))
+                    out += ".";
+            } else if (expr[0] != "function" && needs_parens(expr))
+                out = "(" + out + ")";
+            while (i < arguments.length)
+                out += "." + make_name(arguments[i++]);
+            return out;
+        },
+        "call": function(func, args) {
+            var f = make(func);
+            if (f.charAt(0) != "(" && needs_parens(func))
+                f = "(" + f + ")";
+            return f + "(" + add_commas(MAP(args, function(expr){
+                return parenthesize(expr, "seq");
+            })) + ")";
+        },
+        "function": make_function,
+        "defun": make_function,
+        "if": function(co, th, el) {
+            var out = [ "if", "(" + make(co) + ")", el ? make_then(th) : make(th) ];
+            if (el) {
+                out.push("else", make(el));
+            }
+            return add_spaces(out);
+        },
+        "for": function(init, cond, step, block) {
+            var out = [ "for" ];
+            init = (init != null ? make(init) : "").replace(/;*\s*$/, ";" + space);
+            cond = (cond != null ? make(cond) : "").replace(/;*\s*$/, ";" + space);
+            step = (step != null ? make(step) : "").replace(/;*\s*$/, "");
+            var args = init + cond + step;
+            if (args == "; ; ") args = ";;";
+            out.push("(" + args + ")", make(block));
+            return add_spaces(out);
+        },
+        "for-in": function(vvar, key, hash, block) {
+            return add_spaces([ "for", "(" +
+                                (vvar ? make(vvar).replace(/;+$/, "") : make(key)),
+                                "in",
+                                make(hash) + ")", make(block) ]);
+        },
+        "while": function(condition, block) {
+            return add_spaces([ "while", "(" + make(condition) + ")", make(block) ]);
+        },
+        "do": function(condition, block) {
+            return add_spaces([ "do", make(block), "while", "(" + make(condition) + ")" ]) + ";";
+        },
+        "return": function(expr) {
+            var out = [ "return" ];
+            if (expr != null) out.push(make(expr));
+            return add_spaces(out) + ";";
+        },
+        "binary": function(operator, lvalue, rvalue) {
+            var left = make(lvalue), right = make(rvalue);
+            // XXX: I'm pretty sure other cases will bite here.
+            //      we need to be smarter.
+            //      adding parens all the time is the safest bet.
+            if (member(lvalue[0], [ "assign", "conditional", "seq" ]) ||
+                lvalue[0] == "binary" && PRECEDENCE[operator] > PRECEDENCE[lvalue[1]] ||
+                lvalue[0] == "function" && needs_parens(this)) {
+                left = "(" + left + ")";
+            }
+            if (member(rvalue[0], [ "assign", "conditional", "seq" ]) ||
+                rvalue[0] == "binary" && PRECEDENCE[operator] >= PRECEDENCE[rvalue[1]] &&
+                !(rvalue[1] == operator && member(operator, [ "&&", "||", "*" ]))) {
+                right = "(" + right + ")";
+            }
+            else if (!beautify && options.inline_script && (operator == "<" || operator == "<<")
+                     && rvalue[0] == "regexp" && /^script/i.test(rvalue[1])) {
+                right = " " + right;
+            }
+            return add_spaces([ left, operator, right ]);
+        },
+        "unary-prefix": function(operator, expr) {
+            var val = make(expr);
+            if (!(expr[0] == "num" || (expr[0] == "unary-prefix" && !HOP(OPERATORS, operator + expr[1])) || !needs_parens(expr)))
+                val = "(" + val + ")";
+            return operator + (jsp.is_alphanumeric_char(operator.charAt(0)) ? " " : "") + val;
+        },
+        "unary-postfix": function(operator, expr) {
+            var val = make(expr);
+            if (!(expr[0] == "num" || (expr[0] == "unary-postfix" && !HOP(OPERATORS, operator + expr[1])) || !needs_parens(expr)))
+                val = "(" + val + ")";
+            return val + operator;
+        },
+        "sub": function(expr, subscript) {
+            var hash = make(expr);
+            if (needs_parens(expr))
+                hash = "(" + hash + ")";
+            return hash + "[" + make(subscript) + "]";
+        },
+        "object": function(props) {
+            var obj_needs_parens = needs_parens(this);
+            if (props.length == 0)
+                return obj_needs_parens ? "({})" : "{}";
+            var out = "{" + newline + with_indent(function(){
+                return MAP(props, function(p){
+                    if (p.length == 3) {
+                        // getter/setter.  The name is in p[0], the arg.list in p[1][2], the
+                        // body in p[1][3] and type ("get" / "set") in p[2].
+                        return indent(make_function(p[0], p[1][2], p[1][3], p[2], true));
+                    }
+                    var key = p[0], val = parenthesize(p[1], "seq");
+                    if (options.quote_keys) {
+                        key = encode_string(key);
+                    } else if ((typeof key == "number" || !beautify && +key + "" == key)
+                               && parseFloat(key) >= 0) {
+                        key = make_num(+key);
+                    } else if (!is_identifier(key)) {
+                        key = encode_string(key);
+                    }
+                    return indent(add_spaces(beautify && options.space_colon
+                                             ? [ key, ":", val ]
+                                             : [ key + ":", val ]));
+                }).join("," + newline);
+            }) + newline + indent("}");
+            return obj_needs_parens ? "(" + out + ")" : out;
+        },
+        "regexp": function(rx, mods) {
+            if (options.ascii_only) rx = to_ascii(rx);
+            return "/" + rx + "/" + mods;
+        },
+        "array": function(elements) {
+            if (elements.length == 0) return "[]";
+            return add_spaces([ "[", add_commas(MAP(elements, function(el, i){
+                if (!beautify && el[0] == "atom" && el[1] == "undefined") return i === elements.length - 1 ? "," : "";
+                return parenthesize(el, "seq");
+            })), "]" ]);
+        },
+        "stat": function(stmt) {
+            return stmt != null
+                ? make(stmt).replace(/;*\s*$/, ";")
+                : ";";
+        },
+        "seq": function() {
+            return add_commas(MAP(slice(arguments), make));
+        },
+        "label": function(name, block) {
+            return add_spaces([ make_name(name), ":", make(block) ]);
+        },
+        "with": function(expr, block) {
+            return add_spaces([ "with", "(" + make(expr) + ")", make(block) ]);
+        },
+        "atom": function(name) {
+            return make_name(name);
+        },
+        "directive": function(dir) {
+            return make_string(dir) + ";";
+        }
+    }, function(){ return make(ast) });
+
+    // The squeezer replaces "block"-s that contain only a single
+    // statement with the statement itself; technically, the AST
+    // is correct, but this can create problems when we output an
+    // IF having an ELSE clause where the THEN clause ends in an
+    // IF *without* an ELSE block (then the outer ELSE would refer
+    // to the inner IF).  This function checks for this case and
+    // adds the block brackets if needed.
+    function make_then(th) {
+        if (th == null) return ";";
+        if (th[0] == "do") {
+            // https://github.com/mishoo/UglifyJS/issues/#issue/57
+            // IE croaks with "syntax error" on code like this:
+            //     if (foo) do ... while(cond); else ...
+            // we need block brackets around do/while
+            return make_block([ th ]);
+        }
+        var b = th;
+        while (true) {
+            var type = b[0];
+            if (type == "if") {
+                if (!b[3])
+                    // no else, we must add the block
+                    return make([ "block", [ th ]]);
+                b = b[3];
+            }
+            else if (type == "while" || type == "do") b = b[2];
+            else if (type == "for" || type == "for-in") b = b[4];
+            else break;
+        }
+        return make(th);
+    };
+
+    function make_function(name, args, body, keyword, no_parens) {
+        var out = keyword || "function";
+        if (name) {
+            out += " " + make_name(name);
+        }
+        out += "(" + add_commas(MAP(args, make_name)) + ")";
+        out = add_spaces([ out, make_block(body) ]);
+        return (!no_parens && needs_parens(this)) ? "(" + out + ")" : out;
+    };
+
+    function must_has_semicolon(node) {
+        switch (node[0]) {
+          case "with":
+          case "while":
+            return empty(node[2]) || must_has_semicolon(node[2]);
+          case "for":
+          case "for-in":
+            return empty(node[4]) || must_has_semicolon(node[4]);
+          case "if":
+            if (empty(node[2]) && !node[3]) return true; // `if' with empty `then' and no `else'
+            if (node[3]) {
+                if (empty(node[3])) return true; // `else' present but empty
+                return must_has_semicolon(node[3]); // dive into the `else' branch
+            }
+            return must_has_semicolon(node[2]); // dive into the `then' branch
+          case "directive":
+            return true;
+        }
+    };
+
+    function make_block_statements(statements, noindent) {
+        for (var a = [], last = statements.length - 1, i = 0; i <= last; ++i) {
+            var stat = statements[i];
+            var code = make(stat);
+            if (code != ";") {
+                if (!beautify && i == last && !must_has_semicolon(stat)) {
+                    code = code.replace(/;+\s*$/, "");
+                }
+                a.push(code);
+            }
+        }
+        return noindent ? a : MAP(a, indent);
+    };
+
+    function make_switch_block(body) {
+        var n = body.length;
+        if (n == 0) return "{}";
+        return "{" + newline + MAP(body, function(branch, i){
+            var has_body = branch[1].length > 0, code = with_indent(function(){
+                return indent(branch[0]
+                              ? add_spaces([ "case", make(branch[0]) + ":" ])
+                              : "default:");
+            }, 0.5) + (has_body ? newline + with_indent(function(){
+                return make_block_statements(branch[1]).join(newline);
+            }) : "");
+            if (!beautify && has_body && i < n - 1)
+                code += ";";
+            return code;
+        }).join(newline) + newline + indent("}");
+    };
+
+    function make_block(statements) {
+        if (!statements) return ";";
+        if (statements.length == 0) return "{}";
+        return "{" + newline + with_indent(function(){
+            return make_block_statements(statements).join(newline);
+        }) + newline + indent("}");
+    };
+
+    function make_1vardef(def) {
+        var name = def[0], val = def[1];
+        if (val != null)
+            name = add_spaces([ make_name(name), "=", parenthesize(val, "seq") ]);
+        return name;
+    };
+
+};
+
+function split_lines(code, max_line_length) {
+    var splits = [ 0 ];
+    jsp.parse(function(){
+        var next_token = jsp.tokenizer(code);
+        var last_split = 0;
+        var prev_token;
+        function current_length(tok) {
+            return tok.pos - last_split;
+        };
+        function split_here(tok) {
+            last_split = tok.pos;
+            splits.push(last_split);
+        };
+        function custom(){
+            var tok = next_token.apply(this, arguments);
+            out: {
+                if (prev_token) {
+                    if (prev_token.type == "keyword") break out;
+                }
+                if (current_length(tok) > max_line_length) {
+                    switch (tok.type) {
+                      case "keyword":
+                      case "atom":
+                      case "name":
+                      case "punc":
+                        split_here(tok);
+                        break out;
+                    }
+                }
+            }
+            prev_token = tok;
+            return tok;
+        };
+        custom.context = function() {
+            return next_token.context.apply(this, arguments);
+        };
+        return custom;
+    }());
+    return splits.map(function(pos, i){
+        return code.substring(pos, splits[i + 1] || code.length);
+    }).join("\n");
+};
+
+/* -----[ Utilities ]----- */
+
+function repeat_string(str, i) {
+    if (i <= 0) return "";
+    if (i == 1) return str;
+    var d = repeat_string(str, i >> 1);
+    d += d;
+    if (i & 1) d += str;
+    return d;
+};
+
+function defaults(args, defs) {
+    var ret = {};
+    if (args === true)
+        args = {};
+    for (var i in defs) if (HOP(defs, i)) {
+        ret[i] = (args && HOP(args, i)) ? args[i] : defs[i];
+    }
+    return ret;
+};
+
+function is_identifier(name) {
+    return /^[a-z_$][a-z0-9_$]*$/i.test(name)
+        && name != "this"
+        && !HOP(jsp.KEYWORDS_ATOM, name)
+        && !HOP(jsp.RESERVED_WORDS, name)
+        && !HOP(jsp.KEYWORDS, name);
+};
+
+function HOP(obj, prop) {
+    return Object.prototype.hasOwnProperty.call(obj, prop);
+};
+
+// some utilities
+
+var MAP;
+
+(function(){
+    MAP = function(a, f, o) {
+        var ret = [], top = [], i;
+        function doit() {
+            var val = f.call(o, a[i], i);
+            if (val instanceof AtTop) {
+                val = val.v;
+                if (val instanceof Splice) {
+                    top.push.apply(top, val.v);
+                } else {
+                    top.push(val);
+                }
+            }
+            else if (val != skip) {
+                if (val instanceof Splice) {
+                    ret.push.apply(ret, val.v);
+                } else {
+                    ret.push(val);
+                }
+            }
+        };
+        if (a instanceof Array) for (i = 0; i < a.length; ++i) doit();
+        else for (i in a) if (HOP(a, i)) doit();
+        return top.concat(ret);
+    };
+    MAP.at_top = function(val) { return new AtTop(val) };
+    MAP.splice = function(val) { return new Splice(val) };
+    var skip = MAP.skip = {};
+    function AtTop(val) { this.v = val };
+    function Splice(val) { this.v = val };
+})();
+
+/* -----[ Exports ]----- */
+
+exports.ast_walker = ast_walker;
+exports.ast_mangle = ast_mangle;
+exports.ast_squeeze = ast_squeeze;
+exports.ast_lift_variables = ast_lift_variables;
+exports.gen_code = gen_code;
+exports.ast_add_scope = ast_add_scope;
+exports.set_logger = function(logger) { warn = logger };
+exports.make_string = make_string;
+exports.split_lines = split_lines;
+exports.MAP = MAP;
+
+// keep this last!
+exports.ast_squeeze_more = require("./squeeze-more").ast_squeeze_more;
+
+// Local variables:
+// js-indent-level: 4
+// End:
+});
+define('uglifyjs/index', ["require", "exports", "module", "./parse-js", "./process", "./consolidator"], function(require, exports, module) {
+//convienence function(src, [options]);
+function uglify(orig_code, options){
+  options || (options = {});
+  var jsp = uglify.parser;
+  var pro = uglify.uglify;
+
+  var ast = jsp.parse(orig_code, options.strict_semicolons); // parse code and get the initial AST
+  ast = pro.ast_mangle(ast, options.mangle_options); // get a new AST with mangled names
+  ast = pro.ast_squeeze(ast, options.squeeze_options); // get an AST with compression optimizations
+  var final_code = pro.gen_code(ast, options.gen_options); // compressed code here
+  return final_code;
+};
+
+uglify.parser = require("./parse-js");
+uglify.uglify = require("./process");
+uglify.consolidator = require("./consolidator");
+
+module.exports = uglify
+});/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+define('source-map/array-set', function (require, exports, module) {
+
+  var util = require('./util');
+
+  /**
+   * A data structure which is a combination of an array and a set. Adding a new
+   * member is O(1), testing for membership is O(1), and finding the index of an
+   * element is O(1). Removing elements from the set is not supported. Only
+   * strings are supported for membership.
+   */
+  function ArraySet() {
+    this._array = [];
+    this._set = {};
+  }
+
+  /**
+   * Static method for creating ArraySet instances from an existing array.
+   */
+  ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
+    var set = new ArraySet();
+    for (var i = 0, len = aArray.length; i < len; i++) {
+      set.add(aArray[i], aAllowDuplicates);
+    }
+    return set;
+  };
+
+  /**
+   * Add the given string to this set.
+   *
+   * @param String aStr
+   */
+  ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
+    var isDuplicate = this.has(aStr);
+    var idx = this._array.length;
+    if (!isDuplicate || aAllowDuplicates) {
+      this._array.push(aStr);
+    }
+    if (!isDuplicate) {
+      this._set[util.toSetString(aStr)] = idx;
+    }
+  };
+
+  /**
+   * Is the given string a member of this set?
+   *
+   * @param String aStr
+   */
+  ArraySet.prototype.has = function ArraySet_has(aStr) {
+    return Object.prototype.hasOwnProperty.call(this._set,
+                                                util.toSetString(aStr));
+  };
+
+  /**
+   * What is the index of the given string in the array?
+   *
+   * @param String aStr
+   */
+  ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
+    if (this.has(aStr)) {
+      return this._set[util.toSetString(aStr)];
+    }
+    throw new Error('"' + aStr + '" is not in the set.');
+  };
+
+  /**
+   * What is the element at the given index?
+   *
+   * @param Number aIdx
+   */
+  ArraySet.prototype.at = function ArraySet_at(aIdx) {
+    if (aIdx >= 0 && aIdx < this._array.length) {
+      return this._array[aIdx];
+    }
+    throw new Error('No element indexed by ' + aIdx);
+  };
+
+  /**
+   * Returns the array representation of this set (which has the proper indices
+   * indicated by indexOf). Note that this is a copy of the internal array used
+   * for storing the members so that no one can mess with internal state.
+   */
+  ArraySet.prototype.toArray = function ArraySet_toArray() {
+    return this._array.slice();
+  };
+
+  exports.ArraySet = ArraySet;
+
+});
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ *
+ * Based on the Base 64 VLQ implementation in Closure Compiler:
+ * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
+ *
+ * Copyright 2011 The Closure Compiler Authors. All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ *  * Neither the name of Google Inc. nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+define('source-map/base64-vlq', function (require, exports, module) {
+
+  var base64 = require('./base64');
+
+  // A single base 64 digit can contain 6 bits of data. For the base 64 variable
+  // length quantities we use in the source map spec, the first bit is the sign,
+  // the next four bits are the actual value, and the 6th bit is the
+  // continuation bit. The continuation bit tells us whether there are more
+  // digits in this value following this digit.
+  //
+  //   Continuation
+  //   |    Sign
+  //   |    |
+  //   V    V
+  //   101011
+
+  var VLQ_BASE_SHIFT = 5;
+
+  // binary: 100000
+  var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
+
+  // binary: 011111
+  var VLQ_BASE_MASK = VLQ_BASE - 1;
+
+  // binary: 100000
+  var VLQ_CONTINUATION_BIT = VLQ_BASE;
+
+  /**
+   * Converts from a two-complement value to a value where the sign bit is
+   * is placed in the least significant bit.  For example, as decimals:
+   *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
+   *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
+   */
+  function toVLQSigned(aValue) {
+    return aValue < 0
+      ? ((-aValue) << 1) + 1
+      : (aValue << 1) + 0;
+  }
+
+  /**
+   * Converts to a two-complement value from a value where the sign bit is
+   * is placed in the least significant bit.  For example, as decimals:
+   *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
+   *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
+   */
+  function fromVLQSigned(aValue) {
+    var isNegative = (aValue & 1) === 1;
+    var shifted = aValue >> 1;
+    return isNegative
+      ? -shifted
+      : shifted;
+  }
+
+  /**
+   * Returns the base 64 VLQ encoded value.
+   */
+  exports.encode = function base64VLQ_encode(aValue) {
+    var encoded = "";
+    var digit;
+
+    var vlq = toVLQSigned(aValue);
+
+    do {
+      digit = vlq & VLQ_BASE_MASK;
+      vlq >>>= VLQ_BASE_SHIFT;
+      if (vlq > 0) {
+        // There are still more digits in this value, so we must make sure the
+        // continuation bit is marked.
+        digit |= VLQ_CONTINUATION_BIT;
+      }
+      encoded += base64.encode(digit);
+    } while (vlq > 0);
+
+    return encoded;
+  };
+
+  /**
+   * Decodes the next base 64 VLQ value from the given string and returns the
+   * value and the rest of the string.
+   */
+  exports.decode = function base64VLQ_decode(aStr) {
+    var i = 0;
+    var strLen = aStr.length;
+    var result = 0;
+    var shift = 0;
+    var continuation, digit;
+
+    do {
+      if (i >= strLen) {
+        throw new Error("Expected more digits in base 64 VLQ value.");
+      }
+      digit = base64.decode(aStr.charAt(i++));
+      continuation = !!(digit & VLQ_CONTINUATION_BIT);
+      digit &= VLQ_BASE_MASK;
+      result = result + (digit << shift);
+      shift += VLQ_BASE_SHIFT;
+    } while (continuation);
+
+    return {
+      value: fromVLQSigned(result),
+      rest: aStr.slice(i)
+    };
+  };
+
+});
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+define('source-map/base64', function (require, exports, module) {
+
+  var charToIntMap = {};
+  var intToCharMap = {};
+
+  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+    .split('')
+    .forEach(function (ch, index) {
+      charToIntMap[ch] = index;
+      intToCharMap[index] = ch;
+    });
+
+  /**
+   * Encode an integer in the range of 0 to 63 to a single base 64 digit.
+   */
+  exports.encode = function base64_encode(aNumber) {
+    if (aNumber in intToCharMap) {
+      return intToCharMap[aNumber];
+    }
+    throw new TypeError("Must be between 0 and 63: " + aNumber);
+  };
+
+  /**
+   * Decode a single base 64 digit to an integer.
+   */
+  exports.decode = function base64_decode(aChar) {
+    if (aChar in charToIntMap) {
+      return charToIntMap[aChar];
+    }
+    throw new TypeError("Not a valid base 64 digit: " + aChar);
+  };
+
+});
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+define('source-map/binary-search', function (require, exports, module) {
+
+  /**
+   * Recursive implementation of binary search.
+   *
+   * @param aLow Indices here and lower do not contain the needle.
+   * @param aHigh Indices here and higher do not contain the needle.
+   * @param aNeedle The element being searched for.
+   * @param aHaystack The non-empty array being searched.
+   * @param aCompare Function which takes two elements and returns -1, 0, or 1.
+   */
+  function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare) {
+    // This function terminates when one of the following is true:
+    //
+    //   1. We find the exact element we are looking for.
+    //
+    //   2. We did not find the exact element, but we can return the next
+    //      closest element that is less than that element.
+    //
+    //   3. We did not find the exact element, and there is no next-closest
+    //      element which is less than the one we are searching for, so we
+    //      return null.
+    var mid = Math.floor((aHigh - aLow) / 2) + aLow;
+    var cmp = aCompare(aNeedle, aHaystack[mid], true);
+    if (cmp === 0) {
+      // Found the element we are looking for.
+      return aHaystack[mid];
+    }
+    else if (cmp > 0) {
+      // aHaystack[mid] is greater than our needle.
+      if (aHigh - mid > 1) {
+        // The element is in the upper half.
+        return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare);
+      }
+      // We did not find an exact match, return the next closest one
+      // (termination case 2).
+      return aHaystack[mid];
+    }
+    else {
+      // aHaystack[mid] is less than our needle.
+      if (mid - aLow > 1) {
+        // The element is in the lower half.
+        return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare);
+      }
+      // The exact needle element was not found in this haystack. Determine if
+      // we are in termination case (2) or (3) and return the appropriate thing.
+      return aLow < 0
+        ? null
+        : aHaystack[aLow];
+    }
+  }
+
+  /**
+   * This is an implementation of binary search which will always try and return
+   * the next lowest value checked if there is no exact hit. This is because
+   * mappings between original and generated line/col pairs are single points,
+   * and there is an implicit region between each of them, so a miss just means
+   * that you aren't on the very start of a region.
+   *
+   * @param aNeedle The element you are looking for.
+   * @param aHaystack The array that is being searched.
+   * @param aCompare A function which takes the needle and an element in the
+   *     array and returns -1, 0, or 1 depending on whether the needle is less
+   *     than, equal to, or greater than the element, respectively.
+   */
+  exports.search = function search(aNeedle, aHaystack, aCompare) {
+    return aHaystack.length > 0
+      ? recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack, aCompare)
+      : null;
+  };
+
+});
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+define('source-map/source-map-consumer', function (require, exports, module) {
+
+  var util = require('./util');
+  var binarySearch = require('./binary-search');
+  var ArraySet = require('./array-set').ArraySet;
+  var base64VLQ = require('./base64-vlq');
+
+  /**
+   * A SourceMapConsumer instance represents a parsed source map which we can
+   * query for information about the original file positions by giving it a file
+   * position in the generated source.
+   *
+   * The only parameter is the raw source map (either as a JSON string, or
+   * already parsed to an object). According to the spec, source maps have the
+   * following attributes:
+   *
+   *   - version: Which version of the source map spec this map is following.
+   *   - sources: An array of URLs to the original source files.
+   *   - names: An array of identifiers which can be referrenced by individual mappings.
+   *   - sourceRoot: Optional. The URL root from which all sources are relative.
+   *   - sourcesContent: Optional. An array of contents of the original source files.
+   *   - mappings: A string of base64 VLQs which contain the actual mappings.
+   *   - file: The generated file this source map is associated with.
+   *
+   * Here is an example source map, taken from the source map spec[0]:
+   *
+   *     {
+   *       version : 3,
+   *       file: "out.js",
+   *       sourceRoot : "",
+   *       sources: ["foo.js", "bar.js"],
+   *       names: ["src", "maps", "are", "fun"],
+   *       mappings: "AA,AB;;ABCDE;"
+   *     }
+   *
+   * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
+   */
+  function SourceMapConsumer(aSourceMap) {
+    var sourceMap = aSourceMap;
+    if (typeof aSourceMap === 'string') {
+      sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+    }
+
+    var version = util.getArg(sourceMap, 'version');
+    var sources = util.getArg(sourceMap, 'sources');
+    var names = util.getArg(sourceMap, 'names');
+    var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
+    var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
+    var mappings = util.getArg(sourceMap, 'mappings');
+    var file = util.getArg(sourceMap, 'file', null);
+
+    if (version !== this._version) {
+      throw new Error('Unsupported version: ' + version);
+    }
+
+    // Pass `true` below to allow duplicate names and sources. While source maps
+    // are intended to be compressed and deduplicated, the TypeScript compiler
+    // sometimes generates source maps with duplicates in them. See Github issue
+    // #72 and bugzil.la/889492.
+    this._names = ArraySet.fromArray(names, true);
+    this._sources = ArraySet.fromArray(sources, true);
+    this.sourceRoot = sourceRoot;
+    this.sourcesContent = sourcesContent;
+    this.file = file;
+
+    // `this._generatedMappings` and `this._originalMappings` hold the parsed
+    // mapping coordinates from the source map's "mappings" attribute. Each
+    // object in the array is of the form
+    //
+    //     {
+    //       generatedLine: The line number in the generated code,
+    //       generatedColumn: The column number in the generated code,
+    //       source: The path to the original source file that generated this
+    //               chunk of code,
+    //       originalLine: The line number in the original source that
+    //                     corresponds to this chunk of generated code,
+    //       originalColumn: The column number in the original source that
+    //                       corresponds to this chunk of generated code,
+    //       name: The name of the original symbol which generated this chunk of
+    //             code.
+    //     }
+    //
+    // All properties except for `generatedLine` and `generatedColumn` can be
+    // `null`.
+    //
+    // `this._generatedMappings` is ordered by the generated positions.
+    //
+    // `this._originalMappings` is ordered by the original positions.
+    this._generatedMappings = [];
+    this._originalMappings = [];
+    this._parseMappings(mappings, sourceRoot);
+  }
+
+  /**
+   * Create a SourceMapConsumer from a SourceMapGenerator.
+   *
+   * @param SourceMapGenerator aSourceMap
+   *        The source map that will be consumed.
+   * @returns SourceMapConsumer
+   */
+  SourceMapConsumer.fromSourceMap =
+    function SourceMapConsumer_fromSourceMap(aSourceMap) {
+      var smc = Object.create(SourceMapConsumer.prototype);
+
+      smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
+      smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
+      smc.sourceRoot = aSourceMap._sourceRoot;
+      smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
+                                                              smc.sourceRoot);
+      smc.file = aSourceMap._file;
+
+      smc._generatedMappings = aSourceMap._mappings.slice()
+        .sort(util.compareByGeneratedPositions);
+      smc._originalMappings = aSourceMap._mappings.slice()
+        .sort(util.compareByOriginalPositions);
+
+      return smc;
+    };
+
+  /**
+   * The version of the source mapping spec that we are consuming.
+   */
+  SourceMapConsumer.prototype._version = 3;
+
+  /**
+   * The list of original sources.
+   */
+  Object.defineProperty(SourceMapConsumer.prototype, 'sources', {
+    get: function () {
+      return this._sources.toArray().map(function (s) {
+        return this.sourceRoot ? util.join(this.sourceRoot, s) : s;
+      }, this);
+    }
+  });
+
+  /**
+   * Parse the mappings in a string in to a data structure which we can easily
+   * query (an ordered list in this._generatedMappings).
+   */
+  SourceMapConsumer.prototype._parseMappings =
+    function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+      var generatedLine = 1;
+      var previousGeneratedColumn = 0;
+      var previousOriginalLine = 0;
+      var previousOriginalColumn = 0;
+      var previousSource = 0;
+      var previousName = 0;
+      var mappingSeparator = /^[,;]/;
+      var str = aStr;
+      var mapping;
+      var temp;
+
+      while (str.length > 0) {
+        if (str.charAt(0) === ';') {
+          generatedLine++;
+          str = str.slice(1);
+          previousGeneratedColumn = 0;
+        }
+        else if (str.charAt(0) === ',') {
+          str = str.slice(1);
+        }
+        else {
+          mapping = {};
+          mapping.generatedLine = generatedLine;
+
+          // Generated column.
+          temp = base64VLQ.decode(str);
+          mapping.generatedColumn = previousGeneratedColumn + temp.value;
+          previousGeneratedColumn = mapping.generatedColumn;
+          str = temp.rest;
+
+          if (str.length > 0 && !mappingSeparator.test(str.charAt(0))) {
+            // Original source.
+            temp = base64VLQ.decode(str);
+            mapping.source = this._sources.at(previousSource + temp.value);
+            previousSource += temp.value;
+            str = temp.rest;
+            if (str.length === 0 || mappingSeparator.test(str.charAt(0))) {
+              throw new Error('Found a source, but no line and column');
+            }
+
+            // Original line.
+            temp = base64VLQ.decode(str);
+            mapping.originalLine = previousOriginalLine + temp.value;
+            previousOriginalLine = mapping.originalLine;
+            // Lines are stored 0-based
+            mapping.originalLine += 1;
+            str = temp.rest;
+            if (str.length === 0 || mappingSeparator.test(str.charAt(0))) {
+              throw new Error('Found a source and line, but no column');
+            }
+
+            // Original column.
+            temp = base64VLQ.decode(str);
+            mapping.originalColumn = previousOriginalColumn + temp.value;
+            previousOriginalColumn = mapping.originalColumn;
+            str = temp.rest;
+
+            if (str.length > 0 && !mappingSeparator.test(str.charAt(0))) {
+              // Original name.
+              temp = base64VLQ.decode(str);
+              mapping.name = this._names.at(previousName + temp.value);
+              previousName += temp.value;
+              str = temp.rest;
+            }
+          }
+
+          this._generatedMappings.push(mapping);
+          if (typeof mapping.originalLine === 'number') {
+            this._originalMappings.push(mapping);
+          }
+        }
+      }
+
+      this._originalMappings.sort(util.compareByOriginalPositions);
+    };
+
+  /**
+   * Find the mapping that best matches the hypothetical "needle" mapping that
+   * we are searching for in the given "haystack" of mappings.
+   */
+  SourceMapConsumer.prototype._findMapping =
+    function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
+                                           aColumnName, aComparator) {
+      // To return the position we are searching for, we must first find the
+      // mapping for the given position and then return the opposite position it
+      // points to. Because the mappings are sorted, we can use binary search to
+      // find the best mapping.
+
+      if (aNeedle[aLineName] <= 0) {
+        throw new TypeError('Line must be greater than or equal to 1, got '
+                            + aNeedle[aLineName]);
+      }
+      if (aNeedle[aColumnName] < 0) {
+        throw new TypeError('Column must be greater than or equal to 0, got '
+                            + aNeedle[aColumnName]);
+      }
+
+      return binarySearch.search(aNeedle, aMappings, aComparator);
+    };
+
+  /**
+   * Returns the original source, line, and column information for the generated
+   * source's line and column positions provided. The only argument is an object
+   * with the following properties:
+   *
+   *   - line: The line number in the generated source.
+   *   - column: The column number in the generated source.
+   *
+   * and an object is returned with the following properties:
+   *
+   *   - source: The original source file, or null.
+   *   - line: The line number in the original source, or null.
+   *   - column: The column number in the original source, or null.
+   *   - name: The original identifier, or null.
+   */
+  SourceMapConsumer.prototype.originalPositionFor =
+    function SourceMapConsumer_originalPositionFor(aArgs) {
+      var needle = {
+        generatedLine: util.getArg(aArgs, 'line'),
+        generatedColumn: util.getArg(aArgs, 'column')
+      };
+
+      var mapping = this._findMapping(needle,
+                                      this._generatedMappings,
+                                      "generatedLine",
+                                      "generatedColumn",
+                                      util.compareByGeneratedPositions);
+
+      if (mapping) {
+        var source = util.getArg(mapping, 'source', null);
+        if (source && this.sourceRoot) {
+          source = util.join(this.sourceRoot, source);
+        }
+        return {
+          source: source,
+          line: util.getArg(mapping, 'originalLine', null),
+          column: util.getArg(mapping, 'originalColumn', null),
+          name: util.getArg(mapping, 'name', null)
+        };
+      }
+
+      return {
+        source: null,
+        line: null,
+        column: null,
+        name: null
+      };
+    };
+
+  /**
+   * Returns the original source content. The only argument is the url of the
+   * original source file. Returns null if no original source content is
+   * availible.
+   */
+  SourceMapConsumer.prototype.sourceContentFor =
+    function SourceMapConsumer_sourceContentFor(aSource) {
+      if (!this.sourcesContent) {
+        return null;
+      }
+
+      if (this.sourceRoot) {
+        aSource = util.relative(this.sourceRoot, aSource);
+      }
+
+      if (this._sources.has(aSource)) {
+        return this.sourcesContent[this._sources.indexOf(aSource)];
+      }
+
+      var url;
+      if (this.sourceRoot
+          && (url = util.urlParse(this.sourceRoot))) {
+        // XXX: file:// URIs and absolute paths lead to unexpected behavior for
+        // many users. We can help them out when they expect file:// URIs to
+        // behave like it would if they were running a local HTTP server. See
+        // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
+        var fileUriAbsPath = aSource.replace(/^file:\/\//, "");
+        if (url.scheme == "file"
+            && this._sources.has(fileUriAbsPath)) {
+          return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
+        }
+
+        if ((!url.path || url.path == "/")
+            && this._sources.has("/" + aSource)) {
+          return this.sourcesContent[this._sources.indexOf("/" + aSource)];
+        }
+      }
+
+      throw new Error('"' + aSource + '" is not in the SourceMap.');
+    };
+
+  /**
+   * Returns the generated line and column information for the original source,
+   * line, and column positions provided. The only argument is an object with
+   * the following properties:
+   *
+   *   - source: The filename of the original source.
+   *   - line: The line number in the original source.
+   *   - column: The column number in the original source.
+   *
+   * and an object is returned with the following properties:
+   *
+   *   - line: The line number in the generated source, or null.
+   *   - column: The column number in the generated source, or null.
+   */
+  SourceMapConsumer.prototype.generatedPositionFor =
+    function SourceMapConsumer_generatedPositionFor(aArgs) {
+      var needle = {
+        source: util.getArg(aArgs, 'source'),
+        originalLine: util.getArg(aArgs, 'line'),
+        originalColumn: util.getArg(aArgs, 'column')
+      };
+
+      if (this.sourceRoot) {
+        needle.source = util.relative(this.sourceRoot, needle.source);
+      }
+
+      var mapping = this._findMapping(needle,
+                                      this._originalMappings,
+                                      "originalLine",
+                                      "originalColumn",
+                                      util.compareByOriginalPositions);
+
+      if (mapping) {
+        return {
+          line: util.getArg(mapping, 'generatedLine', null),
+          column: util.getArg(mapping, 'generatedColumn', null)
+        };
+      }
+
+      return {
+        line: null,
+        column: null
+      };
+    };
+
+  SourceMapConsumer.GENERATED_ORDER = 1;
+  SourceMapConsumer.ORIGINAL_ORDER = 2;
+
+  /**
+   * Iterate over each mapping between an original source/line/column and a
+   * generated line/column in this source map.
+   *
+   * @param Function aCallback
+   *        The function that is called with each mapping.
+   * @param Object aContext
+   *        Optional. If specified, this object will be the value of `this` every
+   *        time that `aCallback` is called.
+   * @param aOrder
+   *        Either `SourceMapConsumer.GENERATED_ORDER` or
+   *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
+   *        iterate over the mappings sorted by the generated file's line/column
+   *        order or the original's source/line/column order, respectively. Defaults to
+   *        `SourceMapConsumer.GENERATED_ORDER`.
+   */
+  SourceMapConsumer.prototype.eachMapping =
+    function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
+      var context = aContext || null;
+      var order = aOrder || SourceMapConsumer.GENERATED_ORDER;
+
+      var mappings;
+      switch (order) {
+      case SourceMapConsumer.GENERATED_ORDER:
+        mappings = this._generatedMappings;
+        break;
+      case SourceMapConsumer.ORIGINAL_ORDER:
+        mappings = this._originalMappings;
+        break;
+      default:
+        throw new Error("Unknown order of iteration.");
+      }
+
+      var sourceRoot = this.sourceRoot;
+      mappings.map(function (mapping) {
+        var source = mapping.source;
+        if (source && sourceRoot) {
+          source = util.join(sourceRoot, source);
+        }
+        return {
+          source: source,
+          generatedLine: mapping.generatedLine,
+          generatedColumn: mapping.generatedColumn,
+          originalLine: mapping.originalLine,
+          originalColumn: mapping.originalColumn,
+          name: mapping.name
+        };
+      }).forEach(aCallback, context);
+    };
+
+  exports.SourceMapConsumer = SourceMapConsumer;
+
+});
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+define('source-map/source-map-generator', function (require, exports, module) {
+
+  var base64VLQ = require('./base64-vlq');
+  var util = require('./util');
+  var ArraySet = require('./array-set').ArraySet;
+
+  /**
+   * An instance of the SourceMapGenerator represents a source map which is
+   * being built incrementally. To create a new one, you must pass an object
+   * with the following properties:
+   *
+   *   - file: The filename of the generated source.
+   *   - sourceRoot: An optional root for all URLs in this source map.
+   */
+  function SourceMapGenerator(aArgs) {
+    this._file = util.getArg(aArgs, 'file');
+    this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
+    this._sources = new ArraySet();
+    this._names = new ArraySet();
+    this._mappings = [];
+    this._sourcesContents = null;
+  }
+
+  SourceMapGenerator.prototype._version = 3;
+
+  /**
+   * Creates a new SourceMapGenerator based on a SourceMapConsumer
+   *
+   * @param aSourceMapConsumer The SourceMap.
+   */
+  SourceMapGenerator.fromSourceMap =
+    function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
+      var sourceRoot = aSourceMapConsumer.sourceRoot;
+      var generator = new SourceMapGenerator({
+        file: aSourceMapConsumer.file,
+        sourceRoot: sourceRoot
+      });
+      aSourceMapConsumer.eachMapping(function (mapping) {
+        var newMapping = {
+          generated: {
+            line: mapping.generatedLine,
+            column: mapping.generatedColumn
+          }
+        };
+
+        if (mapping.source) {
+          newMapping.source = mapping.source;
+          if (sourceRoot) {
+            newMapping.source = util.relative(sourceRoot, newMapping.source);
+          }
+
+          newMapping.original = {
+            line: mapping.originalLine,
+            column: mapping.originalColumn
+          };
+
+          if (mapping.name) {
+            newMapping.name = mapping.name;
+          }
+        }
+
+        generator.addMapping(newMapping);
+      });
+      aSourceMapConsumer.sources.forEach(function (sourceFile) {
+        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+        if (content) {
+          generator.setSourceContent(sourceFile, content);
+        }
+      });
+      return generator;
+    };
+
+  /**
+   * Add a single mapping from original source line and column to the generated
+   * source's line and column for this source map being created. The mapping
+   * object should have the following properties:
+   *
+   *   - generated: An object with the generated line and column positions.
+   *   - original: An object with the original line and column positions.
+   *   - source: The original source file (relative to the sourceRoot).
+   *   - name: An optional original token name for this mapping.
+   */
+  SourceMapGenerator.prototype.addMapping =
+    function SourceMapGenerator_addMapping(aArgs) {
+      var generated = util.getArg(aArgs, 'generated');
+      var original = util.getArg(aArgs, 'original', null);
+      var source = util.getArg(aArgs, 'source', null);
+      var name = util.getArg(aArgs, 'name', null);
+
+      this._validateMapping(generated, original, source, name);
+
+      if (source && !this._sources.has(source)) {
+        this._sources.add(source);
+      }
+
+      if (name && !this._names.has(name)) {
+        this._names.add(name);
+      }
+
+      this._mappings.push({
+        generatedLine: generated.line,
+        generatedColumn: generated.column,
+        originalLine: original != null && original.line,
+        originalColumn: original != null && original.column,
+        source: source,
+        name: name
+      });
+    };
+
+  /**
+   * Set the source content for a source file.
+   */
+  SourceMapGenerator.prototype.setSourceContent =
+    function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
+      var source = aSourceFile;
+      if (this._sourceRoot) {
+        source = util.relative(this._sourceRoot, source);
+      }
+
+      if (aSourceContent !== null) {
+        // Add the source content to the _sourcesContents map.
+        // Create a new _sourcesContents map if the property is null.
+        if (!this._sourcesContents) {
+          this._sourcesContents = {};
+        }
+        this._sourcesContents[util.toSetString(source)] = aSourceContent;
+      } else {
+        // Remove the source file from the _sourcesContents map.
+        // If the _sourcesContents map is empty, set the property to null.
+        delete this._sourcesContents[util.toSetString(source)];
+        if (Object.keys(this._sourcesContents).length === 0) {
+          this._sourcesContents = null;
+        }
+      }
+    };
+
+  /**
+   * Applies the mappings of a sub-source-map for a specific source file to the
+   * source map being generated. Each mapping to the supplied source file is
+   * rewritten using the supplied source map. Note: The resolution for the
+   * resulting mappings is the minimium of this map and the supplied map.
+   *
+   * @param aSourceMapConsumer The source map to be applied.
+   * @param aSourceFile Optional. The filename of the source file.
+   *        If omitted, SourceMapConsumer's file property will be used.
+   */
+  SourceMapGenerator.prototype.applySourceMap =
+    function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile) {
+      // If aSourceFile is omitted, we will use the file property of the SourceMap
+      if (!aSourceFile) {
+        aSourceFile = aSourceMapConsumer.file;
+      }
+      var sourceRoot = this._sourceRoot;
+      // Make "aSourceFile" relative if an absolute Url is passed.
+      if (sourceRoot) {
+        aSourceFile = util.relative(sourceRoot, aSourceFile);
+      }
+      // Applying the SourceMap can add and remove items from the sources and
+      // the names array.
+      var newSources = new ArraySet();
+      var newNames = new ArraySet();
+
+      // Find mappings for the "aSourceFile"
+      this._mappings.forEach(function (mapping) {
+        if (mapping.source === aSourceFile && mapping.originalLine) {
+          // Check if it can be mapped by the source map, then update the mapping.
+          var original = aSourceMapConsumer.originalPositionFor({
+            line: mapping.originalLine,
+            column: mapping.originalColumn
+          });
+          if (original.source !== null) {
+            // Copy mapping
+            if (sourceRoot) {
+              mapping.source = util.relative(sourceRoot, original.source);
+            } else {
+              mapping.source = original.source;
+            }
+            mapping.originalLine = original.line;
+            mapping.originalColumn = original.column;
+            if (original.name !== null && mapping.name !== null) {
+              // Only use the identifier name if it's an identifier
+              // in both SourceMaps
+              mapping.name = original.name;
+            }
+          }
+        }
+
+        var source = mapping.source;
+        if (source && !newSources.has(source)) {
+          newSources.add(source);
+        }
+
+        var name = mapping.name;
+        if (name && !newNames.has(name)) {
+          newNames.add(name);
+        }
+
+      }, this);
+      this._sources = newSources;
+      this._names = newNames;
+
+      // Copy sourcesContents of applied map.
+      aSourceMapConsumer.sources.forEach(function (sourceFile) {
+        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+        if (content) {
+          if (sourceRoot) {
+            sourceFile = util.relative(sourceRoot, sourceFile);
+          }
+          this.setSourceContent(sourceFile, content);
+        }
+      }, this);
+    };
+
+  /**
+   * A mapping can have one of the three levels of data:
+   *
+   *   1. Just the generated position.
+   *   2. The Generated position, original position, and original source.
+   *   3. Generated and original position, original source, as well as a name
+   *      token.
+   *
+   * To maintain consistency, we validate that any new mapping being added falls
+   * in to one of these categories.
+   */
+  SourceMapGenerator.prototype._validateMapping =
+    function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
+                                                aName) {
+      if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+          && aGenerated.line > 0 && aGenerated.column >= 0
+          && !aOriginal && !aSource && !aName) {
+        // Case 1.
+        return;
+      }
+      else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+               && aOriginal && 'line' in aOriginal && 'column' in aOriginal
+               && aGenerated.line > 0 && aGenerated.column >= 0
+               && aOriginal.line > 0 && aOriginal.column >= 0
+               && aSource) {
+        // Cases 2 and 3.
+        return;
+      }
+      else {
+        throw new Error('Invalid mapping: ' + JSON.stringify({
+          generated: aGenerated,
+          source: aSource,
+          orginal: aOriginal,
+          name: aName
+        }));
+      }
+    };
+
+  /**
+   * Serialize the accumulated mappings in to the stream of base 64 VLQs
+   * specified by the source map format.
+   */
+  SourceMapGenerator.prototype._serializeMappings =
+    function SourceMapGenerator_serializeMappings() {
+      var previousGeneratedColumn = 0;
+      var previousGeneratedLine = 1;
+      var previousOriginalColumn = 0;
+      var previousOriginalLine = 0;
+      var previousName = 0;
+      var previousSource = 0;
+      var result = '';
+      var mapping;
+
+      // The mappings must be guaranteed to be in sorted order before we start
+      // serializing them or else the generated line numbers (which are defined
+      // via the ';' separators) will be all messed up. Note: it might be more
+      // performant to maintain the sorting as we insert them, rather than as we
+      // serialize them, but the big O is the same either way.
+      this._mappings.sort(util.compareByGeneratedPositions);
+
+      for (var i = 0, len = this._mappings.length; i < len; i++) {
+        mapping = this._mappings[i];
+
+        if (mapping.generatedLine !== previousGeneratedLine) {
+          previousGeneratedColumn = 0;
+          while (mapping.generatedLine !== previousGeneratedLine) {
+            result += ';';
+            previousGeneratedLine++;
+          }
+        }
+        else {
+          if (i > 0) {
+            if (!util.compareByGeneratedPositions(mapping, this._mappings[i - 1])) {
+              continue;
+            }
+            result += ',';
+          }
+        }
+
+        result += base64VLQ.encode(mapping.generatedColumn
+                                   - previousGeneratedColumn);
+        previousGeneratedColumn = mapping.generatedColumn;
+
+        if (mapping.source) {
+          result += base64VLQ.encode(this._sources.indexOf(mapping.source)
+                                     - previousSource);
+          previousSource = this._sources.indexOf(mapping.source);
+
+          // lines are stored 0-based in SourceMap spec version 3
+          result += base64VLQ.encode(mapping.originalLine - 1
+                                     - previousOriginalLine);
+          previousOriginalLine = mapping.originalLine - 1;
+
+          result += base64VLQ.encode(mapping.originalColumn
+                                     - previousOriginalColumn);
+          previousOriginalColumn = mapping.originalColumn;
+
+          if (mapping.name) {
+            result += base64VLQ.encode(this._names.indexOf(mapping.name)
+                                       - previousName);
+            previousName = this._names.indexOf(mapping.name);
+          }
+        }
+      }
+
+      return result;
+    };
+
+  SourceMapGenerator.prototype._generateSourcesContent =
+    function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
+      return aSources.map(function (source) {
+        if (!this._sourcesContents) {
+          return null;
+        }
+        if (aSourceRoot) {
+          source = util.relative(aSourceRoot, source);
+        }
+        var key = util.toSetString(source);
+        return Object.prototype.hasOwnProperty.call(this._sourcesContents,
+                                                    key)
+          ? this._sourcesContents[key]
+          : null;
+      }, this);
+    };
+
+  /**
+   * Externalize the source map.
+   */
+  SourceMapGenerator.prototype.toJSON =
+    function SourceMapGenerator_toJSON() {
+      var map = {
+        version: this._version,
+        file: this._file,
+        sources: this._sources.toArray(),
+        names: this._names.toArray(),
+        mappings: this._serializeMappings()
+      };
+      if (this._sourceRoot) {
+        map.sourceRoot = this._sourceRoot;
+      }
+      if (this._sourcesContents) {
+        map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
+      }
+
+      return map;
+    };
+
+  /**
+   * Render the source map being generated to a string.
+   */
+  SourceMapGenerator.prototype.toString =
+    function SourceMapGenerator_toString() {
+      return JSON.stringify(this);
+    };
+
+  exports.SourceMapGenerator = SourceMapGenerator;
+
+});
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+define('source-map/source-node', function (require, exports, module) {
+
+  var SourceMapGenerator = require('./source-map-generator').SourceMapGenerator;
+  var util = require('./util');
+
+  /**
+   * SourceNodes provide a way to abstract over interpolating/concatenating
+   * snippets of generated JavaScript source code while maintaining the line and
+   * column information associated with the original source code.
+   *
+   * @param aLine The original line number.
+   * @param aColumn The original column number.
+   * @param aSource The original source's filename.
+   * @param aChunks Optional. An array of strings which are snippets of
+   *        generated JS, or other SourceNodes.
+   * @param aName The original identifier.
+   */
+  function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
+    this.children = [];
+    this.sourceContents = {};
+    this.line = aLine === undefined ? null : aLine;
+    this.column = aColumn === undefined ? null : aColumn;
+    this.source = aSource === undefined ? null : aSource;
+    this.name = aName === undefined ? null : aName;
+    if (aChunks != null) this.add(aChunks);
+  }
+
+  /**
+   * Creates a SourceNode from generated code and a SourceMapConsumer.
+   *
+   * @param aGeneratedCode The generated code
+   * @param aSourceMapConsumer The SourceMap for the generated code
+   */
+  SourceNode.fromStringWithSourceMap =
+    function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer) {
+      // The SourceNode we want to fill with the generated code
+      // and the SourceMap
+      var node = new SourceNode();
+
+      // The generated code
+      // Processed fragments are removed from this array.
+      var remainingLines = aGeneratedCode.split('\n');
+
+      // We need to remember the position of "remainingLines"
+      var lastGeneratedLine = 1, lastGeneratedColumn = 0;
+
+      // The generate SourceNodes we need a code range.
+      // To extract it current and last mapping is used.
+      // Here we store the last mapping.
+      var lastMapping = null;
+
+      aSourceMapConsumer.eachMapping(function (mapping) {
+        if (lastMapping === null) {
+          // We add the generated code until the first mapping
+          // to the SourceNode without any mapping.
+          // Each line is added as separate string.
+          while (lastGeneratedLine < mapping.generatedLine) {
+            node.add(remainingLines.shift() + "\n");
+            lastGeneratedLine++;
+          }
+          if (lastGeneratedColumn < mapping.generatedColumn) {
+            var nextLine = remainingLines[0];
+            node.add(nextLine.substr(0, mapping.generatedColumn));
+            remainingLines[0] = nextLine.substr(mapping.generatedColumn);
+            lastGeneratedColumn = mapping.generatedColumn;
+          }
+        } else {
+          // We add the code from "lastMapping" to "mapping":
+          // First check if there is a new line in between.
+          if (lastGeneratedLine < mapping.generatedLine) {
+            var code = "";
+            // Associate full lines with "lastMapping"
+            do {
+              code += remainingLines.shift() + "\n";
+              lastGeneratedLine++;
+              lastGeneratedColumn = 0;
+            } while (lastGeneratedLine < mapping.generatedLine);
+            // When we reached the correct line, we add code until we
+            // reach the correct column too.
+            if (lastGeneratedColumn < mapping.generatedColumn) {
+              var nextLine = remainingLines[0];
+              code += nextLine.substr(0, mapping.generatedColumn);
+              remainingLines[0] = nextLine.substr(mapping.generatedColumn);
+              lastGeneratedColumn = mapping.generatedColumn;
+            }
+            // Create the SourceNode.
+            addMappingWithCode(lastMapping, code);
+          } else {
+            // There is no new line in between.
+            // Associate the code between "lastGeneratedColumn" and
+            // "mapping.generatedColumn" with "lastMapping"
+            var nextLine = remainingLines[0];
+            var code = nextLine.substr(0, mapping.generatedColumn -
+                                          lastGeneratedColumn);
+            remainingLines[0] = nextLine.substr(mapping.generatedColumn -
+                                                lastGeneratedColumn);
+            lastGeneratedColumn = mapping.generatedColumn;
+            addMappingWithCode(lastMapping, code);
+          }
+        }
+        lastMapping = mapping;
+      }, this);
+      // We have processed all mappings.
+      // Associate the remaining code in the current line with "lastMapping"
+      // and add the remaining lines without any mapping
+      addMappingWithCode(lastMapping, remainingLines.join("\n"));
+
+      // Copy sourcesContent into SourceNode
+      aSourceMapConsumer.sources.forEach(function (sourceFile) {
+        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+        if (content) {
+          node.setSourceContent(sourceFile, content);
+        }
+      });
+
+      return node;
+
+      function addMappingWithCode(mapping, code) {
+        if (mapping === null || mapping.source === undefined) {
+          node.add(code);
+        } else {
+          node.add(new SourceNode(mapping.originalLine,
+                                  mapping.originalColumn,
+                                  mapping.source,
+                                  code,
+                                  mapping.name));
+        }
+      }
+    };
+
+  /**
+   * Add a chunk of generated JS to this source node.
+   *
+   * @param aChunk A string snippet of generated JS code, another instance of
+   *        SourceNode, or an array where each member is one of those things.
+   */
+  SourceNode.prototype.add = function SourceNode_add(aChunk) {
+    if (Array.isArray(aChunk)) {
+      aChunk.forEach(function (chunk) {
+        this.add(chunk);
+      }, this);
+    }
+    else if (aChunk instanceof SourceNode || typeof aChunk === "string") {
+      if (aChunk) {
+        this.children.push(aChunk);
+      }
+    }
+    else {
+      throw new TypeError(
+        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+      );
+    }
+    return this;
+  };
+
+  /**
+   * Add a chunk of generated JS to the beginning of this source node.
+   *
+   * @param aChunk A string snippet of generated JS code, another instance of
+   *        SourceNode, or an array where each member is one of those things.
+   */
+  SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
+    if (Array.isArray(aChunk)) {
+      for (var i = aChunk.length-1; i >= 0; i--) {
+        this.prepend(aChunk[i]);
+      }
+    }
+    else if (aChunk instanceof SourceNode || typeof aChunk === "string") {
+      this.children.unshift(aChunk);
+    }
+    else {
+      throw new TypeError(
+        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+      );
+    }
+    return this;
+  };
+
+  /**
+   * Walk over the tree of JS snippets in this node and its children. The
+   * walking function is called once for each snippet of JS and is passed that
+   * snippet and the its original associated source's line/column location.
+   *
+   * @param aFn The traversal function.
+   */
+  SourceNode.prototype.walk = function SourceNode_walk(aFn) {
+    var chunk;
+    for (var i = 0, len = this.children.length; i < len; i++) {
+      chunk = this.children[i];
+      if (chunk instanceof SourceNode) {
+        chunk.walk(aFn);
+      }
+      else {
+        if (chunk !== '') {
+          aFn(chunk, { source: this.source,
+                       line: this.line,
+                       column: this.column,
+                       name: this.name });
+        }
+      }
+    }
+  };
+
+  /**
+   * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
+   * each of `this.children`.
+   *
+   * @param aSep The separator.
+   */
+  SourceNode.prototype.join = function SourceNode_join(aSep) {
+    var newChildren;
+    var i;
+    var len = this.children.length;
+    if (len > 0) {
+      newChildren = [];
+      for (i = 0; i < len-1; i++) {
+        newChildren.push(this.children[i]);
+        newChildren.push(aSep);
+      }
+      newChildren.push(this.children[i]);
+      this.children = newChildren;
+    }
+    return this;
+  };
+
+  /**
+   * Call String.prototype.replace on the very right-most source snippet. Useful
+   * for trimming whitespace from the end of a source node, etc.
+   *
+   * @param aPattern The pattern to replace.
+   * @param aReplacement The thing to replace the pattern with.
+   */
+  SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
+    var lastChild = this.children[this.children.length - 1];
+    if (lastChild instanceof SourceNode) {
+      lastChild.replaceRight(aPattern, aReplacement);
+    }
+    else if (typeof lastChild === 'string') {
+      this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
+    }
+    else {
+      this.children.push(''.replace(aPattern, aReplacement));
+    }
+    return this;
+  };
+
+  /**
+   * Set the source content for a source file. This will be added to the SourceMapGenerator
+   * in the sourcesContent field.
+   *
+   * @param aSourceFile The filename of the source file
+   * @param aSourceContent The content of the source file
+   */
+  SourceNode.prototype.setSourceContent =
+    function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
+      this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
+    };
+
+  /**
+   * Walk over the tree of SourceNodes. The walking function is called for each
+   * source file content and is passed the filename and source content.
+   *
+   * @param aFn The traversal function.
+   */
+  SourceNode.prototype.walkSourceContents =
+    function SourceNode_walkSourceContents(aFn) {
+      for (var i = 0, len = this.children.length; i < len; i++) {
+        if (this.children[i] instanceof SourceNode) {
+          this.children[i].walkSourceContents(aFn);
+        }
+      }
+
+      var sources = Object.keys(this.sourceContents);
+      for (var i = 0, len = sources.length; i < len; i++) {
+        aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
+      }
+    };
+
+  /**
+   * Return the string representation of this source node. Walks over the tree
+   * and concatenates all the various snippets together to one string.
+   */
+  SourceNode.prototype.toString = function SourceNode_toString() {
+    var str = "";
+    this.walk(function (chunk) {
+      str += chunk;
+    });
+    return str;
+  };
+
+  /**
+   * Returns the string representation of this source node along with a source
+   * map.
+   */
+  SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
+    var generated = {
+      code: "",
+      line: 1,
+      column: 0
+    };
+    var map = new SourceMapGenerator(aArgs);
+    var sourceMappingActive = false;
+    var lastOriginalSource = null;
+    var lastOriginalLine = null;
+    var lastOriginalColumn = null;
+    var lastOriginalName = null;
+    this.walk(function (chunk, original) {
+      generated.code += chunk;
+      if (original.source !== null
+          && original.line !== null
+          && original.column !== null) {
+        if(lastOriginalSource !== original.source
+           || lastOriginalLine !== original.line
+           || lastOriginalColumn !== original.column
+           || lastOriginalName !== original.name) {
+          map.addMapping({
+            source: original.source,
+            original: {
+              line: original.line,
+              column: original.column
+            },
+            generated: {
+              line: generated.line,
+              column: generated.column
+            },
+            name: original.name
+          });
+        }
+        lastOriginalSource = original.source;
+        lastOriginalLine = original.line;
+        lastOriginalColumn = original.column;
+        lastOriginalName = original.name;
+        sourceMappingActive = true;
+      } else if (sourceMappingActive) {
+        map.addMapping({
+          generated: {
+            line: generated.line,
+            column: generated.column
+          }
+        });
+        lastOriginalSource = null;
+        sourceMappingActive = false;
+      }
+      chunk.split('').forEach(function (ch) {
+        if (ch === '\n') {
+          generated.line++;
+          generated.column = 0;
+        } else {
+          generated.column++;
+        }
+      });
+    });
+    this.walkSourceContents(function (sourceFile, sourceContent) {
+      map.setSourceContent(sourceFile, sourceContent);
+    });
+
+    return { code: generated.code, map: map };
+  };
+
+  exports.SourceNode = SourceNode;
+
+});
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+define('source-map/util', function (require, exports, module) {
+
+  /**
+   * This is a helper function for getting values from parameter/options
+   * objects.
+   *
+   * @param args The object we are extracting values from
+   * @param name The name of the property we are getting.
+   * @param defaultValue An optional value to return if the property is missing
+   * from the object. If this is not specified and the property is missing, an
+   * error will be thrown.
+   */
+  function getArg(aArgs, aName, aDefaultValue) {
+    if (aName in aArgs) {
+      return aArgs[aName];
+    } else if (arguments.length === 3) {
+      return aDefaultValue;
+    } else {
+      throw new Error('"' + aName + '" is a required argument.');
+    }
+  }
+  exports.getArg = getArg;
+
+  var urlRegexp = /([\w+\-.]+):\/\/((\w+:\w+)@)?([\w.]+)?(:(\d+))?(\S+)?/;
+  var dataUrlRegexp = /^data:.+\,.+/;
+
+  function urlParse(aUrl) {
+    var match = aUrl.match(urlRegexp);
+    if (!match) {
+      return null;
+    }
+    return {
+      scheme: match[1],
+      auth: match[3],
+      host: match[4],
+      port: match[6],
+      path: match[7]
+    };
+  }
+  exports.urlParse = urlParse;
+
+  function urlGenerate(aParsedUrl) {
+    var url = aParsedUrl.scheme + "://";
+    if (aParsedUrl.auth) {
+      url += aParsedUrl.auth + "@"
+    }
+    if (aParsedUrl.host) {
+      url += aParsedUrl.host;
+    }
+    if (aParsedUrl.port) {
+      url += ":" + aParsedUrl.port
+    }
+    if (aParsedUrl.path) {
+      url += aParsedUrl.path;
+    }
+    return url;
+  }
+  exports.urlGenerate = urlGenerate;
+
+  function join(aRoot, aPath) {
+    var url;
+
+    if (aPath.match(urlRegexp) || aPath.match(dataUrlRegexp)) {
+      return aPath;
+    }
+
+    if (aPath.charAt(0) === '/' && (url = urlParse(aRoot))) {
+      url.path = aPath;
+      return urlGenerate(url);
+    }
+
+    return aRoot.replace(/\/$/, '') + '/' + aPath;
+  }
+  exports.join = join;
+
+  /**
+   * Because behavior goes wacky when you set `__proto__` on objects, we
+   * have to prefix all the strings in our set with an arbitrary character.
+   *
+   * See https://github.com/mozilla/source-map/pull/31 and
+   * https://github.com/mozilla/source-map/issues/30
+   *
+   * @param String aStr
+   */
+  function toSetString(aStr) {
+    return '$' + aStr;
+  }
+  exports.toSetString = toSetString;
+
+  function fromSetString(aStr) {
+    return aStr.substr(1);
+  }
+  exports.fromSetString = fromSetString;
+
+  function relative(aRoot, aPath) {
+    aRoot = aRoot.replace(/\/$/, '');
+
+    var url = urlParse(aRoot);
+    if (aPath.charAt(0) == "/" && url && url.path == "/") {
+      return aPath.slice(1);
+    }
+
+    return aPath.indexOf(aRoot + '/') === 0
+      ? aPath.substr(aRoot.length + 1)
+      : aPath;
+  }
+  exports.relative = relative;
+
+  function strcmp(aStr1, aStr2) {
+    var s1 = aStr1 || "";
+    var s2 = aStr2 || "";
+    return (s1 > s2) - (s1 < s2);
+  }
+
+  /**
+   * Comparator between two mappings where the original positions are compared.
+   *
+   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+   * mappings with the same original source/line/column, but different generated
+   * line and column the same. Useful when searching for a mapping with a
+   * stubbed out mapping.
+   */
+  function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
+    var cmp;
+
+    cmp = strcmp(mappingA.source, mappingB.source);
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.originalLine - mappingB.originalLine;
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.originalColumn - mappingB.originalColumn;
+    if (cmp || onlyCompareOriginal) {
+      return cmp;
+    }
+
+    cmp = strcmp(mappingA.name, mappingB.name);
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.generatedLine - mappingB.generatedLine;
+    if (cmp) {
+      return cmp;
+    }
+
+    return mappingA.generatedColumn - mappingB.generatedColumn;
+  };
+  exports.compareByOriginalPositions = compareByOriginalPositions;
+
+  /**
+   * Comparator between two mappings where the generated positions are
+   * compared.
+   *
+   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+   * mappings with the same generated line and column, but different
+   * source/name/original line and column the same. Useful when searching for a
+   * mapping with a stubbed out mapping.
+   */
+  function compareByGeneratedPositions(mappingA, mappingB, onlyCompareGenerated) {
+    var cmp;
+
+    cmp = mappingA.generatedLine - mappingB.generatedLine;
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+    if (cmp || onlyCompareGenerated) {
+      return cmp;
+    }
+
+    cmp = strcmp(mappingA.source, mappingB.source);
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.originalLine - mappingB.originalLine;
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.originalColumn - mappingB.originalColumn;
+    if (cmp) {
+      return cmp;
+    }
+
+    return strcmp(mappingA.name, mappingB.name);
+  };
+  exports.compareByGeneratedPositions = compareByGeneratedPositions;
+
+});
+define('source-map', function (require, exports, module) {
+
+/*
+ * Copyright 2009-2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE.txt or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+exports.SourceMapGenerator = require('./source-map/source-map-generator').SourceMapGenerator;
+exports.SourceMapConsumer = require('./source-map/source-map-consumer').SourceMapConsumer;
+exports.SourceNode = require('./source-map/source-node').SourceNode;
+
+});
+
+//Distributed under the BSD license:
+//Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+define('uglifyjs2', ['exports', 'source-map', 'logger', 'env!env/file'], function (exports, MOZ_SourceMap, logger, rjsFile) {
+(function(exports, global) {
+    global["UglifyJS"] = exports;
+    "use strict";
+    function array_to_hash(a) {
+        var ret = Object.create(null);
+        for (var i = 0; i < a.length; ++i) ret[a[i]] = true;
+        return ret;
+    }
+    function slice(a, start) {
+        return Array.prototype.slice.call(a, start || 0);
+    }
+    function characters(str) {
+        return str.split("");
+    }
+    function member(name, array) {
+        for (var i = array.length; --i >= 0; ) if (array[i] == name) return true;
+        return false;
+    }
+    function find_if(func, array) {
+        for (var i = 0, n = array.length; i < n; ++i) {
+            if (func(array[i])) return array[i];
+        }
+    }
+    function repeat_string(str, i) {
+        if (i <= 0) return "";
+        if (i == 1) return str;
+        var d = repeat_string(str, i >> 1);
+        d += d;
+        if (i & 1) d += str;
+        return d;
+    }
+    function DefaultsError(msg, defs) {
+        this.msg = msg;
+        this.defs = defs;
+    }
+    function defaults(args, defs, croak) {
+        if (args === true) args = {};
+        var ret = args || {};
+        if (croak) for (var i in ret) if (ret.hasOwnProperty(i) && !defs.hasOwnProperty(i)) throw new DefaultsError("`" + i + "` is not a supported option", defs);
+        for (var i in defs) if (defs.hasOwnProperty(i)) {
+            ret[i] = args && args.hasOwnProperty(i) ? args[i] : defs[i];
+        }
+        return ret;
+    }
+    function merge(obj, ext) {
+        for (var i in ext) if (ext.hasOwnProperty(i)) {
+            obj[i] = ext[i];
+        }
+        return obj;
+    }
+    function noop() {}
+    var MAP = function() {
+        function MAP(a, f, backwards) {
+            var ret = [], top = [], i;
+            function doit() {
+                var val = f(a[i], i);
+                var is_last = val instanceof Last;
+                if (is_last) val = val.v;
+                if (val instanceof AtTop) {
+                    val = val.v;
+                    if (val instanceof Splice) {
+                        top.push.apply(top, backwards ? val.v.slice().reverse() : val.v);
+                    } else {
+                        top.push(val);
+                    }
+                } else if (val !== skip) {
+                    if (val instanceof Splice) {
+                        ret.push.apply(ret, backwards ? val.v.slice().reverse() : val.v);
+                    } else {
+                        ret.push(val);
+                    }
+                }
+                return is_last;
+            }
+            if (a instanceof Array) {
+                if (backwards) {
+                    for (i = a.length; --i >= 0; ) if (doit()) break;
+                    ret.reverse();
+                    top.reverse();
+                } else {
+                    for (i = 0; i < a.length; ++i) if (doit()) break;
+                }
+            } else {
+                for (i in a) if (a.hasOwnProperty(i)) if (doit()) break;
+            }
+            return top.concat(ret);
+        }
+        MAP.at_top = function(val) {
+            return new AtTop(val);
+        };
+        MAP.splice = function(val) {
+            return new Splice(val);
+        };
+        MAP.last = function(val) {
+            return new Last(val);
+        };
+        var skip = MAP.skip = {};
+        function AtTop(val) {
+            this.v = val;
+        }
+        function Splice(val) {
+            this.v = val;
+        }
+        function Last(val) {
+            this.v = val;
+        }
+        return MAP;
+    }();
+    function push_uniq(array, el) {
+        if (array.indexOf(el) < 0) array.push(el);
+    }
+    function string_template(text, props) {
+        return text.replace(/\{(.+?)\}/g, function(str, p) {
+            return props[p];
+        });
+    }
+    function remove(array, el) {
+        for (var i = array.length; --i >= 0; ) {
+            if (array[i] === el) array.splice(i, 1);
+        }
+    }
+    function mergeSort(array, cmp) {
+        if (array.length < 2) return array.slice();
+        function merge(a, b) {
+            var r = [], ai = 0, bi = 0, i = 0;
+            while (ai < a.length && bi < b.length) {
+                cmp(a[ai], b[bi]) <= 0 ? r[i++] = a[ai++] : r[i++] = b[bi++];
+            }
+            if (ai < a.length) r.push.apply(r, a.slice(ai));
+            if (bi < b.length) r.push.apply(r, b.slice(bi));
+            return r;
+        }
+        function _ms(a) {
+            if (a.length <= 1) return a;
+            var m = Math.floor(a.length / 2), left = a.slice(0, m), right = a.slice(m);
+            left = _ms(left);
+            right = _ms(right);
+            return merge(left, right);
+        }
+        return _ms(array);
+    }
+    function set_difference(a, b) {
+        return a.filter(function(el) {
+            return b.indexOf(el) < 0;
+        });
+    }
+    function set_intersection(a, b) {
+        return a.filter(function(el) {
+            return b.indexOf(el) >= 0;
+        });
+    }
+    function makePredicate(words) {
+        if (!(words instanceof Array)) words = words.split(" ");
+        var f = "", cats = [];
+        out: for (var i = 0; i < words.length; ++i) {
+            for (var j = 0; j < cats.length; ++j) if (cats[j][0].length == words[i].length) {
+                cats[j].push(words[i]);
+                continue out;
+            }
+            cats.push([ words[i] ]);
+        }
+        function compareTo(arr) {
+            if (arr.length == 1) return f += "return str === " + JSON.stringify(arr[0]) + ";";
+            f += "switch(str){";
+            for (var i = 0; i < arr.length; ++i) f += "case " + JSON.stringify(arr[i]) + ":";
+            f += "return true}return false;";
+        }
+        if (cats.length > 3) {
+            cats.sort(function(a, b) {
+                return b.length - a.length;
+            });
+            f += "switch(str.length){";
+            for (var i = 0; i < cats.length; ++i) {
+                var cat = cats[i];
+                f += "case " + cat[0].length + ":";
+                compareTo(cat);
+            }
+            f += "}";
+        } else {
+            compareTo(words);
+        }
+        return new Function("str", f);
+    }
+    function all(array, predicate) {
+        for (var i = array.length; --i >= 0; ) if (!predicate(array[i])) return false;
+        return true;
+    }
+    function Dictionary() {
+        this._values = Object.create(null);
+        this._size = 0;
+    }
+    Dictionary.prototype = {
+        set: function(key, val) {
+            if (!this.has(key)) ++this._size;
+            this._values["$" + key] = val;
+            return this;
+        },
+        add: function(key, val) {
+            if (this.has(key)) {
+                this.get(key).push(val);
+            } else {
+                this.set(key, [ val ]);
+            }
+            return this;
+        },
+        get: function(key) {
+            return this._values["$" + key];
+        },
+        del: function(key) {
+            if (this.has(key)) {
+                --this._size;
+                delete this._values["$" + key];
+            }
+            return this;
+        },
+        has: function(key) {
+            return "$" + key in this._values;
+        },
+        each: function(f) {
+            for (var i in this._values) f(this._values[i], i.substr(1));
+        },
+        size: function() {
+            return this._size;
+        },
+        map: function(f) {
+            var ret = [];
+            for (var i in this._values) ret.push(f(this._values[i], i.substr(1)));
+            return ret;
+        }
+    };
+    "use strict";
+    function DEFNODE(type, props, methods, base) {
+        if (arguments.length < 4) base = AST_Node;
+        if (!props) props = []; else props = props.split(/\s+/);
+        var self_props = props;
+        if (base && base.PROPS) props = props.concat(base.PROPS);
+        var code = "return function AST_" + type + "(props){ if (props) { ";
+        for (var i = props.length; --i >= 0; ) {
+            code += "this." + props[i] + " = props." + props[i] + ";";
+        }
+        var proto = base && new base();
+        if (proto && proto.initialize || methods && methods.initialize) code += "this.initialize();";
+        code += "}}";
+        var ctor = new Function(code)();
+        if (proto) {
+            ctor.prototype = proto;
+            ctor.BASE = base;
+        }
+        if (base) base.SUBCLASSES.push(ctor);
+        ctor.prototype.CTOR = ctor;
+        ctor.PROPS = props || null;
+        ctor.SELF_PROPS = self_props;
+        ctor.SUBCLASSES = [];
+        if (type) {
+            ctor.prototype.TYPE = ctor.TYPE = type;
+        }
+        if (methods) for (i in methods) if (methods.hasOwnProperty(i)) {
+            if (/^\$/.test(i)) {
+                ctor[i.substr(1)] = methods[i];
+            } else {
+                ctor.prototype[i] = methods[i];
+            }
+        }
+        ctor.DEFMETHOD = function(name, method) {
+            this.prototype[name] = method;
+        };
+        return ctor;
+    }
+    var AST_Token = DEFNODE("Token", "type value line col pos endpos nlb comments_before file", {}, null);
+    var AST_Node = DEFNODE("Node", "start end", {
+        clone: function() {
+            return new this.CTOR(this);
+        },
+        $documentation: "Base class of all AST nodes",
+        $propdoc: {
+            start: "[AST_Token] The first token of this node",
+            end: "[AST_Token] The last token of this node"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this);
+        },
+        walk: function(visitor) {
+            return this._walk(visitor);
+        }
+    }, null);
+    AST_Node.warn_function = null;
+    AST_Node.warn = function(txt, props) {
+        if (AST_Node.warn_function) AST_Node.warn_function(string_template(txt, props));
+    };
+    var AST_Statement = DEFNODE("Statement", null, {
+        $documentation: "Base class of all statements"
+    });
+    var AST_Debugger = DEFNODE("Debugger", null, {
+        $documentation: "Represents a debugger statement"
+    }, AST_Statement);
+    var AST_Directive = DEFNODE("Directive", "value scope", {
+        $documentation: 'Represents a directive, like "use strict";',
+        $propdoc: {
+            value: "[string] The value of this directive as a plain string (it's not an AST_String!)",
+            scope: "[AST_Scope/S] The scope that this directive affects"
+        }
+    }, AST_Statement);
+    var AST_SimpleStatement = DEFNODE("SimpleStatement", "body", {
+        $documentation: "A statement consisting of an expression, i.e. a = 1 + 2",
+        $propdoc: {
+            body: "[AST_Node] an expression node (should not be instanceof AST_Statement)"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.body._walk(visitor);
+            });
+        }
+    }, AST_Statement);
+    function walk_body(node, visitor) {
+        if (node.body instanceof AST_Statement) {
+            node.body._walk(visitor);
+        } else node.body.forEach(function(stat) {
+            stat._walk(visitor);
+        });
+    }
+    var AST_Block = DEFNODE("Block", "body", {
+        $documentation: "A body of statements (usually bracketed)",
+        $propdoc: {
+            body: "[AST_Statement*] an array of statements"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                walk_body(this, visitor);
+            });
+        }
+    }, AST_Statement);
+    var AST_BlockStatement = DEFNODE("BlockStatement", null, {
+        $documentation: "A block statement"
+    }, AST_Block);
+    var AST_EmptyStatement = DEFNODE("EmptyStatement", null, {
+        $documentation: "The empty statement (empty block or simply a semicolon)",
+        _walk: function(visitor) {
+            return visitor._visit(this);
+        }
+    }, AST_Statement);
+    var AST_StatementWithBody = DEFNODE("StatementWithBody", "body", {
+        $documentation: "Base class for all statements that contain one nested body: `For`, `ForIn`, `Do`, `While`, `With`",
+        $propdoc: {
+            body: "[AST_Statement] the body; this should always be present, even if it's an AST_EmptyStatement"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.body._walk(visitor);
+            });
+        }
+    }, AST_Statement);
+    var AST_LabeledStatement = DEFNODE("LabeledStatement", "label", {
+        $documentation: "Statement with a label",
+        $propdoc: {
+            label: "[AST_Label] a label definition"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.label._walk(visitor);
+                this.body._walk(visitor);
+            });
+        }
+    }, AST_StatementWithBody);
+    var AST_DWLoop = DEFNODE("DWLoop", "condition", {
+        $documentation: "Base class for do/while statements",
+        $propdoc: {
+            condition: "[AST_Node] the loop condition.  Should not be instanceof AST_Statement"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.condition._walk(visitor);
+                this.body._walk(visitor);
+            });
+        }
+    }, AST_StatementWithBody);
+    var AST_Do = DEFNODE("Do", null, {
+        $documentation: "A `do` statement"
+    }, AST_DWLoop);
+    var AST_While = DEFNODE("While", null, {
+        $documentation: "A `while` statement"
+    }, AST_DWLoop);
+    var AST_For = DEFNODE("For", "init condition step", {
+        $documentation: "A `for` statement",
+        $propdoc: {
+            init: "[AST_Node?] the `for` initialization code, or null if empty",
+            condition: "[AST_Node?] the `for` termination clause, or null if empty",
+            step: "[AST_Node?] the `for` update clause, or null if empty"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                if (this.init) this.init._walk(visitor);
+                if (this.condition) this.condition._walk(visitor);
+                if (this.step) this.step._walk(visitor);
+                this.body._walk(visitor);
+            });
+        }
+    }, AST_StatementWithBody);
+    var AST_ForIn = DEFNODE("ForIn", "init name object", {
+        $documentation: "A `for ... in` statement",
+        $propdoc: {
+            init: "[AST_Node] the `for/in` initialization code",
+            name: "[AST_SymbolRef?] the loop variable, only if `init` is AST_Var",
+            object: "[AST_Node] the object that we're looping through"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.init._walk(visitor);
+                this.object._walk(visitor);
+                this.body._walk(visitor);
+            });
+        }
+    }, AST_StatementWithBody);
+    var AST_With = DEFNODE("With", "expression", {
+        $documentation: "A `with` statement",
+        $propdoc: {
+            expression: "[AST_Node] the `with` expression"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.expression._walk(visitor);
+                this.body._walk(visitor);
+            });
+        }
+    }, AST_StatementWithBody);
+    var AST_Scope = DEFNODE("Scope", "directives variables functions uses_with uses_eval parent_scope enclosed cname", {
+        $documentation: "Base class for all statements introducing a lexical scope",
+        $propdoc: {
+            directives: "[string*/S] an array of directives declared in this scope",
+            variables: "[Object/S] a map of name -> SymbolDef for all variables/functions defined in this scope",
+            functions: "[Object/S] like `variables`, but only lists function declarations",
+            uses_with: "[boolean/S] tells whether this scope uses the `with` statement",
+            uses_eval: "[boolean/S] tells whether this scope contains a direct call to the global `eval`",
+            parent_scope: "[AST_Scope?/S] link to the parent scope",
+            enclosed: "[SymbolDef*/S] a list of all symbol definitions that are accessed from this scope or any subscopes",
+            cname: "[integer/S] current index for mangling variables (used internally by the mangler)"
+        }
+    }, AST_Block);
+    var AST_Toplevel = DEFNODE("Toplevel", "globals", {
+        $documentation: "The toplevel scope",
+        $propdoc: {
+            globals: "[Object/S] a map of name -> SymbolDef for all undeclared names"
+        },
+        wrap_enclose: function(arg_parameter_pairs) {
+            var self = this;
+            var args = [];
+            var parameters = [];
+            arg_parameter_pairs.forEach(function(pair) {
+                var split = pair.split(":");
+                args.push(split[0]);
+                parameters.push(split[1]);
+            });
+            var wrapped_tl = "(function(" + parameters.join(",") + "){ '$ORIG'; })(" + args.join(",") + ")";
+            wrapped_tl = parse(wrapped_tl);
+            wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node) {
+                if (node instanceof AST_Directive && node.value == "$ORIG") {
+                    return MAP.splice(self.body);
+                }
+            }));
+            return wrapped_tl;
+        },
+        wrap_commonjs: function(name, export_all) {
+            var self = this;
+            var to_export = [];
+            if (export_all) {
+                self.figure_out_scope();
+                self.walk(new TreeWalker(function(node) {
+                    if (node instanceof AST_SymbolDeclaration && node.definition().global) {
+                        if (!find_if(function(n) {
+                            return n.name == node.name;
+                        }, to_export)) to_export.push(node);
+                    }
+                }));
+            }
+            var wrapped_tl = "(function(exports, global){ global['" + name + "'] = exports; '$ORIG'; '$EXPORTS'; }({}, (function(){return this}())))";
+            wrapped_tl = parse(wrapped_tl);
+            wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node) {
+                if (node instanceof AST_SimpleStatement) {
+                    node = node.body;
+                    if (node instanceof AST_String) switch (node.getValue()) {
+                      case "$ORIG":
+                        return MAP.splice(self.body);
+
+                      case "$EXPORTS":
+                        var body = [];
+                        to_export.forEach(function(sym) {
+                            body.push(new AST_SimpleStatement({
+                                body: new AST_Assign({
+                                    left: new AST_Sub({
+                                        expression: new AST_SymbolRef({
+                                            name: "exports"
+                                        }),
+                                        property: new AST_String({
+                                            value: sym.name
+                                        })
+                                    }),
+                                    operator: "=",
+                                    right: new AST_SymbolRef(sym)
+                                })
+                            }));
+                        });
+                        return MAP.splice(body);
+                    }
+                }
+            }));
+            return wrapped_tl;
+        }
+    }, AST_Scope);
+    var AST_Lambda = DEFNODE("Lambda", "name argnames uses_arguments", {
+        $documentation: "Base class for functions",
+        $propdoc: {
+            name: "[AST_SymbolDeclaration?] the name of this function",
+            argnames: "[AST_SymbolFunarg*] array of function arguments",
+            uses_arguments: "[boolean/S] tells whether this function accesses the arguments array"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                if (this.name) this.name._walk(visitor);
+                this.argnames.forEach(function(arg) {
+                    arg._walk(visitor);
+                });
+                walk_body(this, visitor);
+            });
+        }
+    }, AST_Scope);
+    var AST_Accessor = DEFNODE("Accessor", null, {
+        $documentation: "A setter/getter function"
+    }, AST_Lambda);
+    var AST_Function = DEFNODE("Function", null, {
+        $documentation: "A function expression"
+    }, AST_Lambda);
+    var AST_Defun = DEFNODE("Defun", null, {
+        $documentation: "A function definition"
+    }, AST_Lambda);
+    var AST_Jump = DEFNODE("Jump", null, {
+        $documentation: "Base class for “jumps” (for now that's `return`, `throw`, `break` and `continue`)"
+    }, AST_Statement);
+    var AST_Exit = DEFNODE("Exit", "value", {
+        $documentation: "Base class for “exits” (`return` and `throw`)",
+        $propdoc: {
+            value: "[AST_Node?] the value returned or thrown by this statement; could be null for AST_Return"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, this.value && function() {
+                this.value._walk(visitor);
+            });
+        }
+    }, AST_Jump);
+    var AST_Return = DEFNODE("Return", null, {
+        $documentation: "A `return` statement"
+    }, AST_Exit);
+    var AST_Throw = DEFNODE("Throw", null, {
+        $documentation: "A `throw` statement"
+    }, AST_Exit);
+    var AST_LoopControl = DEFNODE("LoopControl", "label", {
+        $documentation: "Base class for loop control statements (`break` and `continue`)",
+        $propdoc: {
+            label: "[AST_LabelRef?] the label, or null if none"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, this.label && function() {
+                this.label._walk(visitor);
+            });
+        }
+    }, AST_Jump);
+    var AST_Break = DEFNODE("Break", null, {
+        $documentation: "A `break` statement"
+    }, AST_LoopControl);
+    var AST_Continue = DEFNODE("Continue", null, {
+        $documentation: "A `continue` statement"
+    }, AST_LoopControl);
+    var AST_If = DEFNODE("If", "condition alternative", {
+        $documentation: "A `if` statement",
+        $propdoc: {
+            condition: "[AST_Node] the `if` condition",
+            alternative: "[AST_Statement?] the `else` part, or null if not present"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.condition._walk(visitor);
+                this.body._walk(visitor);
+                if (this.alternative) this.alternative._walk(visitor);
+            });
+        }
+    }, AST_StatementWithBody);
+    var AST_Switch = DEFNODE("Switch", "expression", {
+        $documentation: "A `switch` statement",
+        $propdoc: {
+            expression: "[AST_Node] the `switch` “discriminant”"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.expression._walk(visitor);
+                walk_body(this, visitor);
+            });
+        }
+    }, AST_Block);
+    var AST_SwitchBranch = DEFNODE("SwitchBranch", null, {
+        $documentation: "Base class for `switch` branches"
+    }, AST_Block);
+    var AST_Default = DEFNODE("Default", null, {
+        $documentation: "A `default` switch branch"
+    }, AST_SwitchBranch);
+    var AST_Case = DEFNODE("Case", "expression", {
+        $documentation: "A `case` switch branch",
+        $propdoc: {
+            expression: "[AST_Node] the `case` expression"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.expression._walk(visitor);
+                walk_body(this, visitor);
+            });
+        }
+    }, AST_SwitchBranch);
+    var AST_Try = DEFNODE("Try", "bcatch bfinally", {
+        $documentation: "A `try` statement",
+        $propdoc: {
+            bcatch: "[AST_Catch?] the catch block, or null if not present",
+            bfinally: "[AST_Finally?] the finally block, or null if not present"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                walk_body(this, visitor);
+                if (this.bcatch) this.bcatch._walk(visitor);
+                if (this.bfinally) this.bfinally._walk(visitor);
+            });
+        }
+    }, AST_Block);
+    var AST_Catch = DEFNODE("Catch", "argname", {
+        $documentation: "A `catch` node; only makes sense as part of a `try` statement",
+        $propdoc: {
+            argname: "[AST_SymbolCatch] symbol for the exception"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.argname._walk(visitor);
+                walk_body(this, visitor);
+            });
+        }
+    }, AST_Block);
+    var AST_Finally = DEFNODE("Finally", null, {
+        $documentation: "A `finally` node; only makes sense as part of a `try` statement"
+    }, AST_Block);
+    var AST_Definitions = DEFNODE("Definitions", "definitions", {
+        $documentation: "Base class for `var` or `const` nodes (variable declarations/initializations)",
+        $propdoc: {
+            definitions: "[AST_VarDef*] array of variable definitions"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.definitions.forEach(function(def) {
+                    def._walk(visitor);
+                });
+            });
+        }
+    }, AST_Statement);
+    var AST_Var = DEFNODE("Var", null, {
+        $documentation: "A `var` statement"
+    }, AST_Definitions);
+    var AST_Const = DEFNODE("Const", null, {
+        $documentation: "A `const` statement"
+    }, AST_Definitions);
+    var AST_VarDef = DEFNODE("VarDef", "name value", {
+        $documentation: "A variable declaration; only appears in a AST_Definitions node",
+        $propdoc: {
+            name: "[AST_SymbolVar|AST_SymbolConst] name of the variable",
+            value: "[AST_Node?] initializer, or null of there's no initializer"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.name._walk(visitor);
+                if (this.value) this.value._walk(visitor);
+            });
+        }
+    });
+    var AST_Call = DEFNODE("Call", "expression args", {
+        $documentation: "A function call expression",
+        $propdoc: {
+            expression: "[AST_Node] expression to invoke as function",
+            args: "[AST_Node*] array of arguments"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.expression._walk(visitor);
+                this.args.forEach(function(arg) {
+                    arg._walk(visitor);
+                });
+            });
+        }
+    });
+    var AST_New = DEFNODE("New", null, {
+        $documentation: "An object instantiation.  Derives from a function call since it has exactly the same properties"
+    }, AST_Call);
+    var AST_Seq = DEFNODE("Seq", "car cdr", {
+        $documentation: "A sequence expression (two comma-separated expressions)",
+        $propdoc: {
+            car: "[AST_Node] first element in sequence",
+            cdr: "[AST_Node] second element in sequence"
+        },
+        $cons: function(x, y) {
+            var seq = new AST_Seq(x);
+            seq.car = x;
+            seq.cdr = y;
+            return seq;
+        },
+        $from_array: function(array) {
+            if (array.length == 0) return null;
+            if (array.length == 1) return array[0].clone();
+            var list = null;
+            for (var i = array.length; --i >= 0; ) {
+                list = AST_Seq.cons(array[i], list);
+            }
+            var p = list;
+            while (p) {
+                if (p.cdr && !p.cdr.cdr) {
+                    p.cdr = p.cdr.car;
+                    break;
+                }
+                p = p.cdr;
+            }
+            return list;
+        },
+        to_array: function() {
+            var p = this, a = [];
+            while (p) {
+                a.push(p.car);
+                if (p.cdr && !(p.cdr instanceof AST_Seq)) {
+                    a.push(p.cdr);
+                    break;
+                }
+                p = p.cdr;
+            }
+            return a;
+        },
+        add: function(node) {
+            var p = this;
+            while (p) {
+                if (!(p.cdr instanceof AST_Seq)) {
+                    var cell = AST_Seq.cons(p.cdr, node);
+                    return p.cdr = cell;
+                }
+                p = p.cdr;
+            }
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.car._walk(visitor);
+                if (this.cdr) this.cdr._walk(visitor);
+            });
+        }
+    });
+    var AST_PropAccess = DEFNODE("PropAccess", "expression property", {
+        $documentation: 'Base class for property access expressions, i.e. `a.foo` or `a["foo"]`',
+        $propdoc: {
+            expression: "[AST_Node] the “container” expression",
+            property: "[AST_Node|string] the property to access.  For AST_Dot this is always a plain string, while for AST_Sub it's an arbitrary AST_Node"
+        }
+    });
+    var AST_Dot = DEFNODE("Dot", null, {
+        $documentation: "A dotted property access expression",
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.expression._walk(visitor);
+            });
+        }
+    }, AST_PropAccess);
+    var AST_Sub = DEFNODE("Sub", null, {
+        $documentation: 'Index-style property access, i.e. `a["foo"]`',
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.expression._walk(visitor);
+                this.property._walk(visitor);
+            });
+        }
+    }, AST_PropAccess);
+    var AST_Unary = DEFNODE("Unary", "operator expression", {
+        $documentation: "Base class for unary expressions",
+        $propdoc: {
+            operator: "[string] the operator",
+            expression: "[AST_Node] expression that this unary operator applies to"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.expression._walk(visitor);
+            });
+        }
+    });
+    var AST_UnaryPrefix = DEFNODE("UnaryPrefix", null, {
+        $documentation: "Unary prefix expression, i.e. `typeof i` or `++i`"
+    }, AST_Unary);
+    var AST_UnaryPostfix = DEFNODE("UnaryPostfix", null, {
+        $documentation: "Unary postfix expression, i.e. `i++`"
+    }, AST_Unary);
+    var AST_Binary = DEFNODE("Binary", "left operator right", {
+        $documentation: "Binary expression, i.e. `a + b`",
+        $propdoc: {
+            left: "[AST_Node] left-hand side expression",
+            operator: "[string] the operator",
+            right: "[AST_Node] right-hand side expression"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.left._walk(visitor);
+                this.right._walk(visitor);
+            });
+        }
+    });
+    var AST_Conditional = DEFNODE("Conditional", "condition consequent alternative", {
+        $documentation: "Conditional expression using the ternary operator, i.e. `a ? b : c`",
+        $propdoc: {
+            condition: "[AST_Node]",
+            consequent: "[AST_Node]",
+            alternative: "[AST_Node]"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.condition._walk(visitor);
+                this.consequent._walk(visitor);
+                this.alternative._walk(visitor);
+            });
+        }
+    });
+    var AST_Assign = DEFNODE("Assign", null, {
+        $documentation: "An assignment expression — `a = b + 5`"
+    }, AST_Binary);
+    var AST_Array = DEFNODE("Array", "elements", {
+        $documentation: "An array literal",
+        $propdoc: {
+            elements: "[AST_Node*] array of elements"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.elements.forEach(function(el) {
+                    el._walk(visitor);
+                });
+            });
+        }
+    });
+    var AST_Object = DEFNODE("Object", "properties", {
+        $documentation: "An object literal",
+        $propdoc: {
+            properties: "[AST_ObjectProperty*] array of properties"
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.properties.forEach(function(prop) {
+                    prop._walk(visitor);
+                });
+            });
+        }
+    });
+    var AST_ObjectProperty = DEFNODE("ObjectProperty", "key value", {
+        $documentation: "Base class for literal object properties",
+        $propdoc: {
+            key: "[string] the property name; it's always a plain string in our AST, no matter if it was a string, number or identifier in original code",
+            value: "[AST_Node] property value.  For setters and getters this is an AST_Function."
+        },
+        _walk: function(visitor) {
+            return visitor._visit(this, function() {
+                this.value._walk(visitor);
+            });
+        }
+    });
+    var AST_ObjectKeyVal = DEFNODE("ObjectKeyVal", null, {
+        $documentation: "A key: value object property"
+    }, AST_ObjectProperty);
+    var AST_ObjectSetter = DEFNODE("ObjectSetter", null, {
+        $documentation: "An object setter property"
+    }, AST_ObjectProperty);
+    var AST_ObjectGetter = DEFNODE("ObjectGetter", null, {
+        $documentation: "An object getter property"
+    }, AST_ObjectProperty);
+    var AST_Symbol = DEFNODE("Symbol", "scope name thedef", {
+        $propdoc: {
+            name: "[string] name of this symbol",
+            scope: "[AST_Scope/S] the current scope (not necessarily the definition scope)",
+            thedef: "[SymbolDef/S] the definition of this symbol"
+        },
+        $documentation: "Base class for all symbols"
+    });
+    var AST_SymbolAccessor = DEFNODE("SymbolAccessor", null, {
+        $documentation: "The name of a property accessor (setter/getter function)"
+    }, AST_Symbol);
+    var AST_SymbolDeclaration = DEFNODE("SymbolDeclaration", "init", {
+        $documentation: "A declaration symbol (symbol in var/const, function name or argument, symbol in catch)",
+        $propdoc: {
+            init: "[AST_Node*/S] array of initializers for this declaration."
+        }
+    }, AST_Symbol);
+    var AST_SymbolVar = DEFNODE("SymbolVar", null, {
+        $documentation: "Symbol defining a variable"
+    }, AST_SymbolDeclaration);
+    var AST_SymbolConst = DEFNODE("SymbolConst", null, {
+        $documentation: "A constant declaration"
+    }, AST_SymbolDeclaration);
+    var AST_SymbolFunarg = DEFNODE("SymbolFunarg", null, {
+        $documentation: "Symbol naming a function argument"
+    }, AST_SymbolVar);
+    var AST_SymbolDefun = DEFNODE("SymbolDefun", null, {
+        $documentation: "Symbol defining a function"
+    }, AST_SymbolDeclaration);
+    var AST_SymbolLambda = DEFNODE("SymbolLambda", null, {
+        $documentation: "Symbol naming a function expression"
+    }, AST_SymbolDeclaration);
+    var AST_SymbolCatch = DEFNODE("SymbolCatch", null, {
+        $documentation: "Symbol naming the exception in catch"
+    }, AST_SymbolDeclaration);
+    var AST_Label = DEFNODE("Label", "references", {
+        $documentation: "Symbol naming a label (declaration)",
+        $propdoc: {
+            references: "[AST_LabelRef*] a list of nodes referring to this label"
+        }
+    }, AST_Symbol);
+    var AST_SymbolRef = DEFNODE("SymbolRef", null, {
+        $documentation: "Reference to some symbol (not definition/declaration)"
+    }, AST_Symbol);
+    var AST_LabelRef = DEFNODE("LabelRef", null, {
+        $documentation: "Reference to a label symbol"
+    }, AST_Symbol);
+    var AST_This = DEFNODE("This", null, {
+        $documentation: "The `this` symbol"
+    }, AST_Symbol);
+    var AST_Constant = DEFNODE("Constant", null, {
+        $documentation: "Base class for all constants",
+        getValue: function() {
+            return this.value;
+        }
+    });
+    var AST_String = DEFNODE("String", "value", {
+        $documentation: "A string literal",
+        $propdoc: {
+            value: "[string] the contents of this string"
+        }
+    }, AST_Constant);
+    var AST_Number = DEFNODE("Number", "value", {
+        $documentation: "A number literal",
+        $propdoc: {
+            value: "[number] the numeric value"
+        }
+    }, AST_Constant);
+    var AST_RegExp = DEFNODE("RegExp", "value", {
+        $documentation: "A regexp literal",
+        $propdoc: {
+            value: "[RegExp] the actual regexp"
+        }
+    }, AST_Constant);
+    var AST_Atom = DEFNODE("Atom", null, {
+        $documentation: "Base class for atoms"
+    }, AST_Constant);
+    var AST_Null = DEFNODE("Null", null, {
+        $documentation: "The `null` atom",
+        value: null
+    }, AST_Atom);
+    var AST_NaN = DEFNODE("NaN", null, {
+        $documentation: "The impossible value",
+        value: 0 / 0
+    }, AST_Atom);
+    var AST_Undefined = DEFNODE("Undefined", null, {
+        $documentation: "The `undefined` value",
+        value: function() {}()
+    }, AST_Atom);
+    var AST_Hole = DEFNODE("Hole", null, {
+        $documentation: "A hole in an array",
+        value: function() {}()
+    }, AST_Atom);
+    var AST_Infinity = DEFNODE("Infinity", null, {
+        $documentation: "The `Infinity` value",
+        value: 1 / 0
+    }, AST_Atom);
+    var AST_Boolean = DEFNODE("Boolean", null, {
+        $documentation: "Base class for booleans"
+    }, AST_Atom);
+    var AST_False = DEFNODE("False", null, {
+        $documentation: "The `false` atom",
+        value: false
+    }, AST_Boolean);
+    var AST_True = DEFNODE("True", null, {
+        $documentation: "The `true` atom",
+        value: true
+    }, AST_Boolean);
+    function TreeWalker(callback) {
+        this.visit = callback;
+        this.stack = [];
+    }
+    TreeWalker.prototype = {
+        _visit: function(node, descend) {
+            this.stack.push(node);
+            var ret = this.visit(node, descend ? function() {
+                descend.call(node);
+            } : noop);
+            if (!ret && descend) {
+                descend.call(node);
+            }
+            this.stack.pop();
+            return ret;
+        },
+        parent: function(n) {
+            return this.stack[this.stack.length - 2 - (n || 0)];
+        },
+        push: function(node) {
+            this.stack.push(node);
+        },
+        pop: function() {
+            return this.stack.pop();
+        },
+        self: function() {
+            return this.stack[this.stack.length - 1];
+        },
+        find_parent: function(type) {
+            var stack = this.stack;
+            for (var i = stack.length; --i >= 0; ) {
+                var x = stack[i];
+                if (x instanceof type) return x;
+            }
+        },
+        has_directive: function(type) {
+            return this.find_parent(AST_Scope).has_directive(type);
+        },
+        in_boolean_context: function() {
+            var stack = this.stack;
+            var i = stack.length, self = stack[--i];
+            while (i > 0) {
+                var p = stack[--i];
+                if (p instanceof AST_If && p.condition === self || p instanceof AST_Conditional && p.condition === self || p instanceof AST_DWLoop && p.condition === self || p instanceof AST_For && p.condition === self || p instanceof AST_UnaryPrefix && p.operator == "!" && p.expression === self) {
+                    return true;
+                }
+                if (!(p instanceof AST_Binary && (p.operator == "&&" || p.operator == "||"))) return false;
+                self = p;
+            }
+        },
+        loopcontrol_target: function(label) {
+            var stack = this.stack;
+            if (label) {
+                for (var i = stack.length; --i >= 0; ) {
+                    var x = stack[i];
+                    if (x instanceof AST_LabeledStatement && x.label.name == label.name) {
+                        return x.body;
+                    }
+                }
+            } else {
+                for (var i = stack.length; --i >= 0; ) {
+                    var x = stack[i];
+                    if (x instanceof AST_Switch || x instanceof AST_For || x instanceof AST_ForIn || x instanceof AST_DWLoop) return x;
+                }
+            }
+        }
+    };
+    "use strict";
+    var KEYWORDS = "break case catch const continue debugger default delete do else finally for function if in instanceof new return switch throw try typeof var void while with";
+    var KEYWORDS_ATOM = "false null true";
+    var RESERVED_WORDS = "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized this throws transient volatile" + " " + KEYWORDS_ATOM + " " + KEYWORDS;
+    var KEYWORDS_BEFORE_EXPRESSION = "return new delete throw else case";
+    KEYWORDS = makePredicate(KEYWORDS);
+    RESERVED_WORDS = makePredicate(RESERVED_WORDS);
+    KEYWORDS_BEFORE_EXPRESSION = makePredicate(KEYWORDS_BEFORE_EXPRESSION);
+    KEYWORDS_ATOM = makePredicate(KEYWORDS_ATOM);
+    var OPERATOR_CHARS = makePredicate(characters("+-*&%=<>!?|~^"));
+    var RE_HEX_NUMBER = /^0x[0-9a-f]+$/i;
+    var RE_OCT_NUMBER = /^0[0-7]+$/;
+    var RE_DEC_NUMBER = /^\d*\.?\d*(?:e[+-]?\d*(?:\d\.?|\.?\d)\d*)?$/i;
+    var OPERATORS = makePredicate([ "in", "instanceof", "typeof", "new", "void", "delete", "++", "--", "+", "-", "!", "~", "&", "|", "^", "*", "/", "%", ">>", "<<", ">>>", "<", ">", "<=", ">=", "==", "===", "!=", "!==", "?", "=", "+=", "-=", "/=", "*=", "%=", ">>=", "<<=", ">>>=", "|=", "^=", "&=", "&&", "||" ]);
+    var WHITESPACE_CHARS = makePredicate(characters(" \u00a0\n\r\t\f\u000b\u200b\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000"));
+    var PUNC_BEFORE_EXPRESSION = makePredicate(characters("[{(,.;:"));
+    var PUNC_CHARS = makePredicate(characters("[]{}(),;:"));
+    var REGEXP_MODIFIERS = makePredicate(characters("gmsiy"));
+    var UNICODE = {
+        letter: new RegExp("[\\u0041-\\u005A\\u0061-\\u007A\\u00AA\\u00B5\\u00BA\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02C1\\u02C6-\\u02D1\\u02E0-\\u02E4\\u02EC\\u02EE\\u0370-\\u0374\\u0376\\u0377\\u037A-\\u037D\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03F5\\u03F7-\\u0481\\u048A-\\u0523\\u0531-\\u0556\\u0559\\u0561-\\u0587\\u05D0-\\u05EA\\u05F0-\\u05F2\\u0621-\\u064A\\u066E\\u066F\\u0671-\\u06D3\\u06D5\\u06E5\\u06E6\\u06EE\\u06EF\\u06FA-\\u06FC\\u06FF\\u0710\\u0712-\\u072F\\u074D-\\u07A5\\u07B1\\u07CA-\\u07EA\\u07F4\\u07F5\\u07FA\\u0904-\\u0939\\u093D\\u0950\\u0958-\\u0961\\u0971\\u0972\\u097B-\\u097F\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09BD\\u09CE\\u09DC\\u09DD\\u09DF-\\u09E1\\u09F0\\u09F1\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A72-\\u0A74\\u0A85-\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AD0\\u0AE0\\u0AE1\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B35-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B71\\u0B83\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB9\\u0BD0\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C33\\u0C35-\\u0C39\\u0C3D\\u0C58\\u0C59\\u0C60\\u0C61\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBD\\u0CDE\\u0CE0\\u0CE1\\u0D05-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D28\\u0D2A-\\u0D39\\u0D3D\\u0D60\\u0D61\\u0D7A-\\u0D7F\\u0D85-\\u0D96\\u0D9A-\\u0DB1\\u0DB3-\\u0DBB\\u0DBD\\u0DC0-\\u0DC6\\u0E01-\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E46\\u0E81\\u0E82\\u0E84\\u0E87\\u0E88\\u0E8A\\u0E8D\\u0E94-\\u0E97\\u0E99-\\u0E9F\\u0EA1-\\u0EA3\\u0EA5\\u0EA7\\u0EAA\\u0EAB\\u0EAD-\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0EC6\\u0EDC\\u0EDD\\u0F00\\u0F40-\\u0F47\\u0F49-\\u0F6C\\u0F88-\\u0F8B\\u1000-\\u102A\\u103F\\u1050-\\u1055\\u105A-\\u105D\\u1061\\u1065\\u1066\\u106E-\\u1070\\u1075-\\u1081\\u108E\\u10A0-\\u10C5\\u10D0-\\u10FA\\u10FC\\u1100-\\u1159\\u115F-\\u11A2\\u11A8-\\u11F9\\u1200-\\u1248\\u124A-\\u124D\\u1250-\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288\\u128A-\\u128D\\u1290-\\u12B0\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-\\u12C5\\u12C8-\\u12D6\\u12D8-\\u1310\\u1312-\\u1315\\u1318-\\u135A\\u1380-\\u138F\\u13A0-\\u13F4\\u1401-\\u166C\\u166F-\\u1676\\u1681-\\u169A\\u16A0-\\u16EA\\u1700-\\u170C\\u170E-\\u1711\\u1720-\\u1731\\u1740-\\u1751\\u1760-\\u176C\\u176E-\\u1770\\u1780-\\u17B3\\u17D7\\u17DC\\u1820-\\u1877\\u1880-\\u18A8\\u18AA\\u1900-\\u191C\\u1950-\\u196D\\u1970-\\u1974\\u1980-\\u19A9\\u19C1-\\u19C7\\u1A00-\\u1A16\\u1B05-\\u1B33\\u1B45-\\u1B4B\\u1B83-\\u1BA0\\u1BAE\\u1BAF\\u1C00-\\u1C23\\u1C4D-\\u1C4F\\u1C5A-\\u1C7D\\u1D00-\\u1DBF\\u1E00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2071\\u207F\\u2090-\\u2094\\u2102\\u2107\\u210A-\\u2113\\u2115\\u2119-\\u211D\\u2124\\u2126\\u2128\\u212A-\\u212D\\u212F-\\u2139\\u213C-\\u213F\\u2145-\\u2149\\u214E\\u2183\\u2184\\u2C00-\\u2C2E\\u2C30-\\u2C5E\\u2C60-\\u2C6F\\u2C71-\\u2C7D\\u2C80-\\u2CE4\\u2D00-\\u2D25\\u2D30-\\u2D65\\u2D6F\\u2D80-\\u2D96\\u2DA0-\\u2DA6\\u2DA8-\\u2DAE\\u2DB0-\\u2DB6\\u2DB8-\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6\\u2DD8-\\u2DDE\\u2E2F\\u3005\\u3006\\u3031-\\u3035\\u303B\\u303C\\u3041-\\u3096\\u309D-\\u309F\\u30A1-\\u30FA\\u30FC-\\u30FF\\u3105-\\u312D\\u3131-\\u318E\\u31A0-\\u31B7\\u31F0-\\u31FF\\u3400\\u4DB5\\u4E00\\u9FC3\\uA000-\\uA48C\\uA500-\\uA60C\\uA610-\\uA61F\\uA62A\\uA62B\\uA640-\\uA65F\\uA662-\\uA66E\\uA67F-\\uA697\\uA717-\\uA71F\\uA722-\\uA788\\uA78B\\uA78C\\uA7FB-\\uA801\\uA803-\\uA805\\uA807-\\uA80A\\uA80C-\\uA822\\uA840-\\uA873\\uA882-\\uA8B3\\uA90A-\\uA925\\uA930-\\uA946\\uAA00-\\uAA28\\uAA40-\\uAA42\\uAA44-\\uAA4B\\uAC00\\uD7A3\\uF900-\\uFA2D\\uFA30-\\uFA6A\\uFA70-\\uFAD9\\uFB00-\\uFB06\\uFB13-\\uFB17\\uFB1D\\uFB1F-\\uFB28\\uFB2A-\\uFB36\\uFB38-\\uFB3C\\uFB3E\\uFB40\\uFB41\\uFB43\\uFB44\\uFB46-\\uFBB1\\uFBD3-\\uFD3D\\uFD50-\\uFD8F\\uFD92-\\uFDC7\\uFDF0-\\uFDFB\\uFE70-\\uFE74\\uFE76-\\uFEFC\\uFF21-\\uFF3A\\uFF41-\\uFF5A\\uFF66-\\uFFBE\\uFFC2-\\uFFC7\\uFFCA-\\uFFCF\\uFFD2-\\uFFD7\\uFFDA-\\uFFDC]"),
+        non_spacing_mark: new RegExp("[\\u0300-\\u036F\\u0483-\\u0487\\u0591-\\u05BD\\u05BF\\u05C1\\u05C2\\u05C4\\u05C5\\u05C7\\u0610-\\u061A\\u064B-\\u065E\\u0670\\u06D6-\\u06DC\\u06DF-\\u06E4\\u06E7\\u06E8\\u06EA-\\u06ED\\u0711\\u0730-\\u074A\\u07A6-\\u07B0\\u07EB-\\u07F3\\u0816-\\u0819\\u081B-\\u0823\\u0825-\\u0827\\u0829-\\u082D\\u0900-\\u0902\\u093C\\u0941-\\u0948\\u094D\\u0951-\\u0955\\u0962\\u0963\\u0981\\u09BC\\u09C1-\\u09C4\\u09CD\\u09E2\\u09E3\\u0A01\\u0A02\\u0A3C\\u0A41\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A51\\u0A70\\u0A71\\u0A75\\u0A81\\u0A82\\u0ABC\\u0AC1-\\u0AC5\\u0AC7\\u0AC8\\u0ACD\\u0AE2\\u0AE3\\u0B01\\u0B3C\\u0B3F\\u0B41-\\u0B44\\u0B4D\\u0B56\\u0B62\\u0B63\\u0B82\\u0BC0\\u0BCD\\u0C3E-\\u0C40\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C62\\u0C63\\u0CBC\\u0CBF\\u0CC6\\u0CCC\\u0CCD\\u0CE2\\u0CE3\\u0D41-\\u0D44\\u0D4D\\u0D62\\u0D63\\u0DCA\\u0DD2-\\u0DD4\\u0DD6\\u0E31\\u0E34-\\u0E3A\\u0E47-\\u0E4E\\u0EB1\\u0EB4-\\u0EB9\\u0EBB\\u0EBC\\u0EC8-\\u0ECD\\u0F18\\u0F19\\u0F35\\u0F37\\u0F39\\u0F71-\\u0F7E\\u0F80-\\u0F84\\u0F86\\u0F87\\u0F90-\\u0F97\\u0F99-\\u0FBC\\u0FC6\\u102D-\\u1030\\u1032-\\u1037\\u1039\\u103A\\u103D\\u103E\\u1058\\u1059\\u105E-\\u1060\\u1071-\\u1074\\u1082\\u1085\\u1086\\u108D\\u109D\\u135F\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17B7-\\u17BD\\u17C6\\u17C9-\\u17D3\\u17DD\\u180B-\\u180D\\u18A9\\u1920-\\u1922\\u1927\\u1928\\u1932\\u1939-\\u193B\\u1A17\\u1A18\\u1A56\\u1A58-\\u1A5E\\u1A60\\u1A62\\u1A65-\\u1A6C\\u1A73-\\u1A7C\\u1A7F\\u1B00-\\u1B03\\u1B34\\u1B36-\\u1B3A\\u1B3C\\u1B42\\u1B6B-\\u1B73\\u1B80\\u1B81\\u1BA2-\\u1BA5\\u1BA8\\u1BA9\\u1C2C-\\u1C33\\u1C36\\u1C37\\u1CD0-\\u1CD2\\u1CD4-\\u1CE0\\u1CE2-\\u1CE8\\u1CED\\u1DC0-\\u1DE6\\u1DFD-\\u1DFF\\u20D0-\\u20DC\\u20E1\\u20E5-\\u20F0\\u2CEF-\\u2CF1\\u2DE0-\\u2DFF\\u302A-\\u302F\\u3099\\u309A\\uA66F\\uA67C\\uA67D\\uA6F0\\uA6F1\\uA802\\uA806\\uA80B\\uA825\\uA826\\uA8C4\\uA8E0-\\uA8F1\\uA926-\\uA92D\\uA947-\\uA951\\uA980-\\uA982\\uA9B3\\uA9B6-\\uA9B9\\uA9BC\\uAA29-\\uAA2E\\uAA31\\uAA32\\uAA35\\uAA36\\uAA43\\uAA4C\\uAAB0\\uAAB2-\\uAAB4\\uAAB7\\uAAB8\\uAABE\\uAABF\\uAAC1\\uABE5\\uABE8\\uABED\\uFB1E\\uFE00-\\uFE0F\\uFE20-\\uFE26]"),
+        space_combining_mark: new RegExp("[\\u0903\\u093E-\\u0940\\u0949-\\u094C\\u094E\\u0982\\u0983\\u09BE-\\u09C0\\u09C7\\u09C8\\u09CB\\u09CC\\u09D7\\u0A03\\u0A3E-\\u0A40\\u0A83\\u0ABE-\\u0AC0\\u0AC9\\u0ACB\\u0ACC\\u0B02\\u0B03\\u0B3E\\u0B40\\u0B47\\u0B48\\u0B4B\\u0B4C\\u0B57\\u0BBE\\u0BBF\\u0BC1\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCC\\u0BD7\\u0C01-\\u0C03\\u0C41-\\u0C44\\u0C82\\u0C83\\u0CBE\\u0CC0-\\u0CC4\\u0CC7\\u0CC8\\u0CCA\\u0CCB\\u0CD5\\u0CD6\\u0D02\\u0D03\\u0D3E-\\u0D40\\u0D46-\\u0D48\\u0D4A-\\u0D4C\\u0D57\\u0D82\\u0D83\\u0DCF-\\u0DD1\\u0DD8-\\u0DDF\\u0DF2\\u0DF3\\u0F3E\\u0F3F\\u0F7F\\u102B\\u102C\\u1031\\u1038\\u103B\\u103C\\u1056\\u1057\\u1062-\\u1064\\u1067-\\u106D\\u1083\\u1084\\u1087-\\u108C\\u108F\\u109A-\\u109C\\u17B6\\u17BE-\\u17C5\\u17C7\\u17C8\\u1923-\\u1926\\u1929-\\u192B\\u1930\\u1931\\u1933-\\u1938\\u19B0-\\u19C0\\u19C8\\u19C9\\u1A19-\\u1A1B\\u1A55\\u1A57\\u1A61\\u1A63\\u1A64\\u1A6D-\\u1A72\\u1B04\\u1B35\\u1B3B\\u1B3D-\\u1B41\\u1B43\\u1B44\\u1B82\\u1BA1\\u1BA6\\u1BA7\\u1BAA\\u1C24-\\u1C2B\\u1C34\\u1C35\\u1CE1\\u1CF2\\uA823\\uA824\\uA827\\uA880\\uA881\\uA8B4-\\uA8C3\\uA952\\uA953\\uA983\\uA9B4\\uA9B5\\uA9BA\\uA9BB\\uA9BD-\\uA9C0\\uAA2F\\uAA30\\uAA33\\uAA34\\uAA4D\\uAA7B\\uABE3\\uABE4\\uABE6\\uABE7\\uABE9\\uABEA\\uABEC]"),
+        connector_punctuation: new RegExp("[\\u005F\\u203F\\u2040\\u2054\\uFE33\\uFE34\\uFE4D-\\uFE4F\\uFF3F]")
+    };
+    function is_letter(code) {
+        return code >= 97 && code <= 122 || code >= 65 && code <= 90 || code >= 170 && UNICODE.letter.test(String.fromCharCode(code));
+    }
+    function is_digit(code) {
+        return code >= 48 && code <= 57;
+    }
+    function is_alphanumeric_char(code) {
+        return is_digit(code) || is_letter(code);
+    }
+    function is_unicode_combining_mark(ch) {
+        return UNICODE.non_spacing_mark.test(ch) || UNICODE.space_combining_mark.test(ch);
+    }
+    function is_unicode_connector_punctuation(ch) {
+        return UNICODE.connector_punctuation.test(ch);
+    }
+    function is_identifier(name) {
+        return !RESERVED_WORDS(name) && /^[a-z_$][a-z0-9_$]*$/i.test(name);
+    }
+    function is_identifier_start(code) {
+        return code == 36 || code == 95 || is_letter(code);
+    }
+    function is_identifier_char(ch) {
+        var code = ch.charCodeAt(0);
+        return is_identifier_start(code) || is_digit(code) || code == 8204 || code == 8205 || is_unicode_combining_mark(ch) || is_unicode_connector_punctuation(ch);
+    }
+    function is_identifier_string(str) {
+        var i = str.length;
+        if (i == 0) return false;
+        if (is_digit(str.charCodeAt(0))) return false;
+        while (--i >= 0) {
+            if (!is_identifier_char(str.charAt(i))) return false;
+        }
+        return true;
+    }
+    function parse_js_number(num) {
+        if (RE_HEX_NUMBER.test(num)) {
+            return parseInt(num.substr(2), 16);
+        } else if (RE_OCT_NUMBER.test(num)) {
+            return parseInt(num.substr(1), 8);
+        } else if (RE_DEC_NUMBER.test(num)) {
+            return parseFloat(num);
+        }
+    }
+    function JS_Parse_Error(message, line, col, pos) {
+        this.message = message;
+        this.line = line;
+        this.col = col;
+        this.pos = pos;
+        this.stack = new Error().stack;
+    }
+    JS_Parse_Error.prototype.toString = function() {
+        return this.message + " (line: " + this.line + ", col: " + this.col + ", pos: " + this.pos + ")" + "\n\n" + this.stack;
+    };
+    function js_error(message, filename, line, col, pos) {
+        throw new JS_Parse_Error(message, line, col, pos);
+    }
+    function is_token(token, type, val) {
+        return token.type == type && (val == null || token.value == val);
+    }
+    var EX_EOF = {};
+    function tokenizer($TEXT, filename) {
+        var S = {
+            text: $TEXT.replace(/\r\n?|[\n\u2028\u2029]/g, "\n").replace(/\uFEFF/g, ""),
+            filename: filename,
+            pos: 0,
+            tokpos: 0,
+            line: 1,
+            tokline: 0,
+            col: 0,
+            tokcol: 0,
+            newline_before: false,
+            regex_allowed: false,
+            comments_before: []
+        };
+        function peek() {
+            return S.text.charAt(S.pos);
+        }
+        function next(signal_eof, in_string) {
+            var ch = S.text.charAt(S.pos++);
+            if (signal_eof && !ch) throw EX_EOF;
+            if (ch == "\n") {
+                S.newline_before = S.newline_before || !in_string;
+                ++S.line;
+                S.col = 0;
+            } else {
+                ++S.col;
+            }
+            return ch;
+        }
+        function find(what, signal_eof) {
+            var pos = S.text.indexOf(what, S.pos);
+            if (signal_eof && pos == -1) throw EX_EOF;
+            return pos;
+        }
+        function start_token() {
+            S.tokline = S.line;
+            S.tokcol = S.col;
+            S.tokpos = S.pos;
+        }
+        function token(type, value, is_comment) {
+            S.regex_allowed = type == "operator" && !UNARY_POSTFIX(value) || type == "keyword" && KEYWORDS_BEFORE_EXPRESSION(value) || type == "punc" && PUNC_BEFORE_EXPRESSION(value);
+            var ret = {
+                type: type,
+                value: value,
+                line: S.tokline,
+                col: S.tokcol,
+                pos: S.tokpos,
+                endpos: S.pos,
+                nlb: S.newline_before,
+                file: filename
+            };
+            if (!is_comment) {
+                ret.comments_before = S.comments_before;
+                S.comments_before = [];
+                for (var i = 0, len = ret.comments_before.length; i < len; i++) {
+                    ret.nlb = ret.nlb || ret.comments_before[i].nlb;
+                }
+            }
+            S.newline_before = false;
+            return new AST_Token(ret);
+        }
+        function skip_whitespace() {
+            while (WHITESPACE_CHARS(peek())) next();
+        }
+        function read_while(pred) {
+            var ret = "", ch, i = 0;
+            while ((ch = peek()) && pred(ch, i++)) ret += next();
+            return ret;
+        }
+        function parse_error(err) {
+            js_error(err, filename, S.tokline, S.tokcol, S.tokpos);
+        }
+        function read_num(prefix) {
+            var has_e = false, after_e = false, has_x = false, has_dot = prefix == ".";
+            var num = read_while(function(ch, i) {
+                var code = ch.charCodeAt(0);
+                switch (code) {
+                  case 120:
+                  case 88:
+                    return has_x ? false : has_x = true;
+
+                  case 101:
+                  case 69:
+                    return has_x ? true : has_e ? false : has_e = after_e = true;
+
+                  case 45:
+                    return after_e || i == 0 && !prefix;
+
+                  case 43:
+                    return after_e;
+
+                  case after_e = false, 46:
+                    return !has_dot && !has_x && !has_e ? has_dot = true : false;
+                }
+                return is_alphanumeric_char(code);
+            });
+            if (prefix) num = prefix + num;
+            var valid = parse_js_number(num);
+            if (!isNaN(valid)) {
+                return token("num", valid);
+            } else {
+                parse_error("Invalid syntax: " + num);
+            }
+        }
+        function read_escaped_char(in_string) {
+            var ch = next(true, in_string);
+            switch (ch.charCodeAt(0)) {
+              case 110:
+                return "\n";
+
+              case 114:
+                return "\r";
+
+              case 116:
+                return "    ";
+
+              case 98:
+                return "\b";
+
+              case 118:
+                return "";
+
+              case 102:
+                return "\f";
+
+              case 48:
+                return "\x00";
+
+              case 120:
+                return String.fromCharCode(hex_bytes(2));
+
+              case 117:
+                return String.fromCharCode(hex_bytes(4));
+
+              case 10:
+                return "";
+
+              default:
+                return ch;
+            }
+        }
+        function hex_bytes(n) {
+            var num = 0;
+            for (;n > 0; --n) {
+                var digit = parseInt(next(true), 16);
+                if (isNaN(digit)) parse_error("Invalid hex-character pattern in string");
+                num = num << 4 | digit;
+            }
+            return num;
+        }
+        var read_string = with_eof_error("Unterminated string constant", function() {
+            var quote = next(), ret = "";
+            for (;;) {
+                var ch = next(true);
+                if (ch == "\\") {
+                    var octal_len = 0, first = null;
+                    ch = read_while(function(ch) {
+                        if (ch >= "0" && ch <= "7") {
+                            if (!first) {
+                                first = ch;
+                                return ++octal_len;
+                            } else if (first <= "3" && octal_len <= 2) return ++octal_len; else if (first >= "4" && octal_len <= 1) return ++octal_len;
+                        }
+                        return false;
+                    });
+                    if (octal_len > 0) ch = String.fromCharCode(parseInt(ch, 8)); else ch = read_escaped_char(true);
+                } else if (ch == quote) break;
+                ret += ch;
+            }
+            return token("string", ret);
+        });
+        function read_line_comment() {
+            next();
+            var i = find("\n"), ret;
+            if (i == -1) {
+                ret = S.text.substr(S.pos);
+                S.pos = S.text.length;
+            } else {
+                ret = S.text.substring(S.pos, i);
+                S.pos = i;
+            }
+            return token("comment1", ret, true);
+        }
+        var read_multiline_comment = with_eof_error("Unterminated multiline comment", function() {
+            next();
+            var i = find("*/", true);
+            var text = S.text.substring(S.pos, i);
+            var a = text.split("\n"), n = a.length;
+            S.pos = i + 2;
+            S.line += n - 1;
+            if (n > 1) S.col = a[n - 1].length; else S.col += a[n - 1].length;
+            S.col += 2;
+            S.newline_before = S.newline_before || text.indexOf("\n") >= 0;
+            return token("comment2", text, true);
+        });
+        function read_name() {
+            var backslash = false, name = "", ch, escaped = false, hex;
+            while ((ch = peek()) != null) {
+                if (!backslash) {
+                    if (ch == "\\") escaped = backslash = true, next(); else if (is_identifier_char(ch)) name += next(); else break;
+                } else {
+                    if (ch != "u") parse_error("Expecting UnicodeEscapeSequence -- uXXXX");
+                    ch = read_escaped_char();
+                    if (!is_identifier_char(ch)) parse_error("Unicode char: " + ch.charCodeAt(0) + " is not valid in identifier");
+                    name += ch;
+                    backslash = false;
+                }
+            }
+            if (KEYWORDS(name) && escaped) {
+                hex = name.charCodeAt(0).toString(16).toUpperCase();
+                name = "\\u" + "0000".substr(hex.length) + hex + name.slice(1);
+            }
+            return name;
+        }
+        var read_regexp = with_eof_error("Unterminated regular expression", function(regexp) {
+            var prev_backslash = false, ch, in_class = false;
+            while (ch = next(true)) if (prev_backslash) {
+                regexp += "\\" + ch;
+                prev_backslash = false;
+            } else if (ch == "[") {
+                in_class = true;
+                regexp += ch;
+            } else if (ch == "]" && in_class) {
+                in_class = false;
+                regexp += ch;
+            } else if (ch == "/" && !in_class) {
+                break;
+            } else if (ch == "\\") {
+                prev_backslash = true;
+            } else {
+                regexp += ch;
+            }
+            var mods = read_name();
+            return token("regexp", new RegExp(regexp, mods));
+        });
+        function read_operator(prefix) {
+            function grow(op) {
+                if (!peek()) return op;
+                var bigger = op + peek();
+                if (OPERATORS(bigger)) {
+                    next();
+                    return grow(bigger);
+                } else {
+                    return op;
+                }
+            }
+            return token("operator", grow(prefix || next()));
+        }
+        function handle_slash() {
+            next();
+            var regex_allowed = S.regex_allowed;
+            switch (peek()) {
+              case "/":
+                S.comments_before.push(read_line_comment());
+                S.regex_allowed = regex_allowed;
+                return next_token();
+
+              case "*":
+                S.comments_before.push(read_multiline_comment());
+                S.regex_allowed = regex_allowed;
+                return next_token();
+            }
+            return S.regex_allowed ? read_regexp("") : read_operator("/");
+        }
+        function handle_dot() {
+            next();
+            return is_digit(peek().charCodeAt(0)) ? read_num(".") : token("punc", ".");
+        }
+        function read_word() {
+            var word = read_name();
+            return KEYWORDS_ATOM(word) ? token("atom", word) : !KEYWORDS(word) ? token("name", word) : OPERATORS(word) ? token("operator", word) : token("keyword", word);
+        }
+        function with_eof_error(eof_error, cont) {
+            return function(x) {
+                try {
+                    return cont(x);
+                } catch (ex) {
+                    if (ex === EX_EOF) parse_error(eof_error); else throw ex;
+                }
+            };
+        }
+        function next_token(force_regexp) {
+            if (force_regexp != null) return read_regexp(force_regexp);
+            skip_whitespace();
+            start_token();
+            var ch = peek();
+            if (!ch) return token("eof");
+            var code = ch.charCodeAt(0);
+            switch (code) {
+              case 34:
+              case 39:
+                return read_string();
+
+              case 46:
+                return handle_dot();
+
+              case 47:
+                return handle_slash();
+            }
+            if (is_digit(code)) return read_num();
+            if (PUNC_CHARS(ch)) return token("punc", next());
+            if (OPERATOR_CHARS(ch)) return read_operator();
+            if (code == 92 || is_identifier_start(code)) return read_word();
+            parse_error("Unexpected character '" + ch + "'");
+        }
+        next_token.context = function(nc) {
+            if (nc) S = nc;
+            return S;
+        };
+        return next_token;
+    }
+    var UNARY_PREFIX = makePredicate([ "typeof", "void", "delete", "--", "++", "!", "~", "-", "+" ]);
+    var UNARY_POSTFIX = makePredicate([ "--", "++" ]);
+    var ASSIGNMENT = makePredicate([ "=", "+=", "-=", "/=", "*=", "%=", ">>=", "<<=", ">>>=", "|=", "^=", "&=" ]);
+    var PRECEDENCE = function(a, ret) {
+        for (var i = 0, n = 1; i < a.length; ++i, ++n) {
+            var b = a[i];
+            for (var j = 0; j < b.length; ++j) {
+                ret[b[j]] = n;
+            }
+        }
+        return ret;
+    }([ [ "||" ], [ "&&" ], [ "|" ], [ "^" ], [ "&" ], [ "==", "===", "!=", "!==" ], [ "<", ">", "<=", ">=", "in", "instanceof" ], [ ">>", "<<", ">>>" ], [ "+", "-" ], [ "*", "/", "%" ] ], {});
+    var STATEMENTS_WITH_LABELS = array_to_hash([ "for", "do", "while", "switch" ]);
+    var ATOMIC_START_TOKEN = array_to_hash([ "atom", "num", "string", "regexp", "name" ]);
+    function parse($TEXT, options) {
+        options = defaults(options, {
+            strict: false,
+            filename: null,
+            toplevel: null,
+            expression: false
+        });
+        var S = {
+            input: typeof $TEXT == "string" ? tokenizer($TEXT, options.filename) : $TEXT,
+            token: null,
+            prev: null,
+            peeked: null,
+            in_function: 0,
+            in_directives: true,
+            in_loop: 0,
+            labels: []
+        };
+        S.token = next();
+        function is(type, value) {
+            return is_token(S.token, type, value);
+        }
+        function peek() {
+            return S.peeked || (S.peeked = S.input());
+        }
+        function next() {
+            S.prev = S.token;
+            if (S.peeked) {
+                S.token = S.peeked;
+                S.peeked = null;
+            } else {
+                S.token = S.input();
+            }
+            S.in_directives = S.in_directives && (S.token.type == "string" || is("punc", ";"));
+            return S.token;
+        }
+        function prev() {
+            return S.prev;
+        }
+        function croak(msg, line, col, pos) {
+            var ctx = S.input.context();
+            js_error(msg, ctx.filename, line != null ? line : ctx.tokline, col != null ? col : ctx.tokcol, pos != null ? pos : ctx.tokpos);
+        }
+        function token_error(token, msg) {
+            croak(msg, token.line, token.col);
+        }
+        function unexpected(token) {
+            if (token == null) token = S.token;
+            token_error(token, "Unexpected token: " + token.type + " (" + token.value + ")");
+        }
+        function expect_token(type, val) {
+            if (is(type, val)) {
+                return next();
+            }
+            token_error(S.token, "Unexpected token " + S.token.type + " «" + S.token.value + "»" + ", expected " + type + " «" + val + "»");
+        }
+        function expect(punc) {
+            return expect_token("punc", punc);
+        }
+        function can_insert_semicolon() {
+            return !options.strict && (S.token.nlb || is("eof") || is("punc", "}"));
+        }
+        function semicolon() {
+            if (is("punc", ";")) next(); else if (!can_insert_semicolon()) unexpected();
+        }
+        function parenthesised() {
+            expect("(");
+            var exp = expression(true);
+            expect(")");
+            return exp;
+        }
+        function embed_tokens(parser) {
+            return function() {
+                var start = S.token;
+                var expr = parser();
+                var end = prev();
+                expr.start = start;
+                expr.end = end;
+                return expr;
+            };
+        }
+        var statement = embed_tokens(function() {
+            var tmp;
+            if (is("operator", "/") || is("operator", "/=")) {
+                S.peeked = null;
+                S.token = S.input(S.token.value.substr(1));
+            }
+            switch (S.token.type) {
+              case "string":
+                var dir = S.in_directives, stat = simple_statement();
+                if (dir && stat.body instanceof AST_String && !is("punc", ",")) return new AST_Directive({
+                    value: stat.body.value
+                });
+                return stat;
+
+              case "num":
+              case "regexp":
+              case "operator":
+              case "atom":
+                return simple_statement();
+
+              case "name":
+                return is_token(peek(), "punc", ":") ? labeled_statement() : simple_statement();
+
+              case "punc":
+                switch (S.token.value) {
+                  case "{":
+                    return new AST_BlockStatement({
+                        start: S.token,
+                        body: block_(),
+                        end: prev()
+                    });
+
+                  case "[":
+                  case "(":
+                    return simple_statement();
+
+                  case ";":
+                    next();
+                    return new AST_EmptyStatement();
+
+                  default:
+                    unexpected();
+                }
+
+              case "keyword":
+                switch (tmp = S.token.value, next(), tmp) {
+                  case "break":
+                    return break_cont(AST_Break);
+
+                  case "continue":
+                    return break_cont(AST_Continue);
+
+                  case "debugger":
+                    semicolon();
+                    return new AST_Debugger();
+
+                  case "do":
+                    return new AST_Do({
+                        body: in_loop(statement),
+                        condition: (expect_token("keyword", "while"), tmp = parenthesised(), semicolon(),
+                        tmp)
+                    });
+
+                  case "while":
+                    return new AST_While({
+                        condition: parenthesised(),
+                        body: in_loop(statement)
+                    });
+
+                  case "for":
+                    return for_();
+
+                  case "function":
+                    return function_(true);
+
+                  case "if":
+                    return if_();
+
+                  case "return":
+                    if (S.in_function == 0) croak("'return' outside of function");
+                    return new AST_Return({
+                        value: is("punc", ";") ? (next(), null) : can_insert_semicolon() ? null : (tmp = expression(true),
+                        semicolon(), tmp)
+                    });
+
+                  case "switch":
+                    return new AST_Switch({
+                        expression: parenthesised(),
+                        body: in_loop(switch_body_)
+                    });
+
+                  case "throw":
+                    if (S.token.nlb) croak("Illegal newline after 'throw'");
+                    return new AST_Throw({
+                        value: (tmp = expression(true), semicolon(), tmp)
+                    });
+
+                  case "try":
+                    return try_();
+
+                  case "var":
+                    return tmp = var_(), semicolon(), tmp;
+
+                  case "const":
+                    return tmp = const_(), semicolon(), tmp;
+
+                  case "with":
+                    return new AST_With({
+                        expression: parenthesised(),
+                        body: statement()
+                    });
+
+                  default:
+                    unexpected();
+                }
+            }
+        });
+        function labeled_statement() {
+            var label = as_symbol(AST_Label);
+            if (find_if(function(l) {
+                return l.name == label.name;
+            }, S.labels)) {
+                croak("Label " + label.name + " defined twice");
+            }
+            expect(":");
+            S.labels.push(label);
+            var stat = statement();
+            S.labels.pop();
+            return new AST_LabeledStatement({
+                body: stat,
+                label: label
+            });
+        }
+        function simple_statement(tmp) {
+            return new AST_SimpleStatement({
+                body: (tmp = expression(true), semicolon(), tmp)
+            });
+        }
+        function break_cont(type) {
+            var label = null;
+            if (!can_insert_semicolon()) {
+                label = as_symbol(AST_LabelRef, true);
+            }
+            if (label != null) {
+                if (!find_if(function(l) {
+                    return l.name == label.name;
+                }, S.labels)) croak("Undefined label " + label.name);
+            } else if (S.in_loop == 0) croak(type.TYPE + " not inside a loop or switch");
+            semicolon();
+            return new type({
+                label: label
+            });
+        }
+        function for_() {
+            expect("(");
+            var init = null;
+            if (!is("punc", ";")) {
+                init = is("keyword", "var") ? (next(), var_(true)) : expression(true, true);
+                if (is("operator", "in")) {
+                    if (init instanceof AST_Var && init.definitions.length > 1) croak("Only one variable declaration allowed in for..in loop");
+                    next();
+                    return for_in(init);
+                }
+            }
+            return regular_for(init);
+        }
+        function regular_for(init) {
+            expect(";");
+            var test = is("punc", ";") ? null : expression(true);
+            expect(";");
+            var step = is("punc", ")") ? null : expression(true);
+            expect(")");
+            return new AST_For({
+                init: init,
+                condition: test,
+                step: step,
+                body: in_loop(statement)
+            });
+        }
+        function for_in(init) {
+            var lhs = init instanceof AST_Var ? init.definitions[0].name : null;
+            var obj = expression(true);
+            expect(")");
+            return new AST_ForIn({
+                init: init,
+                name: lhs,
+                object: obj,
+                body: in_loop(statement)
+            });
+        }
+        var function_ = function(in_statement, ctor) {
+            var is_accessor = ctor === AST_Accessor;
+            var name = is("name") ? as_symbol(in_statement ? AST_SymbolDefun : is_accessor ? AST_SymbolAccessor : AST_SymbolLambda) : is_accessor && (is("string") || is("num")) ? as_atom_node() : null;
+            if (in_statement && !name) unexpected();
+            expect("(");
+            if (!ctor) ctor = in_statement ? AST_Defun : AST_Function;
+            return new ctor({
+                name: name,
+                argnames: function(first, a) {
+                    while (!is("punc", ")")) {
+                        if (first) first = false; else expect(",");
+                        a.push(as_symbol(AST_SymbolFunarg));
+                    }
+                    next();
+                    return a;
+                }(true, []),
+                body: function(loop, labels) {
+                    ++S.in_function;
+                    S.in_directives = true;
+                    S.in_loop = 0;
+                    S.labels = [];
+                    var a = block_();
+                    --S.in_function;
+                    S.in_loop = loop;
+                    S.labels = labels;
+                    return a;
+                }(S.in_loop, S.labels)
+            });
+        };
+        function if_() {
+            var cond = parenthesised(), body = statement(), belse = null;
+            if (is("keyword", "else")) {
+                next();
+                belse = statement();
+            }
+            return new AST_If({
+                condition: cond,
+                body: body,
+                alternative: belse
+            });
+        }
+        function block_() {
+            expect("{");
+            var a = [];
+            while (!is("punc", "}")) {
+                if (is("eof")) unexpected();
+                a.push(statement());
+            }
+            next();
+            return a;
+        }
+        function switch_body_() {
+            expect("{");
+            var a = [], cur = null, branch = null, tmp;
+            while (!is("punc", "}")) {
+                if (is("eof")) unexpected();
+                if (is("keyword", "case")) {
+                    if (branch) branch.end = prev();
+                    cur = [];
+                    branch = new AST_Case({
+                        start: (tmp = S.token, next(), tmp),
+                        expression: expression(true),
+                        body: cur
+                    });
+                    a.push(branch);
+                    expect(":");
+                } else if (is("keyword", "default")) {
+                    if (branch) branch.end = prev();
+                    cur = [];
+                    branch = new AST_Default({
+                        start: (tmp = S.token, next(), expect(":"), tmp),
+                        body: cur
+                    });
+                    a.push(branch);
+                } else {
+                    if (!cur) unexpected();
+                    cur.push(statement());
+                }
+            }
+            if (branch) branch.end = prev();
+            next();
+            return a;
+        }
+        function try_() {
+            var body = block_(), bcatch = null, bfinally = null;
+            if (is("keyword", "catch")) {
+                var start = S.token;
+                next();
+                expect("(");
+                var name = as_symbol(AST_SymbolCatch);
+                expect(")");
+                bcatch = new AST_Catch({
+                    start: start,
+                    argname: name,
+                    body: block_(),
+                    end: prev()
+                });
+            }
+            if (is("keyword", "finally")) {
+                var start = S.token;
+                next();
+                bfinally = new AST_Finally({
+                    start: start,
+                    body: block_(),
+                    end: prev()
+                });
+            }
+            if (!bcatch && !bfinally) croak("Missing catch/finally blocks");
+            return new AST_Try({
+                body: body,
+                bcatch: bcatch,
+                bfinally: bfinally
+            });
+        }
+        function vardefs(no_in, in_const) {
+            var a = [];
+            for (;;) {
+                a.push(new AST_VarDef({
+                    start: S.token,
+                    name: as_symbol(in_const ? AST_SymbolConst : AST_SymbolVar),
+                    value: is("operator", "=") ? (next(), expression(false, no_in)) : null,
+                    end: prev()
+                }));
+                if (!is("punc", ",")) break;
+                next();
+            }
+            return a;
+        }
+        var var_ = function(no_in) {
+            return new AST_Var({
+                start: prev(),
+                definitions: vardefs(no_in, false),
+                end: prev()
+            });
+        };
+        var const_ = function() {
+            return new AST_Const({
+                start: prev(),
+                definitions: vardefs(false, true),
+                end: prev()
+            });
+        };
+        var new_ = function() {
+            var start = S.token;
+            expect_token("operator", "new");
+            var newexp = expr_atom(false), args;
+            if (is("punc", "(")) {
+                next();
+                args = expr_list(")");
+            } else {
+                args = [];
+            }
+            return subscripts(new AST_New({
+                start: start,
+                expression: newexp,
+                args: args,
+                end: prev()
+            }), true);
+        };
+        function as_atom_node() {
+            var tok = S.token, ret;
+            switch (tok.type) {
+              case "name":
+                return as_symbol(AST_SymbolRef);
+
+              case "num":
+                ret = new AST_Number({
+                    start: tok,
+                    end: tok,
+                    value: tok.value
+                });
+                break;
+
+              case "string":
+                ret = new AST_String({
+                    start: tok,
+                    end: tok,
+                    value: tok.value
+                });
+                break;
+
+              case "regexp":
+                ret = new AST_RegExp({
+                    start: tok,
+                    end: tok,
+                    value: tok.value
+                });
+                break;
+
+              case "atom":
+                switch (tok.value) {
+                  case "false":
+                    ret = new AST_False({
+                        start: tok,
+                        end: tok
+                    });
+                    break;
+
+                  case "true":
+                    ret = new AST_True({
+                        start: tok,
+                        end: tok
+                    });
+                    break;
+
+                  case "null":
+                    ret = new AST_Null({
+                        start: tok,
+                        end: tok
+                    });
+                    break;
+                }
+                break;
+            }
+            next();
+            return ret;
+        }
+        var expr_atom = function(allow_calls) {
+            if (is("operator", "new")) {
+                return new_();
+            }
+            var start = S.token;
+            if (is("punc")) {
+                switch (start.value) {
+                  case "(":
+                    next();
+                    var ex = expression(true);
+                    ex.start = start;
+                    ex.end = S.token;
+                    expect(")");
+                    return subscripts(ex, allow_calls);
+
+                  case "[":
+                    return subscripts(array_(), allow_calls);
+
+                  case "{":
+                    return subscripts(object_(), allow_calls);
+                }
+                unexpected();
+            }
+            if (is("keyword", "function")) {
+                next();
+                var func = function_(false);
+                func.start = start;
+                func.end = prev();
+                return subscripts(func, allow_calls);
+            }
+            if (ATOMIC_START_TOKEN[S.token.type]) {
+                return subscripts(as_atom_node(), allow_calls);
+            }
+            unexpected();
+        };
+        function expr_list(closing, allow_trailing_comma, allow_empty) {
+            var first = true, a = [];
+            while (!is("punc", closing)) {
+                if (first) first = false; else expect(",");
+                if (allow_trailing_comma && is("punc", closing)) break;
+                if (is("punc", ",") && allow_empty) {
+                    a.push(new AST_Hole({
+                        start: S.token,
+                        end: S.token
+                    }));
+                } else {
+                    a.push(expression(false));
+                }
+            }
+            next();
+            return a;
+        }
+        var array_ = embed_tokens(function() {
+            expect("[");
+            return new AST_Array({
+                elements: expr_list("]", !options.strict, true)
+            });
+        });
+        var object_ = embed_tokens(function() {
+            expect("{");
+            var first = true, a = [];
+            while (!is("punc", "}")) {
+                if (first) first = false; else expect(",");
+                if (!options.strict && is("punc", "}")) break;
+                var start = S.token;
+                var type = start.type;
+                var name = as_property_name();
+                if (type == "name" && !is("punc", ":")) {
+                    if (name == "get") {
+                        a.push(new AST_ObjectGetter({
+                            start: start,
+                            key: name,
+                            value: function_(false, AST_Accessor),
+                            end: prev()
+                        }));
+                        continue;
+                    }
+                    if (name == "set") {
+                        a.push(new AST_ObjectSetter({
+                            start: start,
+                            key: name,
+                            value: function_(false, AST_Accessor),
+                            end: prev()
+                        }));
+                        continue;
+                    }
+                }
+                expect(":");
+                a.push(new AST_ObjectKeyVal({
+                    start: start,
+                    key: name,
+                    value: expression(false),
+                    end: prev()
+                }));
+            }
+            next();
+            return new AST_Object({
+                properties: a
+            });
+        });
+        function as_property_name() {
+            var tmp = S.token;
+            next();
+            switch (tmp.type) {
+              case "num":
+              case "string":
+              case "name":
+              case "operator":
+              case "keyword":
+              case "atom":
+                return tmp.value;
+
+              default:
+                unexpected();
+            }
+        }
+        function as_name() {
+            var tmp = S.token;
+            next();
+            switch (tmp.type) {
+              case "name":
+              case "operator":
+              case "keyword":
+              case "atom":
+                return tmp.value;
+
+              default:
+                unexpected();
+            }
+        }
+        function as_symbol(type, noerror) {
+            if (!is("name")) {
+                if (!noerror) croak("Name expected");
+                return null;
+            }
+            var name = S.token.value;
+            var sym = new (name == "this" ? AST_This : type)({
+                name: String(S.token.value),
+                start: S.token,
+                end: S.token
+            });
+            next();
+            return sym;
+        }
+        var subscripts = function(expr, allow_calls) {
+            var start = expr.start;
+            if (is("punc", ".")) {
+                next();
+                return subscripts(new AST_Dot({
+                    start: start,
+                    expression: expr,
+                    property: as_name(),
+                    end: prev()
+                }), allow_calls);
+            }
+            if (is("punc", "[")) {
+                next();
+                var prop = expression(true);
+                expect("]");
+                return subscripts(new AST_Sub({
+                    start: start,
+                    expression: expr,
+                    property: prop,
+                    end: prev()
+                }), allow_calls);
+            }
+            if (allow_calls && is("punc", "(")) {
+                next();
+                return subscripts(new AST_Call({
+                    start: start,
+                    expression: expr,
+                    args: expr_list(")"),
+                    end: prev()
+                }), true);
+            }
+            return expr;
+        };
+        var maybe_unary = function(allow_calls) {
+            var start = S.token;
+            if (is("operator") && UNARY_PREFIX(start.value)) {
+                next();
+                var ex = make_unary(AST_UnaryPrefix, start.value, maybe_unary(allow_calls));
+                ex.start = start;
+                ex.end = prev();
+                return ex;
+            }
+            var val = expr_atom(allow_calls);
+            while (is("operator") && UNARY_POSTFIX(S.token.value) && !S.token.nlb) {
+                val = make_unary(AST_UnaryPostfix, S.token.value, val);
+                val.start = start;
+                val.end = S.token;
+                next();
+            }
+            return val;
+        };
+        function make_unary(ctor, op, expr) {
+            if ((op == "++" || op == "--") && !is_assignable(expr)) croak("Invalid use of " + op + " operator");
+            return new ctor({
+                operator: op,
+                expression: expr
+            });
+        }
+        var expr_op = function(left, min_prec, no_in) {
+            var op = is("operator") ? S.token.value : null;
+            if (op == "in" && no_in) op = null;
+            var prec = op != null ? PRECEDENCE[op] : null;
+            if (prec != null && prec > min_prec) {
+                next();
+                var right = expr_op(maybe_unary(true), prec, no_in);
+                return expr_op(new AST_Binary({
+                    start: left.start,
+                    left: left,
+                    operator: op,
+                    right: right,
+                    end: right.end
+                }), min_prec, no_in);
+            }
+            return left;
+        };
+        function expr_ops(no_in) {
+            return expr_op(maybe_unary(true), 0, no_in);
+        }
+        var maybe_conditional = function(no_in) {
+            var start = S.token;
+            var expr = expr_ops(no_in);
+            if (is("operator", "?")) {
+                next();
+                var yes = expression(false);
+                expect(":");
+                return new AST_Conditional({
+                    start: start,
+                    condition: expr,
+                    consequent: yes,
+                    alternative: expression(false, no_in),
+                    end: peek()
+                });
+            }
+            return expr;
+        };
+        function is_assignable(expr) {
+            if (!options.strict) return true;
+            if (expr instanceof AST_This) return false;
+            return expr instanceof AST_PropAccess || expr instanceof AST_Symbol;
+        }
+        var maybe_assign = function(no_in) {
+            var start = S.token;
+            var left = maybe_conditional(no_in), val = S.token.value;
+            if (is("operator") && ASSIGNMENT(val)) {
+                if (is_assignable(left)) {
+                    next();
+                    return new AST_Assign({
+                        start: start,
+                        left: left,
+                        operator: val,
+                        right: maybe_assign(no_in),
+                        end: prev()
+                    });
+                }
+                croak("Invalid assignment");
+            }
+            return left;
+        };
+        var expression = function(commas, no_in) {
+            var start = S.token;
+            var expr = maybe_assign(no_in);
+            if (commas && is("punc", ",")) {
+                next();
+                return new AST_Seq({
+                    start: start,
+                    car: expr,
+                    cdr: expression(true, no_in),
+                    end: peek()
+                });
+            }
+            return expr;
+        };
+        function in_loop(cont) {
+            ++S.in_loop;
+            var ret = cont();
+            --S.in_loop;
+            return ret;
+        }
+        if (options.expression) {
+            return expression(true);
+        }
+        return function() {
+            var start = S.token;
+            var body = [];
+            while (!is("eof")) body.push(statement());
+            var end = prev();
+            var toplevel = options.toplevel;
+            if (toplevel) {
+                toplevel.body = toplevel.body.concat(body);
+                toplevel.end = end;
+            } else {
+                toplevel = new AST_Toplevel({
+                    start: start,
+                    body: body,
+                    end: end
+                });
+            }
+            return toplevel;
+        }();
+    }
+    "use strict";
+    function TreeTransformer(before, after) {
+        TreeWalker.call(this);
+        this.before = before;
+        this.after = after;
+    }
+    TreeTransformer.prototype = new TreeWalker();
+    (function(undefined) {
+        function _(node, descend) {
+            node.DEFMETHOD("transform", function(tw, in_list) {
+                var x, y;
+                tw.push(this);
+                if (tw.before) x = tw.before(this, descend, in_list);
+                if (x === undefined) {
+                    if (!tw.after) {
+                        x = this;
+                        descend(x, tw);
+                    } else {
+                        tw.stack[tw.stack.length - 1] = x = this.clone();
+                        descend(x, tw);
+                        y = tw.after(x, in_list);
+                        if (y !== undefined) x = y;
+                    }
+                }
+                tw.pop();
+                return x;
+            });
+        }
+        function do_list(list, tw) {
+            return MAP(list, function(node) {
+                return node.transform(tw, true);
+            });
+        }
+        _(AST_Node, noop);
+        _(AST_LabeledStatement, function(self, tw) {
+            self.label = self.label.transform(tw);
+            self.body = self.body.transform(tw);
+        });
+        _(AST_SimpleStatement, function(self, tw) {
+            self.body = self.body.transform(tw);
+        });
+        _(AST_Block, function(self, tw) {
+            self.body = do_list(self.body, tw);
+        });
+        _(AST_DWLoop, function(self, tw) {
+            self.condition = self.condition.transform(tw);
+            self.body = self.body.transform(tw);
+        });
+        _(AST_For, function(self, tw) {
+            if (self.init) self.init = self.init.transform(tw);
+            if (self.condition) self.condition = self.condition.transform(tw);
+            if (self.step) self.step = self.step.transform(tw);
+            self.body = self.body.transform(tw);
+        });
+        _(AST_ForIn, function(self, tw) {
+            self.init = self.init.transform(tw);
+            self.object = self.object.transform(tw);
+            self.body = self.body.transform(tw);
+        });
+        _(AST_With, function(self, tw) {
+            self.expression = self.expression.transform(tw);
+            self.body = self.body.transform(tw);
+        });
+        _(AST_Exit, function(self, tw) {
+            if (self.value) self.value = self.value.transform(tw);
+        });
+        _(AST_LoopControl, function(self, tw) {
+            if (self.label) self.label = self.label.transform(tw);
+        });
+        _(AST_If, function(self, tw) {
+            self.condition = self.condition.transform(tw);
+            self.body = self.body.transform(tw);
+            if (self.alternative) self.alternative = self.alternative.transform(tw);
+        });
+        _(AST_Switch, function(self, tw) {
+            self.expression = self.expression.transform(tw);
+            self.body = do_list(self.body, tw);
+        });
+        _(AST_Case, function(self, tw) {
+            self.expression = self.expression.transform(tw);
+            self.body = do_list(self.body, tw);
+        });
+        _(AST_Try, function(self, tw) {
+            self.body = do_list(self.body, tw);
+            if (self.bcatch) self.bcatch = self.bcatch.transform(tw);
+            if (self.bfinally) self.bfinally = self.bfinally.transform(tw);
+        });
+        _(AST_Catch, function(self, tw) {
+            self.argname = self.argname.transform(tw);
+            self.body = do_list(self.body, tw);
+        });
+        _(AST_Definitions, function(self, tw) {
+            self.definitions = do_list(self.definitions, tw);
+        });
+        _(AST_VarDef, function(self, tw) {
+            self.name = self.name.transform(tw);
+            if (self.value) self.value = self.value.transform(tw);
+        });
+        _(AST_Lambda, function(self, tw) {
+            if (self.name) self.name = self.name.transform(tw);
+            self.argnames = do_list(self.argnames, tw);
+            self.body = do_list(self.body, tw);
+        });
+        _(AST_Call, function(self, tw) {
+            self.expression = self.expression.transform(tw);
+            self.args = do_list(self.args, tw);
+        });
+        _(AST_Seq, function(self, tw) {
+            self.car = self.car.transform(tw);
+            self.cdr = self.cdr.transform(tw);
+        });
+        _(AST_Dot, function(self, tw) {
+            self.expression = self.expression.transform(tw);
+        });
+        _(AST_Sub, function(self, tw) {
+            self.expression = self.expression.transform(tw);
+            self.property = self.property.transform(tw);
+        });
+        _(AST_Unary, function(self, tw) {
+            self.expression = self.expression.transform(tw);
+        });
+        _(AST_Binary, function(self, tw) {
+            self.left = self.left.transform(tw);
+            self.right = self.right.transform(tw);
+        });
+        _(AST_Conditional, function(self, tw) {
+            self.condition = self.condition.transform(tw);
+            self.consequent = self.consequent.transform(tw);
+            self.alternative = self.alternative.transform(tw);
+        });
+        _(AST_Array, function(self, tw) {
+            self.elements = do_list(self.elements, tw);
+        });
+        _(AST_Object, function(self, tw) {
+            self.properties = do_list(self.properties, tw);
+        });
+        _(AST_ObjectProperty, function(self, tw) {
+            self.value = self.value.transform(tw);
+        });
+    })();
+    "use strict";
+    function SymbolDef(scope, index, orig) {
+        this.name = orig.name;
+        this.orig = [ orig ];
+        this.scope = scope;
+        this.references = [];
+        this.global = false;
+        this.mangled_name = null;
+        this.undeclared = false;
+        this.constant = false;
+        this.index = index;
+    }
+    SymbolDef.prototype = {
+        unmangleable: function(options) {
+            return this.global && !(options && options.toplevel) || this.undeclared || !(options && options.eval) && (this.scope.uses_eval || this.scope.uses_with);
+        },
+        mangle: function(options) {
+            if (!this.mangled_name && !this.unmangleable(options)) {
+                var s = this.scope;
+                if (this.orig[0] instanceof AST_SymbolLambda && !options.screw_ie8) s = s.parent_scope;
+                this.mangled_name = s.next_mangled(options);
+            }
+        }
+    };
+    AST_Toplevel.DEFMETHOD("figure_out_scope", function() {
+        var self = this;
+        var scope = self.parent_scope = null;
+        var labels = new Dictionary();
+        var nesting = 0;
+        var tw = new TreeWalker(function(node, descend) {
+            if (node instanceof AST_Scope) {
+                node.init_scope_vars(nesting);
+                var save_scope = node.parent_scope = scope;
+                var save_labels = labels;
+                ++nesting;
+                scope = node;
+                labels = new Dictionary();
+                descend();
+                labels = save_labels;
+                scope = save_scope;
+                --nesting;
+                return true;
+            }
+            if (node instanceof AST_Directive) {
+                node.scope = scope;
+                push_uniq(scope.directives, node.value);
+                return true;
+            }
+            if (node instanceof AST_With) {
+                for (var s = scope; s; s = s.parent_scope) s.uses_with = true;
+                return;
+            }
+            if (node instanceof AST_LabeledStatement) {
+                var l = node.label;
+                if (labels.has(l.name)) throw new Error(string_template("Label {name} defined twice", l));
+                labels.set(l.name, l);
+                descend();
+                labels.del(l.name);
+                return true;
+            }
+            if (node instanceof AST_Symbol) {
+                node.scope = scope;
+            }
+            if (node instanceof AST_Label) {
+                node.thedef = node;
+                node.init_scope_vars();
+            }
+            if (node instanceof AST_SymbolLambda) {
+                scope.def_function(node);
+            } else if (node instanceof AST_SymbolDefun) {
+                (node.scope = scope.parent_scope).def_function(node);
+            } else if (node instanceof AST_SymbolVar || node instanceof AST_SymbolConst) {
+                var def = scope.def_variable(node);
+                def.constant = node instanceof AST_SymbolConst;
+                def.init = tw.parent().value;
+            } else if (node instanceof AST_SymbolCatch) {
+                scope.def_variable(node);
+            }
+            if (node instanceof AST_LabelRef) {
+                var sym = labels.get(node.name);
+                if (!sym) throw new Error(string_template("Undefined label {name} [{line},{col}]", {
+                    name: node.name,
+                    line: node.start.line,
+                    col: node.start.col
+                }));
+                node.thedef = sym;
+            }
+        });
+        self.walk(tw);
+        var func = null;
+        var globals = self.globals = new Dictionary();
+        var tw = new TreeWalker(function(node, descend) {
+            if (node instanceof AST_Lambda) {
+                var prev_func = func;
+                func = node;
+                descend();
+                func = prev_func;
+                return true;
+            }
+            if (node instanceof AST_LabelRef) {
+                node.reference();
+                return true;
+            }
+            if (node instanceof AST_SymbolRef) {
+                var name = node.name;
+                var sym = node.scope.find_variable(name);
+                if (!sym) {
+                    var g;
+                    if (globals.has(name)) {
+                        g = globals.get(name);
+                    } else {
+                        g = new SymbolDef(self, globals.size(), node);
+                        g.undeclared = true;
+                        g.global = true;
+                        globals.set(name, g);
+                    }
+                    node.thedef = g;
+                    if (name == "eval" && tw.parent() instanceof AST_Call) {
+                        for (var s = node.scope; s && !s.uses_eval; s = s.parent_scope) s.uses_eval = true;
+                    }
+                    if (name == "arguments") {
+                        func.uses_arguments = true;
+                    }
+                } else {
+                    node.thedef = sym;
+                }
+                node.reference();
+                return true;
+            }
+        });
+        self.walk(tw);
+    });
+    AST_Scope.DEFMETHOD("init_scope_vars", function(nesting) {
+        this.directives = [];
+        this.variables = new Dictionary();
+        this.functions = new Dictionary();
+        this.uses_with = false;
+        this.uses_eval = false;
+        this.parent_scope = null;
+        this.enclosed = [];
+        this.cname = -1;
+        this.nesting = nesting;
+    });
+    AST_Scope.DEFMETHOD("strict", function() {
+        return this.has_directive("use strict");
+    });
+    AST_Lambda.DEFMETHOD("init_scope_vars", function() {
+        AST_Scope.prototype.init_scope_vars.apply(this, arguments);
+        this.uses_arguments = false;
+    });
+    AST_SymbolRef.DEFMETHOD("reference", function() {
+        var def = this.definition();
+        def.references.push(this);
+        var s = this.scope;
+        while (s) {
+            push_uniq(s.enclosed, def);
+            if (s === def.scope) break;
+            s = s.parent_scope;
+        }
+        this.frame = this.scope.nesting - def.scope.nesting;
+    });
+    AST_Label.DEFMETHOD("init_scope_vars", function() {
+        this.references = [];
+    });
+    AST_LabelRef.DEFMETHOD("reference", function() {
+        this.thedef.references.push(this);
+    });
+    AST_Scope.DEFMETHOD("find_variable", function(name) {
+        if (name instanceof AST_Symbol) name = name.name;
+        return this.variables.get(name) || this.parent_scope && this.parent_scope.find_variable(name);
+    });
+    AST_Scope.DEFMETHOD("has_directive", function(value) {
+        return this.parent_scope && this.parent_scope.has_directive(value) || (this.directives.indexOf(value) >= 0 ? this : null);
+    });
+    AST_Scope.DEFMETHOD("def_function", function(symbol) {
+        this.functions.set(symbol.name, this.def_variable(symbol));
+    });
+    AST_Scope.DEFMETHOD("def_variable", function(symbol) {
+        var def;
+        if (!this.variables.has(symbol.name)) {
+            def = new SymbolDef(this, this.variables.size(), symbol);
+            this.variables.set(symbol.name, def);
+            def.global = !this.parent_scope;
+        } else {
+            def = this.variables.get(symbol.name);
+            def.orig.push(symbol);
+        }
+        return symbol.thedef = def;
+    });
+    AST_Scope.DEFMETHOD("next_mangled", function(options) {
+        var ext = this.enclosed;
+        out: while (true) {
+            var m = base54(++this.cname);
+            if (!is_identifier(m)) continue;
+            for (var i = ext.length; --i >= 0; ) {
+                var sym = ext[i];
+                var name = sym.mangled_name || sym.unmangleable(options) && sym.name;
+                if (m == name) continue out;
+            }
+            return m;
+        }
+    });
+    AST_Scope.DEFMETHOD("references", function(sym) {
+        if (sym instanceof AST_Symbol) sym = sym.definition();
+        return this.enclosed.indexOf(sym) < 0 ? null : sym;
+    });
+    AST_Symbol.DEFMETHOD("unmangleable", function(options) {
+        return this.definition().unmangleable(options);
+    });
+    AST_SymbolAccessor.DEFMETHOD("unmangleable", function() {
+        return true;
+    });
+    AST_Label.DEFMETHOD("unmangleable", function() {
+        return false;
+    });
+    AST_Symbol.DEFMETHOD("unreferenced", function() {
+        return this.definition().references.length == 0 && !(this.scope.uses_eval || this.scope.uses_with);
+    });
+    AST_Symbol.DEFMETHOD("undeclared", function() {
+        return this.definition().undeclared;
+    });
+    AST_LabelRef.DEFMETHOD("undeclared", function() {
+        return false;
+    });
+    AST_Label.DEFMETHOD("undeclared", function() {
+        return false;
+    });
+    AST_Symbol.DEFMETHOD("definition", function() {
+        return this.thedef;
+    });
+    AST_Symbol.DEFMETHOD("global", function() {
+        return this.definition().global;
+    });
+    AST_Toplevel.DEFMETHOD("_default_mangler_options", function(options) {
+        return defaults(options, {
+            except: [],
+            eval: false,
+            sort: false,
+            toplevel: false,
+            screw_ie8: false
+        });
+    });
+    AST_Toplevel.DEFMETHOD("mangle_names", function(options) {
+        options = this._default_mangler_options(options);
+        var lname = -1;
+        var to_mangle = [];
+        var tw = new TreeWalker(function(node, descend) {
+            if (node instanceof AST_LabeledStatement) {
+                var save_nesting = lname;
+                descend();
+                lname = save_nesting;
+                return true;
+            }
+            if (node instanceof AST_Scope) {
+                var p = tw.parent(), a = [];
+                node.variables.each(function(symbol) {
+                    if (options.except.indexOf(symbol.name) < 0) {
+                        a.push(symbol);
+                    }
+                });
+                if (options.sort) a.sort(function(a, b) {
+                    return b.references.length - a.references.length;
+                });
+                to_mangle.push.apply(to_mangle, a);
+                return;
+            }
+            if (node instanceof AST_Label) {
+                var name;
+                do name = base54(++lname); while (!is_identifier(name));
+                node.mangled_name = name;
+                return true;
+            }
+        });
+        this.walk(tw);
+        to_mangle.forEach(function(def) {
+            def.mangle(options);
+        });
+    });
+    AST_Toplevel.DEFMETHOD("compute_char_frequency", function(options) {
+        options = this._default_mangler_options(options);
+        var tw = new TreeWalker(function(node) {
+            if (node instanceof AST_Constant) base54.consider(node.print_to_string()); else if (node instanceof AST_Return) base54.consider("return"); else if (node instanceof AST_Throw) base54.consider("throw"); else if (node instanceof AST_Continue) base54.consider("continue"); else if (node instanceof AST_Break) base54.consider("break"); else if (node instanceof AST_Debugger) base54.consider("debugger"); else if (node instanceof AST_Directive) base54.consider(node.value); else if (node instanceof AST_While) base54.consider("while"); else if (node instanceof AST_Do) base54.consider("do while"); else if (node instanceof AST_If) {
+                base54.consider("if");
+                if (node.alternative) base54.consider("else");
+            } else if (node instanceof AST_Var) base54.consider("var"); else if (node instanceof AST_Const) base54.consider("const"); else if (node instanceof AST_Lambda) base54.consider("function"); else if (node instanceof AST_For) base54.consider("for"); else if (node instanceof AST_ForIn) base54.consider("for in"); else if (node instanceof AST_Switch) base54.consider("switch"); else if (node instanceof AST_Case) base54.consider("case"); else if (node instanceof AST_Default) base54.consider("default"); else if (node instanceof AST_With) base54.consider("with"); else if (node instanceof AST_ObjectSetter) base54.consider("set" + node.key); else if (node instanceof AST_ObjectGetter) base54.consider("get" + node.key); else if (node instanceof AST_ObjectKeyVal) base54.consider(node.key); else if (node instanceof AST_New) base54.consider("new"); else if (node instanceof AST_This) base54.consider("this"); else if (node instanceof AST_Try) base54.consider("try"); else if (node instanceof AST_Catch) base54.consider("catch"); else if (node instanceof AST_Finally) base54.consider("finally"); else if (node instanceof AST_Symbol && node.unmangleable(options)) base54.consider(node.name); else if (node instanceof AST_Unary || node instanceof AST_Binary) base54.consider(node.operator); else if (node instanceof AST_Dot) base54.consider(node.property);
+        });
+        this.walk(tw);
+        base54.sort();
+    });
+    var base54 = function() {
+        var string = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_0123456789";
+        var chars, frequency;
+        function reset() {
+            frequency = Object.create(null);
+            chars = string.split("").map(function(ch) {
+                return ch.charCodeAt(0);
+            });
+            chars.forEach(function(ch) {
+                frequency[ch] = 0;
+            });
+        }
+        base54.consider = function(str) {
+            for (var i = str.length; --i >= 0; ) {
+                var code = str.charCodeAt(i);
+                if (code in frequency) ++frequency[code];
+            }
+        };
+        base54.sort = function() {
+            chars = mergeSort(chars, function(a, b) {
+                if (is_digit(a) && !is_digit(b)) return 1;
+                if (is_digit(b) && !is_digit(a)) return -1;
+                return frequency[b] - frequency[a];
+            });
+        };
+        base54.reset = reset;
+        reset();
+        base54.get = function() {
+            return chars;
+        };
+        base54.freq = function() {
+            return frequency;
+        };
+        function base54(num) {
+            var ret = "", base = 54;
+            do {
+                ret += String.fromCharCode(chars[num % base]);
+                num = Math.floor(num / base);
+                base = 64;
+            } while (num > 0);
+            return ret;
+        }
+        return base54;
+    }();
+    AST_Toplevel.DEFMETHOD("scope_warnings", function(options) {
+        options = defaults(options, {
+            undeclared: false,
+            unreferenced: true,
+            assign_to_global: true,
+            func_arguments: true,
+            nested_defuns: true,
+            eval: true
+        });
+        var tw = new TreeWalker(function(node) {
+            if (options.undeclared && node instanceof AST_SymbolRef && node.undeclared()) {
+                AST_Node.warn("Undeclared symbol: {name} [{file}:{line},{col}]", {
+                    name: node.name,
+                    file: node.start.file,
+                    line: node.start.line,
+                    col: node.start.col
+                });
+            }
+            if (options.assign_to_global) {
+                var sym = null;
+                if (node instanceof AST_Assign && node.left instanceof AST_SymbolRef) sym = node.left; else if (node instanceof AST_ForIn && node.init instanceof AST_SymbolRef) sym = node.init;
+                if (sym && (sym.undeclared() || sym.global() && sym.scope !== sym.definition().scope)) {
+                    AST_Node.warn("{msg}: {name} [{file}:{line},{col}]", {
+                        msg: sym.undeclared() ? "Accidental global?" : "Assignment to global",
+                        name: sym.name,
+                        file: sym.start.file,
+                        line: sym.start.line,
+                        col: sym.start.col
+                    });
+                }
+            }
+            if (options.eval && node instanceof AST_SymbolRef && node.undeclared() && node.name == "eval") {
+                AST_Node.warn("Eval is used [{file}:{line},{col}]", node.start);
+            }
+            if (options.unreferenced && (node instanceof AST_SymbolDeclaration || node instanceof AST_Label) && node.unreferenced()) {
+                AST_Node.warn("{type} {name} is declared but not referenced [{file}:{line},{col}]", {
+                    type: node instanceof AST_Label ? "Label" : "Symbol",
+                    name: node.name,
+                    file: node.start.file,
+                    line: node.start.line,
+                    col: node.start.col
+                });
+            }
+            if (options.func_arguments && node instanceof AST_Lambda && node.uses_arguments) {
+                AST_Node.warn("arguments used in function {name} [{file}:{line},{col}]", {
+                    name: node.name ? node.name.name : "anonymous",
+                    file: node.start.file,
+                    line: node.start.line,
+                    col: node.start.col
+                });
+            }
+            if (options.nested_defuns && node instanceof AST_Defun && !(tw.parent() instanceof AST_Scope)) {
+                AST_Node.warn('Function {name} declared in nested statement "{type}" [{file}:{line},{col}]', {
+                    name: node.name.name,
+                    type: tw.parent().TYPE,
+                    file: node.start.file,
+                    line: node.start.line,
+                    col: node.start.col
+                });
+            }
+        });
+        this.walk(tw);
+    });
+    "use strict";
+    function OutputStream(options) {
+        options = defaults(options, {
+            indent_start: 0,
+            indent_level: 4,
+            quote_keys: false,
+            space_colon: true,
+            ascii_only: false,
+            inline_script: false,
+            width: 80,
+            max_line_len: 32e3,
+            beautify: false,
+            source_map: null,
+            bracketize: false,
+            semicolons: true,
+            comments: false,
+            preserve_line: false,
+            screw_ie8: false
+        }, true);
+        var indentation = 0;
+        var current_col = 0;
+        var current_line = 1;
+        var current_pos = 0;
+        var OUTPUT = "";
+        function to_ascii(str, identifier) {
+            return str.replace(/[\u0080-\uffff]/g, function(ch) {
+                var code = ch.charCodeAt(0).toString(16);
+                if (code.length <= 2 && !identifier) {
+                    while (code.length < 2) code = "0" + code;
+                    return "\\x" + code;
+                } else {
+                    while (code.length < 4) code = "0" + code;
+                    return "\\u" + code;
+                }
+            });
+        }
+        function make_string(str) {
+            var dq = 0, sq = 0;
+            str = str.replace(/[\\\b\f\n\r\t\x22\x27\u2028\u2029\0]/g, function(s) {
+                switch (s) {
+                  case "\\":
+                    return "\\\\";
+
+                  case "\b":
+                    return "\\b";
+
+                  case "\f":
+                    return "\\f";
+
+                  case "\n":
+                    return "\\n";
+
+                  case "\r":
+                    return "\\r";
+
+                  case "\u2028":
+                    return "\\u2028";
+
+                  case "\u2029":
+                    return "\\u2029";
+
+                  case '"':
+                    ++dq;
+                    return '"';
+
+                  case "'":
+                    ++sq;
+                    return "'";
+
+                  case "\x00":
+                    return "\\x00";
+                }
+                return s;
+            });
+            if (options.ascii_only) str = to_ascii(str);
+            if (dq > sq) return "'" + str.replace(/\x27/g, "\\'") + "'"; else return '"' + str.replace(/\x22/g, '\\"') + '"';
+        }
+        function encode_string(str) {
+            var ret = make_string(str);
+            if (options.inline_script) ret = ret.replace(/<\x2fscript([>\/\t\n\f\r ])/gi, "<\\/script$1");
+            return ret;
+        }
+        function make_name(name) {
+            name = name.toString();
+            if (options.ascii_only) name = to_ascii(name, true);
+            return name;
+        }
+        function make_indent(back) {
+            return repeat_string(" ", options.indent_start + indentation - back * options.indent_level);
+        }
+        var might_need_space = false;
+        var might_need_semicolon = false;
+        var last = null;
+        function last_char() {
+            return last.charAt(last.length - 1);
+        }
+        function maybe_newline() {
+            if (options.max_line_len && current_col > options.max_line_len) print("\n");
+        }
+        var requireSemicolonChars = makePredicate("( [ + * / - , .");
+        function print(str) {
+            str = String(str);
+            var ch = str.charAt(0);
+            if (might_need_semicolon) {
+                if ((!ch || ";}".indexOf(ch) < 0) && !/[;]$/.test(last)) {
+                    if (options.semicolons || requireSemicolonChars(ch)) {
+                        OUTPUT += ";";
+                        current_col++;
+                        current_pos++;
+                    } else {
+                        OUTPUT += "\n";
+                        current_pos++;
+                        current_line++;
+                        current_col = 0;
+                    }
+                    if (!options.beautify) might_need_space = false;
+                }
+                might_need_semicolon = false;
+                maybe_newline();
+            }
+            if (!options.beautify && options.preserve_line && stack[stack.length - 1]) {
+                var target_line = stack[stack.length - 1].start.line;
+                while (current_line < target_line) {
+                    OUTPUT += "\n";
+                    current_pos++;
+                    current_line++;
+                    current_col = 0;
+                    might_need_space = false;
+                }
+            }
+            if (might_need_space) {
+                var prev = last_char();
+                if (is_identifier_char(prev) && (is_identifier_char(ch) || ch == "\\") || /^[\+\-\/]$/.test(ch) && ch == prev) {
+                    OUTPUT += " ";
+                    current_col++;
+                    current_pos++;
+                }
+                might_need_space = false;
+            }
+            var a = str.split(/\r?\n/), n = a.length - 1;
+            current_line += n;
+            if (n == 0) {
+                current_col += a[n].length;
+            } else {
+                current_col = a[n].length;
+            }
+            current_pos += str.length;
+            last = str;
+            OUTPUT += str;
+        }
+        var space = options.beautify ? function() {
+            print(" ");
+        } : function() {
+            might_need_space = true;
+        };
+        var indent = options.beautify ? function(half) {
+            if (options.beautify) {
+                print(make_indent(half ? .5 : 0));
+            }
+        } : noop;
+        var with_indent = options.beautify ? function(col, cont) {
+            if (col === true) col = next_indent();
+            var save_indentation = indentation;
+            indentation = col;
+            var ret = cont();
+            indentation = save_indentation;
+            return ret;
+        } : function(col, cont) {
+            return cont();
+        };
+        var newline = options.beautify ? function() {
+            print("\n");
+        } : noop;
+        var semicolon = options.beautify ? function() {
+            print(";");
+        } : function() {
+            might_need_semicolon = true;
+        };
+        function force_semicolon() {
+            might_need_semicolon = false;
+            print(";");
+        }
+        function next_indent() {
+            return indentation + options.indent_level;
+        }
+        function with_block(cont) {
+            var ret;
+            print("{");
+            newline();
+            with_indent(next_indent(), function() {
+                ret = cont();
+            });
+            indent();
+            print("}");
+            return ret;
+        }
+        function with_parens(cont) {
+            print("(");
+            var ret = cont();
+            print(")");
+            return ret;
+        }
+        function with_square(cont) {
+            print("[");
+            var ret = cont();
+            print("]");
+            return ret;
+        }
+        function comma() {
+            print(",");
+            space();
+        }
+        function colon() {
+            print(":");
+            if (options.space_colon) space();
+        }
+        var add_mapping = options.source_map ? function(token, name) {
+            try {
+                if (token) options.source_map.add(token.file || "?", current_line, current_col, token.line, token.col, !name && token.type == "name" ? token.value : name);
+            } catch (ex) {
+                AST_Node.warn("Couldn't figure out mapping for {file}:{line},{col} → {cline},{ccol} [{name}]", {
+                    file: token.file,
+                    line: token.line,
+                    col: token.col,
+                    cline: current_line,
+                    ccol: current_col,
+                    name: name || ""
+                });
+            }
+        } : noop;
+        function get() {
+            return OUTPUT;
+        }
+        var stack = [];
+        return {
+            get: get,
+            toString: get,
+            indent: indent,
+            indentation: function() {
+                return indentation;
+            },
+            current_width: function() {
+                return current_col - indentation;
+            },
+            should_break: function() {
+                return options.width && this.current_width() >= options.width;
+            },
+            newline: newline,
+            print: print,
+            space: space,
+            comma: comma,
+            colon: colon,
+            last: function() {
+                return last;
+            },
+            semicolon: semicolon,
+            force_semicolon: force_semicolon,
+            to_ascii: to_ascii,
+            print_name: function(name) {
+                print(make_name(name));
+            },
+            print_string: function(str) {
+                print(encode_string(str));
+            },
+            next_indent: next_indent,
+            with_indent: with_indent,
+            with_block: with_block,
+            with_parens: with_parens,
+            with_square: with_square,
+            add_mapping: add_mapping,
+            option: function(opt) {
+                return options[opt];
+            },
+            line: function() {
+                return current_line;
+            },
+            col: function() {
+                return current_col;
+            },
+            pos: function() {
+                return current_pos;
+            },
+            push_node: function(node) {
+                stack.push(node);
+            },
+            pop_node: function() {
+                return stack.pop();
+            },
+            stack: function() {
+                return stack;
+            },
+            parent: function(n) {
+                return stack[stack.length - 2 - (n || 0)];
+            }
+        };
+    }
+    (function() {
+        function DEFPRINT(nodetype, generator) {
+            nodetype.DEFMETHOD("_codegen", generator);
+        }
+        AST_Node.DEFMETHOD("print", function(stream, force_parens) {
+            var self = this, generator = self._codegen;
+            function doit() {
+                self.add_comments(stream);
+                self.add_source_map(stream);
+                generator(self, stream);
+            }
+            stream.push_node(self);
+            if (force_parens || self.needs_parens(stream)) {
+                stream.with_parens(doit);
+            } else {
+                doit();
+            }
+            stream.pop_node();
+        });
+        AST_Node.DEFMETHOD("print_to_string", function(options) {
+            var s = OutputStream(options);
+            this.print(s);
+            return s.get();
+        });
+        AST_Node.DEFMETHOD("add_comments", function(output) {
+            var c = output.option("comments"), self = this;
+            if (c) {
+                var start = self.start;
+                if (start && !start._comments_dumped) {
+                    start._comments_dumped = true;
+                    var comments = start.comments_before;
+                    if (self instanceof AST_Exit && self.value && self.value.start.comments_before.length > 0) {
+                        comments = (comments || []).concat(self.value.start.comments_before);
+                        self.value.start.comments_before = [];
+                    }
+                    if (c.test) {
+                        comments = comments.filter(function(comment) {
+                            return c.test(comment.value);
+                        });
+                    } else if (typeof c == "function") {
+                        comments = comments.filter(function(comment) {
+                            return c(self, comment);
+                        });
+                    }
+                    comments.forEach(function(c) {
+                        if (c.type == "comment1") {
+                            output.print("//" + c.value + "\n");
+                            output.indent();
+                        } else if (c.type == "comment2") {
+                            output.print("/*" + c.value + "*/");
+                            if (start.nlb) {
+                                output.print("\n");
+                                output.indent();
+                            } else {
+                                output.space();
+                            }
+                        }
+                    });
+                }
+            }
+        });
+        function PARENS(nodetype, func) {
+            nodetype.DEFMETHOD("needs_parens", func);
+        }
+        PARENS(AST_Node, function() {
+            return false;
+        });
+        PARENS(AST_Function, function(output) {
+            return first_in_statement(output);
+        });
+        PARENS(AST_Object, function(output) {
+            return first_in_statement(output);
+        });
+        PARENS(AST_Unary, function(output) {
+            var p = output.parent();
+            return p instanceof AST_PropAccess && p.expression === this;
+        });
+        PARENS(AST_Seq, function(output) {
+            var p = output.parent();
+            return p instanceof AST_Call || p instanceof AST_Unary || p instanceof AST_Binary || p instanceof AST_VarDef || p instanceof AST_Dot || p instanceof AST_Array || p instanceof AST_ObjectProperty || p instanceof AST_Conditional;
+        });
+        PARENS(AST_Binary, function(output) {
+            var p = output.parent();
+            if (p instanceof AST_Call && p.expression === this) return true;
+            if (p instanceof AST_Unary) return true;
+            if (p instanceof AST_PropAccess && p.expression === this) return true;
+            if (p instanceof AST_Binary) {
+                var po = p.operator, pp = PRECEDENCE[po];
+                var so = this.operator, sp = PRECEDENCE[so];
+                if (pp > sp || pp == sp && this === p.right && !(so == po && (so == "*" || so == "&&" || so == "||"))) {
+                    return true;
+                }
+            }
+        });
+        PARENS(AST_PropAccess, function(output) {
+            var p = output.parent();
+            if (p instanceof AST_New && p.expression === this) {
+                try {
+                    this.walk(new TreeWalker(function(node) {
+                        if (node instanceof AST_Call) throw p;
+                    }));
+                } catch (ex) {
+                    if (ex !== p) throw ex;
+                    return true;
+                }
+            }
+        });
+        PARENS(AST_Call, function(output) {
+            var p = output.parent();
+            return p instanceof AST_New && p.expression === this;
+        });
+        PARENS(AST_New, function(output) {
+            var p = output.parent();
+            if (no_constructor_parens(this, output) && (p instanceof AST_PropAccess || p instanceof AST_Call && p.expression === this)) return true;
+        });
+        PARENS(AST_Number, function(output) {
+            var p = output.parent();
+            if (this.getValue() < 0 && p instanceof AST_PropAccess && p.expression === this) return true;
+        });
+        PARENS(AST_NaN, function(output) {
+            var p = output.parent();
+            if (p instanceof AST_PropAccess && p.expression === this) return true;
+        });
+        function assign_and_conditional_paren_rules(output) {
+            var p = output.parent();
+            if (p instanceof AST_Unary) return true;
+            if (p instanceof AST_Binary && !(p instanceof AST_Assign)) return true;
+            if (p instanceof AST_Call && p.expression === this) return true;
+            if (p instanceof AST_Conditional && p.condition === this) return true;
+            if (p instanceof AST_PropAccess && p.expression === this) return true;
+        }
+        PARENS(AST_Assign, assign_and_conditional_paren_rules);
+        PARENS(AST_Conditional, assign_and_conditional_paren_rules);
+        DEFPRINT(AST_Directive, function(self, output) {
+            output.print_string(self.value);
+            output.semicolon();
+        });
+        DEFPRINT(AST_Debugger, function(self, output) {
+            output.print("debugger");
+            output.semicolon();
+        });
+        function display_body(body, is_toplevel, output) {
+            var last = body.length - 1;
+            body.forEach(function(stmt, i) {
+                if (!(stmt instanceof AST_EmptyStatement)) {
+                    output.indent();
+                    stmt.print(output);
+                    if (!(i == last && is_toplevel)) {
+                        output.newline();
+                        if (is_toplevel) output.newline();
+                    }
+                }
+            });
+        }
+        AST_StatementWithBody.DEFMETHOD("_do_print_body", function(output) {
+            force_statement(this.body, output);
+        });
+        DEFPRINT(AST_Statement, function(self, output) {
+            self.body.print(output);
+            output.semicolon();
+        });
+        DEFPRINT(AST_Toplevel, function(self, output) {
+            display_body(self.body, true, output);
+            output.print("");
+        });
+        DEFPRINT(AST_LabeledStatement, function(self, output) {
+            self.label.print(output);
+            output.colon();
+            self.body.print(output);
+        });
+        DEFPRINT(AST_SimpleStatement, function(self, output) {
+            self.body.print(output);
+            output.semicolon();
+        });
+        function print_bracketed(body, output) {
+            if (body.length > 0) output.with_block(function() {
+                display_body(body, false, output);
+            }); else output.print("{}");
+        }
+        DEFPRINT(AST_BlockStatement, function(self, output) {
+            print_bracketed(self.body, output);
+        });
+        DEFPRINT(AST_EmptyStatement, function(self, output) {
+            output.semicolon();
+        });
+        DEFPRINT(AST_Do, function(self, output) {
+            output.print("do");
+            output.space();
+            self._do_print_body(output);
+            output.space();
+            output.print("while");
+            output.space();
+            output.with_parens(function() {
+                self.condition.print(output);
+            });
+            output.semicolon();
+        });
+        DEFPRINT(AST_While, function(self, output) {
+            output.print("while");
+            output.space();
+            output.with_parens(function() {
+                self.condition.print(output);
+            });
+            output.space();
+            self._do_print_body(output);
+        });
+        DEFPRINT(AST_For, function(self, output) {
+            output.print("for");
+            output.space();
+            output.with_parens(function() {
+                if (self.init) {
+                    if (self.init instanceof AST_Definitions) {
+                        self.init.print(output);
+                    } else {
+                        parenthesize_for_noin(self.init, output, true);
+                    }
+                    output.print(";");
+                    output.space();
+                } else {
+                    output.print(";");
+                }
+                if (self.condition) {
+                    self.condition.print(output);
+                    output.print(";");
+                    output.space();
+                } else {
+                    output.print(";");
+                }
+                if (self.step) {
+                    self.step.print(output);
+                }
+            });
+            output.space();
+            self._do_print_body(output);
+        });
+        DEFPRINT(AST_ForIn, function(self, output) {
+            output.print("for");
+            output.space();
+            output.with_parens(function() {
+                self.init.print(output);
+                output.space();
+                output.print("in");
+                output.space();
+                self.object.print(output);
+            });
+            output.space();
+            self._do_print_body(output);
+        });
+        DEFPRINT(AST_With, function(self, output) {
+            output.print("with");
+            output.space();
+            output.with_parens(function() {
+                self.expression.print(output);
+            });
+            output.space();
+            self._do_print_body(output);
+        });
+        AST_Lambda.DEFMETHOD("_do_print", function(output, nokeyword) {
+            var self = this;
+            if (!nokeyword) {
+                output.print("function");
+            }
+            if (self.name) {
+                output.space();
+                self.name.print(output);
+            }
+            output.with_parens(function() {
+                self.argnames.forEach(function(arg, i) {
+                    if (i) output.comma();
+                    arg.print(output);
+                });
+            });
+            output.space();
+            print_bracketed(self.body, output);
+        });
+        DEFPRINT(AST_Lambda, function(self, output) {
+            self._do_print(output);
+        });
+        AST_Exit.DEFMETHOD("_do_print", function(output, kind) {
+            output.print(kind);
+            if (this.value) {
+                output.space();
+                this.value.print(output);
+            }
+            output.semicolon();
+        });
+        DEFPRINT(AST_Return, function(self, output) {
+            self._do_print(output, "return");
+        });
+        DEFPRINT(AST_Throw, function(self, output) {
+            self._do_print(output, "throw");
+        });
+        AST_LoopControl.DEFMETHOD("_do_print", function(output, kind) {
+            output.print(kind);
+            if (this.label) {
+                output.space();
+                this.label.print(output);
+            }
+            output.semicolon();
+        });
+        DEFPRINT(AST_Break, function(self, output) {
+            self._do_print(output, "break");
+        });
+        DEFPRINT(AST_Continue, function(self, output) {
+            self._do_print(output, "continue");
+        });
+        function make_then(self, output) {
+            if (output.option("bracketize")) {
+                make_block(self.body, output);
+                return;
+            }
+            if (!self.body) return output.force_semicolon();
+            if (self.body instanceof AST_Do && !output.option("screw_ie8")) {
+                make_block(self.body, output);
+                return;
+            }
+            var b = self.body;
+            while (true) {
+                if (b instanceof AST_If) {
+                    if (!b.alternative) {
+                        make_block(self.body, output);
+                        return;
+                    }
+                    b = b.alternative;
+                } else if (b instanceof AST_StatementWithBody) {
+                    b = b.body;
+                } else break;
+            }
+            force_statement(self.body, output);
+        }
+        DEFPRINT(AST_If, function(self, output) {
+            output.print("if");
+            output.space();
+            output.with_parens(function() {
+                self.condition.print(output);
+            });
+            output.space();
+            if (self.alternative) {
+                make_then(self, output);
+                output.space();
+                output.print("else");
+                output.space();
+                force_statement(self.alternative, output);
+            } else {
+                self._do_print_body(output);
+            }
+        });
+        DEFPRINT(AST_Switch, function(self, output) {
+            output.print("switch");
+            output.space();
+            output.with_parens(function() {
+                self.expression.print(output);
+            });
+            output.space();
+            if (self.body.length > 0) output.with_block(function() {
+                self.body.forEach(function(stmt, i) {
+                    if (i) output.newline();
+                    output.indent(true);
+                    stmt.print(output);
+                });
+            }); else output.print("{}");
+        });
+        AST_SwitchBranch.DEFMETHOD("_do_print_body", function(output) {
+            if (this.body.length > 0) {
+                output.newline();
+                this.body.forEach(function(stmt) {
+                    output.indent();
+                    stmt.print(output);
+                    output.newline();
+                });
+            }
+        });
+        DEFPRINT(AST_Default, function(self, output) {
+            output.print("default:");
+            self._do_print_body(output);
+        });
+        DEFPRINT(AST_Case, function(self, output) {
+            output.print("case");
+            output.space();
+            self.expression.print(output);
+            output.print(":");
+            self._do_print_body(output);
+        });
+        DEFPRINT(AST_Try, function(self, output) {
+            output.print("try");
+            output.space();
+            print_bracketed(self.body, output);
+            if (self.bcatch) {
+                output.space();
+                self.bcatch.print(output);
+            }
+            if (self.bfinally) {
+                output.space();
+                self.bfinally.print(output);
+            }
+        });
+        DEFPRINT(AST_Catch, function(self, output) {
+            output.print("catch");
+            output.space();
+            output.with_parens(function() {
+                self.argname.print(output);
+            });
+            output.space();
+            print_bracketed(self.body, output);
+        });
+        DEFPRINT(AST_Finally, function(self, output) {
+            output.print("finally");
+            output.space();
+            print_bracketed(self.body, output);
+        });
+        AST_Definitions.DEFMETHOD("_do_print", function(output, kind) {
+            output.print(kind);
+            output.space();
+            this.definitions.forEach(function(def, i) {
+                if (i) output.comma();
+                def.print(output);
+            });
+            var p = output.parent();
+            var in_for = p instanceof AST_For || p instanceof AST_ForIn;
+            var avoid_semicolon = in_for && p.init === this;
+            if (!avoid_semicolon) output.semicolon();
+        });
+        DEFPRINT(AST_Var, function(self, output) {
+            self._do_print(output, "var");
+        });
+        DEFPRINT(AST_Const, function(self, output) {
+            self._do_print(output, "const");
+        });
+        function parenthesize_for_noin(node, output, noin) {
+            if (!noin) node.print(output); else try {
+                node.walk(new TreeWalker(function(node) {
+                    if (node instanceof AST_Binary && node.operator == "in") throw output;
+                }));
+                node.print(output);
+            } catch (ex) {
+                if (ex !== output) throw ex;
+                node.print(output, true);
+            }
+        }
+        DEFPRINT(AST_VarDef, function(self, output) {
+            self.name.print(output);
+            if (self.value) {
+                output.space();
+                output.print("=");
+                output.space();
+                var p = output.parent(1);
+                var noin = p instanceof AST_For || p instanceof AST_ForIn;
+                parenthesize_for_noin(self.value, output, noin);
+            }
+        });
+        DEFPRINT(AST_Call, function(self, output) {
+            self.expression.print(output);
+            if (self instanceof AST_New && no_constructor_parens(self, output)) return;
+            output.with_parens(function() {
+                self.args.forEach(function(expr, i) {
+                    if (i) output.comma();
+                    expr.print(output);
+                });
+            });
+        });
+        DEFPRINT(AST_New, function(self, output) {
+            output.print("new");
+            output.space();
+            AST_Call.prototype._codegen(self, output);
+        });
+        AST_Seq.DEFMETHOD("_do_print", function(output) {
+            this.car.print(output);
+            if (this.cdr) {
+                output.comma();
+                if (output.should_break()) {
+                    output.newline();
+                    output.indent();
+                }
+                this.cdr.print(output);
+            }
+        });
+        DEFPRINT(AST_Seq, function(self, output) {
+            self._do_print(output);
+        });
+        DEFPRINT(AST_Dot, function(self, output) {
+            var expr = self.expression;
+            expr.print(output);
+            if (expr instanceof AST_Number && expr.getValue() >= 0) {
+                if (!/[xa-f.]/i.test(output.last())) {
+                    output.print(".");
+                }
+            }
+            output.print(".");
+            output.add_mapping(self.end);
+            output.print_name(self.property);
+        });
+        DEFPRINT(AST_Sub, function(self, output) {
+            self.expression.print(output);
+            output.print("[");
+            self.property.print(output);
+            output.print("]");
+        });
+        DEFPRINT(AST_UnaryPrefix, function(self, output) {
+            var op = self.operator;
+            output.print(op);
+            if (/^[a-z]/i.test(op)) output.space();
+            self.expression.print(output);
+        });
+        DEFPRINT(AST_UnaryPostfix, function(self, output) {
+            self.expression.print(output);
+            output.print(self.operator);
+        });
+        DEFPRINT(AST_Binary, function(self, output) {
+            self.left.print(output);
+            output.space();
+            output.print(self.operator);
+            output.space();
+            self.right.print(output);
+        });
+        DEFPRINT(AST_Conditional, function(self, output) {
+            self.condition.print(output);
+            output.space();
+            output.print("?");
+            output.space();
+            self.consequent.print(output);
+            output.space();
+            output.colon();
+            self.alternative.print(output);
+        });
+        DEFPRINT(AST_Array, function(self, output) {
+            output.with_square(function() {
+                var a = self.elements, len = a.length;
+                if (len > 0) output.space();
+                a.forEach(function(exp, i) {
+                    if (i) output.comma();
+                    exp.print(output);
+                    if (i === len - 1 && exp instanceof AST_Hole) output.comma();
+                });
+                if (len > 0) output.space();
+            });
+        });
+        DEFPRINT(AST_Object, function(self, output) {
+            if (self.properties.length > 0) output.with_block(function() {
+                self.properties.forEach(function(prop, i) {
+                    if (i) {
+                        output.print(",");
+                        output.newline();
+                    }
+                    output.indent();
+                    prop.print(output);
+                });
+                output.newline();
+            }); else output.print("{}");
+        });
+        DEFPRINT(AST_ObjectKeyVal, function(self, output) {
+            var key = self.key;
+            if (output.option("quote_keys")) {
+                output.print_string(key + "");
+            } else if ((typeof key == "number" || !output.option("beautify") && +key + "" == key) && parseFloat(key) >= 0) {
+                output.print(make_num(key));
+            } else if (RESERVED_WORDS(key) ? output.option("screw_ie8") : is_identifier_string(key)) {
+                output.print_name(key);
+            } else {
+                output.print_string(key);
+            }
+            output.colon();
+            self.value.print(output);
+        });
+        DEFPRINT(AST_ObjectSetter, function(self, output) {
+            output.print("set");
+            self.value._do_print(output, true);
+        });
+        DEFPRINT(AST_ObjectGetter, function(self, output) {
+            output.print("get");
+            self.value._do_print(output, true);
+        });
+        DEFPRINT(AST_Symbol, function(self, output) {
+            var def = self.definition();
+            output.print_name(def ? def.mangled_name || def.name : self.name);
+        });
+        DEFPRINT(AST_Undefined, function(self, output) {
+            output.print("void 0");
+        });
+        DEFPRINT(AST_Hole, noop);
+        DEFPRINT(AST_Infinity, function(self, output) {
+            output.print("1/0");
+        });
+        DEFPRINT(AST_NaN, function(self, output) {
+            output.print("0/0");
+        });
+        DEFPRINT(AST_This, function(self, output) {
+            output.print("this");
+        });
+        DEFPRINT(AST_Constant, function(self, output) {
+            output.print(self.getValue());
+        });
+        DEFPRINT(AST_String, function(self, output) {
+            output.print_string(self.getValue());
+        });
+        DEFPRINT(AST_Number, function(self, output) {
+            output.print(make_num(self.getValue()));
+        });
+        DEFPRINT(AST_RegExp, function(self, output) {
+            var str = self.getValue().toString();
+            if (output.option("ascii_only")) str = output.to_ascii(str);
+            output.print(str);
+            var p = output.parent();
+            if (p instanceof AST_Binary && /^in/.test(p.operator) && p.left === self) output.print(" ");
+        });
+        function force_statement(stat, output) {
+            if (output.option("bracketize")) {
+                if (!stat || stat instanceof AST_EmptyStatement) output.print("{}"); else if (stat instanceof AST_BlockStatement) stat.print(output); else output.with_block(function() {
+                    output.indent();
+                    stat.print(output);
+                    output.newline();
+                });
+            } else {
+                if (!stat || stat instanceof AST_EmptyStatement) output.force_semicolon(); else stat.print(output);
+            }
+        }
+        function first_in_statement(output) {
+            var a = output.stack(), i = a.length, node = a[--i], p = a[--i];
+            while (i > 0) {
+                if (p instanceof AST_Statement && p.body === node) return true;
+                if (p instanceof AST_Seq && p.car === node || p instanceof AST_Call && p.expression === node && !(p instanceof AST_New) || p instanceof AST_Dot && p.expression === node || p instanceof AST_Sub && p.expression === node || p instanceof AST_Conditional && p.condition === node || p instanceof AST_Binary && p.left === node || p instanceof AST_UnaryPostfix && p.expression === node) {
+                    node = p;
+                    p = a[--i];
+                } else {
+                    return false;
+                }
+            }
+        }
+        function no_constructor_parens(self, output) {
+            return self.args.length == 0 && !output.option("beautify");
+        }
+        function best_of(a) {
+            var best = a[0], len = best.length;
+            for (var i = 1; i < a.length; ++i) {
+                if (a[i].length < len) {
+                    best = a[i];
+                    len = best.length;
+                }
+            }
+            return best;
+        }
+        function make_num(num) {
+            var str = num.toString(10), a = [ str.replace(/^0\./, ".").replace("e+", "e") ], m;
+            if (Math.floor(num) === num) {
+                if (num >= 0) {
+                    a.push("0x" + num.toString(16).toLowerCase(), "0" + num.toString(8));
+                } else {
+                    a.push("-0x" + (-num).toString(16).toLowerCase(), "-0" + (-num).toString(8));
+                }
+                if (m = /^(.*?)(0+)$/.exec(num)) {
+                    a.push(m[1] + "e" + m[2].length);
+                }
+            } else if (m = /^0?\.(0+)(.*)$/.exec(num)) {
+                a.push(m[2] + "e-" + (m[1].length + m[2].length), str.substr(str.indexOf(".")));
+            }
+            return best_of(a);
+        }
+        function make_block(stmt, output) {
+            if (stmt instanceof AST_BlockStatement) {
+                stmt.print(output);
+                return;
+            }
+            output.with_block(function() {
+                output.indent();
+                stmt.print(output);
+                output.newline();
+            });
+        }
+        function DEFMAP(nodetype, generator) {
+            nodetype.DEFMETHOD("add_source_map", function(stream) {
+                generator(this, stream);
+            });
+        }
+        DEFMAP(AST_Node, noop);
+        function basic_sourcemap_gen(self, output) {
+            output.add_mapping(self.start);
+        }
+        DEFMAP(AST_Directive, basic_sourcemap_gen);
+        DEFMAP(AST_Debugger, basic_sourcemap_gen);
+        DEFMAP(AST_Symbol, basic_sourcemap_gen);
+        DEFMAP(AST_Jump, basic_sourcemap_gen);
+        DEFMAP(AST_StatementWithBody, basic_sourcemap_gen);
+        DEFMAP(AST_LabeledStatement, noop);
+        DEFMAP(AST_Lambda, basic_sourcemap_gen);
+        DEFMAP(AST_Switch, basic_sourcemap_gen);
+        DEFMAP(AST_SwitchBranch, basic_sourcemap_gen);
+        DEFMAP(AST_BlockStatement, basic_sourcemap_gen);
+        DEFMAP(AST_Toplevel, noop);
+        DEFMAP(AST_New, basic_sourcemap_gen);
+        DEFMAP(AST_Try, basic_sourcemap_gen);
+        DEFMAP(AST_Catch, basic_sourcemap_gen);
+        DEFMAP(AST_Finally, basic_sourcemap_gen);
+        DEFMAP(AST_Definitions, basic_sourcemap_gen);
+        DEFMAP(AST_Constant, basic_sourcemap_gen);
+        DEFMAP(AST_ObjectProperty, function(self, output) {
+            output.add_mapping(self.start, self.key);
+        });
+    })();
+    "use strict";
+    function Compressor(options, false_by_default) {
+        if (!(this instanceof Compressor)) return new Compressor(options, false_by_default);
+        TreeTransformer.call(this, this.before, this.after);
+        this.options = defaults(options, {
+            sequences: !false_by_default,
+            properties: !false_by_default,
+            dead_code: !false_by_default,
+            drop_debugger: !false_by_default,
+            unsafe: false,
+            unsafe_comps: false,
+            conditionals: !false_by_default,
+            comparisons: !false_by_default,
+            evaluate: !false_by_default,
+            booleans: !false_by_default,
+            loops: !false_by_default,
+            unused: !false_by_default,
+            hoist_funs: !false_by_default,
+            hoist_vars: false,
+            if_return: !false_by_default,
+            join_vars: !false_by_default,
+            cascade: !false_by_default,
+            side_effects: !false_by_default,
+            negate_iife: !false_by_default,
+            screw_ie8: false,
+            warnings: true,
+            global_defs: {}
+        }, true);
+    }
+    Compressor.prototype = new TreeTransformer();
+    merge(Compressor.prototype, {
+        option: function(key) {
+            return this.options[key];
+        },
+        warn: function() {
+            if (this.options.warnings) AST_Node.warn.apply(AST_Node, arguments);
+        },
+        before: function(node, descend, in_list) {
+            if (node._squeezed) return node;
+            if (node instanceof AST_Scope) {
+                node.drop_unused(this);
+                node = node.hoist_declarations(this);
+            }
+            descend(node, this);
+            node = node.optimize(this);
+            if (node instanceof AST_Scope) {
+                var save_warnings = this.options.warnings;
+                this.options.warnings = false;
+                node.drop_unused(this);
+                this.options.warnings = save_warnings;
+            }
+            node._squeezed = true;
+            return node;
+        }
+    });
+    (function() {
+        function OPT(node, optimizer) {
+            node.DEFMETHOD("optimize", function(compressor) {
+                var self = this;
+                if (self._optimized) return self;
+                var opt = optimizer(self, compressor);
+                opt._optimized = true;
+                if (opt === self) return opt;
+                return opt.transform(compressor);
+            });
+        }
+        OPT(AST_Node, function(self, compressor) {
+            return self;
+        });
+        AST_Node.DEFMETHOD("equivalent_to", function(node) {
+            return this.print_to_string() == node.print_to_string();
+        });
+        function make_node(ctor, orig, props) {
+            if (!props) props = {};
+            if (orig) {
+                if (!props.start) props.start = orig.start;
+                if (!props.end) props.end = orig.end;
+            }
+            return new ctor(props);
+        }
+        function make_node_from_constant(compressor, val, orig) {
+            if (val instanceof AST_Node) return val.transform(compressor);
+            switch (typeof val) {
+              case "string":
+                return make_node(AST_String, orig, {
+                    value: val
+                }).optimize(compressor);
+
+              case "number":
+                return make_node(isNaN(val) ? AST_NaN : AST_Number, orig, {
+                    value: val
+                }).optimize(compressor);
+
+              case "boolean":
+                return make_node(val ? AST_True : AST_False, orig).optimize(compressor);
+
+              case "undefined":
+                return make_node(AST_Undefined, orig).optimize(compressor);
+
+              default:
+                if (val === null) {
+                    return make_node(AST_Null, orig).optimize(compressor);
+                }
+                if (val instanceof RegExp) {
+                    return make_node(AST_RegExp, orig).optimize(compressor);
+                }
+                throw new Error(string_template("Can't handle constant of type: {type}", {
+                    type: typeof val
+                }));
+            }
+        }
+        function as_statement_array(thing) {
+            if (thing === null) return [];
+            if (thing instanceof AST_BlockStatement) return thing.body;
+            if (thing instanceof AST_EmptyStatement) return [];
+            if (thing instanceof AST_Statement) return [ thing ];
+            throw new Error("Can't convert thing to statement array");
+        }
+        function is_empty(thing) {
+            if (thing === null) return true;
+            if (thing instanceof AST_EmptyStatement) return true;
+            if (thing instanceof AST_BlockStatement) return thing.body.length == 0;
+            return false;
+        }
+        function loop_body(x) {
+            if (x instanceof AST_Switch) return x;
+            if (x instanceof AST_For || x instanceof AST_ForIn || x instanceof AST_DWLoop) {
+                return x.body instanceof AST_BlockStatement ? x.body : x;
+            }
+            return x;
+        }
+        function tighten_body(statements, compressor) {
+            var CHANGED;
+            do {
+                CHANGED = false;
+                statements = eliminate_spurious_blocks(statements);
+                if (compressor.option("dead_code")) {
+                    statements = eliminate_dead_code(statements, compressor);
+                }
+                if (compressor.option("if_return")) {
+                    statements = handle_if_return(statements, compressor);
+                }
+                if (compressor.option("sequences")) {
+                    statements = sequencesize(statements, compressor);
+                }
+                if (compressor.option("join_vars")) {
+                    statements = join_consecutive_vars(statements, compressor);
+                }
+            } while (CHANGED);
+            if (compressor.option("negate_iife")) {
+                negate_iifes(statements, compressor);
+            }
+            return statements;
+            function eliminate_spurious_blocks(statements) {
+                var seen_dirs = [];
+                return statements.reduce(function(a, stat) {
+                    if (stat instanceof AST_BlockStatement) {
+                        CHANGED = true;
+                        a.push.apply(a, eliminate_spurious_blocks(stat.body));
+                    } else if (stat instanceof AST_EmptyStatement) {
+                        CHANGED = true;
+                    } else if (stat instanceof AST_Directive) {
+                        if (seen_dirs.indexOf(stat.value) < 0) {
+                            a.push(stat);
+                            seen_dirs.push(stat.value);
+                        } else {
+                            CHANGED = true;
+                        }
+                    } else {
+                        a.push(stat);
+                    }
+                    return a;
+                }, []);
+            }
+            function handle_if_return(statements, compressor) {
+                var self = compressor.self();
+                var in_lambda = self instanceof AST_Lambda;
+                var ret = [];
+                loop: for (var i = statements.length; --i >= 0; ) {
+                    var stat = statements[i];
+                    switch (true) {
+                      case in_lambda && stat instanceof AST_Return && !stat.value && ret.length == 0:
+                        CHANGED = true;
+                        continue loop;
+
+                      case stat instanceof AST_If:
+                        if (stat.body instanceof AST_Return) {
+                            if ((in_lambda && ret.length == 0 || ret[0] instanceof AST_Return && !ret[0].value) && !stat.body.value && !stat.alternative) {
+                                CHANGED = true;
+                                var cond = make_node(AST_SimpleStatement, stat.condition, {
+                                    body: stat.condition
+                                });
+                                ret.unshift(cond);
+                                continue loop;
+                            }
+                            if (ret[0] instanceof AST_Return && stat.body.value && ret[0].value && !stat.alternative) {
+                                CHANGED = true;
+                                stat = stat.clone();
+                                stat.alternative = ret[0];
+                                ret[0] = stat.transform(compressor);
+                                continue loop;
+                            }
+                            if ((ret.length == 0 || ret[0] instanceof AST_Return) && stat.body.value && !stat.alternative && in_lambda) {
+                                CHANGED = true;
+                                stat = stat.clone();
+                                stat.alternative = ret[0] || make_node(AST_Return, stat, {
+                                    value: make_node(AST_Undefined, stat)
+                                });
+                                ret[0] = stat.transform(compressor);
+                                continue loop;
+                            }
+                            if (!stat.body.value && in_lambda) {
+                                CHANGED = true;
+                                stat = stat.clone();
+                                stat.condition = stat.condition.negate(compressor);
+                                stat.body = make_node(AST_BlockStatement, stat, {
+                                    body: as_statement_array(stat.alternative).concat(ret)
+                                });
+                                stat.alternative = null;
+                                ret = [ stat.transform(compressor) ];
+                                continue loop;
+                            }
+                            if (ret.length == 1 && in_lambda && ret[0] instanceof AST_SimpleStatement && (!stat.alternative || stat.alternative instanceof AST_SimpleStatement)) {
+                                CHANGED = true;
+                                ret.push(make_node(AST_Return, ret[0], {
+                                    value: make_node(AST_Undefined, ret[0])
+                                }).transform(compressor));
+                                ret = as_statement_array(stat.alternative).concat(ret);
+                                ret.unshift(stat);
+                                continue loop;
+                            }
+                        }
+                        var ab = aborts(stat.body);
+                        var lct = ab instanceof AST_LoopControl ? compressor.loopcontrol_target(ab.label) : null;
+                        if (ab && (ab instanceof AST_Return && !ab.value && in_lambda || ab instanceof AST_Continue && self === loop_body(lct) || ab instanceof AST_Break && lct instanceof AST_BlockStatement && self === lct)) {
+                            if (ab.label) {
+                                remove(ab.label.thedef.references, ab.label);
+                            }
+                            CHANGED = true;
+                            var body = as_statement_array(stat.body).slice(0, -1);
+                            stat = stat.clone();
+                            stat.condition = stat.condition.negate(compressor);
+                            stat.body = make_node(AST_BlockStatement, stat, {
+                                body: ret
+                            });
+                            stat.alternative = make_node(AST_BlockStatement, stat, {
+                                body: body
+                            });
+                            ret = [ stat.transform(compressor) ];
+                            continue loop;
+                        }
+                        var ab = aborts(stat.alternative);
+                        var lct = ab instanceof AST_LoopControl ? compressor.loopcontrol_target(ab.label) : null;
+                        if (ab && (ab instanceof AST_Return && !ab.value && in_lambda || ab instanceof AST_Continue && self === loop_body(lct) || ab instanceof AST_Break && lct instanceof AST_BlockStatement && self === lct)) {
+                            if (ab.label) {
+                                remove(ab.label.thedef.references, ab.label);
+                            }
+                            CHANGED = true;
+                            stat = stat.clone();
+                            stat.body = make_node(AST_BlockStatement, stat.body, {
+                                body: as_statement_array(stat.body).concat(ret)
+                            });
+                            stat.alternative = make_node(AST_BlockStatement, stat.alternative, {
+                                body: as_statement_array(stat.alternative).slice(0, -1)
+                            });
+                            ret = [ stat.transform(compressor) ];
+                            continue loop;
+                        }
+                        ret.unshift(stat);
+                        break;
+
+                      default:
+                        ret.unshift(stat);
+                        break;
+                    }
+                }
+                return ret;
+            }
+            function eliminate_dead_code(statements, compressor) {
+                var has_quit = false;
+                var orig = statements.length;
+                var self = compressor.self();
+                statements = statements.reduce(function(a, stat) {
+                    if (has_quit) {
+                        extract_declarations_from_unreachable_code(compressor, stat, a);
+                    } else {
+                        if (stat instanceof AST_LoopControl) {
+                            var lct = compressor.loopcontrol_target(stat.label);
+                            if (stat instanceof AST_Break && lct instanceof AST_BlockStatement && loop_body(lct) === self || stat instanceof AST_Continue && loop_body(lct) === self) {
+                                if (stat.label) {
+                                    remove(stat.label.thedef.references, stat.label);
+                                }
+                            } else {
+                                a.push(stat);
+                            }
+                        } else {
+                            a.push(stat);
+                        }
+                        if (aborts(stat)) has_quit = true;
+                    }
+                    return a;
+                }, []);
+                CHANGED = statements.length != orig;
+                return statements;
+            }
+            function sequencesize(statements, compressor) {
+                if (statements.length < 2) return statements;
+                var seq = [], ret = [];
+                function push_seq() {
+                    seq = AST_Seq.from_array(seq);
+                    if (seq) ret.push(make_node(AST_SimpleStatement, seq, {
+                        body: seq
+                    }));
+                    seq = [];
+                }
+                statements.forEach(function(stat) {
+                    if (stat instanceof AST_SimpleStatement) seq.push(stat.body); else push_seq(), ret.push(stat);
+                });
+                push_seq();
+                ret = sequencesize_2(ret, compressor);
+                CHANGED = ret.length != statements.length;
+                return ret;
+            }
+            function sequencesize_2(statements, compressor) {
+                function cons_seq(right) {
+                    ret.pop();
+                    var left = prev.body;
+                    if (left instanceof AST_Seq) {
+                        left.add(right);
+                    } else {
+                        left = AST_Seq.cons(left, right);
+                    }
+                    return left.transform(compressor);
+                }
+                var ret = [], prev = null;
+                statements.forEach(function(stat) {
+                    if (prev) {
+                        if (stat instanceof AST_For) {
+                            var opera = {};
+                            try {
+                                prev.body.walk(new TreeWalker(function(node) {
+                                    if (node instanceof AST_Binary && node.operator == "in") throw opera;
+                                }));
+                                if (stat.init && !(stat.init instanceof AST_Definitions)) {
+                                    stat.init = cons_seq(stat.init);
+                                } else if (!stat.init) {
+                                    stat.init = prev.body;
+                                    ret.pop();
+                                }
+                            } catch (ex) {
+                                if (ex !== opera) throw ex;
+                            }
+                        } else if (stat instanceof AST_If) {
+                            stat.condition = cons_seq(stat.condition);
+                        } else if (stat instanceof AST_With) {
+                            stat.expression = cons_seq(stat.expression);
+                        } else if (stat instanceof AST_Exit && stat.value) {
+                            stat.value = cons_seq(stat.value);
+                        } else if (stat instanceof AST_Exit) {
+                            stat.value = cons_seq(make_node(AST_Undefined, stat));
+                        } else if (stat instanceof AST_Switch) {
+                            stat.expression = cons_seq(stat.expression);
+                        }
+                    }
+                    ret.push(stat);
+                    prev = stat instanceof AST_SimpleStatement ? stat : null;
+                });
+                return ret;
+            }
+            function join_consecutive_vars(statements, compressor) {
+                var prev = null;
+                return statements.reduce(function(a, stat) {
+                    if (stat instanceof AST_Definitions && prev && prev.TYPE == stat.TYPE) {
+                        prev.definitions = prev.definitions.concat(stat.definitions);
+                        CHANGED = true;
+                    } else if (stat instanceof AST_For && prev instanceof AST_Definitions && (!stat.init || stat.init.TYPE == prev.TYPE)) {
+                        CHANGED = true;
+                        a.pop();
+                        if (stat.init) {
+                            stat.init.definitions = prev.definitions.concat(stat.init.definitions);
+                        } else {
+                            stat.init = prev;
+                        }
+                        a.push(stat);
+                        prev = stat;
+                    } else {
+                        prev = stat;
+                        a.push(stat);
+                    }
+                    return a;
+                }, []);
+            }
+            function negate_iifes(statements, compressor) {
+                statements.forEach(function(stat) {
+                    if (stat instanceof AST_SimpleStatement) {
+                        stat.body = function transform(thing) {
+                            return thing.transform(new TreeTransformer(function(node) {
+                                if (node instanceof AST_Call && node.expression instanceof AST_Function) {
+                                    return make_node(AST_UnaryPrefix, node, {
+                                        operator: "!",
+                                        expression: node
+                                    });
+                                } else if (node instanceof AST_Call) {
+                                    node.expression = transform(node.expression);
+                                } else if (node instanceof AST_Seq) {
+                                    node.car = transform(node.car);
+                                } else if (node instanceof AST_Conditional) {
+                                    var expr = transform(node.condition);
+                                    if (expr !== node.condition) {
+                                        node.condition = expr;
+                                        var tmp = node.consequent;
+                                        node.consequent = node.alternative;
+                                        node.alternative = tmp;
+                                    }
+                                }
+                                return node;
+                            }));
+                        }(stat.body);
+                    }
+                });
+            }
+        }
+        function extract_declarations_from_unreachable_code(compressor, stat, target) {
+            compressor.warn("Dropping unreachable code [{file}:{line},{col}]", stat.start);
+            stat.walk(new TreeWalker(function(node) {
+                if (node instanceof AST_Definitions) {
+                    compressor.warn("Declarations in unreachable code! [{file}:{line},{col}]", node.start);
+                    node.remove_initializers();
+                    target.push(node);
+                    return true;
+                }
+                if (node instanceof AST_Defun) {
+                    target.push(node);
+                    return true;
+                }
+                if (node instanceof AST_Scope) {
+                    return true;
+                }
+            }));
+        }
+        (function(def) {
+            var unary_bool = [ "!", "delete" ];
+            var binary_bool = [ "in", "instanceof", "==", "!=", "===", "!==", "<", "<=", ">=", ">" ];
+            def(AST_Node, function() {
+                return false;
+            });
+            def(AST_UnaryPrefix, function() {
+                return member(this.operator, unary_bool);
+            });
+            def(AST_Binary, function() {
+                return member(this.operator, binary_bool) || (this.operator == "&&" || this.operator == "||") && this.left.is_boolean() && this.right.is_boolean();
+            });
+            def(AST_Conditional, function() {
+                return this.consequent.is_boolean() && this.alternative.is_boolean();
+            });
+            def(AST_Assign, function() {
+                return this.operator == "=" && this.right.is_boolean();
+            });
+            def(AST_Seq, function() {
+                return this.cdr.is_boolean();
+            });
+            def(AST_True, function() {
+                return true;
+            });
+            def(AST_False, function() {
+                return true;
+            });
+        })(function(node, func) {
+            node.DEFMETHOD("is_boolean", func);
+        });
+        (function(def) {
+            def(AST_Node, function() {
+                return false;
+            });
+            def(AST_String, function() {
+                return true;
+            });
+            def(AST_UnaryPrefix, function() {
+                return this.operator == "typeof";
+            });
+            def(AST_Binary, function(compressor) {
+                return this.operator == "+" && (this.left.is_string(compressor) || this.right.is_string(compressor));
+            });
+            def(AST_Assign, function(compressor) {
+                return (this.operator == "=" || this.operator == "+=") && this.right.is_string(compressor);
+            });
+            def(AST_Seq, function(compressor) {
+                return this.cdr.is_string(compressor);
+            });
+            def(AST_Conditional, function(compressor) {
+                return this.consequent.is_string(compressor) && this.alternative.is_string(compressor);
+            });
+            def(AST_Call, function(compressor) {
+                return compressor.option("unsafe") && this.expression instanceof AST_SymbolRef && this.expression.name == "String" && this.expression.undeclared();
+            });
+        })(function(node, func) {
+            node.DEFMETHOD("is_string", func);
+        });
+        function best_of(ast1, ast2) {
+            return ast1.print_to_string().length > ast2.print_to_string().length ? ast2 : ast1;
+        }
+        (function(def) {
+            AST_Node.DEFMETHOD("evaluate", function(compressor) {
+                if (!compressor.option("evaluate")) return [ this ];
+                try {
+                    var val = this._eval(), ast = make_node_from_constant(compressor, val, this);
+                    return [ best_of(ast, this), val ];
+                } catch (ex) {
+                    if (ex !== def) throw ex;
+                    return [ this ];
+                }
+            });
+            def(AST_Statement, function() {
+                throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]", this.start));
+            });
+            def(AST_Function, function() {
+                throw def;
+            });
+            function ev(node) {
+                return node._eval();
+            }
+            def(AST_Node, function() {
+                throw def;
+            });
+            def(AST_Constant, function() {
+                return this.getValue();
+            });
+            def(AST_UnaryPrefix, function() {
+                var e = this.expression;
+                switch (this.operator) {
+                  case "!":
+                    return !ev(e);
+
+                  case "typeof":
+                    if (e instanceof AST_Function) return typeof function() {};
+                    e = ev(e);
+                    if (e instanceof RegExp) throw def;
+                    return typeof e;
+
+                  case "void":
+                    return void ev(e);
+
+                  case "~":
+                    return ~ev(e);
+
+                  case "-":
+                    e = ev(e);
+                    if (e === 0) throw def;
+                    return -e;
+
+                  case "+":
+                    return +ev(e);
+                }
+                throw def;
+            });
+            def(AST_Binary, function() {
+                var left = this.left, right = this.right;
+                switch (this.operator) {
+                  case "&&":
+                    return ev(left) && ev(right);
+
+                  case "||":
+                    return ev(left) || ev(right);
+
+                  case "|":
+                    return ev(left) | ev(right);
+
+                  case "&":
+                    return ev(left) & ev(right);
+
+                  case "^":
+                    return ev(left) ^ ev(right);
+
+                  case "+":
+                    return ev(left) + ev(right);
+
+                  case "*":
+                    return ev(left) * ev(right);
+
+                  case "/":
+                    return ev(left) / ev(right);
+
+                  case "%":
+                    return ev(left) % ev(right);
+
+                  case "-":
+                    return ev(left) - ev(right);
+
+                  case "<<":
+                    return ev(left) << ev(right);
+
+                  case ">>":
+                    return ev(left) >> ev(right);
+
+                  case ">>>":
+                    return ev(left) >>> ev(right);
+
+                  case "==":
+                    return ev(left) == ev(right);
+
+                  case "===":
+                    return ev(left) === ev(right);
+
+                  case "!=":
+                    return ev(left) != ev(right);
+
+                  case "!==":
+                    return ev(left) !== ev(right);
+
+                  case "<":
+                    return ev(left) < ev(right);
+
+                  case "<=":
+                    return ev(left) <= ev(right);
+
+                  case ">":
+                    return ev(left) > ev(right);
+
+                  case ">=":
+                    return ev(left) >= ev(right);
+
+                  case "in":
+                    return ev(left) in ev(right);
+
+                  case "instanceof":
+                    return ev(left) instanceof ev(right);
+                }
+                throw def;
+            });
+            def(AST_Conditional, function() {
+                return ev(this.condition) ? ev(this.consequent) : ev(this.alternative);
+            });
+            def(AST_SymbolRef, function() {
+                var d = this.definition();
+                if (d && d.constant && d.init) return ev(d.init);
+                throw def;
+            });
+        })(function(node, func) {
+            node.DEFMETHOD("_eval", func);
+        });
+        (function(def) {
+            function basic_negation(exp) {
+                return make_node(AST_UnaryPrefix, exp, {
+                    operator: "!",
+                    expression: exp
+                });
+            }
+            def(AST_Node, function() {
+                return basic_negation(this);
+            });
+            def(AST_Statement, function() {
+                throw new Error("Cannot negate a statement");
+            });
+            def(AST_Function, function() {
+                return basic_negation(this);
+            });
+            def(AST_UnaryPrefix, function() {
+                if (this.operator == "!") return this.expression;
+                return basic_negation(this);
+            });
+            def(AST_Seq, function(compressor) {
+                var self = this.clone();
+                self.cdr = self.cdr.negate(compressor);
+                return self;
+            });
+            def(AST_Conditional, function(compressor) {
+                var self = this.clone();
+                self.consequent = self.consequent.negate(compressor);
+                self.alternative = self.alternative.negate(compressor);
+                return best_of(basic_negation(this), self);
+            });
+            def(AST_Binary, function(compressor) {
+                var self = this.clone(), op = this.operator;
+                if (compressor.option("unsafe_comps")) {
+                    switch (op) {
+                      case "<=":
+                        self.operator = ">";
+                        return self;
+
+                      case "<":
+                        self.operator = ">=";
+                        return self;
+
+                      case ">=":
+                        self.operator = "<";
+                        return self;
+
+                      case ">":
+                        self.operator = "<=";
+                        return self;
+                    }
+                }
+                switch (op) {
+                  case "==":
+                    self.operator = "!=";
+                    return self;
+
+                  case "!=":
+                    self.operator = "==";
+                    return self;
+
+                  case "===":
+                    self.operator = "!==";
+                    return self;
+
+                  case "!==":
+                    self.operator = "===";
+                    return self;
+
+                  case "&&":
+                    self.operator = "||";
+                    self.left = self.left.negate(compressor);
+                    self.right = self.right.negate(compressor);
+                    return best_of(basic_negation(this), self);
+
+                  case "||":
+                    self.operator = "&&";
+                    self.left = self.left.negate(compressor);
+                    self.right = self.right.negate(compressor);
+                    return best_of(basic_negation(this), self);
+                }
+                return basic_negation(this);
+            });
+        })(function(node, func) {
+            node.DEFMETHOD("negate", function(compressor) {
+                return func.call(this, compressor);
+            });
+        });
+        (function(def) {
+            def(AST_Node, function() {
+                return true;
+            });
+            def(AST_EmptyStatement, function() {
+                return false;
+            });
+            def(AST_Constant, function() {
+                return false;
+            });
+            def(AST_This, function() {
+                return false;
+            });
+            def(AST_Block, function() {
+                for (var i = this.body.length; --i >= 0; ) {
+                    if (this.body[i].has_side_effects()) return true;
+                }
+                return false;
+            });
+            def(AST_SimpleStatement, function() {
+                return this.body.has_side_effects();
+            });
+            def(AST_Defun, function() {
+                return true;
+            });
+            def(AST_Function, function() {
+                return false;
+            });
+            def(AST_Binary, function() {
+                return this.left.has_side_effects() || this.right.has_side_effects();
+            });
+            def(AST_Assign, function() {
+                return true;
+            });
+            def(AST_Conditional, function() {
+                return this.condition.has_side_effects() || this.consequent.has_side_effects() || this.alternative.has_side_effects();
+            });
+            def(AST_Unary, function() {
+                return this.operator == "delete" || this.operator == "++" || this.operator == "--" || this.expression.has_side_effects();
+            });
+            def(AST_SymbolRef, function() {
+                return false;
+            });
+            def(AST_Object, function() {
+                for (var i = this.properties.length; --i >= 0; ) if (this.properties[i].has_side_effects()) return true;
+                return false;
+            });
+            def(AST_ObjectProperty, function() {
+                return this.value.has_side_effects();
+            });
+            def(AST_Array, function() {
+                for (var i = this.elements.length; --i >= 0; ) if (this.elements[i].has_side_effects()) return true;
+                return false;
+            });
+            def(AST_PropAccess, function() {
+                return true;
+            });
+            def(AST_Seq, function() {
+                return this.car.has_side_effects() || this.cdr.has_side_effects();
+            });
+        })(function(node, func) {
+            node.DEFMETHOD("has_side_effects", func);
+        });
+        function aborts(thing) {
+            return thing && thing.aborts();
+        }
+        (function(def) {
+            def(AST_Statement, function() {
+                return null;
+            });
+            def(AST_Jump, function() {
+                return this;
+            });
+            function block_aborts() {
+                var n = this.body.length;
+                return n > 0 && aborts(this.body[n - 1]);
+            }
+            def(AST_BlockStatement, block_aborts);
+            def(AST_SwitchBranch, block_aborts);
+            def(AST_If, function() {
+                return this.alternative && aborts(this.body) && aborts(this.alternative);
+            });
+        })(function(node, func) {
+            node.DEFMETHOD("aborts", func);
+        });
+        OPT(AST_Directive, function(self, compressor) {
+            if (self.scope.has_directive(self.value) !== self.scope) {
+                return make_node(AST_EmptyStatement, self);
+            }
+            return self;
+        });
+        OPT(AST_Debugger, function(self, compressor) {
+            if (compressor.option("drop_debugger")) return make_node(AST_EmptyStatement, self);
+            return self;
+        });
+        OPT(AST_LabeledStatement, function(self, compressor) {
+            if (self.body instanceof AST_Break && compressor.loopcontrol_target(self.body.label) === self.body) {
+                return make_node(AST_EmptyStatement, self);
+            }
+            return self.label.references.length == 0 ? self.body : self;
+        });
+        OPT(AST_Block, function(self, compressor) {
+            self.body = tighten_body(self.body, compressor);
+            return self;
+        });
+        OPT(AST_BlockStatement, function(self, compressor) {
+            self.body = tighten_body(self.body, compressor);
+            switch (self.body.length) {
+              case 1:
+                return self.body[0];
+
+              case 0:
+                return make_node(AST_EmptyStatement, self);
+            }
+            return self;
+        });
+        AST_Scope.DEFMETHOD("drop_unused", function(compressor) {
+            var self = this;
+            if (compressor.option("unused") && !(self instanceof AST_Toplevel) && !self.uses_eval) {
+                var in_use = [];
+                var initializations = new Dictionary();
+                var scope = this;
+                var tw = new TreeWalker(function(node, descend) {
+                    if (node !== self) {
+                        if (node instanceof AST_Defun) {
+                            initializations.add(node.name.name, node);
+                            return true;
+                        }
+                        if (node instanceof AST_Definitions && scope === self) {
+                            node.definitions.forEach(function(def) {
+                                if (def.value) {
+                                    initializations.add(def.name.name, def.value);
+                                    if (def.value.has_side_effects()) {
+                                        def.value.walk(tw);
+                                    }
+                                }
+                            });
+                            return true;
+                        }
+                        if (node instanceof AST_SymbolRef) {
+                            push_uniq(in_use, node.definition());
+                            return true;
+                        }
+                        if (node instanceof AST_Scope) {
+                            var save_scope = scope;
+                            scope = node;
+                            descend();
+                            scope = save_scope;
+                            return true;
+                        }
+                    }
+                });
+                self.walk(tw);
+                for (var i = 0; i < in_use.length; ++i) {
+                    in_use[i].orig.forEach(function(decl) {
+                        var init = initializations.get(decl.name);
+                        if (init) init.forEach(function(init) {
+                            var tw = new TreeWalker(function(node) {
+                                if (node instanceof AST_SymbolRef) {
+                                    push_uniq(in_use, node.definition());
+                                }
+                            });
+                            init.walk(tw);
+                        });
+                    });
+                }
+                var tt = new TreeTransformer(function before(node, descend, in_list) {
+                    if (node instanceof AST_Lambda && !(node instanceof AST_Accessor)) {
+                        for (var a = node.argnames, i = a.length; --i >= 0; ) {
+                            var sym = a[i];
+                            if (sym.unreferenced()) {
+                                a.pop();
+                                compressor.warn("Dropping unused function argument {name} [{file}:{line},{col}]", {
+                                    name: sym.name,
+                                    file: sym.start.file,
+                                    line: sym.start.line,
+                                    col: sym.start.col
+                                });
+                            } else break;
+                        }
+                    }
+                    if (node instanceof AST_Defun && node !== self) {
+                        if (!member(node.name.definition(), in_use)) {
+                            compressor.warn("Dropping unused function {name} [{file}:{line},{col}]", {
+                                name: node.name.name,
+                                file: node.name.start.file,
+                                line: node.name.start.line,
+                                col: node.name.start.col
+                            });
+                            return make_node(AST_EmptyStatement, node);
+                        }
+                        return node;
+                    }
+                    if (node instanceof AST_Definitions && !(tt.parent() instanceof AST_ForIn)) {
+                        var def = node.definitions.filter(function(def) {
+                            if (member(def.name.definition(), in_use)) return true;
+                            var w = {
+                                name: def.name.name,
+                                file: def.name.start.file,
+                                line: def.name.start.line,
+                                col: def.name.start.col
+                            };
+                            if (def.value && def.value.has_side_effects()) {
+                                def._unused_side_effects = true;
+                                compressor.warn("Side effects in initialization of unused variable {name} [{file}:{line},{col}]", w);
+                                return true;
+                            }
+                            compressor.warn("Dropping unused variable {name} [{file}:{line},{col}]", w);
+                            return false;
+                        });
+                        def = mergeSort(def, function(a, b) {
+                            if (!a.value && b.value) return -1;
+                            if (!b.value && a.value) return 1;
+                            return 0;
+                        });
+                        var side_effects = [];
+                        for (var i = 0; i < def.length; ) {
+                            var x = def[i];
+                            if (x._unused_side_effects) {
+                                side_effects.push(x.value);
+                                def.splice(i, 1);
+                            } else {
+                                if (side_effects.length > 0) {
+                                    side_effects.push(x.value);
+                                    x.value = AST_Seq.from_array(side_effects);
+                                    side_effects = [];
+                                }
+                                ++i;
+                            }
+                        }
+                        if (side_effects.length > 0) {
+                            side_effects = make_node(AST_BlockStatement, node, {
+                                body: [ make_node(AST_SimpleStatement, node, {
+                                    body: AST_Seq.from_array(side_effects)
+                                }) ]
+                            });
+                        } else {
+                            side_effects = null;
+                        }
+                        if (def.length == 0 && !side_effects) {
+                            return make_node(AST_EmptyStatement, node);
+                        }
+                        if (def.length == 0) {
+                            return side_effects;
+                        }
+                        node.definitions = def;
+                        if (side_effects) {
+                            side_effects.body.unshift(node);
+                            node = side_effects;
+                        }
+                        return node;
+                    }
+                    if (node instanceof AST_For && node.init instanceof AST_BlockStatement) {
+                        descend(node, this);
+                        var body = node.init.body.slice(0, -1);
+                        node.init = node.init.body.slice(-1)[0].body;
+                        body.push(node);
+                        return in_list ? MAP.splice(body) : make_node(AST_BlockStatement, node, {
+                            body: body
+                        });
+                    }
+                    if (node instanceof AST_Scope && node !== self) return node;
+                });
+                self.transform(tt);
+            }
+        });
+        AST_Scope.DEFMETHOD("hoist_declarations", function(compressor) {
+            var hoist_funs = compressor.option("hoist_funs");
+            var hoist_vars = compressor.option("hoist_vars");
+            var self = this;
+            if (hoist_funs || hoist_vars) {
+                var dirs = [];
+                var hoisted = [];
+                var vars = new Dictionary(), vars_found = 0, var_decl = 0;
+                self.walk(new TreeWalker(function(node) {
+                    if (node instanceof AST_Scope && node !== self) return true;
+                    if (node instanceof AST_Var) {
+                        ++var_decl;
+                        return true;
+                    }
+                }));
+                hoist_vars = hoist_vars && var_decl > 1;
+                var tt = new TreeTransformer(function before(node) {
+                    if (node !== self) {
+                        if (node instanceof AST_Directive) {
+                            dirs.push(node);
+                            return make_node(AST_EmptyStatement, node);
+                        }
+                        if (node instanceof AST_Defun && hoist_funs) {
+                            hoisted.push(node);
+                            return make_node(AST_EmptyStatement, node);
+                        }
+                        if (node instanceof AST_Var && hoist_vars) {
+                            node.definitions.forEach(function(def) {
+                                vars.set(def.name.name, def);
+                                ++vars_found;
+                            });
+                            var seq = node.to_assignments();
+                            var p = tt.parent();
+                            if (p instanceof AST_ForIn && p.init === node) {
+                                if (seq == null) return node.definitions[0].name;
+                                return seq;
+                            }
+                            if (p instanceof AST_For && p.init === node) {
+                                return seq;
+                            }
+                            if (!seq) return make_node(AST_EmptyStatement, node);
+                            return make_node(AST_SimpleStatement, node, {
+                                body: seq
+                            });
+                        }
+                        if (node instanceof AST_Scope) return node;
+                    }
+                });
+                self = self.transform(tt);
+                if (vars_found > 0) {
+                    var defs = [];
+                    vars.each(function(def, name) {
+                        if (self instanceof AST_Lambda && find_if(function(x) {
+                            return x.name == def.name.name;
+                        }, self.argnames)) {
+                            vars.del(name);
+                        } else {
+                            def = def.clone();
+                            def.value = null;
+                            defs.push(def);
+                            vars.set(name, def);
+                        }
+                    });
+                    if (defs.length > 0) {
+                        for (var i = 0; i < self.body.length; ) {
+                            if (self.body[i] instanceof AST_SimpleStatement) {
+                                var expr = self.body[i].body, sym, assign;
+                                if (expr instanceof AST_Assign && expr.operator == "=" && (sym = expr.left) instanceof AST_Symbol && vars.has(sym.name)) {
+                                    var def = vars.get(sym.name);
+                                    if (def.value) break;
+                                    def.value = expr.right;
+                                    remove(defs, def);
+                                    defs.push(def);
+                                    self.body.splice(i, 1);
+                                    continue;
+                                }
+                                if (expr instanceof AST_Seq && (assign = expr.car) instanceof AST_Assign && assign.operator == "=" && (sym = assign.left) instanceof AST_Symbol && vars.has(sym.name)) {
+                                    var def = vars.get(sym.name);
+                                    if (def.value) break;
+                                    def.value = assign.right;
+                                    remove(defs, def);
+                                    defs.push(def);
+                                    self.body[i].body = expr.cdr;
+                                    continue;
+                                }
+                            }
+                            if (self.body[i] instanceof AST_EmptyStatement) {
+                                self.body.splice(i, 1);
+                                continue;
+                            }
+                            if (self.body[i] instanceof AST_BlockStatement) {
+                                var tmp = [ i, 1 ].concat(self.body[i].body);
+                                self.body.splice.apply(self.body, tmp);
+                                continue;
+                            }
+                            break;
+                        }
+                        defs = make_node(AST_Var, self, {
+                            definitions: defs
+                        });
+                        hoisted.push(defs);
+                    }
+                }
+                self.body = dirs.concat(hoisted, self.body);
+            }
+            return self;
+        });
+        OPT(AST_SimpleStatement, function(self, compressor) {
+            if (compressor.option("side_effects")) {
+                if (!self.body.has_side_effects()) {
+                    compressor.warn("Dropping side-effect-free statement [{file}:{line},{col}]", self.start);
+                    return make_node(AST_EmptyStatement, self);
+                }
+            }
+            return self;
+        });
+        OPT(AST_DWLoop, function(self, compressor) {
+            var cond = self.condition.evaluate(compressor);
+            self.condition = cond[0];
+            if (!compressor.option("loops")) return self;
+            if (cond.length > 1) {
+                if (cond[1]) {
+                    return make_node(AST_For, self, {
+                        body: self.body
+                    });
+                } else if (self instanceof AST_While) {
+                    if (compressor.option("dead_code")) {
+                        var a = [];
+                        extract_declarations_from_unreachable_code(compressor, self.body, a);
+                        return make_node(AST_BlockStatement, self, {
+                            body: a
+                        });
+                    }
+                }
+            }
+            return self;
+        });
+        function if_break_in_loop(self, compressor) {
+            function drop_it(rest) {
+                rest = as_statement_array(rest);
+                if (self.body instanceof AST_BlockStatement) {
+                    self.body = self.body.clone();
+                    self.body.body = rest.concat(self.body.body.slice(1));
+                    self.body = self.body.transform(compressor);
+                } else {
+                    self.body = make_node(AST_BlockStatement, self.body, {
+                        body: rest
+                    }).transform(compressor);
+                }
+                if_break_in_loop(self, compressor);
+            }
+            var first = self.body instanceof AST_BlockStatement ? self.body.body[0] : self.body;
+            if (first instanceof AST_If) {
+                if (first.body instanceof AST_Break && compressor.loopcontrol_target(first.body.label) === self) {
+                    if (self.condition) {
+                        self.condition = make_node(AST_Binary, self.condition, {
+                            left: self.condition,
+                            operator: "&&",
+                            right: first.condition.negate(compressor)
+                        });
+                    } else {
+                        self.condition = first.condition.negate(compressor);
+                    }
+                    drop_it(first.alternative);
+                } else if (first.alternative instanceof AST_Break && compressor.loopcontrol_target(first.alternative.label) === self) {
+                    if (self.condition) {
+                        self.condition = make_node(AST_Binary, self.condition, {
+                            left: self.condition,
+                            operator: "&&",
+                            right: first.condition
+                        });
+                    } else {
+                        self.condition = first.condition;
+                    }
+                    drop_it(first.body);
+                }
+            }
+        }
+        OPT(AST_While, function(self, compressor) {
+            if (!compressor.option("loops")) return self;
+            self = AST_DWLoop.prototype.optimize.call(self, compressor);
+            if (self instanceof AST_While) {
+                if_break_in_loop(self, compressor);
+                self = make_node(AST_For, self, self).transform(compressor);
+            }
+            return self;
+        });
+        OPT(AST_For, function(self, compressor) {
+            var cond = self.condition;
+            if (cond) {
+                cond = cond.evaluate(compressor);
+                self.condition = cond[0];
+            }
+            if (!compressor.option("loops")) return self;
+            if (cond) {
+                if (cond.length > 1 && !cond[1]) {
+                    if (compressor.option("dead_code")) {
+                        var a = [];
+                        if (self.init instanceof AST_Statement) {
+                            a.push(self.init);
+                        } else if (self.init) {
+                            a.push(make_node(AST_SimpleStatement, self.init, {
+                                body: self.init
+                            }));
+                        }
+                        extract_declarations_from_unreachable_code(compressor, self.body, a);
+                        return make_node(AST_BlockStatement, self, {
+                            body: a
+                        });
+                    }
+                }
+            }
+            if_break_in_loop(self, compressor);
+            return self;
+        });
+        OPT(AST_If, function(self, compressor) {
+            if (!compressor.option("conditionals")) return self;
+            var cond = self.condition.evaluate(compressor);
+            self.condition = cond[0];
+            if (cond.length > 1) {
+                if (cond[1]) {
+                    compressor.warn("Condition always true [{file}:{line},{col}]", self.condition.start);
+                    if (compressor.option("dead_code")) {
+                        var a = [];
+                        if (self.alternative) {
+                            extract_declarations_from_unreachable_code(compressor, self.alternative, a);
+                        }
+                        a.push(self.body);
+                        return make_node(AST_BlockStatement, self, {
+                            body: a
+                        }).transform(compressor);
+                    }
+                } else {
+                    compressor.warn("Condition always false [{file}:{line},{col}]", self.condition.start);
+                    if (compressor.option("dead_code")) {
+                        var a = [];
+                        extract_declarations_from_unreachable_code(compressor, self.body, a);
+                        if (self.alternative) a.push(self.alternative);
+                        return make_node(AST_BlockStatement, self, {
+                            body: a
+                        }).transform(compressor);
+                    }
+                }
+            }
+            if (is_empty(self.alternative)) self.alternative = null;
+            var negated = self.condition.negate(compressor);
+            var negated_is_best = best_of(self.condition, negated) === negated;
+            if (self.alternative && negated_is_best) {
+                negated_is_best = false;
+                self.condition = negated;
+                var tmp = self.body;
+                self.body = self.alternative || make_node(AST_EmptyStatement);
+                self.alternative = tmp;
+            }
+            if (is_empty(self.body) && is_empty(self.alternative)) {
+                return make_node(AST_SimpleStatement, self.condition, {
+                    body: self.condition
+                }).transform(compressor);
+            }
+            if (self.body instanceof AST_SimpleStatement && self.alternative instanceof AST_SimpleStatement) {
+                return make_node(AST_SimpleStatement, self, {
+                    body: make_node(AST_Conditional, self, {
+                        condition: self.condition,
+                        consequent: self.body.body,
+                        alternative: self.alternative.body
+                    })
+                }).transform(compressor);
+            }
+            if (is_empty(self.alternative) && self.body instanceof AST_SimpleStatement) {
+                if (negated_is_best) return make_node(AST_SimpleStatement, self, {
+                    body: make_node(AST_Binary, self, {
+                        operator: "||",
+                        left: negated,
+                        right: self.body.body
+                    })
+                }).transform(compressor);
+                return make_node(AST_SimpleStatement, self, {
+                    body: make_node(AST_Binary, self, {
+                        operator: "&&",
+                        left: self.condition,
+                        right: self.body.body
+                    })
+                }).transform(compressor);
+            }
+            if (self.body instanceof AST_EmptyStatement && self.alternative && self.alternative instanceof AST_SimpleStatement) {
+                return make_node(AST_SimpleStatement, self, {
+                    body: make_node(AST_Binary, self, {
+                        operator: "||",
+                        left: self.condition,
+                        right: self.alternative.body
+                    })
+                }).transform(compressor);
+            }
+            if (self.body instanceof AST_Exit && self.alternative instanceof AST_Exit && self.body.TYPE == self.alternative.TYPE) {
+                return make_node(self.body.CTOR, self, {
+                    value: make_node(AST_Conditional, self, {
+                        condition: self.condition,
+                        consequent: self.body.value || make_node(AST_Undefined, self.body).optimize(compressor),
+                        alternative: self.alternative.value || make_node(AST_Undefined, self.alternative).optimize(compressor)
+                    })
+                }).transform(compressor);
+            }
+            if (self.body instanceof AST_If && !self.body.alternative && !self.alternative) {
+                self.condition = make_node(AST_Binary, self.condition, {
+                    operator: "&&",
+                    left: self.condition,
+                    right: self.body.condition
+                }).transform(compressor);
+                self.body = self.body.body;
+            }
+            if (aborts(self.body)) {
+                if (self.alternative) {
+                    var alt = self.alternative;
+                    self.alternative = null;
+                    return make_node(AST_BlockStatement, self, {
+                        body: [ self, alt ]
+                    }).transform(compressor);
+                }
+            }
+            if (aborts(self.alternative)) {
+                var body = self.body;
+                self.body = self.alternative;
+                self.condition = negated_is_best ? negated : self.condition.negate(compressor);
+                self.alternative = null;
+                return make_node(AST_BlockStatement, self, {
+                    body: [ self, body ]
+                }).transform(compressor);
+            }
+            return self;
+        });
+        OPT(AST_Switch, function(self, compressor) {
+            if (self.body.length == 0 && compressor.option("conditionals")) {
+                return make_node(AST_SimpleStatement, self, {
+                    body: self.expression
+                }).transform(compressor);
+            }
+            for (;;) {
+                var last_branch = self.body[self.body.length - 1];
+                if (last_branch) {
+                    var stat = last_branch.body[last_branch.body.length - 1];
+                    if (stat instanceof AST_Break && loop_body(compressor.loopcontrol_target(stat.label)) === self) last_branch.body.pop();
+                    if (last_branch instanceof AST_Default && last_branch.body.length == 0) {
+                        self.body.pop();
+                        continue;
+                    }
+                }
+                break;
+            }
+            var exp = self.expression.evaluate(compressor);
+            out: if (exp.length == 2) try {
+                self.expression = exp[0];
+                if (!compressor.option("dead_code")) break out;
+                var value = exp[1];
+                var in_if = false;
+                var in_block = false;
+                var started = false;
+                var stopped = false;
+                var ruined = false;
+                var tt = new TreeTransformer(function(node, descend, in_list) {
+                    if (node instanceof AST_Lambda || node instanceof AST_SimpleStatement) {
+                        return node;
+                    } else if (node instanceof AST_Switch && node === self) {
+                        node = node.clone();
+                        descend(node, this);
+                        return ruined ? node : make_node(AST_BlockStatement, node, {
+                            body: node.body.reduce(function(a, branch) {
+                                return a.concat(branch.body);
+                            }, [])
+                        }).transform(compressor);
+                    } else if (node instanceof AST_If || node instanceof AST_Try) {
+                        var save = in_if;
+                        in_if = !in_block;
+                        descend(node, this);
+                        in_if = save;
+                        return node;
+                    } else if (node instanceof AST_StatementWithBody || node instanceof AST_Switch) {
+                        var save = in_block;
+                        in_block = true;
+                        descend(node, this);
+                        in_block = save;
+                        return node;
+                    } else if (node instanceof AST_Break && this.loopcontrol_target(node.label) === self) {
+                        if (in_if) {
+                            ruined = true;
+                            return node;
+                        }
+                        if (in_block) return node;
+                        stopped = true;
+                        return in_list ? MAP.skip : make_node(AST_EmptyStatement, node);
+                    } else if (node instanceof AST_SwitchBranch && this.parent() === self) {
+                        if (stopped) return MAP.skip;
+                        if (node instanceof AST_Case) {
+                            var exp = node.expression.evaluate(compressor);
+                            if (exp.length < 2) {
+                                throw self;
+                            }
+                            if (exp[1] === value || started) {
+                                started = true;
+                                if (aborts(node)) stopped = true;
+                                descend(node, this);
+                                return node;
+                            }
+                            return MAP.skip;
+                        }
+                        descend(node, this);
+                        return node;
+                    }
+                });
+                tt.stack = compressor.stack.slice();
+                self = self.transform(tt);
+            } catch (ex) {
+                if (ex !== self) throw ex;
+            }
+            return self;
+        });
+        OPT(AST_Case, function(self, compressor) {
+            self.body = tighten_body(self.body, compressor);
+            return self;
+        });
+        OPT(AST_Try, function(self, compressor) {
+            self.body = tighten_body(self.body, compressor);
+            return self;
+        });
+        AST_Definitions.DEFMETHOD("remove_initializers", function() {
+            this.definitions.forEach(function(def) {
+                def.value = null;
+            });
+        });
+        AST_Definitions.DEFMETHOD("to_assignments", function() {
+            var assignments = this.definitions.reduce(function(a, def) {
+                if (def.value) {
+                    var name = make_node(AST_SymbolRef, def.name, def.name);
+                    a.push(make_node(AST_Assign, def, {
+                        operator: "=",
+                        left: name,
+                        right: def.value
+                    }));
+                }
+                return a;
+            }, []);
+            if (assignments.length == 0) return null;
+            return AST_Seq.from_array(assignments);
+        });
+        OPT(AST_Definitions, function(self, compressor) {
+            if (self.definitions.length == 0) return make_node(AST_EmptyStatement, self);
+            return self;
+        });
+        OPT(AST_Function, function(self, compressor) {
+            self = AST_Lambda.prototype.optimize.call(self, compressor);
+            if (compressor.option("unused")) {
+                if (self.name && self.name.unreferenced()) {
+                    self.name = null;
+                }
+            }
+            return self;
+        });
+        OPT(AST_Call, function(self, compressor) {
+            if (compressor.option("unsafe")) {
+                var exp = self.expression;
+                if (exp instanceof AST_SymbolRef && exp.undeclared()) {
+                    switch (exp.name) {
+                      case "Array":
+                        if (self.args.length != 1) {
+                            return make_node(AST_Array, self, {
+                                elements: self.args
+                            });
+                        }
+                        break;
+
+                      case "Object":
+                        if (self.args.length == 0) {
+                            return make_node(AST_Object, self, {
+                                properties: []
+                            });
+                        }
+                        break;
+
+                      case "String":
+                        if (self.args.length == 0) return make_node(AST_String, self, {
+                            value: ""
+                        });
+                        return make_node(AST_Binary, self, {
+                            left: self.args[0],
+                            operator: "+",
+                            right: make_node(AST_String, self, {
+                                value: ""
+                            })
+                        });
+
+                      case "Function":
+                        if (all(self.args, function(x) {
+                            return x instanceof AST_String;
+                        })) {
+                            try {
+                                var code = "(function(" + self.args.slice(0, -1).map(function(arg) {
+                                    return arg.value;
+                                }).join(",") + "){" + self.args[self.args.length - 1].value + "})()";
+                                var ast = parse(code);
+                                ast.figure_out_scope();
+                                var comp = new Compressor(compressor.options);
+                                ast = ast.transform(comp);
+                                ast.figure_out_scope();
+                                ast.mangle_names();
+                                var fun = ast.body[0].body.expression;
+                                var args = fun.argnames.map(function(arg, i) {
+                                    return make_node(AST_String, self.args[i], {
+                                        value: arg.print_to_string()
+                                    });
+                                });
+                                var code = OutputStream();
+                                AST_BlockStatement.prototype._codegen.call(fun, fun, code);
+                                code = code.toString().replace(/^\{|\}$/g, "");
+                                args.push(make_node(AST_String, self.args[self.args.length - 1], {
+                                    value: code
+                                }));
+                                self.args = args;
+                                return self;
+                            } catch (ex) {
+                                if (ex instanceof JS_Parse_Error) {
+                                    compressor.warn("Error parsing code passed to new Function [{file}:{line},{col}]", self.args[self.args.length - 1].start);
+                                    compressor.warn(ex.toString());
+                                } else {
+                                    console.log(ex);
+                                }
+                            }
+                        }
+                        break;
+                    }
+                } else if (exp instanceof AST_Dot && exp.property == "toString" && self.args.length == 0) {
+                    return make_node(AST_Binary, self, {
+                        left: make_node(AST_String, self, {
+                            value: ""
+                        }),
+                        operator: "+",
+                        right: exp.expression
+                    }).transform(compressor);
+                }
+            }
+            if (compressor.option("side_effects")) {
+                if (self.expression instanceof AST_Function && self.args.length == 0 && !AST_Block.prototype.has_side_effects.call(self.expression)) {
+                    return make_node(AST_Undefined, self).transform(compressor);
+                }
+            }
+            return self;
+        });
+        OPT(AST_New, function(self, compressor) {
+            if (compressor.option("unsafe")) {
+                var exp = self.expression;
+                if (exp instanceof AST_SymbolRef && exp.undeclared()) {
+                    switch (exp.name) {
+                      case "Object":
+                      case "RegExp":
+                      case "Function":
+                      case "Error":
+                      case "Array":
+                        return make_node(AST_Call, self, self).transform(compressor);
+                    }
+                }
+            }
+            return self;
+        });
+        OPT(AST_Seq, function(self, compressor) {
+            if (!compressor.option("side_effects")) return self;
+            if (!self.car.has_side_effects()) {
+                var p;
+                if (!(self.cdr instanceof AST_SymbolRef && self.cdr.name == "eval" && self.cdr.undeclared() && (p = compressor.parent()) instanceof AST_Call && p.expression === self)) {
+                    return self.cdr;
+                }
+            }
+            if (compressor.option("cascade")) {
+                if (self.car instanceof AST_Assign && !self.car.left.has_side_effects() && self.car.left.equivalent_to(self.cdr)) {
+                    return self.car;
+                }
+                if (!self.car.has_side_effects() && !self.cdr.has_side_effects() && self.car.equivalent_to(self.cdr)) {
+                    return self.car;
+                }
+            }
+            return self;
+        });
+        AST_Unary.DEFMETHOD("lift_sequences", function(compressor) {
+            if (compressor.option("sequences")) {
+                if (this.expression instanceof AST_Seq) {
+                    var seq = this.expression;
+                    var x = seq.to_array();
+                    this.expression = x.pop();
+                    x.push(this);
+                    seq = AST_Seq.from_array(x).transform(compressor);
+                    return seq;
+                }
+            }
+            return this;
+        });
+        OPT(AST_UnaryPostfix, function(self, compressor) {
+            return self.lift_sequences(compressor);
+        });
+        OPT(AST_UnaryPrefix, function(self, compressor) {
+            self = self.lift_sequences(compressor);
+            var e = self.expression;
+            if (compressor.option("booleans") && compressor.in_boolean_context()) {
+                switch (self.operator) {
+                  case "!":
+                    if (e instanceof AST_UnaryPrefix && e.operator == "!") {
+                        return e.expression;
+                    }
+                    break;
+
+                  case "typeof":
+                    compressor.warn("Boolean expression always true [{file}:{line},{col}]", self.start);
+                    return make_node(AST_True, self);
+                }
+                if (e instanceof AST_Binary && self.operator == "!") {
+                    self = best_of(self, e.negate(compressor));
+                }
+            }
+            return self.evaluate(compressor)[0];
+        });
+        AST_Binary.DEFMETHOD("lift_sequences", function(compressor) {
+            if (compressor.option("sequences")) {
+                if (this.left instanceof AST_Seq) {
+                    var seq = this.left;
+                    var x = seq.to_array();
+                    this.left = x.pop();
+                    x.push(this);
+                    seq = AST_Seq.from_array(x).transform(compressor);
+                    return seq;
+                }
+                if (this.right instanceof AST_Seq && !(this.operator == "||" || this.operator == "&&") && !this.left.has_side_effects()) {
+                    var seq = this.right;
+                    var x = seq.to_array();
+                    this.right = x.pop();
+                    x.push(this);
+                    seq = AST_Seq.from_array(x).transform(compressor);
+                    return seq;
+                }
+            }
+            return this;
+        });
+        var commutativeOperators = makePredicate("== === != !== * & | ^");
+        OPT(AST_Binary, function(self, compressor) {
+            var reverse = compressor.has_directive("use asm") ? noop : function(op, force) {
+                if (force || !(self.left.has_side_effects() || self.right.has_side_effects())) {
+                    if (op) self.operator = op;
+                    var tmp = self.left;
+                    self.left = self.right;
+                    self.right = tmp;
+                }
+            };
+            if (commutativeOperators(self.operator)) {
+                if (self.right instanceof AST_Constant && !(self.left instanceof AST_Constant)) {
+                    reverse(null, true);
+                }
+            }
+            self = self.lift_sequences(compressor);
+            if (compressor.option("comparisons")) switch (self.operator) {
+              case "===":
+              case "!==":
+                if (self.left.is_string(compressor) && self.right.is_string(compressor) || self.left.is_boolean() && self.right.is_boolean()) {
+                    self.operator = self.operator.substr(0, 2);
+                }
+
+              case "==":
+              case "!=":
+                if (self.left instanceof AST_String && self.left.value == "undefined" && self.right instanceof AST_UnaryPrefix && self.right.operator == "typeof" && compressor.option("unsafe")) {
+                    if (!(self.right.expression instanceof AST_SymbolRef) || !self.right.expression.undeclared()) {
+                        self.right = self.right.expression;
+                        self.left = make_node(AST_Undefined, self.left).optimize(compressor);
+                        if (self.operator.length == 2) self.operator += "=";
+                    }
+                }
+                break;
+            }
+            if (compressor.option("booleans") && compressor.in_boolean_context()) switch (self.operator) {
+              case "&&":
+                var ll = self.left.evaluate(compressor);
+                var rr = self.right.evaluate(compressor);
+                if (ll.length > 1 && !ll[1] || rr.length > 1 && !rr[1]) {
+                    compressor.warn("Boolean && always false [{file}:{line},{col}]", self.start);
+                    return make_node(AST_False, self);
+                }
+                if (ll.length > 1 && ll[1]) {
+                    return rr[0];
+                }
+                if (rr.length > 1 && rr[1]) {
+                    return ll[0];
+                }
+                break;
+
+              case "||":
+                var ll = self.left.evaluate(compressor);
+                var rr = self.right.evaluate(compressor);
+                if (ll.length > 1 && ll[1] || rr.length > 1 && rr[1]) {
+                    compressor.warn("Boolean || always true [{file}:{line},{col}]", self.start);
+                    return make_node(AST_True, self);
+                }
+                if (ll.length > 1 && !ll[1]) {
+                    return rr[0];
+                }
+                if (rr.length > 1 && !rr[1]) {
+                    return ll[0];
+                }
+                break;
+
+              case "+":
+                var ll = self.left.evaluate(compressor);
+                var rr = self.right.evaluate(compressor);
+                if (ll.length > 1 && ll[0] instanceof AST_String && ll[1] || rr.length > 1 && rr[0] instanceof AST_String && rr[1]) {
+                    compressor.warn("+ in boolean context always true [{file}:{line},{col}]", self.start);
+                    return make_node(AST_True, self);
+                }
+                break;
+            }
+            var exp = self.evaluate(compressor);
+            if (exp.length > 1) {
+                if (best_of(exp[0], self) !== self) return exp[0];
+            }
+            if (compressor.option("comparisons")) {
+                if (!(compressor.parent() instanceof AST_Binary) || compressor.parent() instanceof AST_Assign) {
+                    var negated = make_node(AST_UnaryPrefix, self, {
+                        operator: "!",
+                        expression: self.negate(compressor)
+                    });
+                    self = best_of(self, negated);
+                }
+                switch (self.operator) {
+                  case "<":
+                    reverse(">");
+                    break;
+
+                  case "<=":
+                    reverse(">=");
+                    break;
+                }
+            }
+            if (self.operator == "+" && self.right instanceof AST_String && self.right.getValue() === "" && self.left instanceof AST_Binary && self.left.operator == "+" && self.left.is_string(compressor)) {
+                return self.left;
+            }
+            return self;
+        });
+        OPT(AST_SymbolRef, function(self, compressor) {
+            if (self.undeclared()) {
+                var defines = compressor.option("global_defs");
+                if (defines && defines.hasOwnProperty(self.name)) {
+                    return make_node_from_constant(compressor, defines[self.name], self);
+                }
+                switch (self.name) {
+                  case "undefined":
+                    return make_node(AST_Undefined, self);
+
+                  case "NaN":
+                    return make_node(AST_NaN, self);
+
+                  case "Infinity":
+                    return make_node(AST_Infinity, self);
+                }
+            }
+            return self;
+        });
+        OPT(AST_Undefined, function(self, compressor) {
+            if (compressor.option("unsafe")) {
+                var scope = compressor.find_parent(AST_Scope);
+                var undef = scope.find_variable("undefined");
+                if (undef) {
+                    var ref = make_node(AST_SymbolRef, self, {
+                        name: "undefined",
+                        scope: scope,
+                        thedef: undef
+                    });
+                    ref.reference();
+                    return ref;
+                }
+            }
+            return self;
+        });
+        var ASSIGN_OPS = [ "+", "-", "/", "*", "%", ">>", "<<", ">>>", "|", "^", "&" ];
+        OPT(AST_Assign, function(self, compressor) {
+            self = self.lift_sequences(compressor);
+            if (self.operator == "=" && self.left instanceof AST_SymbolRef && self.right instanceof AST_Binary && self.right.left instanceof AST_SymbolRef && self.right.left.name == self.left.name && member(self.right.operator, ASSIGN_OPS)) {
+                self.operator = self.right.operator + "=";
+                self.right = self.right.right;
+            }
+            return self;
+        });
+        OPT(AST_Conditional, function(self, compressor) {
+            if (!compressor.option("conditionals")) return self;
+            if (self.condition instanceof AST_Seq) {
+                var car = self.condition.car;
+                self.condition = self.condition.cdr;
+                return AST_Seq.cons(car, self);
+            }
+            var cond = self.condition.evaluate(compressor);
+            if (cond.length > 1) {
+                if (cond[1]) {
+                    compressor.warn("Condition always true [{file}:{line},{col}]", self.start);
+                    return self.consequent;
+                } else {
+                    compressor.warn("Condition always false [{file}:{line},{col}]", self.start);
+                    return self.alternative;
+                }
+            }
+            var negated = cond[0].negate(compressor);
+            if (best_of(cond[0], negated) === negated) {
+                self = make_node(AST_Conditional, self, {
+                    condition: negated,
+                    consequent: self.alternative,
+                    alternative: self.consequent
+                });
+            }
+            var consequent = self.consequent;
+            var alternative = self.alternative;
+            if (consequent instanceof AST_Assign && alternative instanceof AST_Assign && consequent.operator == alternative.operator && consequent.left.equivalent_to(alternative.left)) {
+                self = make_node(AST_Assign, self, {
+                    operator: consequent.operator,
+                    left: consequent.left,
+                    right: make_node(AST_Conditional, self, {
+                        condition: self.condition,
+                        consequent: consequent.right,
+                        alternative: alternative.right
+                    })
+                });
+            }
+            return self;
+        });
+        OPT(AST_Boolean, function(self, compressor) {
+            if (compressor.option("booleans")) {
+                var p = compressor.parent();
+                if (p instanceof AST_Binary && (p.operator == "==" || p.operator == "!=")) {
+                    compressor.warn("Non-strict equality against boolean: {operator} {value} [{file}:{line},{col}]", {
+                        operator: p.operator,
+                        value: self.value,
+                        file: p.start.file,
+                        line: p.start.line,
+                        col: p.start.col
+                    });
+                    return make_node(AST_Number, self, {
+                        value: +self.value
+                    });
+                }
+                return make_node(AST_UnaryPrefix, self, {
+                    operator: "!",
+                    expression: make_node(AST_Number, self, {
+                        value: 1 - self.value
+                    })
+                });
+            }
+            return self;
+        });
+        OPT(AST_Sub, function(self, compressor) {
+            var prop = self.property;
+            if (prop instanceof AST_String && compressor.option("properties")) {
+                prop = prop.getValue();
+                if (RESERVED_WORDS(prop) ? compressor.option("screw_ie8") : is_identifier_string(prop)) {
+                    return make_node(AST_Dot, self, {
+                        expression: self.expression,
+                        property: prop
+                    });
+                }
+            }
+            return self;
+        });
+        function literals_in_boolean_context(self, compressor) {
+            if (compressor.option("booleans") && compressor.in_boolean_context()) {
+                return make_node(AST_True, self);
+            }
+            return self;
+        }
+        OPT(AST_Array, literals_in_boolean_context);
+        OPT(AST_Object, literals_in_boolean_context);
+        OPT(AST_RegExp, literals_in_boolean_context);
+    })();
+    "use strict";
+    function SourceMap(options) {
+        options = defaults(options, {
+            file: null,
+            root: null,
+            orig: null
+        });
+        var generator = new MOZ_SourceMap.SourceMapGenerator({
+            file: options.file,
+            sourceRoot: options.root
+        });
+        var orig_map = options.orig && new MOZ_SourceMap.SourceMapConsumer(options.orig);
+        function add(source, gen_line, gen_col, orig_line, orig_col, name) {
+            if (orig_map) {
+                var info = orig_map.originalPositionFor({
+                    line: orig_line,
+                    column: orig_col
+                });
+                source = info.source;
+                orig_line = info.line;
+                orig_col = info.column;
+                name = info.name;
+            }
+            generator.addMapping({
+                generated: {
+                    line: gen_line,
+                    column: gen_col
+                },
+                original: {
+                    line: orig_line,
+                    column: orig_col
+                },
+                source: source,
+                name: name
+            });
+        }
+        return {
+            add: add,
+            get: function() {
+                return generator;
+            },
+            toString: function() {
+                return generator.toString();
+            }
+        };
+    }
+    "use strict";
+    (function() {
+        var MOZ_TO_ME = {
+            TryStatement: function(M) {
+                return new AST_Try({
+                    start: my_start_token(M),
+                    end: my_end_token(M),
+                    body: from_moz(M.block).body,
+                    bcatch: from_moz(M.handlers[0]),
+                    bfinally: M.finalizer ? new AST_Finally(from_moz(M.finalizer)) : null
+                });
+            },
+            CatchClause: function(M) {
+                return new AST_Catch({
+                    start: my_start_token(M),
+                    end: my_end_token(M),
+                    argname: from_moz(M.param),
+                    body: from_moz(M.body).body
+                });
+            },
+            ObjectExpression: function(M) {
+                return new AST_Object({
+                    start: my_start_token(M),
+                    end: my_end_token(M),
+                    properties: M.properties.map(function(prop) {
+                        var key = prop.key;
+                        var name = key.type == "Identifier" ? key.name : key.value;
+                        var args = {
+                            start: my_start_token(key),
+                            end: my_end_token(prop.value),
+                            key: name,
+                            value: from_moz(prop.value)
+                        };
+                        switch (prop.kind) {
+                          case "init":
+                            return new AST_ObjectKeyVal(args);
+
+                          case "set":
+                            args.value.name = from_moz(key);
+                            return new AST_ObjectSetter(args);
+
+                          case "get":
+                            args.value.name = from_moz(key);
+                            return new AST_ObjectGetter(args);
+                        }
+                    })
+                });
+            },
+            SequenceExpression: function(M) {
+                return AST_Seq.from_array(M.expressions.map(from_moz));
+            },
+            MemberExpression: function(M) {
+                return new (M.computed ? AST_Sub : AST_Dot)({
+                    start: my_start_token(M),
+                    end: my_end_token(M),
+                    property: M.computed ? from_moz(M.property) : M.property.name,
+                    expression: from_moz(M.object)
+                });
+            },
+            SwitchCase: function(M) {
+                return new (M.test ? AST_Case : AST_Default)({
+                    start: my_start_token(M),
+                    end: my_end_token(M),
+                    expression: from_moz(M.test),
+                    body: M.consequent.map(from_moz)
+                });
+            },
+            Literal: function(M) {
+                var val = M.value, args = {
+                    start: my_start_token(M),
+                    end: my_end_token(M)
+                };
+                if (val === null) return new AST_Null(args);
+                switch (typeof val) {
+                  case "string":
+                    args.value = val;
+                    return new AST_String(args);
+
+                  case "number":
+                    args.value = val;
+                    return new AST_Number(args);
+
+                  case "boolean":
+                    return new (val ? AST_True : AST_False)(args);
+
+                  default:
+                    args.value = val;
+                    return new AST_RegExp(args);
+                }
+            },
+            UnaryExpression: From_Moz_Unary,
+            UpdateExpression: From_Moz_Unary,
+            Identifier: function(M) {
+                var p = FROM_MOZ_STACK[FROM_MOZ_STACK.length - 2];
+                return new (M.name == "this" ? AST_This : p.type == "LabeledStatement" ? AST_Label : p.type == "VariableDeclarator" && p.id === M ? p.kind == "const" ? AST_SymbolConst : AST_SymbolVar : p.type == "FunctionExpression" ? p.id === M ? AST_SymbolLambda : AST_SymbolFunarg : p.type == "FunctionDeclaration" ? p.id === M ? AST_SymbolDefun : AST_SymbolFunarg : p.type == "CatchClause" ? AST_SymbolCatch : p.type == "BreakStatement" || p.type == "ContinueStatement" ? AST_LabelRef : AST_SymbolRef)({
+                    start: my_start_token(M),
+                    end: my_end_token(M),
+                    name: M.name
+                });
+            }
+        };
+        function From_Moz_Unary(M) {
+            var prefix = "prefix" in M ? M.prefix : M.type == "UnaryExpression" ? true : false;
+            return new (prefix ? AST_UnaryPrefix : AST_UnaryPostfix)({
+                start: my_start_token(M),
+                end: my_end_token(M),
+                operator: M.operator,
+                expression: from_moz(M.argument)
+            });
+        }
+        var ME_TO_MOZ = {};
+        map("Node", AST_Node);
+        map("Program", AST_Toplevel, "body@body");
+        map("Function", AST_Function, "id>name, params@argnames, body%body");
+        map("EmptyStatement", AST_EmptyStatement);
+        map("BlockStatement", AST_BlockStatement, "body@body");
+        map("ExpressionStatement", AST_SimpleStatement, "expression>body");
+        map("IfStatement", AST_If, "test>condition, consequent>body, alternate>alternative");
+        map("LabeledStatement", AST_LabeledStatement, "label>label, body>body");
+        map("BreakStatement", AST_Break, "label>label");
+        map("ContinueStatement", AST_Continue, "label>label");
+        map("WithStatement", AST_With, "object>expression, body>body");
+        map("SwitchStatement", AST_Switch, "discriminant>expression, cases@body");
+        map("ReturnStatement", AST_Return, "argument>value");
+        map("ThrowStatement", AST_Throw, "argument>value");
+        map("WhileStatement", AST_While, "test>condition, body>body");
+        map("DoWhileStatement", AST_Do, "test>condition, body>body");
+        map("ForStatement", AST_For, "init>init, test>condition, update>step, body>body");
+        map("ForInStatement", AST_ForIn, "left>init, right>object, body>body");
+        map("DebuggerStatement", AST_Debugger);
+        map("FunctionDeclaration", AST_Defun, "id>name, params@argnames, body%body");
+        map("VariableDeclaration", AST_Var, "declarations@definitions");
+        map("VariableDeclarator", AST_VarDef, "id>name, init>value");
+        map("ThisExpression", AST_This);
+        map("ArrayExpression", AST_Array, "elements@elements");
+        map("FunctionExpression", AST_Function, "id>name, params@argnames, body%body");
+        map("BinaryExpression", AST_Binary, "operator=operator, left>left, right>right");
+        map("AssignmentExpression", AST_Assign, "operator=operator, left>left, right>right");
+        map("LogicalExpression", AST_Binary, "operator=operator, left>left, right>right");
+        map("ConditionalExpression", AST_Conditional, "test>condition, consequent>consequent, alternate>alternative");
+        map("NewExpression", AST_New, "callee>expression, arguments@args");
+        map("CallExpression", AST_Call, "callee>expression, arguments@args");
+        function my_start_token(moznode) {
+            return new AST_Token({
+                file: moznode.loc && moznode.loc.source,
+                line: moznode.loc && moznode.loc.start.line,
+                col: moznode.loc && moznode.loc.start.column,
+                pos: moznode.start,
+                endpos: moznode.start
+            });
+        }
+        function my_end_token(moznode) {
+            return new AST_Token({
+                file: moznode.loc && moznode.loc.source,
+                line: moznode.loc && moznode.loc.end.line,
+                col: moznode.loc && moznode.loc.end.column,
+                pos: moznode.end,
+                endpos: moznode.end
+            });
+        }
+        function map(moztype, mytype, propmap) {
+            var moz_to_me = "function From_Moz_" + moztype + "(M){\n";
+            moz_to_me += "return new mytype({\n" + "start: my_start_token(M),\n" + "end: my_end_token(M)";
+            if (propmap) propmap.split(/\s*,\s*/).forEach(function(prop) {
+                var m = /([a-z0-9$_]+)(=|@|>|%)([a-z0-9$_]+)/i.exec(prop);
+                if (!m) throw new Error("Can't understand property map: " + prop);
+                var moz = "M." + m[1], how = m[2], my = m[3];
+                moz_to_me += ",\n" + my + ": ";
+                if (how == "@") {
+                    moz_to_me += moz + ".map(from_moz)";
+                } else if (how == ">") {
+                    moz_to_me += "from_moz(" + moz + ")";
+                } else if (how == "=") {
+                    moz_to_me += moz;
+                } else if (how == "%") {
+                    moz_to_me += "from_moz(" + moz + ").body";
+                } else throw new Error("Can't understand operator in propmap: " + prop);
+            });
+            moz_to_me += "\n})}";
+            moz_to_me = new Function("mytype", "my_start_token", "my_end_token", "from_moz", "return(" + moz_to_me + ")")(mytype, my_start_token, my_end_token, from_moz);
+            return MOZ_TO_ME[moztype] = moz_to_me;
+        }
+        var FROM_MOZ_STACK = null;
+        function from_moz(node) {
+            FROM_MOZ_STACK.push(node);
+            var ret = node != null ? MOZ_TO_ME[node.type](node) : null;
+            FROM_MOZ_STACK.pop();
+            return ret;
+        }
+        AST_Node.from_mozilla_ast = function(node) {
+            var save_stack = FROM_MOZ_STACK;
+            FROM_MOZ_STACK = [];
+            var ast = from_moz(node);
+            FROM_MOZ_STACK = save_stack;
+            return ast;
+        };
+    })();
+    exports["array_to_hash"] = array_to_hash;
+    exports["slice"] = slice;
+    exports["characters"] = characters;
+    exports["member"] = member;
+    exports["find_if"] = find_if;
+    exports["repeat_string"] = repeat_string;
+    exports["DefaultsError"] = DefaultsError;
+    exports["defaults"] = defaults;
+    exports["merge"] = merge;
+    exports["noop"] = noop;
+    exports["MAP"] = MAP;
+    exports["push_uniq"] = push_uniq;
+    exports["string_template"] = string_template;
+    exports["remove"] = remove;
+    exports["mergeSort"] = mergeSort;
+    exports["set_difference"] = set_difference;
+    exports["set_intersection"] = set_intersection;
+    exports["makePredicate"] = makePredicate;
+    exports["all"] = all;
+    exports["Dictionary"] = Dictionary;
+    exports["DEFNODE"] = DEFNODE;
+    exports["AST_Token"] = AST_Token;
+    exports["AST_Node"] = AST_Node;
+    exports["AST_Statement"] = AST_Statement;
+    exports["AST_Debugger"] = AST_Debugger;
+    exports["AST_Directive"] = AST_Directive;
+    exports["AST_SimpleStatement"] = AST_SimpleStatement;
+    exports["walk_body"] = walk_body;
+    exports["AST_Block"] = AST_Block;
+    exports["AST_BlockStatement"] = AST_BlockStatement;
+    exports["AST_EmptyStatement"] = AST_EmptyStatement;
+    exports["AST_StatementWithBody"] = AST_StatementWithBody;
+    exports["AST_LabeledStatement"] = AST_LabeledStatement;
+    exports["AST_DWLoop"] = AST_DWLoop;
+    exports["AST_Do"] = AST_Do;
+    exports["AST_While"] = AST_While;
+    exports["AST_For"] = AST_For;
+    exports["AST_ForIn"] = AST_ForIn;
+    exports["AST_With"] = AST_With;
+    exports["AST_Scope"] = AST_Scope;
+    exports["AST_Toplevel"] = AST_Toplevel;
+    exports["AST_Lambda"] = AST_Lambda;
+    exports["AST_Accessor"] = AST_Accessor;
+    exports["AST_Function"] = AST_Function;
+    exports["AST_Defun"] = AST_Defun;
+    exports["AST_Jump"] = AST_Jump;
+    exports["AST_Exit"] = AST_Exit;
+    exports["AST_Return"] = AST_Return;
+    exports["AST_Throw"] = AST_Throw;
+    exports["AST_LoopControl"] = AST_LoopControl;
+    exports["AST_Break"] = AST_Break;
+    exports["AST_Continue"] = AST_Continue;
+    exports["AST_If"] = AST_If;
+    exports["AST_Switch"] = AST_Switch;
+    exports["AST_SwitchBranch"] = AST_SwitchBranch;
+    exports["AST_Default"] = AST_Default;
+    exports["AST_Case"] = AST_Case;
+    exports["AST_Try"] = AST_Try;
+    exports["AST_Catch"] = AST_Catch;
+    exports["AST_Finally"] = AST_Finally;
+    exports["AST_Definitions"] = AST_Definitions;
+    exports["AST_Var"] = AST_Var;
+    exports["AST_Const"] = AST_Const;
+    exports["AST_VarDef"] = AST_VarDef;
+    exports["AST_Call"] = AST_Call;
+    exports["AST_New"] = AST_New;
+    exports["AST_Seq"] = AST_Seq;
+    exports["AST_PropAccess"] = AST_PropAccess;
+    exports["AST_Dot"] = AST_Dot;
+    exports["AST_Sub"] = AST_Sub;
+    exports["AST_Unary"] = AST_Unary;
+    exports["AST_UnaryPrefix"] = AST_UnaryPrefix;
+    exports["AST_UnaryPostfix"] = AST_UnaryPostfix;
+    exports["AST_Binary"] = AST_Binary;
+    exports["AST_Conditional"] = AST_Conditional;
+    exports["AST_Assign"] = AST_Assign;
+    exports["AST_Array"] = AST_Array;
+    exports["AST_Object"] = AST_Object;
+    exports["AST_ObjectProperty"] = AST_ObjectProperty;
+    exports["AST_ObjectKeyVal"] = AST_ObjectKeyVal;
+    exports["AST_ObjectSetter"] = AST_ObjectSetter;
+    exports["AST_ObjectGetter"] = AST_ObjectGetter;
+    exports["AST_Symbol"] = AST_Symbol;
+    exports["AST_SymbolAccessor"] = AST_SymbolAccessor;
+    exports["AST_SymbolDeclaration"] = AST_SymbolDeclaration;
+    exports["AST_SymbolVar"] = AST_SymbolVar;
+    exports["AST_SymbolConst"] = AST_SymbolConst;
+    exports["AST_SymbolFunarg"] = AST_SymbolFunarg;
+    exports["AST_SymbolDefun"] = AST_SymbolDefun;
+    exports["AST_SymbolLambda"] = AST_SymbolLambda;
+    exports["AST_SymbolCatch"] = AST_SymbolCatch;
+    exports["AST_Label"] = AST_Label;
+    exports["AST_SymbolRef"] = AST_SymbolRef;
+    exports["AST_LabelRef"] = AST_LabelRef;
+    exports["AST_This"] = AST_This;
+    exports["AST_Constant"] = AST_Constant;
+    exports["AST_String"] = AST_String;
+    exports["AST_Number"] = AST_Number;
+    exports["AST_RegExp"] = AST_RegExp;
+    exports["AST_Atom"] = AST_Atom;
+    exports["AST_Null"] = AST_Null;
+    exports["AST_NaN"] = AST_NaN;
+    exports["AST_Undefined"] = AST_Undefined;
+    exports["AST_Hole"] = AST_Hole;
+    exports["AST_Infinity"] = AST_Infinity;
+    exports["AST_Boolean"] = AST_Boolean;
+    exports["AST_False"] = AST_False;
+    exports["AST_True"] = AST_True;
+    exports["TreeWalker"] = TreeWalker;
+    exports["KEYWORDS"] = KEYWORDS;
+    exports["KEYWORDS_ATOM"] = KEYWORDS_ATOM;
+    exports["RESERVED_WORDS"] = RESERVED_WORDS;
+    exports["KEYWORDS_BEFORE_EXPRESSION"] = KEYWORDS_BEFORE_EXPRESSION;
+    exports["OPERATOR_CHARS"] = OPERATOR_CHARS;
+    exports["RE_HEX_NUMBER"] = RE_HEX_NUMBER;
+    exports["RE_OCT_NUMBER"] = RE_OCT_NUMBER;
+    exports["RE_DEC_NUMBER"] = RE_DEC_NUMBER;
+    exports["OPERATORS"] = OPERATORS;
+    exports["WHITESPACE_CHARS"] = WHITESPACE_CHARS;
+    exports["PUNC_BEFORE_EXPRESSION"] = PUNC_BEFORE_EXPRESSION;
+    exports["PUNC_CHARS"] = PUNC_CHARS;
+    exports["REGEXP_MODIFIERS"] = REGEXP_MODIFIERS;
+    exports["UNICODE"] = UNICODE;
+    exports["is_letter"] = is_letter;
+    exports["is_digit"] = is_digit;
+    exports["is_alphanumeric_char"] = is_alphanumeric_char;
+    exports["is_unicode_combining_mark"] = is_unicode_combining_mark;
+    exports["is_unicode_connector_punctuation"] = is_unicode_connector_punctuation;
+    exports["is_identifier"] = is_identifier;
+    exports["is_identifier_start"] = is_identifier_start;
+    exports["is_identifier_char"] = is_identifier_char;
+    exports["is_identifier_string"] = is_identifier_string;
+    exports["parse_js_number"] = parse_js_number;
+    exports["JS_Parse_Error"] = JS_Parse_Error;
+    exports["js_error"] = js_error;
+    exports["is_token"] = is_token;
+    exports["EX_EOF"] = EX_EOF;
+    exports["tokenizer"] = tokenizer;
+    exports["UNARY_PREFIX"] = UNARY_PREFIX;
+    exports["UNARY_POSTFIX"] = UNARY_POSTFIX;
+    exports["ASSIGNMENT"] = ASSIGNMENT;
+    exports["PRECEDENCE"] = PRECEDENCE;
+    exports["STATEMENTS_WITH_LABELS"] = STATEMENTS_WITH_LABELS;
+    exports["ATOMIC_START_TOKEN"] = ATOMIC_START_TOKEN;
+    exports["parse"] = parse;
+    exports["TreeTransformer"] = TreeTransformer;
+    exports["SymbolDef"] = SymbolDef;
+    exports["base54"] = base54;
+    exports["OutputStream"] = OutputStream;
+    exports["Compressor"] = Compressor;
+    exports["SourceMap"] = SourceMap;
+})({}, function() {
+    return exports;
+}());
+
+var UglifyJS = exports.UglifyJS;
+
+UglifyJS.AST_Node.warn_function = function(txt) {
+    logger.error("uglifyjs2 WARN: " + txt);
+};
+
+//JRB: MODIFIED FROM UGLIFY SOURCE
+//to take a name for the file, and then set toplevel.filename to be that name.
+exports.minify = function(files, options, name) {
+    options = UglifyJS.defaults(options, {
+        outSourceMap : null,
+        sourceRoot   : null,
+        inSourceMap  : null,
+        fromString   : false,
+        warnings     : false,
+        mangle       : {},
+        output       : null,
+        compress     : {}
+    });
+    if (typeof files == "string")
+        files = [ files ];
+
+    UglifyJS.base54.reset();
+
+    // 1. parse
+    var toplevel = null;
+    files.forEach(function(file){
+        var code = options.fromString
+            ? file
+            : rjsFile.readFile(file, "utf8");
+        toplevel = UglifyJS.parse(code, {
+            filename: options.fromString ? name : file,
+            toplevel: toplevel
+        });
+    });
+
+    // 2. compress
+    if (options.compress) {
+        var compress = { warnings: options.warnings };
+        UglifyJS.merge(compress, options.compress);
+        toplevel.figure_out_scope();
+        var sq = UglifyJS.Compressor(compress);
+        toplevel = toplevel.transform(sq);
+    }
+
+    // 3. mangle
+    if (options.mangle) {
+        toplevel.figure_out_scope();
+        toplevel.compute_char_frequency();
+        toplevel.mangle_names(options.mangle);
+    }
+
+    // 4. output
+    var inMap = options.inSourceMap;
+    var output = {};
+    if (typeof options.inSourceMap == "string") {
+        inMap = rjsFile.readFile(options.inSourceMap, "utf8");
+    }
+    if (options.outSourceMap) {
+        output.source_map = UglifyJS.SourceMap({
+            file: options.outSourceMap,
+            orig: inMap,
+            root: options.sourceRoot
+        });
+    }
+    if (options.output) {
+        UglifyJS.merge(output, options.output);
+    }
+    var stream = UglifyJS.OutputStream(output);
+    toplevel.print(stream);
+    return {
+        code : stream + "",
+        map  : output.source_map + ""
+    };
+};
+
+// exports.describe_ast = function() {
+//     function doitem(ctor) {
+//         var sub = {};
+//         ctor.SUBCLASSES.forEach(function(ctor){
+//             sub[ctor.TYPE] = doitem(ctor);
+//         });
+//         var ret = {};
+//         if (ctor.SELF_PROPS.length > 0) ret.props = ctor.SELF_PROPS;
+//         if (ctor.SUBCLASSES.length > 0) ret.sub = sub;
+//         return ret;
+//     }
+//     return doitem(UglifyJS.AST_Node).sub;
+// }
+
+exports.describe_ast = function() {
+    var out = UglifyJS.OutputStream({ beautify: true });
+    function doitem(ctor) {
+        out.print("AST_" + ctor.TYPE);
+        var props = ctor.SELF_PROPS.filter(function(prop){
+            return !/^\$/.test(prop);
+        });
+        if (props.length > 0) {
+            out.space();
+            out.with_parens(function(){
+                props.forEach(function(prop, i){
+                    if (i) out.space();
+                    out.print(prop);
+                });
+            });
+        }
+        if (ctor.documentation) {
+            out.space();
+            out.print_string(ctor.documentation);
+        }
+        if (ctor.SUBCLASSES.length > 0) {
+            out.space();
+            out.with_block(function(){
+                ctor.SUBCLASSES.forEach(function(ctor, i){
+                    out.indent();
+                    doitem(ctor);
+                    out.newline();
+                });
+            });
+        }
+    };
+    doitem(UglifyJS.AST_Node);
+    return out + "";
+};
+
+});
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint plusplus: true */
+/*global define: false */
+
+define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) {
+    'use strict';
+
+    function arrayToString(ary) {
+        var output = '[';
+        if (ary) {
+            ary.forEach(function (item, i) {
+                output += (i > 0 ? ',' : '') + '"' + lang.jsEscape(item) + '"';
+            });
+        }
+        output += ']';
+
+        return output;
+    }
+
+    //This string is saved off because JSLint complains
+    //about obj.arguments use, as 'reserved word'
+    var argPropName = 'arguments';
+
+    //From an esprima example for traversing its ast.
+    function traverse(object, visitor) {
+        var key, child;
+
+        if (!object) {
+            return;
+        }
+
+        if (visitor.call(null, object) === false) {
+            return false;
+        }
+        for (key in object) {
+            if (object.hasOwnProperty(key)) {
+                child = object[key];
+                if (typeof child === 'object' && child !== null) {
+                    if (traverse(child, visitor) === false) {
+                        return false;
+                    }
+                }
+            }
+        }
+    }
+
+    //Like traverse, but visitor returning false just
+    //stops that subtree analysis, not the rest of tree
+    //visiting.
+    function traverseBroad(object, visitor) {
+        var key, child;
+
+        if (!object) {
+            return;
+        }
+
+        if (visitor.call(null, object) === false) {
+            return false;
+        }
+        for (key in object) {
+            if (object.hasOwnProperty(key)) {
+                child = object[key];
+                if (typeof child === 'object' && child !== null) {
+                    traverse(child, visitor);
+                }
+            }
+        }
+    }
+
+    /**
+     * Pulls out dependencies from an array literal with just string members.
+     * If string literals, will just return those string values in an array,
+     * skipping other items in the array.
+     *
+     * @param {Node} node an AST node.
+     *
+     * @returns {Array} an array of strings.
+     * If null is returned, then it means the input node was not a valid
+     * dependency.
+     */
+    function getValidDeps(node) {
+        if (!node || node.type !== 'ArrayExpression' || !node.elements) {
+            return;
+        }
+
+        var deps = [];
+
+        node.elements.some(function (elem) {
+            if (elem.type === 'Literal') {
+                deps.push(elem.value);
+            }
+        });
+
+        return deps.length ? deps : undefined;
+    }
+
+    /**
+     * Main parse function. Returns a string of any valid require or
+     * define/require.def calls as part of one JavaScript source string.
+     * @param {String} moduleName the module name that represents this file.
+     * It is used to create a default define if there is not one already for the
+     * file. This allows properly tracing dependencies for builds. Otherwise, if
+     * the file just has a require() call, the file dependencies will not be
+     * properly reflected: the file will come before its dependencies.
+     * @param {String} moduleName
+     * @param {String} fileName
+     * @param {String} fileContents
+     * @param {Object} options optional options. insertNeedsDefine: true will
+     * add calls to require.needsDefine() if appropriate.
+     * @returns {String} JS source string or null, if no require or
+     * define/require.def calls are found.
+     */
+    function parse(moduleName, fileName, fileContents, options) {
+        options = options || {};
+
+        //Set up source input
+        var i, moduleCall, depString,
+            moduleDeps = [],
+            result = '',
+            moduleList = [],
+            needsDefine = true,
+            astRoot = esprima.parse(fileContents);
+
+        parse.recurse(astRoot, function (callName, config, name, deps) {
+            if (!deps) {
+                deps = [];
+            }
+
+            if (callName === 'define' && (!name || name === moduleName)) {
+                needsDefine = false;
+            }
+
+            if (!name) {
+                //If there is no module name, the dependencies are for
+                //this file/default module name.
+                moduleDeps = moduleDeps.concat(deps);
+            } else {
+                moduleList.push({
+                    name: name,
+                    deps: deps
+                });
+            }
+
+            //If define was found, no need to dive deeper, unless
+            //the config explicitly wants to dig deeper.
+            return !!options.findNestedDependencies;
+        }, options);
+
+        if (options.insertNeedsDefine && needsDefine) {
+            result += 'require.needsDefine("' + moduleName + '");';
+        }
+
+        if (moduleDeps.length || moduleList.length) {
+            for (i = 0; i < moduleList.length; i++) {
+                moduleCall = moduleList[i];
+                if (result) {
+                    result += '\n';
+                }
+
+                //If this is the main module for this file, combine any
+                //"anonymous" dependencies (could come from a nested require
+                //call) with this module.
+                if (moduleCall.name === moduleName) {
+                    moduleCall.deps = moduleCall.deps.concat(moduleDeps);
+                    moduleDeps = [];
+                }
+
+                depString = arrayToString(moduleCall.deps);
+                result += 'define("' + moduleCall.name + '",' +
+                          depString + ');';
+            }
+            if (moduleDeps.length) {
+                if (result) {
+                    result += '\n';
+                }
+                depString = arrayToString(moduleDeps);
+                result += 'define("' + moduleName + '",' + depString + ');';
+            }
+        }
+
+        return result || null;
+    }
+
+    parse.traverse = traverse;
+    parse.traverseBroad = traverseBroad;
+
+    /**
+     * Handles parsing a file recursively for require calls.
+     * @param {Array} parentNode the AST node to start with.
+     * @param {Function} onMatch function to call on a parse match.
+     * @param {Object} [options] This is normally the build config options if
+     * it is passed.
+     */
+    parse.recurse = function (object, onMatch, options) {
+        //Like traverse, but skips if branches that would not be processed
+        //after has application that results in tests of true or false boolean
+        //literal values.
+        var key, child,
+            hasHas = options && options.has;
+
+        if (!object) {
+            return;
+        }
+
+        //If has replacement has resulted in if(true){} or if(false){}, take
+        //the appropriate branch and skip the other one.
+        if (hasHas && object.type === 'IfStatement' && object.test.type &&
+                object.test.type === 'Literal') {
+            if (object.test.value) {
+                //Take the if branch
+                this.recurse(object.consequent, onMatch, options);
+            } else {
+                //Take the else branch
+                this.recurse(object.alternate, onMatch, options);
+            }
+        } else {
+            if (this.parseNode(object, onMatch) === false) {
+                return;
+            }
+            for (key in object) {
+                if (object.hasOwnProperty(key)) {
+                    child = object[key];
+                    if (typeof child === 'object' && child !== null) {
+                        this.recurse(child, onMatch, options);
+                    }
+                }
+            }
+        }
+    };
+
+    /**
+     * Determines if the file defines the require/define module API.
+     * Specifically, it looks for the `define.amd = ` expression.
+     * @param {String} fileName
+     * @param {String} fileContents
+     * @returns {Boolean}
+     */
+    parse.definesRequire = function (fileName, fileContents) {
+        var found = false;
+
+        traverse(esprima.parse(fileContents), function (node) {
+            if (parse.hasDefineAmd(node)) {
+                found = true;
+
+                //Stop traversal
+                return false;
+            }
+        });
+
+        return found;
+    };
+
+    /**
+     * Finds require("") calls inside a CommonJS anonymous module wrapped in a
+     * define(function(require, exports, module){}) wrapper. These dependencies
+     * will be added to a modified define() call that lists the dependencies
+     * on the outside of the function.
+     * @param {String} fileName
+     * @param {String|Object} fileContents: a string of contents, or an already
+     * parsed AST tree.
+     * @returns {Array} an array of module names that are dependencies. Always
+     * returns an array, but could be of length zero.
+     */
+    parse.getAnonDeps = function (fileName, fileContents) {
+        var astRoot = typeof fileContents === 'string' ?
+                      esprima.parse(fileContents) : fileContents,
+            defFunc = this.findAnonDefineFactory(astRoot);
+
+        return parse.getAnonDepsFromNode(defFunc);
+    };
+
+    /**
+     * Finds require("") calls inside a CommonJS anonymous module wrapped
+     * in a define function, given an AST node for the definition function.
+     * @param {Node} node the AST node for the definition function.
+     * @returns {Array} and array of dependency names. Can be of zero length.
+     */
+    parse.getAnonDepsFromNode = function (node) {
+        var deps = [],
+            funcArgLength;
+
+        if (node) {
+            this.findRequireDepNames(node, deps);
+
+            //If no deps, still add the standard CommonJS require, exports,
+            //module, in that order, to the deps, but only if specified as
+            //function args. In particular, if exports is used, it is favored
+            //over the return value of the function, so only add it if asked.
+            funcArgLength = node.params && node.params.length;
+            if (funcArgLength) {
+                deps = (funcArgLength > 1 ? ["require", "exports", "module"] :
+                        ["require"]).concat(deps);
+            }
+        }
+        return deps;
+    };
+
+    parse.isDefineNodeWithArgs = function (node) {
+        return node && node.type === 'CallExpression' &&
+               node.callee && node.callee.type === 'Identifier' &&
+               node.callee.name === 'define' && node[argPropName];
+    };
+
+    /**
+     * Finds the function in define(function (require, exports, module){});
+     * @param {Array} node
+     * @returns {Boolean}
+     */
+    parse.findAnonDefineFactory = function (node) {
+        var match;
+
+        traverse(node, function (node) {
+            var arg0, arg1;
+
+            if (parse.isDefineNodeWithArgs(node)) {
+
+                //Just the factory function passed to define
+                arg0 = node[argPropName][0];
+                if (arg0 && arg0.type === 'FunctionExpression') {
+                    match = arg0;
+                    return false;
+                }
+
+                //A string literal module ID followed by the factory function.
+                arg1 = node[argPropName][1];
+                if (arg0.type === 'Literal' &&
+                        arg1 && arg1.type === 'FunctionExpression') {
+                    match = arg1;
+                    return false;
+                }
+            }
+        });
+
+        return match;
+    };
+
+    /**
+     * Finds any config that is passed to requirejs. That includes calls to
+     * require/requirejs.config(), as well as require({}, ...) and
+     * requirejs({}, ...)
+     * @param {String} fileContents
+     *
+     * @returns {Object} a config details object with the following properties:
+     * - config: {Object} the config object found. Can be undefined if no
+     * config found.
+     * - range: {Array} the start index and end index in the contents where
+     * the config was found. Can be undefined if no config found.
+     * Can throw an error if the config in the file cannot be evaluated in
+     * a build context to valid JavaScript.
+     */
+    parse.findConfig = function (fileContents) {
+        /*jslint evil: true */
+        var jsConfig, foundConfig, stringData, foundRange, quote, quoteMatch,
+            quoteRegExp = /(:\s|\[\s*)(['"])/,
+            astRoot = esprima.parse(fileContents, {
+                loc: true
+            });
+
+        traverse(astRoot, function (node) {
+            var arg,
+                requireType = parse.hasRequire(node);
+
+            if (requireType && (requireType === 'require' ||
+                    requireType === 'requirejs' ||
+                    requireType === 'requireConfig' ||
+                    requireType === 'requirejsConfig')) {
+
+                arg = node[argPropName] && node[argPropName][0];
+
+                if (arg && arg.type === 'ObjectExpression') {
+                    stringData = parse.nodeToString(fileContents, arg);
+                    jsConfig = stringData.value;
+                    foundRange = stringData.range;
+                    return false;
+                }
+            } else {
+                arg = parse.getRequireObjectLiteral(node);
+                if (arg) {
+                    stringData = parse.nodeToString(fileContents, arg);
+                    jsConfig = stringData.value;
+                    foundRange = stringData.range;
+                    return false;
+                }
+            }
+        });
+
+        if (jsConfig) {
+            // Eval the config
+            quoteMatch = quoteRegExp.exec(jsConfig);
+            quote = (quoteMatch && quoteMatch[2]) || '"';
+            foundConfig = eval('(' + jsConfig + ')');
+        }
+
+        return {
+            config: foundConfig,
+            range: foundRange,
+            quote: quote
+        };
+    };
+
+    /** Returns the node for the object literal assigned to require/requirejs,
+     * for holding a declarative config.
+     */
+    parse.getRequireObjectLiteral = function (node) {
+        if (node.id && node.id.type === 'Identifier' &&
+                (node.id.name === 'require' || node.id.name === 'requirejs') &&
+                node.init && node.init.type === 'ObjectExpression') {
+            return node.init;
+        }
+    };
+
+    /**
+     * Renames require/requirejs/define calls to be ns + '.' + require/requirejs/define
+     * Does *not* do .config calls though. See pragma.namespace for the complete
+     * set of namespace transforms. This function is used because require calls
+     * inside a define() call should not be renamed, so a simple regexp is not
+     * good enough.
+     * @param  {String} fileContents the contents to transform.
+     * @param  {String} ns the namespace, *not* including trailing dot.
+     * @return {String} the fileContents with the namespace applied
+     */
+    parse.renameNamespace = function (fileContents, ns) {
+        var lines,
+            locs = [],
+            astRoot = esprima.parse(fileContents, {
+                loc: true
+            });
+
+        parse.recurse(astRoot, function (callName, config, name, deps, node) {
+            locs.push(node.loc);
+            //Do not recurse into define functions, they should be using
+            //local defines.
+            return callName !== 'define';
+        }, {});
+
+        if (locs.length) {
+            lines = fileContents.split('\n');
+
+            //Go backwards through the found locs, adding in the namespace name
+            //in front.
+            locs.reverse();
+            locs.forEach(function (loc) {
+                var startIndex = loc.start.column,
+                //start.line is 1-based, not 0 based.
+                lineIndex = loc.start.line - 1,
+                line = lines[lineIndex];
+
+                lines[lineIndex] = line.substring(0, startIndex) +
+                                   ns + '.' +
+                                   line.substring(startIndex,
+                                                      line.length);
+            });
+
+            fileContents = lines.join('\n');
+        }
+
+        return fileContents;
+    };
+
+    /**
+     * Finds all dependencies specified in dependency arrays and inside
+     * simplified commonjs wrappers.
+     * @param {String} fileName
+     * @param {String} fileContents
+     *
+     * @returns {Array} an array of dependency strings. The dependencies
+     * have not been normalized, they may be relative IDs.
+     */
+    parse.findDependencies = function (fileName, fileContents, options) {
+        var dependencies = [],
+            astRoot = esprima.parse(fileContents);
+
+        parse.recurse(astRoot, function (callName, config, name, deps) {
+            if (deps) {
+                dependencies = dependencies.concat(deps);
+            }
+        }, options);
+
+        return dependencies;
+    };
+
+    /**
+     * Finds only CJS dependencies, ones that are the form
+     * require('stringLiteral')
+     */
+    parse.findCjsDependencies = function (fileName, fileContents) {
+        var dependencies = [];
+
+        traverse(esprima.parse(fileContents), function (node) {
+            var arg;
+
+            if (node && node.type === 'CallExpression' && node.callee &&
+                    node.callee.type === 'Identifier' &&
+                    node.callee.name === 'require' && node[argPropName] &&
+                    node[argPropName].length === 1) {
+                arg = node[argPropName][0];
+                if (arg.type === 'Literal') {
+                    dependencies.push(arg.value);
+                }
+            }
+        });
+
+        return dependencies;
+    };
+
+    //function define() {}
+    parse.hasDefDefine = function (node) {
+        return node.type === 'FunctionDeclaration' && node.id &&
+                    node.id.type === 'Identifier' && node.id.name === 'define';
+    };
+
+    //define.amd = ...
+    parse.hasDefineAmd = function (node) {
+        return node && node.type === 'AssignmentExpression' &&
+            node.left && node.left.type === 'MemberExpression' &&
+            node.left.object && node.left.object.name === 'define' &&
+            node.left.property && node.left.property.name === 'amd';
+    };
+
+    //define.amd reference, as in: if (define.amd)
+    parse.refsDefineAmd = function (node) {
+        return node && node.type === 'MemberExpression' &&
+        node.object && node.object.name === 'define' &&
+        node.object.type === 'Identifier' &&
+        node.property && node.property.name === 'amd' &&
+        node.property.type === 'Identifier';
+    };
+
+    //require(), requirejs(), require.config() and requirejs.config()
+    parse.hasRequire = function (node) {
+        var callName,
+            c = node && node.callee;
+
+        if (node && node.type === 'CallExpression' && c) {
+            if (c.type === 'Identifier' &&
+                    (c.name === 'require' ||
+                    c.name === 'requirejs')) {
+                //A require/requirejs({}, ...) call
+                callName = c.name;
+            } else if (c.type === 'MemberExpression' &&
+                    c.object &&
+                    c.object.type === 'Identifier' &&
+                    (c.object.name === 'require' ||
+                        c.object.name === 'requirejs') &&
+                    c.property && c.property.name === 'config') {
+                // require/requirejs.config({}) call
+                callName = c.object.name + 'Config';
+            }
+        }
+
+        return callName;
+    };
+
+    //define()
+    parse.hasDefine = function (node) {
+        return node && node.type === 'CallExpression' && node.callee &&
+            node.callee.type === 'Identifier' &&
+            node.callee.name === 'define';
+    };
+
+    /**
+     * If there is a named define in the file, returns the name. Does not
+     * scan for mulitple names, just the first one.
+     */
+    parse.getNamedDefine = function (fileContents) {
+        var name;
+        traverse(esprima.parse(fileContents), function (node) {
+            if (node && node.type === 'CallExpression' && node.callee &&
+            node.callee.type === 'Identifier' &&
+            node.callee.name === 'define' &&
+            node[argPropName] && node[argPropName][0] &&
+            node[argPropName][0].type === 'Literal') {
+                name = node[argPropName][0].value;
+                return false;
+            }
+        });
+
+        return name;
+    };
+
+    /**
+     * Determines if define(), require({}|[]) or requirejs was called in the
+     * file. Also finds out if define() is declared and if define.amd is called.
+     */
+    parse.usesAmdOrRequireJs = function (fileName, fileContents) {
+        var uses;
+
+        traverse(esprima.parse(fileContents), function (node) {
+            var type, callName, arg;
+
+            if (parse.hasDefDefine(node)) {
+                //function define() {}
+                type = 'declaresDefine';
+            } else if (parse.hasDefineAmd(node)) {
+                type = 'defineAmd';
+            } else {
+                callName = parse.hasRequire(node);
+                if (callName) {
+                    arg = node[argPropName] && node[argPropName][0];
+                    if (arg && (arg.type === 'ObjectExpression' ||
+                            arg.type === 'ArrayExpression')) {
+                        type = callName;
+                    }
+                } else if (parse.hasDefine(node)) {
+                    type = 'define';
+                }
+            }
+
+            if (type) {
+                if (!uses) {
+                    uses = {};
+                }
+                uses[type] = true;
+            }
+        });
+
+        return uses;
+    };
+
+    /**
+     * Determines if require(''), exports.x =, module.exports =,
+     * __dirname, __filename are used. So, not strictly traditional CommonJS,
+     * also checks for Node variants.
+     */
+    parse.usesCommonJs = function (fileName, fileContents) {
+        var uses = null,
+            assignsExports = false;
+
+
+        traverse(esprima.parse(fileContents), function (node) {
+            var type,
+                exp = node.expression || node.init;
+
+            if (node.type === 'Identifier' &&
+                    (node.name === '__dirname' || node.name === '__filename')) {
+                type = node.name.substring(2);
+            } else if (node.type === 'VariableDeclarator' && node.id &&
+                    node.id.type === 'Identifier' &&
+                        node.id.name === 'exports') {
+                //Hmm, a variable assignment for exports, so does not use cjs
+                //exports.
+                type = 'varExports';
+            } else if (exp && exp.type === 'AssignmentExpression' && exp.left &&
+                    exp.left.type === 'MemberExpression' && exp.left.object) {
+                if (exp.left.object.name === 'module' && exp.left.property &&
+                        exp.left.property.name === 'exports') {
+                    type = 'moduleExports';
+                } else if (exp.left.object.name === 'exports' &&
+                        exp.left.property) {
+                    type = 'exports';
+                }
+
+            } else if (node && node.type === 'CallExpression' && node.callee &&
+                    node.callee.type === 'Identifier' &&
+                    node.callee.name === 'require' && node[argPropName] &&
+                    node[argPropName].length === 1 &&
+                    node[argPropName][0].type === 'Literal') {
+                type = 'require';
+            }
+
+            if (type) {
+                if (type === 'varExports') {
+                    assignsExports = true;
+                } else if (type !== 'exports' || !assignsExports) {
+                    if (!uses) {
+                        uses = {};
+                    }
+                    uses[type] = true;
+                }
+            }
+        });
+
+        return uses;
+    };
+
+
+    parse.findRequireDepNames = function (node, deps) {
+        traverse(node, function (node) {
+            var arg;
+
+            if (node && node.type === 'CallExpression' && node.callee &&
+                    node.callee.type === 'Identifier' &&
+                    node.callee.name === 'require' &&
+                    node[argPropName] && node[argPropName].length === 1) {
+
+                arg = node[argPropName][0];
+                if (arg.type === 'Literal') {
+                    deps.push(arg.value);
+                }
+            }
+        });
+    };
+
+    /**
+     * Determines if a specific node is a valid require or define/require.def
+     * call.
+     * @param {Array} node
+     * @param {Function} onMatch a function to call when a match is found.
+     * It is passed the match name, and the config, name, deps possible args.
+     * The config, name and deps args are not normalized.
+     *
+     * @returns {String} a JS source string with the valid require/define call.
+     * Otherwise null.
+     */
+    parse.parseNode = function (node, onMatch) {
+        var name, deps, cjsDeps, arg, factory, exp, refsDefine, bodyNode,
+            args = node && node[argPropName],
+            callName = parse.hasRequire(node);
+
+        if (callName === 'require' || callName === 'requirejs') {
+            //A plain require/requirejs call
+            arg = node[argPropName] && node[argPropName][0];
+            if (arg.type !== 'ArrayExpression') {
+                if (arg.type === 'ObjectExpression') {
+                    //A config call, try the second arg.
+                    arg = node[argPropName][1];
+                }
+            }
+
+            deps = getValidDeps(arg);
+            if (!deps) {
+                return;
+            }
+
+            return onMatch("require", null, null, deps, node);
+        } else if (parse.hasDefine(node) && args && args.length) {
+            name = args[0];
+            deps = args[1];
+            factory = args[2];
+
+            if (name.type === 'ArrayExpression') {
+                //No name, adjust args
+                factory = deps;
+                deps = name;
+                name = null;
+            } else if (name.type === 'FunctionExpression') {
+                //Just the factory, no name or deps
+                factory = name;
+                name = deps = null;
+            } else if (name.type !== 'Literal') {
+                 //An object literal, just null out
+                name = deps = factory = null;
+            }
+
+            if (name && name.type === 'Literal' && deps) {
+                if (deps.type === 'FunctionExpression') {
+                    //deps is the factory
+                    factory = deps;
+                    deps = null;
+                } else if (deps.type === 'ObjectExpression') {
+                    //deps is object literal, null out
+                    deps = factory = null;
+                } else if (deps.type === 'Identifier' && args.length === 2) {
+                    // define('id', factory)
+                    deps = factory = null;
+                }
+            }
+
+            if (deps && deps.type === 'ArrayExpression') {
+                deps = getValidDeps(deps);
+            } else if (factory && factory.type === 'FunctionExpression') {
+                //If no deps and a factory function, could be a commonjs sugar
+                //wrapper, scan the function for dependencies.
+                cjsDeps = parse.getAnonDepsFromNode(factory);
+                if (cjsDeps.length) {
+                    deps = cjsDeps;
+                }
+            } else if (deps || factory) {
+                //Does not match the shape of an AMD call.
+                return;
+            }
+
+            //Just save off the name as a string instead of an AST object.
+            if (name && name.type === 'Literal') {
+                name = name.value;
+            }
+
+            return onMatch("define", null, name, deps, node);
+        } else if (node.type === 'CallExpression' && node.callee &&
+                   node.callee.type === 'FunctionExpression' &&
+                   node.callee.body && node.callee.body.body &&
+                   node.callee.body.body.length === 1 &&
+                   node.callee.body.body[0].type === 'IfStatement') {
+            bodyNode = node.callee.body.body[0];
+            //Look for a define(Identifier) case, but only if inside an
+            //if that has a define.amd test
+            if (bodyNode.consequent && bodyNode.consequent.body) {
+                exp = bodyNode.consequent.body[0];
+                if (exp.type === 'ExpressionStatement' && exp.expression &&
+                    parse.hasDefine(exp.expression) &&
+                    exp.expression.arguments &&
+                    exp.expression.arguments.length === 1 &&
+                    exp.expression.arguments[0].type === 'Identifier') {
+
+                    //Calls define(Identifier) as first statement in body.
+                    //Confirm the if test references define.amd
+                    traverse(bodyNode.test, function (node) {
+                        if (parse.refsDefineAmd(node)) {
+                            refsDefine = true;
+                            return false;
+                        }
+                    });
+
+                    if (refsDefine) {
+                        return onMatch("define", null, null, null, exp.expression);
+                    }
+                }
+            }
+        }
+    };
+
+    /**
+     * Converts an AST node into a JS source string by extracting
+     * the node's location from the given contents string. Assumes
+     * esprima.parse() with loc was done.
+     * @param {String} contents
+     * @param {Object} node
+     * @returns {String} a JS source string.
+     */
+    parse.nodeToString = function (contents, node) {
+        var extracted,
+            loc = node.loc,
+            lines = contents.split('\n'),
+            firstLine = loc.start.line > 1 ?
+                        lines.slice(0, loc.start.line - 1).join('\n') + '\n' :
+                        '',
+            preamble = firstLine +
+                       lines[loc.start.line - 1].substring(0, loc.start.column);
+
+        if (loc.start.line === loc.end.line) {
+            extracted = lines[loc.start.line - 1].substring(loc.start.column,
+                                                            loc.end.column);
+        } else {
+            extracted =  lines[loc.start.line - 1].substring(loc.start.column) +
+                     '\n' +
+                     lines.slice(loc.start.line, loc.end.line - 1).join('\n') +
+                     '\n' +
+                     lines[loc.end.line - 1].substring(0, loc.end.column);
+        }
+
+        return {
+            value: extracted,
+            range: [
+                preamble.length,
+                preamble.length + extracted.length
+            ]
+        };
+    };
+
+    /**
+     * Extracts license comments from JS text.
+     * @param {String} fileName
+     * @param {String} contents
+     * @returns {String} a string of license comments.
+     */
+    parse.getLicenseComments = function (fileName, contents) {
+        var commentNode, refNode, subNode, value, i, j,
+            //xpconnect's Reflect does not support comment or range, but
+            //prefer continued operation vs strict parity of operation,
+            //as license comments can be expressed in other ways, like
+            //via wrap args, or linked via sourcemaps.
+            ast = esprima.parse(contents, {
+                comment: true,
+                range: true
+            }),
+            result = '',
+            existsMap = {},
+            lineEnd = contents.indexOf('\r') === -1 ? '\n' : '\r\n';
+
+        if (ast.comments) {
+            for (i = 0; i < ast.comments.length; i++) {
+                commentNode = ast.comments[i];
+
+                if (commentNode.type === 'Line') {
+                    value = '//' + commentNode.value + lineEnd;
+                    refNode = commentNode;
+
+                    if (i + 1 >= ast.comments.length) {
+                        value += lineEnd;
+                    } else {
+                        //Look for immediately adjacent single line comments
+                        //since it could from a multiple line comment made out
+                        //of single line comments. Like this comment.
+                        for (j = i + 1; j < ast.comments.length; j++) {
+                            subNode = ast.comments[j];
+                            if (subNode.type === 'Line' &&
+                                    subNode.range[0] === refNode.range[1] + 1) {
+                                //Adjacent single line comment. Collect it.
+                                value += '//' + subNode.value + lineEnd;
+                                refNode = subNode;
+                            } else {
+                                //No more single line comment blocks. Break out
+                                //and continue outer looping.
+                                break;
+                            }
+                        }
+                        value += lineEnd;
+                        i = j - 1;
+                    }
+                } else {
+                    value = '/*' + commentNode.value + '*/' + lineEnd + lineEnd;
+                }
+
+                if (!existsMap[value] && (value.indexOf('license') !== -1 ||
+                        (commentNode.type === 'Block' &&
+                            value.indexOf('/*!') === 0) ||
+                        value.indexOf('opyright') !== -1 ||
+                        value.indexOf('(c)') !== -1)) {
+
+                    result += value;
+                    existsMap[value] = true;
+                }
+
+            }
+        }
+
+        return result;
+    };
+
+    return parse;
+});
+/**
+ * @license Copyright (c) 2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*global define */
+
+define('transform', [ './esprimaAdapter', './parse', 'logger', 'lang'],
+function (esprima, parse, logger, lang) {
+    'use strict';
+    var transform,
+        baseIndentRegExp = /^([ \t]+)/,
+        indentRegExp = /\{[\r\n]+([ \t]+)/,
+        keyRegExp = /^[_A-Za-z]([A-Za-z\d_]*)$/,
+        bulkIndentRegExps = {
+            '\n': /\n/g,
+            '\r\n': /\r\n/g
+        };
+
+    function applyIndent(str, indent, lineReturn) {
+        var regExp = bulkIndentRegExps[lineReturn];
+        return str.replace(regExp, '$&' + indent);
+    }
+
+    transform = {
+        toTransport: function (namespace, moduleName, path, contents, onFound, options) {
+            options = options || {};
+
+            var astRoot, contentLines, modLine,
+                foundAnon,
+                scanCount = 0,
+                scanReset = false,
+                defineInfos = [];
+
+            try {
+                astRoot = esprima.parse(contents, {
+                    loc: true
+                });
+            } catch (e) {
+                logger.trace('toTransport skipping ' + path + ': ' +
+                             e.toString());
+                return contents;
+            }
+
+            //Find the define calls and their position in the files.
+            parse.traverseBroad(astRoot, function (node) {
+                var args, firstArg, firstArgLoc, factoryNode,
+                    needsId, depAction, foundId,
+                    sourceUrlData, range,
+                    namespaceExists = false;
+
+                namespaceExists = namespace &&
+                                node.type === 'CallExpression' &&
+                                node.callee  && node.callee.object &&
+                                node.callee.object.type === 'Identifier' &&
+                                node.callee.object.name === namespace &&
+                                node.callee.property.type === 'Identifier' &&
+                                node.callee.property.name === 'define';
+
+                if (namespaceExists || parse.isDefineNodeWithArgs(node)) {
+                    //The arguments are where its at.
+                    args = node.arguments;
+                    if (!args || !args.length) {
+                        return;
+                    }
+
+                    firstArg = args[0];
+                    firstArgLoc = firstArg.loc;
+
+                    if (args.length === 1) {
+                        if (firstArg.type === 'Identifier') {
+                            //The define(factory) case, but
+                            //only allow it if one Identifier arg,
+                            //to limit impact of false positives.
+                            needsId = true;
+                            depAction = 'empty';
+                        } else if (firstArg.type === 'FunctionExpression') {
+                            //define(function(){})
+                            factoryNode = firstArg;
+                            needsId = true;
+                            depAction = 'scan';
+                        } else if (firstArg.type === 'ObjectExpression') {
+                            //define({});
+                            needsId = true;
+                            depAction = 'skip';
+                        } else if (firstArg.type === 'Literal' &&
+                                   typeof firstArg.value === 'number') {
+                            //define('12345');
+                            needsId = true;
+                            depAction = 'skip';
+                        } else if (firstArg.type === 'UnaryExpression' &&
+                                   firstArg.operator === '-' &&
+                                   firstArg.argument &&
+                                   firstArg.argument.type === 'Literal' &&
+                                   typeof firstArg.argument.value === 'number') {
+                            //define('-12345');
+                            needsId = true;
+                            depAction = 'skip';
+                        } else if (firstArg.type === 'MemberExpression' &&
+                                   firstArg.object &&
+                                   firstArg.property &&
+                                   firstArg.property.type === 'Identifier') {
+                            //define(this.key);
+                            needsId = true;
+                            depAction = 'empty';
+                        }
+                    } else if (firstArg.type === 'ArrayExpression') {
+                        //define([], ...);
+                        needsId = true;
+                        depAction = 'skip';
+                    } else if (firstArg.type === 'Literal' &&
+                               typeof firstArg.value === 'string') {
+                        //define('string', ....)
+                        //Already has an ID.
+                        needsId = false;
+                        if (args.length === 2 &&
+                            args[1].type === 'FunctionExpression') {
+                            //Needs dependency scanning.
+                            factoryNode = args[1];
+                            depAction = 'scan';
+                        } else {
+                            depAction = 'skip';
+                        }
+                    } else {
+                        //Unknown define entity, keep looking, even
+                        //in the subtree for this node.
+                        return;
+                    }
+
+                    range = {
+                        foundId: foundId,
+                        needsId: needsId,
+                        depAction: depAction,
+                        namespaceExists: namespaceExists,
+                        node: node,
+                        defineLoc: node.loc,
+                        firstArgLoc: firstArgLoc,
+                        factoryNode: factoryNode,
+                        sourceUrlData: sourceUrlData
+                    };
+
+                    //Only transform ones that do not have IDs. If it has an
+                    //ID but no dependency array, assume it is something like
+                    //a phonegap implementation, that has its own internal
+                    //define that cannot handle dependency array constructs,
+                    //and if it is a named module, then it means it has been
+                    //set for transport form.
+                    if (range.needsId) {
+                        if (foundAnon) {
+                            logger.trace(path + ' has more than one anonymous ' +
+                                'define. May be a built file from another ' +
+                                'build system like, Ender. Skipping normalization.');
+                            defineInfos = [];
+                            return false;
+                        } else {
+                            foundAnon = range;
+                            defineInfos.push(range);
+                        }
+                    } else if (depAction === 'scan') {
+                        scanCount += 1;
+                        if (scanCount > 1) {
+                            //Just go back to an array that just has the
+                            //anon one, since this is an already optimized
+                            //file like the phonegap one.
+                            if (!scanReset) {
+                                defineInfos =  foundAnon ? [foundAnon] : [];
+                                scanReset = true;
+                            }
+                        } else {
+                            defineInfos.push(range);
+                        }
+                    }
+                }
+            });
+
+            if (!defineInfos.length) {
+                return contents;
+            }
+
+            //Reverse the matches, need to start from the bottom of
+            //the file to modify it, so that the ranges are still true
+            //further up.
+            defineInfos.reverse();
+
+            contentLines = contents.split('\n');
+
+            modLine = function (loc, contentInsertion) {
+                var startIndex = loc.start.column,
+                //start.line is 1-based, not 0 based.
+                lineIndex = loc.start.line - 1,
+                line = contentLines[lineIndex];
+                contentLines[lineIndex] = line.substring(0, startIndex) +
+                                           contentInsertion +
+                                           line.substring(startIndex,
+                                                              line.length);
+            };
+
+            defineInfos.forEach(function (info) {
+                var deps,
+                    contentInsertion = '',
+                    depString = '';
+
+                //Do the modifications "backwards", in other words, start with the
+                //one that is farthest down and work up, so that the ranges in the
+                //defineInfos still apply. So that means deps, id, then namespace.
+                if (info.needsId && moduleName) {
+                    contentInsertion += "'" + moduleName + "',";
+                }
+
+                if (info.depAction === 'scan') {
+                    deps = parse.getAnonDepsFromNode(info.factoryNode);
+
+                    if (deps.length) {
+                        depString = '[' + deps.map(function (dep) {
+                            return "'" + dep + "'";
+                        }) + ']';
+                    } else {
+                        depString = '[]';
+                    }
+                    depString +=  ',';
+
+                    if (info.factoryNode) {
+                        //Already have a named module, need to insert the
+                        //dependencies after the name.
+                        modLine(info.factoryNode.loc, depString);
+                    } else {
+                        contentInsertion += depString;
+                    }
+                }
+
+                if (contentInsertion) {
+                    modLine(info.firstArgLoc, contentInsertion);
+                }
+
+                //Do namespace last so that ui does not mess upthe parenRange
+                //used above.
+                if (namespace && !info.namespaceExists) {
+                    modLine(info.defineLoc, namespace + '.');
+                }
+
+                //Notify any listener for the found info
+                if (onFound) {
+                    onFound(info);
+                }
+            });
+
+            contents = contentLines.join('\n');
+
+            if (options.useSourceUrl) {
+                contents = 'eval("' + lang.jsEscape(contents) +
+                    '\\n//# sourceURL=' + (path.indexOf('/') === 0 ? '' : '/') +
+                    path +
+                    '");\n';
+            }
+
+            return contents;
+        },
+
+        /**
+         * Modify the contents of a require.config/requirejs.config call. This
+         * call will LOSE any existing comments that are in the config string.
+         *
+         * @param  {String} fileContents String that may contain a config call
+         * @param  {Function} onConfig Function called when the first config
+         * call is found. It will be passed an Object which is the current
+         * config, and the onConfig function should return an Object to use
+         * as the config.
+         * @return {String} the fileContents with the config changes applied.
+         */
+        modifyConfig: function (fileContents, onConfig) {
+            var details = parse.findConfig(fileContents),
+                config = details.config;
+
+            if (config) {
+                config = onConfig(config);
+                if (config) {
+                    return transform.serializeConfig(config,
+                                              fileContents,
+                                              details.range[0],
+                                              details.range[1],
+                                              {
+                                                quote: details.quote
+                                              });
+                }
+            }
+
+            return fileContents;
+        },
+
+        serializeConfig: function (config, fileContents, start, end, options) {
+            //Calculate base level of indent
+            var indent, match, configString, outDentRegExp,
+                baseIndent = '',
+                startString = fileContents.substring(0, start),
+                existingConfigString = fileContents.substring(start, end),
+                lineReturn = existingConfigString.indexOf('\r') === -1 ? '\n' : '\r\n',
+                lastReturnIndex = startString.lastIndexOf('\n');
+
+            //Get the basic amount of indent for the require config call.
+            if (lastReturnIndex === -1) {
+                lastReturnIndex = 0;
+            }
+
+            match = baseIndentRegExp.exec(startString.substring(lastReturnIndex + 1, start));
+            if (match && match[1]) {
+                baseIndent = match[1];
+            }
+
+            //Calculate internal indentation for config
+            match = indentRegExp.exec(existingConfigString);
+            if (match && match[1]) {
+                indent = match[1];
+            }
+
+            if (!indent || indent.length < baseIndent) {
+                indent = '  ';
+            } else {
+                indent = indent.substring(baseIndent.length);
+            }
+
+            outDentRegExp = new RegExp('(' + lineReturn + ')' + indent, 'g');
+
+            configString = transform.objectToString(config, {
+                                                    indent: indent,
+                                                    lineReturn: lineReturn,
+                                                    outDentRegExp: outDentRegExp,
+                                                    quote: options && options.quote
+                                                });
+
+            //Add in the base indenting level.
+            configString = applyIndent(configString, baseIndent, lineReturn);
+
+            return startString + configString + fileContents.substring(end);
+        },
+
+        /**
+         * Tries converting a JS object to a string. This will likely suck, and
+         * is tailored to the type of config expected in a loader config call.
+         * So, hasOwnProperty fields, strings, numbers, arrays and functions,
+         * no weird recursively referenced stuff.
+         * @param  {Object} obj        the object to convert
+         * @param  {Object} options    options object with the following values:
+         *         {String} indent     the indentation to use for each level
+         *         {String} lineReturn the type of line return to use
+         *         {outDentRegExp} outDentRegExp the regexp to use to outdent functions
+         *         {String} quote      the quote type to use, ' or ". Optional. Default is "
+         * @param  {String} totalIndent the total indent to print for this level
+         * @return {String}            a string representation of the object.
+         */
+        objectToString: function (obj, options, totalIndent) {
+            var startBrace, endBrace, nextIndent,
+                first = true,
+                value = '',
+                lineReturn = options.lineReturn,
+                indent = options.indent,
+                outDentRegExp = options.outDentRegExp,
+                quote = options.quote || '"';
+
+            totalIndent = totalIndent || '';
+            nextIndent = totalIndent + indent;
+
+            if (obj === null) {
+                value = 'null';
+            } else if (obj === undefined) {
+                value = 'undefined';
+            } else if (typeof obj === 'number' || typeof obj === 'boolean') {
+                value = obj;
+            } else if (typeof obj === 'string') {
+                //Use double quotes in case the config may also work as JSON.
+                value = quote + lang.jsEscape(obj) + quote;
+            } else if (lang.isArray(obj)) {
+                lang.each(obj, function (item, i) {
+                    value += (i !== 0 ? ',' + lineReturn : '' ) +
+                        nextIndent +
+                        transform.objectToString(item,
+                                                 options,
+                                                 nextIndent);
+                });
+
+                startBrace = '[';
+                endBrace = ']';
+            } else if (lang.isFunction(obj) || lang.isRegExp(obj)) {
+                //The outdent regexp just helps pretty up the conversion
+                //just in node. Rhino strips comments and does a different
+                //indent scheme for Function toString, so not really helpful
+                //there.
+                value = obj.toString().replace(outDentRegExp, '$1');
+            } else {
+                //An object
+                lang.eachProp(obj, function (v, prop) {
+                    value += (first ? '': ',' + lineReturn) +
+                        nextIndent +
+                        (keyRegExp.test(prop) ? prop : quote + lang.jsEscape(prop) + quote )+
+                        ': ' +
+                        transform.objectToString(v,
+                                                 options,
+                                                 nextIndent);
+                    first = false;
+                });
+                startBrace = '{';
+                endBrace = '}';
+            }
+
+            if (startBrace) {
+                value = startBrace +
+                        lineReturn +
+                        value +
+                        lineReturn + totalIndent +
+                        endBrace;
+            }
+
+            return value;
+        }
+    };
+
+    return transform;
+});
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint regexp: true, plusplus: true  */
+/*global define: false */
+
+define('pragma', ['parse', 'logger'], function (parse, logger) {
+    'use strict';
+    function Temp() {}
+
+    function create(obj, mixin) {
+        Temp.prototype = obj;
+        var temp = new Temp(), prop;
+
+        //Avoid any extra memory hanging around
+        Temp.prototype = null;
+
+        if (mixin) {
+            for (prop in mixin) {
+                if (mixin.hasOwnProperty(prop) && !temp.hasOwnProperty(prop)) {
+                    temp[prop] = mixin[prop];
+                }
+            }
+        }
+
+        return temp; // Object
+    }
+
+    var pragma = {
+        conditionalRegExp: /(exclude|include)Start\s*\(\s*["'](\w+)["']\s*,(.*)\)/,
+        useStrictRegExp: /['"]use strict['"];/g,
+        hasRegExp: /has\s*\(\s*['"]([^'"]+)['"]\s*\)/g,
+        configRegExp: /(^|[^\.])(requirejs|require)(\.config)\s*\(/g,
+        nsWrapRegExp: /\/\*requirejs namespace: true \*\//,
+        apiDefRegExp: /var requirejs,\s*require,\s*define;/,
+        defineCheckRegExp: /typeof\s+define\s*===\s*["']function["']\s*&&\s*define\s*\.\s*amd/g,
+        defineStringCheckRegExp: /typeof\s+define\s*===\s*["']function["']\s*&&\s*define\s*\[\s*["']amd["']\s*\]/g,
+        defineTypeFirstCheckRegExp: /\s*["']function["']\s*==(=?)\s*typeof\s+define\s*&&\s*define\s*\.\s*amd/g,
+        defineJQueryRegExp: /typeof\s+define\s*===\s*["']function["']\s*&&\s*define\s*\.\s*amd\s*&&\s*define\s*\.\s*amd\s*\.\s*jQuery/g,
+        defineHasRegExp: /typeof\s+define\s*==(=)?\s*['"]function['"]\s*&&\s*typeof\s+define\.amd\s*==(=)?\s*['"]object['"]\s*&&\s*define\.amd/g,
+        defineTernaryRegExp: /typeof\s+define\s*===\s*['"]function["']\s*&&\s*define\s*\.\s*amd\s*\?\s*define/,
+        amdefineRegExp: /if\s*\(\s*typeof define\s*\!==\s*'function'\s*\)\s*\{\s*[^\{\}]+amdefine[^\{\}]+\}/g,
+
+        removeStrict: function (contents, config) {
+            return config.useStrict ? contents : contents.replace(pragma.useStrictRegExp, '');
+        },
+
+        namespace: function (fileContents, ns, onLifecycleName) {
+            if (ns) {
+                //Namespace require/define calls
+                fileContents = fileContents.replace(pragma.configRegExp, '$1' + ns + '.$2$3(');
+
+
+                fileContents = parse.renameNamespace(fileContents, ns);
+
+                //Namespace define ternary use:
+                fileContents = fileContents.replace(pragma.defineTernaryRegExp,
+                                                    "typeof " + ns + ".define === 'function' && " + ns + ".define.amd ? " + ns + ".define");
+
+                //Namespace define jquery use:
+                fileContents = fileContents.replace(pragma.defineJQueryRegExp,
+                                                    "typeof " + ns + ".define === 'function' && " + ns + ".define.amd && " + ns + ".define.amd.jQuery");
+
+                //Namespace has.js define use:
+                fileContents = fileContents.replace(pragma.defineHasRegExp,
+                                                    "typeof " + ns + ".define === 'function' && typeof " + ns + ".define.amd === 'object' && " + ns + ".define.amd");
+
+                //Namespace define checks.
+                //Do these ones last, since they are a subset of the more specific
+                //checks above.
+                fileContents = fileContents.replace(pragma.defineCheckRegExp,
+                                                    "typeof " + ns + ".define === 'function' && " + ns + ".define.amd");
+                fileContents = fileContents.replace(pragma.defineStringCheckRegExp,
+                                                    "typeof " + ns + ".define === 'function' && " + ns + ".define['amd']");
+                fileContents = fileContents.replace(pragma.defineTypeFirstCheckRegExp,
+                                                    "'function' === typeof " + ns + ".define && " + ns + ".define.amd");
+
+                //Check for require.js with the require/define definitions
+                if (pragma.apiDefRegExp.test(fileContents) &&
+                    fileContents.indexOf("if (!" + ns + " || !" + ns + ".requirejs)") === -1) {
+                    //Wrap the file contents in a typeof check, and a function
+                    //to contain the API globals.
+                    fileContents = "var " + ns + ";(function () { if (!" + ns + " || !" + ns + ".requirejs) {\n" +
+                                    "if (!" + ns + ") { " + ns + ' = {}; } else { require = ' + ns + '; }\n' +
+                                    fileContents +
+                                    "\n" +
+                                    ns + ".requirejs = requirejs;" +
+                                    ns + ".require = require;" +
+                                    ns + ".define = define;\n" +
+                                    "}\n}());";
+                }
+
+                //Finally, if the file wants a special wrapper because it ties
+                //in to the requirejs internals in a way that would not fit
+                //the above matches, do that. Look for /*requirejs namespace: true*/
+                if (pragma.nsWrapRegExp.test(fileContents)) {
+                    //Remove the pragma.
+                    fileContents = fileContents.replace(pragma.nsWrapRegExp, '');
+
+                    //Alter the contents.
+                    fileContents = '(function () {\n' +
+                                   'var require = ' + ns + '.require,' +
+                                   'requirejs = ' + ns + '.requirejs,' +
+                                   'define = ' + ns + '.define;\n' +
+                                   fileContents +
+                                   '\n}());';
+                }
+            }
+
+            return fileContents;
+        },
+
+        /**
+         * processes the fileContents for some //>> conditional statements
+         */
+        process: function (fileName, fileContents, config, onLifecycleName, pluginCollector) {
+            /*jslint evil: true */
+            var foundIndex = -1, startIndex = 0, lineEndIndex, conditionLine,
+                matches, type, marker, condition, isTrue, endRegExp, endMatches,
+                endMarkerIndex, shouldInclude, startLength, lifecycleHas, deps,
+                i, dep, moduleName, collectorMod,
+                lifecyclePragmas, pragmas = config.pragmas, hasConfig = config.has,
+                //Legacy arg defined to help in dojo conversion script. Remove later
+                //when dojo no longer needs conversion:
+                kwArgs = pragmas;
+
+            //Mix in a specific lifecycle scoped object, to allow targeting
+            //some pragmas/has tests to only when files are saved, or at different
+            //lifecycle events. Do not bother with kwArgs in this section, since
+            //the old dojo kwArgs were for all points in the build lifecycle.
+            if (onLifecycleName) {
+                lifecyclePragmas = config['pragmas' + onLifecycleName];
+                lifecycleHas = config['has' + onLifecycleName];
+
+                if (lifecyclePragmas) {
+                    pragmas = create(pragmas || {}, lifecyclePragmas);
+                }
+
+                if (lifecycleHas) {
+                    hasConfig = create(hasConfig || {}, lifecycleHas);
+                }
+            }
+
+            //Replace has references if desired
+            if (hasConfig) {
+                fileContents = fileContents.replace(pragma.hasRegExp, function (match, test) {
+                    if (hasConfig.hasOwnProperty(test)) {
+                        return !!hasConfig[test];
+                    }
+                    return match;
+                });
+            }
+
+            if (!config.skipPragmas) {
+
+                while ((foundIndex = fileContents.indexOf("//>>", startIndex)) !== -1) {
+                    //Found a conditional. Get the conditional line.
+                    lineEndIndex = fileContents.indexOf("\n", foundIndex);
+                    if (lineEndIndex === -1) {
+                        lineEndIndex = fileContents.length - 1;
+                    }
+
+                    //Increment startIndex past the line so the next conditional search can be done.
+                    startIndex = lineEndIndex + 1;
+
+                    //Break apart the conditional.
+                    conditionLine = fileContents.substring(foundIndex, lineEndIndex + 1);
+                    matches = conditionLine.match(pragma.conditionalRegExp);
+                    if (matches) {
+                        type = matches[1];
+                        marker = matches[2];
+                        condition = matches[3];
+                        isTrue = false;
+                        //See if the condition is true.
+                        try {
+                            isTrue = !!eval("(" + condition + ")");
+                        } catch (e) {
+                            throw "Error in file: " +
+                                   fileName +
+                                   ". Conditional comment: " +
+                                   conditionLine +
+                                   " failed with this error: " + e;
+                        }
+
+                        //Find the endpoint marker.
+                        endRegExp = new RegExp('\\/\\/\\>\\>\\s*' + type + 'End\\(\\s*[\'"]' + marker + '[\'"]\\s*\\)', "g");
+                        endMatches = endRegExp.exec(fileContents.substring(startIndex, fileContents.length));
+                        if (endMatches) {
+                            endMarkerIndex = startIndex + endRegExp.lastIndex - endMatches[0].length;
+
+                            //Find the next line return based on the match position.
+                            lineEndIndex = fileContents.indexOf("\n", endMarkerIndex);
+                            if (lineEndIndex === -1) {
+                                lineEndIndex = fileContents.length - 1;
+                            }
+
+                            //Should we include the segment?
+                            shouldInclude = ((type === "exclude" && !isTrue) || (type === "include" && isTrue));
+
+                            //Remove the conditional comments, and optionally remove the content inside
+                            //the conditional comments.
+                            startLength = startIndex - foundIndex;
+                            fileContents = fileContents.substring(0, foundIndex) +
+                                (shouldInclude ? fileContents.substring(startIndex, endMarkerIndex) : "") +
+                                fileContents.substring(lineEndIndex + 1, fileContents.length);
+
+                            //Move startIndex to foundIndex, since that is the new position in the file
+                            //where we need to look for more conditionals in the next while loop pass.
+                            startIndex = foundIndex;
+                        } else {
+                            throw "Error in file: " +
+                                  fileName +
+                                  ". Cannot find end marker for conditional comment: " +
+                                  conditionLine;
+
+                        }
+                    }
+                }
+            }
+
+            //If need to find all plugin resources to optimize, do that now,
+            //before namespacing, since the namespacing will change the API
+            //names.
+            //If there is a plugin collector, scan the file for plugin resources.
+            if (config.optimizeAllPluginResources && pluginCollector) {
+                try {
+                    deps = parse.findDependencies(fileName, fileContents);
+                    if (deps.length) {
+                        for (i = 0; i < deps.length; i++) {
+                            dep = deps[i];
+                            if (dep.indexOf('!') !== -1) {
+                                moduleName = dep.split('!')[0];
+                                collectorMod = pluginCollector[moduleName];
+                                if (!collectorMod) {
+                                 collectorMod = pluginCollector[moduleName] = [];
+                                }
+                                collectorMod.push(dep);
+                            }
+                        }
+                    }
+                } catch (eDep) {
+                    logger.error('Parse error looking for plugin resources in ' +
+                                 fileName + ', skipping.');
+                }
+            }
+
+            //Strip amdefine use for node-shared modules.
+            fileContents = fileContents.replace(pragma.amdefineRegExp, '');
+
+            //Do namespacing
+            if (onLifecycleName === 'OnSave' && config.namespace) {
+                fileContents = pragma.namespace(fileContents, config.namespace, onLifecycleName);
+            }
+
+
+            return pragma.removeStrict(fileContents, config);
+        }
+    };
+
+    return pragma;
+});
+if(env === 'browser') {
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false */
+
+define('browser/optimize', {});
+
+}
+
+if(env === 'node') {
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint strict: false */
+/*global define: false */
+
+define('node/optimize', {});
+
+}
+
+if(env === 'rhino') {
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint sloppy: true, plusplus: true */
+/*global define, java, Packages, com */
+
+define('rhino/optimize', ['logger', 'env!env/file'], function (logger, file) {
+
+    //Add .reduce to Rhino so UglifyJS can run in Rhino,
+    //inspired by https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/reduce
+    //but rewritten for brevity, and to be good enough for use by UglifyJS.
+    if (!Array.prototype.reduce) {
+        Array.prototype.reduce = function (fn /*, initialValue */) {
+            var i = 0,
+                length = this.length,
+                accumulator;
+
+            if (arguments.length >= 2) {
+                accumulator = arguments[1];
+            } else {
+                if (length) {
+                    while (!(i in this)) {
+                        i++;
+                    }
+                    accumulator = this[i++];
+                }
+            }
+
+            for (; i < length; i++) {
+                if (i in this) {
+                    accumulator = fn.call(undefined, accumulator, this[i], i, this);
+                }
+            }
+
+            return accumulator;
+        };
+    }
+
+    var JSSourceFilefromCode, optimize,
+        mapRegExp = /"file":"[^"]+"/;
+
+    //Bind to Closure compiler, but if it is not available, do not sweat it.
+    try {
+        JSSourceFilefromCode = java.lang.Class.forName('com.google.javascript.jscomp.JSSourceFile').getMethod('fromCode', [java.lang.String, java.lang.String]);
+    } catch (e) {}
+
+    //Helper for closure compiler, because of weird Java-JavaScript interactions.
+    function closurefromCode(filename, content) {
+        return JSSourceFilefromCode.invoke(null, [filename, content]);
+    }
+
+
+    function getFileWriter(fileName, encoding) {
+        var outFile = new java.io.File(fileName), outWriter, parentDir;
+
+        parentDir = outFile.getAbsoluteFile().getParentFile();
+        if (!parentDir.exists()) {
+            if (!parentDir.mkdirs()) {
+                throw "Could not create directory: " + parentDir.getAbsolutePath();
+            }
+        }
+
+        if (encoding) {
+            outWriter = new java.io.OutputStreamWriter(new java.io.FileOutputStream(outFile), encoding);
+        } else {
+            outWriter = new java.io.OutputStreamWriter(new java.io.FileOutputStream(outFile));
+        }
+
+        return new java.io.BufferedWriter(outWriter);
+    }
+
+    optimize = {
+        closure: function (fileName, fileContents, outFileName, keepLines, config) {
+            config = config || {};
+            var result, mappings, optimized, compressed, baseName, writer,
+                outBaseName, outFileNameMap, outFileNameMapContent,
+                srcOutFileName, concatNameMap,
+                jscomp = Packages.com.google.javascript.jscomp,
+                flags = Packages.com.google.common.flags,
+                //Set up source input
+                jsSourceFile = closurefromCode(String(fileName), String(fileContents)),
+                sourceListArray = new java.util.ArrayList(),
+                options, option, FLAG_compilation_level, compiler,
+                Compiler = Packages.com.google.javascript.jscomp.Compiler,
+                CommandLineRunner = Packages.com.google.javascript.jscomp.CommandLineRunner;
+
+            logger.trace("Minifying file: " + fileName);
+
+            baseName = (new java.io.File(fileName)).getName();
+
+            //Set up options
+            options = new jscomp.CompilerOptions();
+            for (option in config.CompilerOptions) {
+                // options are false by default and jslint wanted an if statement in this for loop
+                if (config.CompilerOptions[option]) {
+                    options[option] = config.CompilerOptions[option];
+                }
+
+            }
+            options.prettyPrint = keepLines || options.prettyPrint;
+
+            FLAG_compilation_level = jscomp.CompilationLevel[config.CompilationLevel || 'SIMPLE_OPTIMIZATIONS'];
+            FLAG_compilation_level.setOptionsForCompilationLevel(options);
+
+            if (config.generateSourceMaps) {
+                mappings = new java.util.ArrayList();
+
+                mappings.add(new com.google.javascript.jscomp.SourceMap.LocationMapping(fileName, baseName + ".src.js"));
+                options.setSourceMapLocationMappings(mappings);
+                options.setSourceMapOutputPath(fileName + ".map");
+            }
+
+            //Trigger the compiler
+            Compiler.setLoggingLevel(Packages.java.util.logging.Level[config.loggingLevel || 'WARNING']);
+            compiler = new Compiler();
+
+            //fill the sourceArrrayList; we need the ArrayList because the only overload of compile
+            //accepting the getDefaultExterns return value (a List) also wants the sources as a List
+            sourceListArray.add(jsSourceFile);
+
+            result = compiler.compile(CommandLineRunner.getDefaultExterns(), sourceListArray, options);
+            if (result.success) {
+                optimized = String(compiler.toSource());
+
+                if (config.generateSourceMaps && result.sourceMap && outFileName) {
+                    outBaseName = (new java.io.File(outFileName)).getName();
+
+                    srcOutFileName = outFileName + ".src.js";
+                    outFileNameMap = outFileName + ".map";
+
+                    //If previous .map file exists, move it to the ".src.js"
+                    //location. Need to update the sourceMappingURL part in the
+                    //src.js file too.
+                    if (file.exists(outFileNameMap)) {
+                        concatNameMap = outFileNameMap.replace(/\.map$/, '.src.js.map');
+                        file.saveFile(concatNameMap, file.readFile(outFileNameMap));
+                        file.saveFile(srcOutFileName,
+                                      fileContents.replace(/\/\# sourceMappingURL=(.+).map/,
+                                                           '/# sourceMappingURL=$1.src.js.map'));
+                    } else {
+                        file.saveUtf8File(srcOutFileName, fileContents);
+                    }
+
+                    writer = getFileWriter(outFileNameMap, "utf-8");
+                    result.sourceMap.appendTo(writer, outFileName);
+                    writer.close();
+
+                    //Not sure how better to do this, but right now the .map file
+                    //leaks the full OS path in the "file" property. Manually
+                    //modify it to not do that.
+                    file.saveFile(outFileNameMap,
+                        file.readFile(outFileNameMap).replace(mapRegExp, '"file":"' + baseName + '"'));
+
+                    fileContents = optimized + "\n//# sourceMappingURL=" + outBaseName + ".map";
+                } else {
+                    fileContents = optimized;
+                }
+                return fileContents;
+            } else {
+                throw new Error('Cannot closure compile file: ' + fileName + '. Skipping it.');
+            }
+
+            return fileContents;
+        }
+    };
+
+    return optimize;
+});
+}
+
+if(env === 'xpconnect') {
+define('xpconnect/optimize', {});
+}
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint plusplus: true, nomen: true, regexp: true */
+/*global define: false */
+
+define('optimize', [ 'lang', 'logger', 'env!env/optimize', 'env!env/file', 'parse',
+         'pragma', 'uglifyjs/index', 'uglifyjs2',
+         'source-map'],
+function (lang,   logger,   envOptimize,        file,           parse,
+          pragma, uglify,             uglify2,
+          sourceMap) {
+    'use strict';
+
+    var optimize,
+        cssImportRegExp = /\@import\s+(url\()?\s*([^);]+)\s*(\))?([\w, ]*)(;)?/ig,
+        cssCommentImportRegExp = /\/\*[^\*]*@import[^\*]*\*\//g,
+        cssUrlRegExp = /\url\(\s*([^\)]+)\s*\)?/g,
+        SourceMapGenerator = sourceMap.SourceMapGenerator,
+        SourceMapConsumer =sourceMap.SourceMapConsumer;
+
+    /**
+     * If an URL from a CSS url value contains start/end quotes, remove them.
+     * This is not done in the regexp, since my regexp fu is not that strong,
+     * and the CSS spec allows for ' and " in the URL if they are backslash escaped.
+     * @param {String} url
+     */
+    function cleanCssUrlQuotes(url) {
+        //Make sure we are not ending in whitespace.
+        //Not very confident of the css regexps above that there will not be ending
+        //whitespace.
+        url = url.replace(/\s+$/, "");
+
+        if (url.charAt(0) === "'" || url.charAt(0) === "\"") {
+            url = url.substring(1, url.length - 1);
+        }
+
+        return url;
+    }
+
+    function fixCssUrlPaths(fileName, path, contents, cssPrefix) {
+        return contents.replace(cssUrlRegExp, function (fullMatch, urlMatch) {
+            var colonIndex, parts, i,
+                fixedUrlMatch = cleanCssUrlQuotes(urlMatch);
+
+            fixedUrlMatch = fixedUrlMatch.replace(lang.backSlashRegExp, "/");
+
+            //Only do the work for relative URLs. Skip things that start with / or have
+            //a protocol.
+            colonIndex = fixedUrlMatch.indexOf(":");
+            if (fixedUrlMatch.charAt(0) !== "/" && (colonIndex === -1 || colonIndex > fixedUrlMatch.indexOf("/"))) {
+                //It is a relative URL, tack on the cssPrefix and path prefix
+                urlMatch = cssPrefix + path + fixedUrlMatch;
+
+            } else {
+                logger.trace(fileName + "\n  URL not a relative URL, skipping: " + urlMatch);
+            }
+
+            //Collapse .. and .
+            parts = urlMatch.split("/");
+            for (i = parts.length - 1; i > 0; i--) {
+                if (parts[i] === ".") {
+                    parts.splice(i, 1);
+                } else if (parts[i] === "..") {
+                    if (i !== 0 && parts[i - 1] !== "..") {
+                        parts.splice(i - 1, 2);
+                        i -= 1;
+                    }
+                }
+            }
+
+            return "url(" + parts.join("/") + ")";
+        });
+    }
+
+    /**
+     * Inlines nested stylesheets that have @import calls in them.
+     * @param {String} fileName the file name
+     * @param {String} fileContents the file contents
+     * @param {String} cssImportIgnore comma delimited string of files to ignore
+     * @param {String} cssPrefix string to be prefixed before relative URLs
+     * @param {Object} included an object used to track the files already imported
+     */
+    function flattenCss(fileName, fileContents, cssImportIgnore, cssPrefix, included, topLevel) {
+        //Find the last slash in the name.
+        fileName = fileName.replace(lang.backSlashRegExp, "/");
+        var endIndex = fileName.lastIndexOf("/"),
+            //Make a file path based on the last slash.
+            //If no slash, so must be just a file name. Use empty string then.
+            filePath = (endIndex !== -1) ? fileName.substring(0, endIndex + 1) : "",
+            //store a list of merged files
+            importList = [],
+            skippedList = [];
+
+        //First make a pass by removing any commented out @import calls.
+        fileContents = fileContents.replace(cssCommentImportRegExp, '');
+
+        //Make sure we have a delimited ignore list to make matching faster
+        if (cssImportIgnore && cssImportIgnore.charAt(cssImportIgnore.length - 1) !== ",") {
+            cssImportIgnore += ",";
+        }
+
+        fileContents = fileContents.replace(cssImportRegExp, function (fullMatch, urlStart, importFileName, urlEnd, mediaTypes) {
+            //Only process media type "all" or empty media type rules.
+            if (mediaTypes && ((mediaTypes.replace(/^\s\s*/, '').replace(/\s\s*$/, '')) !== "all")) {
+                skippedList.push(fileName);
+                return fullMatch;
+            }
+
+            importFileName = cleanCssUrlQuotes(importFileName);
+
+            //Ignore the file import if it is part of an ignore list.
+            if (cssImportIgnore && cssImportIgnore.indexOf(importFileName + ",") !== -1) {
+                return fullMatch;
+            }
+
+            //Make sure we have a unix path for the rest of the operation.
+            importFileName = importFileName.replace(lang.backSlashRegExp, "/");
+
+            try {
+                //if a relative path, then tack on the filePath.
+                //If it is not a relative path, then the readFile below will fail,
+                //and we will just skip that import.
+                var fullImportFileName = importFileName.charAt(0) === "/" ? importFileName : filePath + importFileName,
+                    importContents = file.readFile(fullImportFileName),
+                    importEndIndex, importPath, flat;
+
+                //Skip the file if it has already been included.
+                if (included[fullImportFileName]) {
+                    return '';
+                }
+                included[fullImportFileName] = true;
+
+                //Make sure to flatten any nested imports.
+                flat = flattenCss(fullImportFileName, importContents, cssImportIgnore, cssPrefix, included);
+                importContents = flat.fileContents;
+
+                if (flat.importList.length) {
+                    importList.push.apply(importList, flat.importList);
+                }
+                if (flat.skippedList.length) {
+                    skippedList.push.apply(skippedList, flat.skippedList);
+                }
+
+                //Make the full import path
+                importEndIndex = importFileName.lastIndexOf("/");
+
+                //Make a file path based on the last slash.
+                //If no slash, so must be just a file name. Use empty string then.
+                importPath = (importEndIndex !== -1) ? importFileName.substring(0, importEndIndex + 1) : "";
+
+                //fix url() on relative import (#5)
+                importPath = importPath.replace(/^\.\//, '');
+
+                //Modify URL paths to match the path represented by this file.
+                importContents = fixCssUrlPaths(importFileName, importPath, importContents, cssPrefix);
+
+                importList.push(fullImportFileName);
+                return importContents;
+            } catch (e) {
+                logger.warn(fileName + "\n  Cannot inline css import, skipping: " + importFileName);
+                return fullMatch;
+            }
+        });
+
+        if (cssPrefix && topLevel) {
+            //Modify URL paths to match the path represented by this file.
+            fileContents = fixCssUrlPaths(fileName, '', fileContents, cssPrefix);
+        }
+
+        return {
+            importList : importList,
+            skippedList: skippedList,
+            fileContents : fileContents
+        };
+    }
+
+    optimize = {
+        /**
+         * Optimizes a file that contains JavaScript content. Optionally collects
+         * plugin resources mentioned in a file, and then passes the content
+         * through an minifier if one is specified via config.optimize.
+         *
+         * @param {String} fileName the name of the file to optimize
+         * @param {String} fileContents the contents to optimize. If this is
+         * a null value, then fileName will be used to read the fileContents.
+         * @param {String} outFileName the name of the file to use for the
+         * saved optimized content.
+         * @param {Object} config the build config object.
+         * @param {Array} [pluginCollector] storage for any plugin resources
+         * found.
+         */
+        jsFile: function (fileName, fileContents, outFileName, config, pluginCollector) {
+            if (!fileContents) {
+                fileContents = file.readFile(fileName);
+            }
+
+            fileContents = optimize.js(fileName, fileContents, outFileName, config, pluginCollector);
+
+            file.saveUtf8File(outFileName, fileContents);
+        },
+
+        /**
+         * Optimizes a file that contains JavaScript content. Optionally collects
+         * plugin resources mentioned in a file, and then passes the content
+         * through an minifier if one is specified via config.optimize.
+         *
+         * @param {String} fileName the name of the file that matches the
+         * fileContents.
+         * @param {String} fileContents the string of JS to optimize.
+         * @param {Object} [config] the build config object.
+         * @param {Array} [pluginCollector] storage for any plugin resources
+         * found.
+         */
+        js: function (fileName, fileContents, outFileName, config, pluginCollector) {
+            var optFunc, optConfig,
+                parts = (String(config.optimize)).split('.'),
+                optimizerName = parts[0],
+                keepLines = parts[1] === 'keepLines',
+                licenseContents = '';
+
+            config = config || {};
+
+            //Apply pragmas/namespace renaming
+            fileContents = pragma.process(fileName, fileContents, config, 'OnSave', pluginCollector);
+
+            //Optimize the JS files if asked.
+            if (optimizerName && optimizerName !== 'none') {
+                optFunc = envOptimize[optimizerName] || optimize.optimizers[optimizerName];
+                if (!optFunc) {
+                    throw new Error('optimizer with name of "' +
+                                    optimizerName +
+                                    '" not found for this environment');
+                }
+
+                optConfig = config[optimizerName] || {};
+                if (config.generateSourceMaps) {
+                    optConfig.generateSourceMaps = !!config.generateSourceMaps;
+                }
+
+                try {
+                    if (config.preserveLicenseComments) {
+                        //Pull out any license comments for prepending after optimization.
+                        try {
+                            licenseContents = parse.getLicenseComments(fileName, fileContents);
+                        } catch (e) {
+                            throw new Error('Cannot parse file: ' + fileName + ' for comments. Skipping it. Error is:\n' + e.toString());
+                        }
+                    }
+
+                    fileContents = licenseContents + optFunc(fileName,
+                                                             fileContents,
+                                                             outFileName,
+                                                             keepLines,
+                                                             optConfig);
+                } catch (e) {
+                    if (config.throwWhen && config.throwWhen.optimize) {
+                        throw e;
+                    } else {
+                        logger.error(e);
+                    }
+                }
+            }
+
+            return fileContents;
+        },
+
+        /**
+         * Optimizes one CSS file, inlining @import calls, stripping comments, and
+         * optionally removes line returns.
+         * @param {String} fileName the path to the CSS file to optimize
+         * @param {String} outFileName the path to save the optimized file.
+         * @param {Object} config the config object with the optimizeCss and
+         * cssImportIgnore options.
+         */
+        cssFile: function (fileName, outFileName, config) {
+
+            //Read in the file. Make sure we have a JS string.
+            var originalFileContents = file.readFile(fileName),
+                flat = flattenCss(fileName, originalFileContents, config.cssImportIgnore, config.cssPrefix, {}, true),
+                //Do not use the flattened CSS if there was one that was skipped.
+                fileContents = flat.skippedList.length ? originalFileContents : flat.fileContents,
+                startIndex, endIndex, buildText, comment;
+
+            if (flat.skippedList.length) {
+                logger.warn('Cannot inline @imports for ' + fileName +
+                            ',\nthe following files had media queries in them:\n' +
+                            flat.skippedList.join('\n'));
+            }
+
+            //Do comment removal.
+            try {
+                if (config.optimizeCss.indexOf(".keepComments") === -1) {
+                    startIndex = 0;
+                    //Get rid of comments.
+                    while ((startIndex = fileContents.indexOf("/*", startIndex)) !== -1) {
+                        endIndex = fileContents.indexOf("*/", startIndex + 2);
+                        if (endIndex === -1) {
+                            throw "Improper comment in CSS file: " + fileName;
+                        }
+                        comment = fileContents.substring(startIndex, endIndex);
+
+                        if (config.preserveLicenseComments &&
+                            (comment.indexOf('license') !== -1 ||
+                             comment.indexOf('opyright') !== -1 ||
+                             comment.indexOf('(c)') !== -1)) {
+                            //Keep the comment, just increment the startIndex
+                            startIndex = endIndex;
+                        } else {
+                            fileContents = fileContents.substring(0, startIndex) + fileContents.substring(endIndex + 2, fileContents.length);
+                            startIndex = 0;
+                        }
+                    }
+                }
+                //Get rid of newlines.
+                if (config.optimizeCss.indexOf(".keepLines") === -1) {
+                    fileContents = fileContents.replace(/[\r\n]/g, " ");
+                    fileContents = fileContents.replace(/\s+/g, " ");
+                    fileContents = fileContents.replace(/\{\s/g, "{");
+                    fileContents = fileContents.replace(/\s\}/g, "}");
+                } else {
+                    //Remove multiple empty lines.
+                    fileContents = fileContents.replace(/(\r\n)+/g, "\r\n");
+                    fileContents = fileContents.replace(/(\n)+/g, "\n");
+                }
+            } catch (e) {
+                fileContents = originalFileContents;
+                logger.error("Could not optimized CSS file: " + fileName + ", error: " + e);
+            }
+
+            file.saveUtf8File(outFileName, fileContents);
+
+            //text output to stdout and/or written to build.txt file
+            buildText = "\n"+ outFileName.replace(config.dir, "") +"\n----------------\n";
+            flat.importList.push(fileName);
+            buildText += flat.importList.map(function(path){
+                return path.replace(config.dir, "");
+            }).join("\n");
+
+            return {
+                importList: flat.importList,
+                buildText: buildText +"\n"
+            };
+        },
+
+        /**
+         * Optimizes CSS files, inlining @import calls, stripping comments, and
+         * optionally removes line returns.
+         * @param {String} startDir the path to the top level directory
+         * @param {Object} config the config object with the optimizeCss and
+         * cssImportIgnore options.
+         */
+        css: function (startDir, config) {
+            var buildText = "",
+                importList = [],
+                shouldRemove = config.dir && config.removeCombined,
+                i, fileName, result, fileList;
+            if (config.optimizeCss.indexOf("standard") !== -1) {
+                fileList = file.getFilteredFileList(startDir, /\.css$/, true);
+                if (fileList) {
+                    for (i = 0; i < fileList.length; i++) {
+                        fileName = fileList[i];
+                        logger.trace("Optimizing (" + config.optimizeCss + ") CSS file: " + fileName);
+                        result = optimize.cssFile(fileName, fileName, config);
+                        buildText += result.buildText;
+                        if (shouldRemove) {
+                            result.importList.pop();
+                            importList = importList.concat(result.importList);
+                        }
+                    }
+                }
+
+                if (shouldRemove) {
+                    importList.forEach(function (path) {
+                        if (file.exists(path)) {
+                            file.deleteFile(path);
+                        }
+                    });
+                }
+            }
+            return buildText;
+        },
+
+        optimizers: {
+            uglify: function (fileName, fileContents, outFileName, keepLines, config) {
+                var parser = uglify.parser,
+                    processor = uglify.uglify,
+                    ast, errMessage, errMatch;
+
+                config = config || {};
+
+                logger.trace("Uglifying file: " + fileName);
+
+                try {
+                    ast = parser.parse(fileContents, config.strict_semicolons);
+                    if (config.no_mangle !== true) {
+                        ast = processor.ast_mangle(ast, config);
+                    }
+                    ast = processor.ast_squeeze(ast, config);
+
+                    fileContents = processor.gen_code(ast, config);
+
+                    if (config.max_line_length) {
+                        fileContents = processor.split_lines(fileContents, config.max_line_length);
+                    }
+
+                    //Add trailing semicolon to match uglifyjs command line version
+                    fileContents += ';';
+                } catch (e) {
+                    errMessage = e.toString();
+                    errMatch = /\nError(\r)?\n/.exec(errMessage);
+                    if (errMatch) {
+                        errMessage = errMessage.substring(0, errMatch.index);
+                    }
+                    throw new Error('Cannot uglify file: ' + fileName + '. Skipping it. Error is:\n' + errMessage);
+                }
+                return fileContents;
+            },
+            uglify2: function (fileName, fileContents, outFileName, keepLines, config) {
+                var result, existingMap, resultMap, finalMap, sourceIndex,
+                    uconfig = {},
+                    existingMapPath = outFileName + '.map',
+                    baseName = fileName && fileName.split('/').pop();
+
+                config = config || {};
+
+                lang.mixin(uconfig, config, true);
+
+                uconfig.fromString = true;
+
+                if (config.generateSourceMaps && outFileName) {
+                    uconfig.outSourceMap = baseName;
+
+                    if (file.exists(existingMapPath)) {
+                        uconfig.inSourceMap = existingMapPath;
+                        existingMap = JSON.parse(file.readFile(existingMapPath));
+                    }
+                }
+
+                logger.trace("Uglify2 file: " + fileName);
+
+                try {
+                    //var tempContents = fileContents.replace(/\/\/\# sourceMappingURL=.*$/, '');
+                    result = uglify2.minify(fileContents, uconfig, baseName + '.src.js');
+                    if (uconfig.outSourceMap && result.map) {
+                        resultMap = result.map;
+                        if (existingMap) {
+                            resultMap = JSON.parse(resultMap);
+                            finalMap = SourceMapGenerator.fromSourceMap(new SourceMapConsumer(resultMap));
+                            finalMap.applySourceMap(new SourceMapConsumer(existingMap));
+                            resultMap = finalMap.toString();
+                        } else {
+                            file.saveFile(outFileName + '.src.js', fileContents);
+                        }
+                        file.saveFile(outFileName + '.map', resultMap);
+                        fileContents = result.code + "\n//# sourceMappingURL=" + baseName + ".map";
+                    } else {
+                        fileContents = result.code;
+                    }
+                } catch (e) {
+                    throw new Error('Cannot uglify2 file: ' + fileName + '. Skipping it. Error is:\n' + e.toString());
+                }
+                return fileContents;
+            }
+        }
+    };
+
+    return optimize;
+});
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+/*
+ * This file patches require.js to communicate with the build system.
+ */
+
+//Using sloppy since this uses eval for some code like plugins,
+//which may not be strict mode compliant. So if use strict is used
+//below they will have strict rules applied and may cause an error.
+/*jslint sloppy: true, nomen: true, plusplus: true, regexp: true */
+/*global require, define: true */
+
+//NOT asking for require as a dependency since the goal is to modify the
+//global require below
+define('requirePatch', [ 'env!env/file', 'pragma', 'parse', 'lang', 'logger', 'commonJs', 'prim'], function (
+    file,
+    pragma,
+    parse,
+    lang,
+    logger,
+    commonJs,
+    prim
+) {
+
+    var allowRun = true,
+        hasProp = lang.hasProp,
+        falseProp = lang.falseProp,
+        getOwn = lang.getOwn;
+
+    //This method should be called when the patches to require should take hold.
+    return function () {
+        if (!allowRun) {
+            return;
+        }
+        allowRun = false;
+
+        var layer,
+            pluginBuilderRegExp = /(["']?)pluginBuilder(["']?)\s*[=\:]\s*["']([^'"\s]+)["']/,
+            oldNewContext = require.s.newContext,
+            oldDef,
+
+            //create local undefined values for module and exports,
+            //so that when files are evaled in this function they do not
+            //see the node values used for r.js
+            exports,
+            module;
+
+        /**
+         * Reset "global" build caches that are kept around between
+         * build layer builds. Useful to do when there are multiple
+         * top level requirejs.optimize() calls.
+         */
+        require._cacheReset = function () {
+            //Stored raw text caches, used by browser use.
+            require._cachedRawText = {};
+            //Stored cached file contents for reuse in other layers.
+            require._cachedFileContents = {};
+            //Store which cached files contain a require definition.
+            require._cachedDefinesRequireUrls = {};
+        };
+        require._cacheReset();
+
+        /**
+         * Makes sure the URL is something that can be supported by the
+         * optimization tool.
+         * @param {String} url
+         * @returns {Boolean}
+         */
+        require._isSupportedBuildUrl = function (url) {
+            //Ignore URLs with protocols, hosts or question marks, means either network
+            //access is needed to fetch it or it is too dynamic. Note that
+            //on Windows, full paths are used for some urls, which include
+            //the drive, like c:/something, so need to test for something other
+            //than just a colon.
+            if (url.indexOf("://") === -1 && url.indexOf("?") === -1 &&
+                    url.indexOf('empty:') !== 0 && url.indexOf('//') !== 0) {
+                return true;
+            } else {
+                if (!layer.ignoredUrls[url]) {
+                    if (url.indexOf('empty:') === -1) {
+                        logger.info('Cannot optimize network URL, skipping: ' + url);
+                    }
+                    layer.ignoredUrls[url] = true;
+                }
+                return false;
+            }
+        };
+
+        function normalizeUrlWithBase(context, moduleName, url) {
+            //Adjust the URL if it was not transformed to use baseUrl.
+            if (require.jsExtRegExp.test(moduleName)) {
+                url = (context.config.dir || context.config.dirBaseUrl) + url;
+            }
+            return url;
+        }
+
+        //Overrides the new context call to add existing tracking features.
+        require.s.newContext = function (name) {
+            var context = oldNewContext(name),
+                oldEnable = context.enable,
+                moduleProto = context.Module.prototype,
+                oldInit = moduleProto.init,
+                oldCallPlugin = moduleProto.callPlugin;
+
+            //Only do this for the context used for building.
+            if (name === '_') {
+                //For build contexts, do everything sync
+                context.nextTick = function (fn) {
+                    fn();
+                };
+
+                context.needFullExec = {};
+                context.fullExec = {};
+                context.plugins = {};
+                context.buildShimExports = {};
+
+                //Override the shim exports function generator to just
+                //spit out strings that can be used in the stringified
+                //build output.
+                context.makeShimExports = function (value) {
+                    function fn() {
+                        return '(function (global) {\n' +
+                            '    return function () {\n' +
+                            '        var ret, fn;\n' +
+                            (value.init ?
+                                    ('       fn = ' + value.init.toString() + ';\n' +
+                                    '        ret = fn.apply(global, arguments);\n') : '') +
+                            (value.exports ?
+                                    '        return ret || global.' + value.exports + ';\n' :
+                                    '        return ret;\n') +
+                            '    };\n' +
+                            '}(this))';
+                    }
+
+                    return fn;
+                };
+
+                context.enable = function (depMap, parent) {
+                    var id = depMap.id,
+                        parentId = parent && parent.map.id,
+                        needFullExec = context.needFullExec,
+                        fullExec = context.fullExec,
+                        mod = getOwn(context.registry, id);
+
+                    if (mod && !mod.defined) {
+                        if (parentId && getOwn(needFullExec, parentId)) {
+                            needFullExec[id] = true;
+                        }
+
+                    } else if ((getOwn(needFullExec, id) && falseProp(fullExec, id)) ||
+                               (parentId && getOwn(needFullExec, parentId) &&
+                                falseProp(fullExec, id))) {
+                        context.require.undef(id);
+                    }
+
+                    return oldEnable.apply(context, arguments);
+                };
+
+                //Override load so that the file paths can be collected.
+                context.load = function (moduleName, url) {
+                    /*jslint evil: true */
+                    var contents, pluginBuilderMatch, builderName,
+                        shim, shimExports;
+
+                    //Do not mark the url as fetched if it is
+                    //not an empty: URL, used by the optimizer.
+                    //In that case we need to be sure to call
+                    //load() for each module that is mapped to
+                    //empty: so that dependencies are satisfied
+                    //correctly.
+                    if (url.indexOf('empty:') === 0) {
+                        delete context.urlFetched[url];
+                    }
+
+                    //Only handle urls that can be inlined, so that means avoiding some
+                    //URLs like ones that require network access or may be too dynamic,
+                    //like JSONP
+                    if (require._isSupportedBuildUrl(url)) {
+                        //Adjust the URL if it was not transformed to use baseUrl.
+                        url = normalizeUrlWithBase(context, moduleName, url);
+
+                        //Save the module name to path  and path to module name mappings.
+                        layer.buildPathMap[moduleName] = url;
+                        layer.buildFileToModule[url] = moduleName;
+
+                        if (hasProp(context.plugins, moduleName)) {
+                            //plugins need to have their source evaled as-is.
+                            context.needFullExec[moduleName] = true;
+                        }
+
+                        prim().start(function () {
+                            if (hasProp(require._cachedFileContents, url) &&
+                                    (falseProp(context.needFullExec, moduleName) ||
+                                    getOwn(context.fullExec, moduleName))) {
+                                contents = require._cachedFileContents[url];
+
+                                //If it defines require, mark it so it can be hoisted.
+                                //Done here and in the else below, before the
+                                //else block removes code from the contents.
+                                //Related to #263
+                                if (!layer.existingRequireUrl && require._cachedDefinesRequireUrls[url]) {
+                                    layer.existingRequireUrl = url;
+                                }
+                            } else {
+                                //Load the file contents, process for conditionals, then
+                                //evaluate it.
+                                return require._cacheReadAsync(url).then(function (text) {
+                                    contents = text;
+
+                                    if (context.config.cjsTranslate &&
+                                        (!context.config.shim || !lang.hasProp(context.config.shim, moduleName))) {
+                                        contents = commonJs.convert(url, contents);
+                                    }
+
+                                    //If there is a read filter, run it now.
+                                    if (context.config.onBuildRead) {
+                                        contents = context.config.onBuildRead(moduleName, url, contents);
+                                    }
+
+                                    contents = pragma.process(url, contents, context.config, 'OnExecute');
+
+                                    //Find out if the file contains a require() definition. Need to know
+                                    //this so we can inject plugins right after it, but before they are needed,
+                                    //and to make sure this file is first, so that define calls work.
+                                    try {
+                                        if (!layer.existingRequireUrl && parse.definesRequire(url, contents)) {
+                                            layer.existingRequireUrl = url;
+                                            require._cachedDefinesRequireUrls[url] = true;
+                                        }
+                                    } catch (e1) {
+                                        throw new Error('Parse error using esprima ' +
+                                                        'for file: ' + url + '\n' + e1);
+                                    }
+                                }).then(function () {
+                                    if (hasProp(context.plugins, moduleName)) {
+                                        //This is a loader plugin, check to see if it has a build extension,
+                                        //otherwise the plugin will act as the plugin builder too.
+                                        pluginBuilderMatch = pluginBuilderRegExp.exec(contents);
+                                        if (pluginBuilderMatch) {
+                                            //Load the plugin builder for the plugin contents.
+                                            builderName = context.makeModuleMap(pluginBuilderMatch[3],
+                                                                                context.makeModuleMap(moduleName),
+                                                                                null,
+                                                                                true).id;
+                                            return require._cacheReadAsync(context.nameToUrl(builderName));
+                                        }
+                                    }
+                                    return contents;
+                                }).then(function (text) {
+                                    contents = text;
+
+                                    //Parse out the require and define calls.
+                                    //Do this even for plugins in case they have their own
+                                    //dependencies that may be separate to how the pluginBuilder works.
+                                    try {
+                                        if (falseProp(context.needFullExec, moduleName)) {
+                                            contents = parse(moduleName, url, contents, {
+                                                insertNeedsDefine: true,
+                                                has: context.config.has,
+                                                findNestedDependencies: context.config.findNestedDependencies
+                                            });
+                                        }
+                                    } catch (e2) {
+                                        throw new Error('Parse error using esprima ' +
+                                                        'for file: ' + url + '\n' + e2);
+                                    }
+
+                                    require._cachedFileContents[url] = contents;
+                                });
+                            }
+                        }).then(function () {
+                            if (contents) {
+                                eval(contents);
+                            }
+
+                            try {
+                                //If have a string shim config, and this is
+                                //a fully executed module, try to see if
+                                //it created a variable in this eval scope
+                                if (getOwn(context.needFullExec, moduleName)) {
+                                    shim = getOwn(context.config.shim, moduleName);
+                                    if (shim && shim.exports) {
+                                        shimExports = eval(shim.exports);
+                                        if (typeof shimExports !== 'undefined') {
+                                            context.buildShimExports[moduleName] = shimExports;
+                                        }
+                                    }
+                                }
+
+                                //Need to close out completion of this module
+                                //so that listeners will get notified that it is available.
+                                context.completeLoad(moduleName);
+                            } catch (e) {
+                                //Track which module could not complete loading.
+                                if (!e.moduleTree) {
+                                    e.moduleTree = [];
+                                }
+                                e.moduleTree.push(moduleName);
+                                throw e;
+                            }
+                        }).then(null, function (eOuter) {
+
+                            if (!eOuter.fileName) {
+                                eOuter.fileName = url;
+                            }
+                            throw eOuter;
+                        }).end();
+                    } else {
+                        //With unsupported URLs still need to call completeLoad to
+                        //finish loading.
+                        context.completeLoad(moduleName);
+                    }
+                };
+
+                //Marks module has having a name, and optionally executes the
+                //callback, but only if it meets certain criteria.
+                context.execCb = function (name, cb, args, exports) {
+                    var buildShimExports = getOwn(layer.context.buildShimExports, name);
+
+                    if (buildShimExports) {
+                        return buildShimExports;
+                    } else if (cb.__requireJsBuild || getOwn(layer.context.needFullExec, name)) {
+                        return cb.apply(exports, args);
+                    }
+                    return undefined;
+                };
+
+                moduleProto.init = function (depMaps) {
+                    if (context.needFullExec[this.map.id]) {
+                        lang.each(depMaps, lang.bind(this, function (depMap) {
+                            if (typeof depMap === 'string') {
+                                depMap = context.makeModuleMap(depMap,
+                                               (this.map.isDefine ? this.map : this.map.parentMap));
+                            }
+
+                            if (!context.fullExec[depMap.id]) {
+                                context.require.undef(depMap.id);
+                            }
+                        }));
+                    }
+
+                    return oldInit.apply(this, arguments);
+                };
+
+                moduleProto.callPlugin = function () {
+                    var map = this.map,
+                        pluginMap = context.makeModuleMap(map.prefix),
+                        pluginId = pluginMap.id,
+                        pluginMod = getOwn(context.registry, pluginId);
+
+                    context.plugins[pluginId] = true;
+                    context.needFullExec[pluginId] = true;
+
+                    //If the module is not waiting to finish being defined,
+                    //undef it and start over, to get full execution.
+                    if (falseProp(context.fullExec, pluginId) && (!pluginMod || pluginMod.defined)) {
+                        context.require.undef(pluginMap.id);
+                    }
+
+                    return oldCallPlugin.apply(this, arguments);
+                };
+            }
+
+            return context;
+        };
+
+        //Clear up the existing context so that the newContext modifications
+        //above will be active.
+        delete require.s.contexts._;
+
+        /** Reset state for each build layer pass. */
+        require._buildReset = function () {
+            var oldContext = require.s.contexts._;
+
+            //Clear up the existing context.
+            delete require.s.contexts._;
+
+            //Set up new context, so the layer object can hold onto it.
+            require({});
+
+            layer = require._layer = {
+                buildPathMap: {},
+                buildFileToModule: {},
+                buildFilePaths: [],
+                pathAdded: {},
+                modulesWithNames: {},
+                needsDefine: {},
+                existingRequireUrl: "",
+                ignoredUrls: {},
+                context: require.s.contexts._
+            };
+
+            //Return the previous context in case it is needed, like for
+            //the basic config object.
+            return oldContext;
+        };
+
+        require._buildReset();
+
+        //Override define() to catch modules that just define an object, so that
+        //a dummy define call is not put in the build file for them. They do
+        //not end up getting defined via context.execCb, so we need to catch them
+        //at the define call.
+        oldDef = define;
+
+        //This function signature does not have to be exact, just match what we
+        //are looking for.
+        define = function (name) {
+            if (typeof name === "string" && falseProp(layer.needsDefine, name)) {
+                layer.modulesWithNames[name] = true;
+            }
+            return oldDef.apply(require, arguments);
+        };
+
+        define.amd = oldDef.amd;
+
+        //Add some utilities for plugins
+        require._readFile = file.readFile;
+        require._fileExists = function (path) {
+            return file.exists(path);
+        };
+
+        //Called when execManager runs for a dependency. Used to figure out
+        //what order of execution.
+        require.onResourceLoad = function (context, map) {
+            var id = map.id,
+                url;
+
+            //If build needed a full execution, indicate it
+            //has been done now. But only do it if the context is tracking
+            //that. Only valid for the context used in a build, not for
+            //other contexts being run, like for useLib, plain requirejs
+            //use in node/rhino.
+            if (context.needFullExec && getOwn(context.needFullExec, id)) {
+                context.fullExec[id] = true;
+            }
+
+            //A plugin.
+            if (map.prefix) {
+                if (falseProp(layer.pathAdded, id)) {
+                    layer.buildFilePaths.push(id);
+                    //For plugins the real path is not knowable, use the name
+                    //for both module to file and file to module mappings.
+                    layer.buildPathMap[id] = id;
+                    layer.buildFileToModule[id] = id;
+                    layer.modulesWithNames[id] = true;
+                    layer.pathAdded[id] = true;
+                }
+            } else if (map.url && require._isSupportedBuildUrl(map.url)) {
+                //If the url has not been added to the layer yet, and it
+                //is from an actual file that was loaded, add it now.
+                url = normalizeUrlWithBase(context, id, map.url);
+                if (!layer.pathAdded[url] && getOwn(layer.buildPathMap, id)) {
+                    //Remember the list of dependencies for this layer.
+                    layer.buildFilePaths.push(url);
+                    layer.pathAdded[url] = true;
+                }
+            }
+        };
+
+        //Called by output of the parse() function, when a file does not
+        //explicitly call define, probably just require, but the parse()
+        //function normalizes on define() for dependency mapping and file
+        //ordering works correctly.
+        require.needsDefine = function (moduleName) {
+            layer.needsDefine[moduleName] = true;
+        };
+    };
+});
+/**
+ * @license RequireJS Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint */
+/*global define: false, console: false */
+
+define('commonJs', ['env!env/file', 'parse'], function (file, parse) {
+    'use strict';
+    var commonJs = {
+        //Set to false if you do not want this file to log. Useful in environments
+        //like node where you want the work to happen without noise.
+        useLog: true,
+
+        convertDir: function (commonJsPath, savePath) {
+            var fileList, i,
+                jsFileRegExp = /\.js$/,
+                fileName, convertedFileName, fileContents;
+
+            //Get list of files to convert.
+            fileList = file.getFilteredFileList(commonJsPath, /\w/, true);
+
+            //Normalize on front slashes and make sure the paths do not end in a slash.
+            commonJsPath = commonJsPath.replace(/\\/g, "/");
+            savePath = savePath.replace(/\\/g, "/");
+            if (commonJsPath.charAt(commonJsPath.length - 1) === "/") {
+                commonJsPath = commonJsPath.substring(0, commonJsPath.length - 1);
+            }
+            if (savePath.charAt(savePath.length - 1) === "/") {
+                savePath = savePath.substring(0, savePath.length - 1);
+            }
+
+            //Cycle through all the JS files and convert them.
+            if (!fileList || !fileList.length) {
+                if (commonJs.useLog) {
+                    if (commonJsPath === "convert") {
+                        //A request just to convert one file.
+                        console.log('\n\n' + commonJs.convert(savePath, file.readFile(savePath)));
+                    } else {
+                        console.log("No files to convert in directory: " + commonJsPath);
+                    }
+                }
+            } else {
+                for (i = 0; i < fileList.length; i++) {
+                    fileName = fileList[i];
+                    convertedFileName = fileName.replace(commonJsPath, savePath);
+
+                    //Handle JS files.
+                    if (jsFileRegExp.test(fileName)) {
+                        fileContents = file.readFile(fileName);
+                        fileContents = commonJs.convert(fileName, fileContents);
+                        file.saveUtf8File(convertedFileName, fileContents);
+                    } else {
+                        //Just copy the file over.
+                        file.copyFile(fileName, convertedFileName, true);
+                    }
+                }
+            }
+        },
+
+        /**
+         * Does the actual file conversion.
+         *
+         * @param {String} fileName the name of the file.
+         *
+         * @param {String} fileContents the contents of a file :)
+         *
+         * @returns {String} the converted contents
+         */
+        convert: function (fileName, fileContents) {
+            //Strip out comments.
+            try {
+                var preamble = '',
+                    commonJsProps = parse.usesCommonJs(fileName, fileContents);
+
+                //First see if the module is not already RequireJS-formatted.
+                if (parse.usesAmdOrRequireJs(fileName, fileContents) || !commonJsProps) {
+                    return fileContents;
+                }
+
+                if (commonJsProps.dirname || commonJsProps.filename) {
+                    preamble = 'var __filename = module.uri || "", ' +
+                               '__dirname = __filename.substring(0, __filename.lastIndexOf("/") + 1); ';
+                }
+
+                //Construct the wrapper boilerplate.
+                fileContents = 'define(function (require, exports, module) {' +
+                    preamble +
+                    fileContents +
+                    '\n});\n';
+
+            } catch (e) {
+                console.log("commonJs.convert: COULD NOT CONVERT: " + fileName + ", so skipping it. Error was: " + e);
+                return fileContents;
+            }
+
+            return fileContents;
+        }
+    };
+
+    return commonJs;
+});
+/**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*jslint plusplus: true, nomen: true, regexp: true  */
+/*global define, requirejs */
+
+
+define('build', function (require) {
+    'use strict';
+
+    var build, buildBaseConfig,
+        lang = require('lang'),
+        prim = require('prim'),
+        logger = require('logger'),
+        file = require('env!env/file'),
+        parse = require('parse'),
+        optimize = require('optimize'),
+        pragma = require('pragma'),
+        transform = require('transform'),
+        requirePatch = require('requirePatch'),
+        env = require('env'),
+        commonJs = require('commonJs'),
+        SourceMapGenerator = require('source-map/source-map-generator'),
+        hasProp = lang.hasProp,
+        getOwn = lang.getOwn,
+        falseProp = lang.falseProp,
+        endsWithSemiColonRegExp = /;\s*$/,
+        resourceIsModuleIdRegExp = /^[\w\/\\\.]+$/;
+
+    prim.nextTick = function (fn) {
+        fn();
+    };
+
+    //Now map require to the outermost requirejs, now that we have
+    //local dependencies for this module. The rest of the require use is
+    //manipulating the requirejs loader.
+    require = requirejs;
+
+    //Caching function for performance. Attached to
+    //require so it can be reused in requirePatch.js. _cachedRawText
+    //set up by requirePatch.js
+    require._cacheReadAsync = function (path, encoding) {
+        var d;
+
+        if (lang.hasProp(require._cachedRawText, path)) {
+            d = prim();
+            d.resolve(require._cachedRawText[path]);
+            return d.promise;
+        } else {
+            return file.readFileAsync(path, encoding).then(function (text) {
+                require._cachedRawText[path] = text;
+                return text;
+            });
+        }
+    };
+
+    buildBaseConfig = {
+        appDir: "",
+        pragmas: {},
+        paths: {},
+        optimize: "uglify",
+        optimizeCss: "standard.keepLines",
+        inlineText: true,
+        isBuild: true,
+        optimizeAllPluginResources: false,
+        findNestedDependencies: false,
+        preserveLicenseComments: true,
+        //By default, all files/directories are copied, unless
+        //they match this regexp, by default just excludes .folders
+        dirExclusionRegExp: file.dirExclusionRegExp,
+        _buildPathToModuleIndex: {}
+    };
+
+    /**
+     * Some JS may not be valid if concatenated with other JS, in particular
+     * the style of omitting semicolons and rely on ASI. Add a semicolon in
+     * those cases.
+     */
+    function addSemiColon(text, config) {
+        if (config.skipSemiColonInsertion || endsWithSemiColonRegExp.test(text)) {
+            return text;
+        } else {
+            return text + ";";
+        }
+    }
+
+    function endsWithSlash(dirName) {
+        if (dirName.charAt(dirName.length - 1) !== "/") {
+            dirName += "/";
+        }
+        return dirName;
+    }
+
+    //Method used by plugin writeFile calls, defined up here to avoid
+    //jslint warning about "making a function in a loop".
+    function makeWriteFile(namespace, layer) {
+        function writeFile(name, contents) {
+            logger.trace('Saving plugin-optimized file: ' + name);
+            file.saveUtf8File(name, contents);
+        }
+
+        writeFile.asModule = function (moduleName, fileName, contents) {
+            writeFile(fileName,
+                build.toTransport(namespace, moduleName, fileName, contents, layer));
+        };
+
+        return writeFile;
+    }
+
+    /**
+     * Main API entry point into the build. The args argument can either be
+     * an array of arguments (like the onese passed on a command-line),
+     * or it can be a JavaScript object that has the format of a build profile
+     * file.
+     *
+     * If it is an object, then in addition to the normal properties allowed in
+     * a build profile file, the object should contain one other property:
+     *
+     * The object could also contain a "buildFile" property, which is a string
+     * that is the file path to a build profile that contains the rest
+     * of the build profile directives.
+     *
+     * This function does not return a status, it should throw an error if
+     * there is a problem completing the build.
+     */
+    build = function (args) {
+        var buildFile, cmdConfig, errorMsg, errorStack, stackMatch, errorTree,
+            i, j, errorMod,
+            stackRegExp = /( {4}at[^\n]+)\n/,
+            standardIndent = '  ';
+
+        return prim().start(function () {
+            if (!args || lang.isArray(args)) {
+                if (!args || args.length < 1) {
+                    logger.error("build.js buildProfile.js\n" +
+                          "where buildProfile.js is the name of the build file (see example.build.js for hints on how to make a build file).");
+                    return undefined;
+                }
+
+                //Next args can include a build file path as well as other build args.
+                //build file path comes first. If it does not contain an = then it is
+                //a build file path. Otherwise, just all build args.
+                if (args[0].indexOf("=") === -1) {
+                    buildFile = args[0];
+                    args.splice(0, 1);
+                }
+
+                //Remaining args are options to the build
+                cmdConfig = build.convertArrayToObject(args);
+                cmdConfig.buildFile = buildFile;
+            } else {
+                cmdConfig = args;
+            }
+
+            return build._run(cmdConfig);
+        }).then(null, function (e) {
+            var err;
+
+            errorMsg = e.toString();
+            errorTree = e.moduleTree;
+            stackMatch = stackRegExp.exec(errorMsg);
+
+            if (stackMatch) {
+                errorMsg += errorMsg.substring(0, stackMatch.index + stackMatch[0].length + 1);
+            }
+
+            //If a module tree that shows what module triggered the error,
+            //print it out.
+            if (errorTree && errorTree.length > 0) {
+                errorMsg += '\nIn module tree:\n';
+
+                for (i = errorTree.length - 1; i > -1; i--) {
+                    errorMod = errorTree[i];
+                    if (errorMod) {
+                        for (j = errorTree.length - i; j > -1; j--) {
+                            errorMsg += standardIndent;
+                        }
+                        errorMsg += errorMod + '\n';
+                    }
+                }
+
+                logger.error(errorMsg);
+            }
+
+            errorStack = e.stack;
+
+            if (typeof args === 'string' && args.indexOf('stacktrace=true') !== -1) {
+                errorMsg += '\n' + errorStack;
+            } else {
+                if (!stackMatch && errorStack) {
+                    //Just trim out the first "at" in the stack.
+                    stackMatch = stackRegExp.exec(errorStack);
+                    if (stackMatch) {
+                        errorMsg += '\n' + stackMatch[0] || '';
+                    }
+                }
+            }
+
+            err = new Error(errorMsg);
+            err.originalError = e;
+            throw err;
+        });
+    };
+
+    build._run = function (cmdConfig) {
+        var buildPaths, fileName, fileNames,
+            paths, i,
+            baseConfig, config,
+            modules, srcPath, buildContext,
+            destPath, moduleMap, parentModuleMap, context,
+            resources, resource, plugin, fileContents,
+            pluginProcessed = {},
+            buildFileContents = "",
+            pluginCollector = {};
+
+        return prim().start(function () {
+            var prop;
+
+            //Can now run the patches to require.js to allow it to be used for
+            //build generation. Do it here instead of at the top of the module
+            //because we want normal require behavior to load the build tool
+            //then want to switch to build mode.
+            requirePatch();
+
+            config = build.createConfig(cmdConfig);
+            paths = config.paths;
+
+            //Remove the previous build dir, in case it contains source transforms,
+            //like the ones done with onBuildRead and onBuildWrite.
+            if (config.dir && !config.keepBuildDir && file.exists(config.dir)) {
+                file.deleteFile(config.dir);
+            }
+
+            if (!config.out && !config.cssIn) {
+                //This is not just a one-off file build but a full build profile, with
+                //lots of files to process.
+
+                //First copy all the baseUrl content
+                file.copyDir((config.appDir || config.baseUrl), config.dir, /\w/, true);
+
+                //Adjust baseUrl if config.appDir is in play, and set up build output paths.
+                buildPaths = {};
+                if (config.appDir) {
+                    //All the paths should be inside the appDir, so just adjust
+                    //the paths to use the dirBaseUrl
+                    for (prop in paths) {
+                        if (hasProp(paths, prop)) {
+                            buildPaths[prop] = paths[prop].replace(config.appDir, config.dir);
+                        }
+                    }
+                } else {
+                    //If no appDir, then make sure to copy the other paths to this directory.
+                    for (prop in paths) {
+                        if (hasProp(paths, prop)) {
+                            //Set up build path for each path prefix, but only do so
+                            //if the path falls out of the current baseUrl
+                            if (paths[prop].indexOf(config.baseUrl) === 0) {
+                                buildPaths[prop] = paths[prop].replace(config.baseUrl, config.dirBaseUrl);
+                            } else {
+                                buildPaths[prop] = paths[prop] === 'empty:' ? 'empty:' : prop.replace(/\./g, "/");
+
+                                //Make sure source path is fully formed with baseUrl,
+                                //if it is a relative URL.
+                                srcPath = paths[prop];
+                                if (srcPath.indexOf('/') !== 0 && srcPath.indexOf(':') === -1) {
+                                    srcPath = config.baseUrl + srcPath;
+                                }
+
+                                destPath = config.dirBaseUrl + buildPaths[prop];
+
+                                //Skip empty: paths
+                                if (srcPath !== 'empty:') {
+                                    //If the srcPath is a directory, copy the whole directory.
+                                    if (file.exists(srcPath) && file.isDirectory(srcPath)) {
+                                        //Copy files to build area. Copy all files (the /\w/ regexp)
+                                        file.copyDir(srcPath, destPath, /\w/, true);
+                                    } else {
+                                        //Try a .js extension
+                                        srcPath += '.js';
+                                        destPath += '.js';
+                                        file.copyFile(srcPath, destPath);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            //Figure out source file location for each module layer. Do this by seeding require
+            //with source area configuration. This is needed so that later the module layers
+            //can be manually copied over to the source area, since the build may be
+            //require multiple times and the above copyDir call only copies newer files.
+            require({
+                baseUrl: config.baseUrl,
+                paths: paths,
+                packagePaths: config.packagePaths,
+                packages: config.packages
+            });
+            buildContext = require.s.contexts._;
+            modules = config.modules;
+
+            if (modules) {
+                modules.forEach(function (module) {
+                    if (module.name) {
+                        module._sourcePath = buildContext.nameToUrl(module.name);
+                        //If the module does not exist, and this is not a "new" module layer,
+                        //as indicated by a true "create" property on the module, and
+                        //it is not a plugin-loaded resource, and there is no
+                        //'rawText' containing the module's source then throw an error.
+                        if (!file.exists(module._sourcePath) && !module.create &&
+                                module.name.indexOf('!') === -1 &&
+                                (!config.rawText || !lang.hasProp(config.rawText, module.name))) {
+                            throw new Error("ERROR: module path does not exist: " +
+                                            module._sourcePath + " for module named: " + module.name +
+                                            ". Path is relative to: " + file.absPath('.'));
+                        }
+                    }
+                });
+            }
+
+            if (config.out) {
+                //Just set up the _buildPath for the module layer.
+                require(config);
+                if (!config.cssIn) {
+                    config.modules[0]._buildPath = typeof config.out === 'function' ?
+                                                   'FUNCTION' : config.out;
+                }
+            } else if (!config.cssIn) {
+                //Now set up the config for require to use the build area, and calculate the
+                //build file locations. Pass along any config info too.
+                baseConfig = {
+                    baseUrl: config.dirBaseUrl,
+                    paths: buildPaths
+                };
+
+                lang.mixin(baseConfig, config);
+                require(baseConfig);
+
+                if (modules) {
+                    modules.forEach(function (module) {
+                        if (module.name) {
+                            module._buildPath = buildContext.nameToUrl(module.name, null);
+                            if (!module.create) {
+                                file.copyFile(module._sourcePath, module._buildPath);
+                            }
+                        }
+                    });
+                }
+            }
+
+            //Run CSS optimizations before doing JS module tracing, to allow
+            //things like text loader plugins loading CSS to get the optimized
+            //CSS.
+            if (config.optimizeCss && config.optimizeCss !== "none" && config.dir) {
+                buildFileContents += optimize.css(config.dir, config);
+            }
+        }).then(function() {
+            baseConfig = lang.deeplikeCopy(require.s.contexts._.config);
+        }).then(function () {
+            var actions = [];
+
+            if (modules) {
+                actions = modules.map(function (module, i) {
+                    return function () {
+                        //Save off buildPath to module index in a hash for quicker
+                        //lookup later.
+                        config._buildPathToModuleIndex[file.normalize(module._buildPath)] = i;
+
+                        //Call require to calculate dependencies.
+                        return build.traceDependencies(module, config, baseConfig)
+                            .then(function (layer) {
+                                module.layer = layer;
+                            });
+                    };
+                });
+
+                return prim.serial(actions);
+            }
+        }).then(function () {
+            var actions;
+
+            if (modules) {
+                //Now build up shadow layers for anything that should be excluded.
+                //Do this after tracing dependencies for each module, in case one
+                //of those modules end up being one of the excluded values.
+                actions = modules.map(function (module) {
+                    return function () {
+                        if (module.exclude) {
+                            module.excludeLayers = [];
+                            return prim.serial(module.exclude.map(function (exclude, i) {
+                                return function () {
+                                    //See if it is already in the list of modules.
+                                    //If not trace dependencies for it.
+                                    var found = build.findBuildModule(exclude, modules);
+                                    if (found) {
+                                        module.excludeLayers[i] = found;
+                                    } else {
+                                        return build.traceDependencies({name: exclude}, config, baseConfig)
+                                            .then(function (layer) {
+                                                module.excludeLayers[i] = { layer: layer };
+                                            });
+                                    }
+                                };
+                            }));
+                        }
+                    };
+                });
+
+                return prim.serial(actions);
+            }
+        }).then(function () {
+            if (modules) {
+                return prim.serial(modules.map(function (module) {
+                    return function () {
+                        if (module.exclude) {
+                            //module.exclude is an array of module names. For each one,
+                            //get the nested dependencies for it via a matching entry
+                            //in the module.excludeLayers array.
+                            module.exclude.forEach(function (excludeModule, i) {
+                                var excludeLayer = module.excludeLayers[i].layer,
+                                    map = excludeLayer.buildFileToModule;
+                                excludeLayer.buildFilePaths.forEach(function(filePath){
+                                    build.removeModulePath(map[filePath], filePath, module.layer);
+                                });
+                            });
+                        }
+                        if (module.excludeShallow) {
+                            //module.excludeShallow is an array of module names.
+                            //shallow exclusions are just that module itself, and not
+                            //its nested dependencies.
+                            module.excludeShallow.forEach(function (excludeShallowModule) {
+                                var path = getOwn(module.layer.buildPathMap, excludeShallowModule);
+                                if (path) {
+                                    build.removeModulePath(excludeShallowModule, path, module.layer);
+                                }
+                            });
+                        }
+
+                        //Flatten them and collect the build output for each module.
+                        return build.flattenModule(module, module.layer, config).then(function (builtModule) {
+                            var finalText, baseName;
+                            //Save it to a temp file for now, in case there are other layers that
+                            //contain optimized content that should not be included in later
+                            //layer optimizations. See issue #56.
+                            if (module._buildPath === 'FUNCTION') {
+                                module._buildText = builtModule.text;
+                                module._buildSourceMap = builtModule.sourceMap;
+                            } else {
+                                finalText = builtModule.text;
+                                if (builtModule.sourceMap) {
+                                    baseName = module._buildPath.split('/');
+                                    baseName = baseName.pop();
+                                    finalText += '\n//# sourceMappingURL=' + baseName + '.map';
+                                    file.saveUtf8File(module._buildPath + '.map', builtModule.sourceMap);
+                                }
+                                file.saveUtf8File(module._buildPath + '-temp', finalText);
+
+                            }
+                            buildFileContents += builtModule.buildText;
+                        });
+                    };
+                }));
+            }
+        }).then(function () {
+            var moduleName;
+            if (modules) {
+                //Now move the build layers to their final position.
+                modules.forEach(function (module) {
+                    var finalPath = module._buildPath;
+                    if (finalPath !== 'FUNCTION') {
+                        if (file.exists(finalPath)) {
+                            file.deleteFile(finalPath);
+                        }
+                        file.renameFile(finalPath + '-temp', finalPath);
+
+                        //And finally, if removeCombined is specified, remove
+                        //any of the files that were used in this layer.
+                        //Be sure not to remove other build layers.
+                        if (config.removeCombined && !config.out) {
+                            module.layer.buildFilePaths.forEach(function (path) {
+                                var isLayer = modules.some(function (mod) {
+                                        return mod._buildPath === path;
+                                    }),
+                                    relPath = build.makeRelativeFilePath(config.dir, path);
+
+                                if (file.exists(path) &&
+                                    // not a build layer target
+                                    !isLayer &&
+                                    // not outside the build directory
+                                    relPath.indexOf('..') !== 0) {
+                                    file.deleteFile(path);
+                                }
+                            });
+                        }
+                    }
+
+                    //Signal layer is done
+                    if (config.onModuleBundleComplete) {
+                        config.onModuleBundleComplete(module.onCompleteData);
+                    }
+                });
+            }
+
+            //If removeCombined in play, remove any empty directories that
+            //may now exist because of its use
+            if (config.removeCombined && !config.out && config.dir) {
+                file.deleteEmptyDirs(config.dir);
+            }
+
+            //Do other optimizations.
+            if (config.out && !config.cssIn) {
+                //Just need to worry about one JS file.
+                fileName = config.modules[0]._buildPath;
+                if (fileName === 'FUNCTION') {
+                    config.modules[0]._buildText = optimize.js(fileName,
+                                                               config.modules[0]._buildText,
+                                                               null,
+                                                               config);
+                } else {
+                    optimize.jsFile(fileName, null, fileName, config);
+                }
+            } else if (!config.cssIn) {
+                //Normal optimizations across modules.
+
+                //JS optimizations.
+                fileNames = file.getFilteredFileList(config.dir, /\.js$/, true);
+                fileNames.forEach(function (fileName) {
+                    var cfg, override, moduleIndex;
+
+                    //Generate the module name from the config.dir root.
+                    moduleName = fileName.replace(config.dir, '');
+                    //Get rid of the extension
+                    moduleName = moduleName.substring(0, moduleName.length - 3);
+
+                    //If there is an override for a specific layer build module,
+                    //and this file is that module, mix in the override for use
+                    //by optimize.jsFile.
+                    moduleIndex = getOwn(config._buildPathToModuleIndex, fileName);
+                    //Normalize, since getOwn could have returned undefined
+                    moduleIndex = moduleIndex === 0 || moduleIndex > 0 ? moduleIndex : -1;
+
+                    //Try to avoid extra work if the other files do not need to
+                    //be read. Build layers should be processed at the very
+                    //least for optimization.
+                    if (moduleIndex > -1 || !config.skipDirOptimize ||
+                            config.normalizeDirDefines === "all" ||
+                            config.cjsTranslate) {
+                        //Convert the file to transport format, but without a name
+                        //inserted (by passing null for moduleName) since the files are
+                        //standalone, one module per file.
+                        fileContents = file.readFile(fileName);
+
+
+                        //For builds, if wanting cjs translation, do it now, so that
+                        //the individual modules can be loaded cross domain via
+                        //plain script tags.
+                        if (config.cjsTranslate &&
+                            (!config.shim || !lang.hasProp(config.shim, moduleName))) {
+                            fileContents = commonJs.convert(fileName, fileContents);
+                        }
+
+                        if (moduleIndex === -1) {
+                            if (config.onBuildRead) {
+                                fileContents = config.onBuildRead(moduleName,
+                                                                  fileName,
+                                                                  fileContents);
+                            }
+
+                            //Only do transport normalization if this is not a build
+                            //layer (since it was already normalized) and if
+                            //normalizeDirDefines indicated all should be done.
+                            if (config.normalizeDirDefines === "all") {
+                                fileContents = build.toTransport(config.namespace,
+                                                             null,
+                                                             fileName,
+                                                             fileContents);
+                            }
+
+                            if (config.onBuildWrite) {
+                                fileContents = config.onBuildWrite(moduleName,
+                                                                   fileName,
+                                                                   fileContents);
+                            }
+                        }
+
+                        override = moduleIndex > -1 ?
+                                   config.modules[moduleIndex].override : null;
+                        if (override) {
+                            cfg = build.createOverrideConfig(config, override);
+                        } else {
+                            cfg = config;
+                        }
+
+                        if (moduleIndex > -1 || !config.skipDirOptimize) {
+                            optimize.jsFile(fileName, fileContents, fileName, cfg, pluginCollector);
+                        }
+                    }
+                });
+
+                //Normalize all the plugin resources.
+                context = require.s.contexts._;
+
+                for (moduleName in pluginCollector) {
+                    if (hasProp(pluginCollector, moduleName)) {
+                        parentModuleMap = context.makeModuleMap(moduleName);
+                        resources = pluginCollector[moduleName];
+                        for (i = 0; i < resources.length; i++) {
+                            resource = resources[i];
+                            moduleMap = context.makeModuleMap(resource, parentModuleMap);
+                            if (falseProp(context.plugins, moduleMap.prefix)) {
+                                //Set the value in context.plugins so it
+                                //will be evaluated as a full plugin.
+                                context.plugins[moduleMap.prefix] = true;
+
+                                //Do not bother if the plugin is not available.
+                                if (!file.exists(require.toUrl(moduleMap.prefix + '.js'))) {
+                                    continue;
+                                }
+
+                                //Rely on the require in the build environment
+                                //to be synchronous
+                                context.require([moduleMap.prefix]);
+
+                                //Now that the plugin is loaded, redo the moduleMap
+                                //since the plugin will need to normalize part of the path.
+                                moduleMap = context.makeModuleMap(resource, parentModuleMap);
+                            }
+
+                            //Only bother with plugin resources that can be handled
+                            //processed by the plugin, via support of the writeFile
+                            //method.
+                            if (falseProp(pluginProcessed, moduleMap.id)) {
+                                //Only do the work if the plugin was really loaded.
+                                //Using an internal access because the file may
+                                //not really be loaded.
+                                plugin = getOwn(context.defined, moduleMap.prefix);
+                                if (plugin && plugin.writeFile) {
+                                    plugin.writeFile(
+                                        moduleMap.prefix,
+                                        moduleMap.name,
+                                        require,
+                                        makeWriteFile(
+                                            config.namespace
+                                        ),
+                                        context.config
+                                    );
+                                }
+
+                                pluginProcessed[moduleMap.id] = true;
+                            }
+                        }
+
+                    }
+                }
+
+                //console.log('PLUGIN COLLECTOR: ' + JSON.stringify(pluginCollector, null, "  "));
+
+
+                //All module layers are done, write out the build.txt file.
+                file.saveUtf8File(config.dir + "build.txt", buildFileContents);
+            }
+
+            //If just have one CSS file to optimize, do that here.
+            if (config.cssIn) {
+                buildFileContents += optimize.cssFile(config.cssIn, config.out, config).buildText;
+            }
+
+            if (typeof config.out === 'function') {
+                config.out(config.modules[0]._buildText);
+            }
+
+            //Print out what was built into which layers.
+            if (buildFileContents) {
+                logger.info(buildFileContents);
+                return buildFileContents;
+            }
+
+            return '';
+        });
+    };
+
+    /**
+     * Converts command line args like "paths.foo=../some/path"
+     * result.paths = { foo: '../some/path' } where prop = paths,
+     * name = paths.foo and value = ../some/path, so it assumes the
+     * name=value splitting has already happened.
+     */
+    function stringDotToObj(result, name, value) {
+        var parts = name.split('.');
+
+        parts.forEach(function (prop, i) {
+            if (i === parts.length - 1) {
+                result[prop] = value;
+            } else {
+                if (falseProp(result, prop)) {
+                    result[prop] = {};
+                }
+                result = result[prop];
+            }
+
+        });
+    }
+
+    build.objProps = {
+        paths: true,
+        wrap: true,
+        pragmas: true,
+        pragmasOnSave: true,
+        has: true,
+        hasOnSave: true,
+        uglify: true,
+        uglify2: true,
+        closure: true,
+        map: true,
+        throwWhen: true
+    };
+
+    build.hasDotPropMatch = function (prop) {
+        var dotProp,
+            index = prop.indexOf('.');
+
+        if (index !== -1) {
+            dotProp = prop.substring(0, index);
+            return hasProp(build.objProps, dotProp);
+        }
+        return false;
+    };
+
+    /**
+     * Converts an array that has String members of "name=value"
+     * into an object, where the properties on the object are the names in the array.
+     * Also converts the strings "true" and "false" to booleans for the values.
+     * member name/value pairs, and converts some comma-separated lists into
+     * arrays.
+     * @param {Array} ary
+     */
+    build.convertArrayToObject = function (ary) {
+        var result = {}, i, separatorIndex, prop, value,
+            needArray = {
+                "include": true,
+                "exclude": true,
+                "excludeShallow": true,
+                "insertRequire": true,
+                "stubModules": true,
+                "deps": true
+            };
+
+        for (i = 0; i < ary.length; i++) {
+            separatorIndex = ary[i].indexOf("=");
+            if (separatorIndex === -1) {
+                throw "Malformed name/value pair: [" + ary[i] + "]. Format should be name=value";
+            }
+
+            value = ary[i].substring(separatorIndex + 1, ary[i].length);
+            if (value === "true") {
+                value = true;
+            } else if (value === "false") {
+                value = false;
+            }
+
+            prop = ary[i].substring(0, separatorIndex);
+
+            //Convert to array if necessary
+            if (getOwn(needArray, prop)) {
+                value = value.split(",");
+            }
+
+            if (build.hasDotPropMatch(prop)) {
+                stringDotToObj(result, prop, value);
+            } else {
+                result[prop] = value;
+            }
+        }
+        return result; //Object
+    };
+
+    build.makeAbsPath = function (path, absFilePath) {
+        if (!absFilePath) {
+            return path;
+        }
+
+        //Add abspath if necessary. If path starts with a slash or has a colon,
+        //then already is an abolute path.
+        if (path.indexOf('/') !== 0 && path.indexOf(':') === -1) {
+            path = absFilePath +
+                   (absFilePath.charAt(absFilePath.length - 1) === '/' ? '' : '/') +
+                   path;
+            path = file.normalize(path);
+        }
+        return path.replace(lang.backSlashRegExp, '/');
+    };
+
+    build.makeAbsObject = function (props, obj, absFilePath) {
+        var i, prop;
+        if (obj) {
+            for (i = 0; i < props.length; i++) {
+                prop = props[i];
+                if (hasProp(obj, prop) && typeof obj[prop] === 'string') {
+                    obj[prop] = build.makeAbsPath(obj[prop], absFilePath);
+                }
+            }
+        }
+    };
+
+    /**
+     * For any path in a possible config, make it absolute relative
+     * to the absFilePath passed in.
+     */
+    build.makeAbsConfig = function (config, absFilePath) {
+        var props, prop, i;
+
+        props = ["appDir", "dir", "baseUrl"];
+        for (i = 0; i < props.length; i++) {
+            prop = props[i];
+
+            if (getOwn(config, prop)) {
+                //Add abspath if necessary, make sure these paths end in
+                //slashes
+                if (prop === "baseUrl") {
+                    config.originalBaseUrl = config.baseUrl;
+                    if (config.appDir) {
+                        //If baseUrl with an appDir, the baseUrl is relative to
+                        //the appDir, *not* the absFilePath. appDir and dir are
+                        //made absolute before baseUrl, so this will work.
+                        config.baseUrl = build.makeAbsPath(config.originalBaseUrl, config.appDir);
+                    } else {
+                        //The dir output baseUrl is same as regular baseUrl, both
+                        //relative to the absFilePath.
+                        config.baseUrl = build.makeAbsPath(config[prop], absFilePath);
+                    }
+                } else {
+                    config[prop] = build.makeAbsPath(config[prop], absFilePath);
+                }
+
+                config[prop] = endsWithSlash(config[prop]);
+            }
+        }
+
+        build.makeAbsObject(["out", "cssIn"], config, absFilePath);
+        build.makeAbsObject(["startFile", "endFile"], config.wrap, absFilePath);
+    };
+
+    /**
+     * Creates a relative path to targetPath from refPath.
+     * Only deals with file paths, not folders. If folders,
+     * make sure paths end in a trailing '/'.
+     */
+    build.makeRelativeFilePath = function (refPath, targetPath) {
+        var i, dotLength, finalParts, length,
+            refParts = refPath.split('/'),
+            targetParts = targetPath.split('/'),
+            //Pull off file name
+            targetName = targetParts.pop(),
+            dotParts = [];
+
+        //Also pop off the ref file name to make the matches against
+        //targetParts equivalent.
+        refParts.pop();
+
+        length = refParts.length;
+
+        for (i = 0; i < length; i += 1) {
+            if (refParts[i] !== targetParts[i]) {
+                break;
+            }
+        }
+
+        //Now i is the index in which they diverge.
+        finalParts = targetParts.slice(i);
+
+        dotLength = length - i;
+        for (i = 0; i > -1 && i < dotLength; i += 1) {
+            dotParts.push('..');
+        }
+
+        return dotParts.join('/') + (dotParts.length ? '/' : '') +
+               finalParts.join('/') + (finalParts.length ? '/' : '') +
+               targetName;
+    };
+
+    build.nestedMix = {
+        paths: true,
+        has: true,
+        hasOnSave: true,
+        pragmas: true,
+        pragmasOnSave: true
+    };
+
+    /**
+     * Mixes additional source config into target config, and merges some
+     * nested config, like paths, correctly.
+     */
+    function mixConfig(target, source) {
+        var prop, value;
+
+        for (prop in source) {
+            if (hasProp(source, prop)) {
+                //If the value of the property is a plain object, then
+                //allow a one-level-deep mixing of it.
+                value = source[prop];
+                if (typeof value === 'object' && value &&
+                        !lang.isArray(value) && !lang.isFunction(value) &&
+                        !lang.isRegExp(value)) {
+                    target[prop] = lang.mixin({}, target[prop], value, true);
+                } else {
+                    target[prop] = value;
+                }
+            }
+        }
+
+        //Set up log level since it can affect if errors are thrown
+        //or caught and passed to errbacks while doing config setup.
+        if (lang.hasProp(target, 'logLevel')) {
+            logger.logLevel(target.logLevel);
+        }
+    }
+
+    /**
+     * Converts a wrap.startFile or endFile to be start/end as a string.
+     * the startFile/endFile values can be arrays.
+     */
+    function flattenWrapFile(wrap, keyName, absFilePath) {
+        var keyFileName = keyName + 'File';
+
+        if (typeof wrap[keyName] !== 'string' && wrap[keyFileName]) {
+            wrap[keyName] = '';
+            if (typeof wrap[keyFileName] === 'string') {
+                wrap[keyFileName] = [wrap[keyFileName]];
+            }
+            wrap[keyFileName].forEach(function (fileName) {
+                wrap[keyName] += (wrap[keyName] ? '\n' : '') +
+                    file.readFile(build.makeAbsPath(fileName, absFilePath));
+            });
+        } else if (wrap[keyName] === null ||  wrap[keyName] === undefined) {
+            //Allow missing one, just set to empty string.
+            wrap[keyName] = '';
+        } else if (typeof wrap[keyName] !== 'string') {
+            throw new Error('wrap.' + keyName + ' or wrap.' + keyFileName + ' malformed');
+        }
+    }
+
+    function normalizeWrapConfig(config, absFilePath) {
+        //Get any wrap text.
+        try {
+            if (config.wrap) {
+                if (config.wrap === true) {
+                    //Use default values.
+                    config.wrap = {
+                        start: '(function () {',
+                        end: '}());'
+                    };
+                } else {
+                    flattenWrapFile(config.wrap, 'start', absFilePath);
+                    flattenWrapFile(config.wrap, 'end', absFilePath);
+                }
+            }
+        } catch (wrapError) {
+            throw new Error('Malformed wrap config: ' + wrapError.toString());
+        }
+    }
+
+    /**
+     * Creates a config object for an optimization build.
+     * It will also read the build profile if it is available, to create
+     * the configuration.
+     *
+     * @param {Object} cfg config options that take priority
+     * over defaults and ones in the build file. These options could
+     * be from a command line, for instance.
+     *
+     * @param {Object} the created config object.
+     */
+    build.createConfig = function (cfg) {
+        /*jslint evil: true */
+        var config = {}, buildFileContents, buildFileConfig, mainConfig,
+            mainConfigFile, mainConfigPath, buildFile, absFilePath;
+
+        //Make sure all paths are relative to current directory.
+        absFilePath = file.absPath('.');
+        build.makeAbsConfig(cfg, absFilePath);
+        build.makeAbsConfig(buildBaseConfig, absFilePath);
+
+        lang.mixin(config, buildBaseConfig);
+        lang.mixin(config, cfg, true);
+
+        //Set up log level early since it can affect if errors are thrown
+        //or caught and passed to errbacks, even while constructing config.
+        if (lang.hasProp(config, 'logLevel')) {
+            logger.logLevel(config.logLevel);
+        }
+
+        if (config.buildFile) {
+            //A build file exists, load it to get more config.
+            buildFile = file.absPath(config.buildFile);
+
+            //Find the build file, and make sure it exists, if this is a build
+            //that has a build profile, and not just command line args with an in=path
+            if (!file.exists(buildFile)) {
+                throw new Error("ERROR: build file does not exist: " + buildFile);
+            }
+
+            absFilePath = config.baseUrl = file.absPath(file.parent(buildFile));
+
+            //Load build file options.
+            buildFileContents = file.readFile(buildFile);
+            try {
+                buildFileConfig = eval("(" + buildFileContents + ")");
+                build.makeAbsConfig(buildFileConfig, absFilePath);
+
+                //Mix in the config now so that items in mainConfigFile can
+                //be resolved relative to them if necessary, like if appDir
+                //is set here, but the baseUrl is in mainConfigFile. Will
+                //re-mix in the same build config later after mainConfigFile
+                //is processed, since build config should take priority.
+                mixConfig(config, buildFileConfig);
+            } catch (e) {
+                throw new Error("Build file " + buildFile + " is malformed: " + e);
+            }
+        }
+
+        mainConfigFile = config.mainConfigFile || (buildFileConfig && buildFileConfig.mainConfigFile);
+        if (mainConfigFile) {
+            mainConfigFile = build.makeAbsPath(mainConfigFile, absFilePath);
+            if (!file.exists(mainConfigFile)) {
+                throw new Error(mainConfigFile + ' does not exist.');
+            }
+            try {
+                mainConfig = parse.findConfig(file.readFile(mainConfigFile)).config;
+            } catch (configError) {
+                throw new Error('The config in mainConfigFile ' +
+                        mainConfigFile +
+                        ' cannot be used because it cannot be evaluated' +
+                        ' correctly while running in the optimizer. Try only' +
+                        ' using a config that is also valid JSON, or do not use' +
+                        ' mainConfigFile and instead copy the config values needed' +
+                        ' into a build file or command line arguments given to the optimizer.\n' +
+                        'Source error from parsing: ' + mainConfigFile + ': ' + configError);
+            }
+            if (mainConfig) {
+                mainConfigPath = mainConfigFile.substring(0, mainConfigFile.lastIndexOf('/'));
+
+                //Add in some existing config, like appDir, since they can be
+                //used inside the mainConfigFile -- paths and baseUrl are
+                //relative to them.
+                if (config.appDir && !mainConfig.appDir) {
+                    mainConfig.appDir = config.appDir;
+                }
+
+                //If no baseUrl, then use the directory holding the main config.
+                if (!mainConfig.baseUrl) {
+                    mainConfig.baseUrl = mainConfigPath;
+                }
+
+                build.makeAbsConfig(mainConfig, mainConfigPath);
+                mixConfig(config, mainConfig);
+            }
+        }
+
+        //Mix in build file config, but only after mainConfig has been mixed in.
+        if (buildFileConfig) {
+            mixConfig(config, buildFileConfig);
+        }
+
+        //Re-apply the override config values. Command line
+        //args should take precedence over build file values.
+        mixConfig(config, cfg);
+
+        //Fix paths to full paths so that they can be adjusted consistently
+        //lately to be in the output area.
+        lang.eachProp(config.paths, function (value, prop) {
+            if (lang.isArray(value)) {
+                throw new Error('paths fallback not supported in optimizer. ' +
+                                'Please provide a build config path override ' +
+                                'for ' + prop);
+            }
+            config.paths[prop] = build.makeAbsPath(value, config.baseUrl);
+        });
+
+        //Set final output dir
+        if (hasProp(config, "baseUrl")) {
+            if (config.appDir) {
+                config.dirBaseUrl = build.makeAbsPath(config.originalBaseUrl, config.dir);
+            } else {
+                config.dirBaseUrl = config.dir || config.baseUrl;
+            }
+            //Make sure dirBaseUrl ends in a slash, since it is
+            //concatenated with other strings.
+            config.dirBaseUrl = endsWithSlash(config.dirBaseUrl);
+        }
+
+        //Check for errors in config
+        if (config.main) {
+            throw new Error('"main" passed as an option, but the ' +
+                            'supported option is called "name".');
+        }
+        if (config.out && !config.name && !config.modules && !config.include &&
+                !config.cssIn) {
+            throw new Error('Missing either a "name", "include" or "modules" ' +
+                            'option');
+        }
+        if (config.cssIn) {
+            if (config.dir || config.appDir) {
+                throw new Error('cssIn is only for the output of single file ' +
+                    'CSS optimizations and is not compatible with "dir" or "appDir" configuration.');
+            }
+            if (!config.out) {
+                throw new Error('"out" option missing.');
+            }
+        }
+        if (!config.cssIn && !config.baseUrl) {
+            //Just use the current directory as the baseUrl
+            config.baseUrl = './';
+        }
+        if (!config.out && !config.dir) {
+            throw new Error('Missing either an "out" or "dir" config value. ' +
+                            'If using "appDir" for a full project optimization, ' +
+                            'use "dir". If you want to optimize to one file, ' +
+                            'use "out".');
+        }
+        if (config.appDir && config.out) {
+            throw new Error('"appDir" is not compatible with "out". Use "dir" ' +
+                            'instead. appDir is used to copy whole projects, ' +
+                            'where "out" with "baseUrl" is used to just ' +
+                            'optimize to one file.');
+        }
+        if (config.out && config.dir) {
+            throw new Error('The "out" and "dir" options are incompatible.' +
+                            ' Use "out" if you are targeting a single file for' +
+                            ' for optimization, and "dir" if you want the appDir' +
+                            ' or baseUrl directories optimized.');
+        }
+
+        if (config.dir) {
+            // Make sure the output dir is not set to a parent of the
+            // source dir or the same dir, as it will result in source
+            // code deletion.
+            if (config.dir === config.baseUrl ||
+                config.dir === config.appDir ||
+                (config.baseUrl && build.makeRelativeFilePath(config.dir,
+                                           config.baseUrl).indexOf('..') !== 0) ||
+                (config.appDir &&
+                    build.makeRelativeFilePath(config.dir, config.appDir).indexOf('..') !== 0)) {
+                throw new Error('"dir" is set to a parent or same directory as' +
+                                ' "appDir" or "baseUrl". This can result in' +
+                                ' the deletion of source code. Stopping.');
+            }
+        }
+
+        if (config.insertRequire && !lang.isArray(config.insertRequire)) {
+            throw new Error('insertRequire should be a list of module IDs' +
+                            ' to insert in to a require([]) call.');
+        }
+
+        if (config.generateSourceMaps) {
+            if (config.preserveLicenseComments && config.optimize !== 'none') {
+                throw new Error('Cannot use preserveLicenseComments and ' +
+                    'generateSourceMaps together. Either explcitly set ' +
+                    'preserveLicenseComments to false (default is true) or ' +
+                    'turn off generateSourceMaps. If you want source maps with ' +
+                    'license comments, see: ' +
+                    'http://requirejs.org/docs/errors.html#sourcemapcomments');
+            } else if (config.optimize !== 'none' &&
+                       config.optimize !== 'closure' &&
+                       config.optimize !== 'uglify2') {
+                //Allow optimize: none to pass, since it is useful when toggling
+                //minification on and off to debug something, and it implicitly
+                //works, since it does not need a source map.
+                throw new Error('optimize: "' + config.optimize +
+                    '" does not support generateSourceMaps.');
+            }
+        }
+
+        if ((config.name || config.include) && !config.modules) {
+            //Just need to build one file, but may be part of a whole appDir/
+            //baseUrl copy, but specified on the command line, so cannot do
+            //the modules array setup. So create a modules section in that
+            //case.
+            config.modules = [
+                {
+                    name: config.name,
+                    out: config.out,
+                    create: config.create,
+                    include: config.include,
+                    exclude: config.exclude,
+                    excludeShallow: config.excludeShallow,
+                    insertRequire: config.insertRequire,
+                    stubModules: config.stubModules
+                }
+            ];
+            delete config.stubModules;
+        } else if (config.modules && config.out) {
+            throw new Error('If the "modules" option is used, then there ' +
+                            'should be a "dir" option set and "out" should ' +
+                            'not be used since "out" is only for single file ' +
+                            'optimization output.');
+        } else if (config.modules && config.name) {
+            throw new Error('"name" and "modules" options are incompatible. ' +
+                            'Either use "name" if doing a single file ' +
+                            'optimization, or "modules" if you want to target ' +
+                            'more than one file for optimization.');
+        }
+
+        if (config.out && !config.cssIn) {
+            //Just one file to optimize.
+
+            //Does not have a build file, so set up some defaults.
+            //Optimizing CSS should not be allowed, unless explicitly
+            //asked for on command line. In that case the only task is
+            //to optimize a CSS file.
+            if (!cfg.optimizeCss) {
+                config.optimizeCss = "none";
+            }
+        }
+
+        //Normalize cssPrefix
+        if (config.cssPrefix) {
+            //Make sure cssPrefix ends in a slash
+            config.cssPrefix = endsWithSlash(config.cssPrefix);
+        } else {
+            config.cssPrefix = '';
+        }
+
+        //Cycle through modules and combine any local stubModules with
+        //global values.
+        if (config.modules && config.modules.length) {
+            config.modules.forEach(function (mod) {
+                if (config.stubModules) {
+                    mod.stubModules = config.stubModules.concat(mod.stubModules || []);
+                }
+
+                //Create a hash lookup for the stubModules config to make lookup
+                //cheaper later.
+                if (mod.stubModules) {
+                    mod.stubModules._byName = {};
+                    mod.stubModules.forEach(function (id) {
+                        mod.stubModules._byName[id] = true;
+                    });
+                }
+
+                //Allow wrap config in overrides, but normalize it.
+                if (mod.override) {
+                    normalizeWrapConfig(mod.override, absFilePath);
+                }
+            });
+        }
+
+        normalizeWrapConfig(config, absFilePath);
+
+        //Do final input verification
+        if (config.context) {
+            throw new Error('The build argument "context" is not supported' +
+                            ' in a build. It should only be used in web' +
+                            ' pages.');
+        }
+
+        //Set up normalizeDirDefines. If not explicitly set, if optimize "none",
+        //set to "skip" otherwise set to "all".
+        if (!hasProp(config, 'normalizeDirDefines')) {
+            if (config.optimize === 'none' || config.skipDirOptimize) {
+                config.normalizeDirDefines = 'skip';
+            } else {
+                config.normalizeDirDefines = 'all';
+            }
+        }
+
+        //Set file.fileExclusionRegExp if desired
+        if (hasProp(config, 'fileExclusionRegExp')) {
+            if (typeof config.fileExclusionRegExp === "string") {
+                file.exclusionRegExp = new RegExp(config.fileExclusionRegExp);
+            } else {
+                file.exclusionRegExp = config.fileExclusionRegExp;
+            }
+        } else if (hasProp(config, 'dirExclusionRegExp')) {
+            //Set file.dirExclusionRegExp if desired, this is the old
+            //name for fileExclusionRegExp before 1.0.2. Support for backwards
+            //compatibility
+            file.exclusionRegExp = config.dirExclusionRegExp;
+        }
+
+        //Remove things that may cause problems in the build.
+        delete config.jQuery;
+        delete config.enforceDefine;
+        delete config.urlArgs;
+
+        return config;
+    };
+
+    /**
+     * finds the module being built/optimized with the given moduleName,
+     * or returns null.
+     * @param {String} moduleName
+     * @param {Array} modules
+     * @returns {Object} the module object from the build profile, or null.
+     */
+    build.findBuildModule = function (moduleName, modules) {
+        var i, module;
+        for (i = 0; i < modules.length; i++) {
+            module = modules[i];
+            if (module.name === moduleName) {
+                return module;
+            }
+        }
+        return null;
+    };
+
+    /**
+     * Removes a module name and path from a layer, if it is supposed to be
+     * excluded from the layer.
+     * @param {String} moduleName the name of the module
+     * @param {String} path the file path for the module
+     * @param {Object} layer the layer to remove the module/path from
+     */
+    build.removeModulePath = function (module, path, layer) {
+        var index = layer.buildFilePaths.indexOf(path);
+        if (index !== -1) {
+            layer.buildFilePaths.splice(index, 1);
+        }
+    };
+
+    /**
+     * Uses the module build config object to trace the dependencies for the
+     * given module.
+     *
+     * @param {Object} module the module object from the build config info.
+     * @param {Object} config the build config object.
+     * @param {Object} [baseLoaderConfig] the base loader config to use for env resets.
+     *
+     * @returns {Object} layer information about what paths and modules should
+     * be in the flattened module.
+     */
+    build.traceDependencies = function (module, config, baseLoaderConfig) {
+        var include, override, layer, context, oldContext,
+            rawTextByIds,
+            syncChecks = {
+                rhino: true,
+                node: true,
+                xpconnect: true
+            },
+            deferred = prim();
+
+        //Reset some state set up in requirePatch.js, and clean up require's
+        //current context.
+        oldContext = require._buildReset();
+
+        //Grab the reset layer and context after the reset, but keep the
+        //old config to reuse in the new context.
+        layer = require._layer;
+        context = layer.context;
+
+        //Put back basic config, use a fresh object for it.
+        if (baseLoaderConfig) {
+            require(lang.deeplikeCopy(baseLoaderConfig));
+        }
+
+        logger.trace("\nTracing dependencies for: " + (module.name ||
+                     (typeof module.out === 'function' ? 'FUNCTION' : module.out)));
+        include = module.name && !module.create ? [module.name] : [];
+        if (module.include) {
+            include = include.concat(module.include);
+        }
+
+        //If there are overrides to basic config, set that up now.;
+        if (module.override) {
+            if (baseLoaderConfig) {
+                override = build.createOverrideConfig(baseLoaderConfig, module.override);
+            } else {
+                override = lang.deeplikeCopy(module.override);
+            }
+            require(override);
+        }
+
+        //Now, populate the rawText cache with any values explicitly passed in
+        //via config.
+        rawTextByIds = require.s.contexts._.config.rawText;
+        if (rawTextByIds) {
+            lang.eachProp(rawTextByIds, function (contents, id) {
+                var url = require.toUrl(id) + '.js';
+                require._cachedRawText[url] = contents;
+            });
+        }
+
+
+        //Configure the callbacks to be called.
+        deferred.reject.__requireJsBuild = true;
+
+        //Use a wrapping function so can check for errors.
+        function includeFinished(value) {
+            //If a sync build environment, check for errors here, instead of
+            //in the then callback below, since some errors, like two IDs pointed
+            //to same URL but only one anon ID will leave the loader in an
+            //unresolved state since a setTimeout cannot be used to check for
+            //timeout.
+            var hasError = false;
+            if (syncChecks[env.get()]) {
+                try {
+                    build.checkForErrors(context);
+                } catch (e) {
+                    hasError = true;
+                    deferred.reject(e);
+                }
+            }
+
+            if (!hasError) {
+                deferred.resolve(value);
+            }
+        }
+        includeFinished.__requireJsBuild = true;
+
+        //Figure out module layer dependencies by calling require to do the work.
+        require(include, includeFinished, deferred.reject);
+
+        // If a sync env, then with the "two IDs to same anon module path"
+        // issue, the require never completes, need to check for errors
+        // here.
+        if (syncChecks[env.get()]) {
+            build.checkForErrors(context);
+        }
+
+        return deferred.promise.then(function () {
+            //Reset config
+            if (module.override && baseLoaderConfig) {
+                require(lang.deeplikeCopy(baseLoaderConfig));
+            }
+
+            build.checkForErrors(context);
+
+            return layer;
+        });
+    };
+
+    build.checkForErrors = function (context) {
+        //Check to see if it all loaded. If not, then throw, and give
+        //a message on what is left.
+        var id, prop, mod, idParts, pluginId,
+            errMessage = '',
+            failedPluginMap = {},
+            failedPluginIds = [],
+            errIds = [],
+            errUrlMap = {},
+            errUrlConflicts = {},
+            hasErrUrl = false,
+            hasUndefined = false,
+            defined = context.defined,
+            registry = context.registry;
+
+        function populateErrUrlMap(id, errUrl, skipNew) {
+            if (!skipNew) {
+                errIds.push(id);
+            }
+
+            if (errUrlMap[errUrl]) {
+                hasErrUrl = true;
+                //This error module has the same URL as another
+                //error module, could be misconfiguration.
+                if (!errUrlConflicts[errUrl]) {
+                    errUrlConflicts[errUrl] = [];
+                    //Store the original module that had the same URL.
+                    errUrlConflicts[errUrl].push(errUrlMap[errUrl]);
+                }
+                errUrlConflicts[errUrl].push(id);
+            } else if (!skipNew) {
+                errUrlMap[errUrl] = id;
+            }
+        }
+
+        for (id in registry) {
+            if (hasProp(registry, id) && id.indexOf('_@r') !== 0) {
+                hasUndefined = true;
+                mod = getOwn(registry, id);
+
+                if (id.indexOf('_unnormalized') === -1 && mod && mod.enabled) {
+                    populateErrUrlMap(id, mod.map.url);
+                }
+
+                //Look for plugins that did not call load()
+                idParts = id.split('!');
+                pluginId = idParts[0];
+                if (idParts.length > 1 && falseProp(failedPluginMap, pluginId)) {
+                    failedPluginIds.push(pluginId);
+                    failedPluginMap[pluginId] = true;
+                }
+            }
+        }
+
+        // If have some modules that are not defined/stuck in the registry,
+        // then check defined modules for URL overlap.
+        if (hasUndefined) {
+            for (id in defined) {
+                if (hasProp(defined, id) && id.indexOf('!') === -1) {
+                    populateErrUrlMap(id, require.toUrl(id) + '.js', true);
+                }
+            }
+        }
+
+        if (errIds.length || failedPluginIds.length) {
+            if (failedPluginIds.length) {
+                errMessage += 'Loader plugin' +
+                    (failedPluginIds.length === 1 ? '' : 's') +
+                    ' did not call ' +
+                    'the load callback in the build: ' +
+                    failedPluginIds.join(', ') + '\n';
+            }
+            errMessage += 'Module loading did not complete for: ' + errIds.join(', ');
+
+            if (hasErrUrl) {
+                errMessage += '\nThe following modules share the same URL. This ' +
+                              'could be a misconfiguration if that URL only has ' +
+                              'one anonymous module in it:';
+                for (prop in errUrlConflicts) {
+                    if (hasProp(errUrlConflicts, prop)) {
+                        errMessage += '\n' + prop + ': ' +
+                                      errUrlConflicts[prop].join(', ');
+                    }
+                }
+            }
+            throw new Error(errMessage);
+        }
+    };
+
+    build.createOverrideConfig = function (config, override) {
+        var cfg = lang.deeplikeCopy(config),
+            oride = lang.deeplikeCopy(override);
+
+        lang.eachProp(oride, function (value, prop) {
+            if (hasProp(build.objProps, prop)) {
+                //An object property, merge keys. Start a new object
+                //so that source object in config does not get modified.
+                cfg[prop] = {};
+                lang.mixin(cfg[prop], config[prop], true);
+                lang.mixin(cfg[prop], override[prop], true);
+            } else {
+                cfg[prop] = override[prop];
+            }
+        });
+
+        return cfg;
+    };
+
+    /**
+     * Uses the module build config object to create an flattened version
+     * of the module, with deep dependencies included.
+     *
+     * @param {Object} module the module object from the build config info.
+     *
+     * @param {Object} layer the layer object returned from build.traceDependencies.
+     *
+     * @param {Object} the build config object.
+     *
+     * @returns {Object} with two properties: "text", the text of the flattened
+     * module, and "buildText", a string of text representing which files were
+     * included in the flattened module text.
+     */
+    build.flattenModule = function (module, layer, config) {
+        var fileContents, sourceMapGenerator,
+            sourceMapBase,
+            buildFileContents = '';
+
+        return prim().start(function () {
+            var reqIndex, currContents,
+                moduleName, shim, packageConfig, nonPackageName,
+                parts, builder, writeApi,
+                namespace, namespaceWithDot, stubModulesByName,
+                context = layer.context,
+                onLayerEnds = [],
+                onLayerEndAdded = {};
+
+            //Use override settings, particularly for pragmas
+            //Do this before the var readings since it reads config values.
+            if (module.override) {
+                config = build.createOverrideConfig(config, module.override);
+            }
+
+            namespace = config.namespace || '';
+            namespaceWithDot = namespace ? namespace + '.' : '';
+            stubModulesByName = (module.stubModules && module.stubModules._byName) || {};
+
+            //Start build output for the module.
+            module.onCompleteData = {
+                name: module.name,
+                path: (config.dir ? module._buildPath.replace(config.dir, "") : module._buildPath),
+                included: []
+            };
+
+            buildFileContents += "\n" +
+                                  module.onCompleteData.path +
+                                 "\n----------------\n";
+
+            //If there was an existing file with require in it, hoist to the top.
+            if (layer.existingRequireUrl) {
+                reqIndex = layer.buildFilePaths.indexOf(layer.existingRequireUrl);
+                if (reqIndex !== -1) {
+                    layer.buildFilePaths.splice(reqIndex, 1);
+                    layer.buildFilePaths.unshift(layer.existingRequireUrl);
+                }
+            }
+
+            if (config.generateSourceMaps) {
+                sourceMapBase = config.dir || config.baseUrl;
+                sourceMapGenerator = new SourceMapGenerator.SourceMapGenerator({
+                    file: module._buildPath.replace(sourceMapBase, '')
+                });
+            }
+
+            //Write the built module to disk, and build up the build output.
+            fileContents = "";
+            return prim.serial(layer.buildFilePaths.map(function (path) {
+                return function () {
+                    var lineCount,
+                        singleContents = '';
+
+                    moduleName = layer.buildFileToModule[path];
+                    //If the moduleName is for a package main, then update it to the
+                    //real main value.
+                    packageConfig = layer.context.config.pkgs &&
+                                    getOwn(layer.context.config.pkgs, moduleName);
+                    if (packageConfig) {
+                        nonPackageName = moduleName;
+                        moduleName += '/' + packageConfig.main;
+                    }
+
+                    return prim().start(function () {
+                        //Figure out if the module is a result of a build plugin, and if so,
+                        //then delegate to that plugin.
+                        parts = context.makeModuleMap(moduleName);
+                        builder = parts.prefix && getOwn(context.defined, parts.prefix);
+                        if (builder) {
+                            if (builder.onLayerEnd && falseProp(onLayerEndAdded, parts.prefix)) {
+                                onLayerEnds.push(builder);
+                                onLayerEndAdded[parts.prefix] = true;
+                            }
+
+                            if (builder.write) {
+                                writeApi = function (input) {
+                                    singleContents += "\n" + addSemiColon(input, config);
+                                    if (config.onBuildWrite) {
+                                        singleContents = config.onBuildWrite(moduleName, path, singleContents);
+                                    }
+                                };
+                                writeApi.asModule = function (moduleName, input) {
+                                    singleContents += "\n" +
+                                        addSemiColon(build.toTransport(namespace, moduleName, path, input, layer, {
+                                            useSourceUrl: layer.context.config.useSourceUrl
+                                        }), config);
+                                    if (config.onBuildWrite) {
+                                        singleContents = config.onBuildWrite(moduleName, path, singleContents);
+                                    }
+                                };
+                                builder.write(parts.prefix, parts.name, writeApi);
+                            }
+                            return;
+                        } else {
+                            return prim().start(function () {
+                                if (hasProp(stubModulesByName, moduleName)) {
+                                    //Just want to insert a simple module definition instead
+                                    //of the source module. Useful for plugins that inline
+                                    //all their resources.
+                                    if (hasProp(layer.context.plugins, moduleName)) {
+                                        //Slightly different content for plugins, to indicate
+                                        //that dynamic loading will not work.
+                                        return 'define({load: function(id){throw new Error("Dynamic load not allowed: " + id);}});';
+                                    } else {
+                                        return 'define({});';
+                                    }
+                                } else {
+                                    return require._cacheReadAsync(path);
+                                }
+                            }).then(function (text) {
+                                var hasPackageName;
+
+                                currContents = text;
+
+                                if (config.cjsTranslate &&
+                                    (!config.shim || !lang.hasProp(config.shim, moduleName))) {
+                                    currContents = commonJs.convert(path, currContents);
+                                }
+
+                                if (config.onBuildRead) {
+                                    currContents = config.onBuildRead(moduleName, path, currContents);
+                                }
+
+                                if (packageConfig) {
+                                    hasPackageName = (nonPackageName === parse.getNamedDefine(currContents));
+                                }
+
+                                if (namespace) {
+                                    currContents = pragma.namespace(currContents, namespace);
+                                }
+
+                                currContents = build.toTransport(namespace, moduleName, path, currContents, layer, {
+                                    useSourceUrl: config.useSourceUrl
+                                });
+
+                                if (packageConfig && !hasPackageName) {
+                                    currContents = addSemiColon(currContents, config) + '\n';
+                                    currContents += namespaceWithDot + "define('" +
+                                                    packageConfig.name + "', ['" + moduleName +
+                                                    "'], function (main) { return main; });\n";
+                                }
+
+                                if (config.onBuildWrite) {
+                                    currContents = config.onBuildWrite(moduleName, path, currContents);
+                                }
+
+                                //Semicolon is for files that are not well formed when
+                                //concatenated with other content.
+                                singleContents += "\n" + addSemiColon(currContents, config);
+                            });
+                        }
+                    }).then(function () {
+                        var refPath, pluginId, resourcePath,
+                            sourceMapPath, sourceMapLineNumber,
+                            shortPath = path.replace(config.dir, "");
+
+                        module.onCompleteData.included.push(shortPath);
+                        buildFileContents += shortPath + "\n";
+
+                        //Some files may not have declared a require module, and if so,
+                        //put in a placeholder call so the require does not try to load them
+                        //after the module is processed.
+                        //If we have a name, but no defined module, then add in the placeholder.
+                        if (moduleName && falseProp(layer.modulesWithNames, moduleName) && !config.skipModuleInsertion) {
+                            shim = config.shim && (getOwn(config.shim, moduleName) || (packageConfig && getOwn(config.shim, nonPackageName)));
+                            if (shim) {
+                                singleContents += '\n' + namespaceWithDot + 'define("' + moduleName + '", ' +
+                                                 (shim.deps && shim.deps.length ?
+                                                        build.makeJsArrayString(shim.deps) + ', ' : '') +
+                                                 (shim.exportsFn ? shim.exportsFn() : 'function(){}') +
+                                                 ');\n';
+                            } else {
+                                singleContents += '\n' + namespaceWithDot + 'define("' + moduleName + '", function(){});\n';
+                            }
+                        }
+
+                        //Add to the source map
+                        if (sourceMapGenerator) {
+                            refPath = config.out ? config.baseUrl : module._buildPath;
+                            parts = path.split('!');
+                            if (parts.length === 1) {
+                                //Not a plugin resource, fix the path
+                                sourceMapPath = build.makeRelativeFilePath(refPath, path);
+                            } else {
+                                //Plugin resource. If it looks like just a plugin
+                                //followed by a module ID, pull off the plugin
+                                //and put it at the end of the name, otherwise
+                                //just leave it alone.
+                                pluginId = parts.shift();
+                                resourcePath = parts.join('!');
+                                if (resourceIsModuleIdRegExp.test(resourcePath)) {
+                                    sourceMapPath = build.makeRelativeFilePath(refPath, require.toUrl(resourcePath)) +
+                                                    '!' + pluginId;
+                                } else {
+                                    sourceMapPath = path;
+                                }
+                            }
+
+                            sourceMapLineNumber = fileContents.split('\n').length - 1;
+                            lineCount = singleContents.split('\n').length;
+                            for (var i = 1; i <= lineCount; i += 1) {
+                                sourceMapGenerator.addMapping({
+                                    generated: {
+                                        line: sourceMapLineNumber + i,
+                                        column: 0
+                                    },
+                                    original: {
+                                        line: i,
+                                        column: 0
+                                    },
+                                    source: sourceMapPath
+                                });
+                            }
+
+                            //Store the content of the original in the source
+                            //map since other transforms later like minification
+                            //can mess up translating back to the original
+                            //source.
+                            sourceMapGenerator.setSourceContent(sourceMapPath, singleContents);
+                        }
+
+                        //Add the file to the final contents
+                        fileContents += singleContents;
+                    });
+                };
+            })).then(function () {
+                if (onLayerEnds.length) {
+                    onLayerEnds.forEach(function (builder) {
+                        var path;
+                        if (typeof module.out === 'string') {
+                            path = module.out;
+                        } else if (typeof module._buildPath === 'string') {
+                            path = module._buildPath;
+                        }
+                        builder.onLayerEnd(function (input) {
+                            fileContents += "\n" + addSemiColon(input, config);
+                        }, {
+                            name: module.name,
+                            path: path
+                        });
+                    });
+                }
+
+                if (module.create) {
+                    //The ID is for a created layer. Write out
+                    //a module definition for it in case the
+                    //built file is used with enforceDefine
+                    //(#432)
+                    fileContents += '\n' + namespaceWithDot + 'define("' + module.name + '", function(){});\n';
+                }
+
+                //Add a require at the end to kick start module execution, if that
+                //was desired. Usually this is only specified when using small shim
+                //loaders like almond.
+                if (module.insertRequire) {
+                    fileContents += '\n' + namespaceWithDot + 'require(["' + module.insertRequire.join('", "') + '"]);\n';
+                }
+            });
+        }).then(function () {
+            return {
+                text: config.wrap ?
+                        config.wrap.start + fileContents + config.wrap.end :
+                        fileContents,
+                buildText: buildFileContents,
+                sourceMap: sourceMapGenerator ?
+                              JSON.stringify(sourceMapGenerator.toJSON(), null, '  ') :
+                              undefined
+            };
+        });
+    };
+
+    //Converts an JS array of strings to a string representation.
+    //Not using JSON.stringify() for Rhino's sake.
+    build.makeJsArrayString = function (ary) {
+        return '["' + ary.map(function (item) {
+            //Escape any double quotes, backslashes
+            return lang.jsEscape(item);
+        }).join('","') + '"]';
+    };
+
+    build.toTransport = function (namespace, moduleName, path, contents, layer, options) {
+        var baseUrl = layer && layer.context.config.baseUrl;
+
+        function onFound(info) {
+            //Only mark this module as having a name if not a named module,
+            //or if a named module and the name matches expectations.
+            if (layer && (info.needsId || info.foundId === moduleName)) {
+                layer.modulesWithNames[moduleName] = true;
+            }
+        }
+
+        //Convert path to be a local one to the baseUrl, useful for
+        //useSourceUrl.
+        if (baseUrl) {
+            path = path.replace(baseUrl, '');
+        }
+
+        return transform.toTransport(namespace, moduleName, path, contents, onFound, options);
+    };
+
+    return build;
+});
+
+    }
+
+
+    /**
+     * Sets the default baseUrl for requirejs to be directory of top level
+     * script.
+     */
+    function setBaseUrl(fileName) {
+        //Use the file name's directory as the baseUrl if available.
+        dir = fileName.replace(/\\/g, '/');
+        if (dir.indexOf('/') !== -1) {
+            dir = dir.split('/');
+            dir.pop();
+            dir = dir.join('/');
+            //Make sure dir is JS-escaped, since it will be part of a JS string.
+            exec("require({baseUrl: '" + dir.replace(/[\\"']/g, '\\$&') + "'});");
+        }
+    }
+
+    function createRjsApi() {
+        //Create a method that will run the optimzer given an object
+        //config.
+        requirejs.optimize = function (config, callback, errback) {
+            if (!loadedOptimizedLib) {
+                loadLib();
+                loadedOptimizedLib = true;
+            }
+
+            //Create the function that will be called once build modules
+            //have been loaded.
+            var runBuild = function (build, logger, quit) {
+                //Make sure config has a log level, and if not,
+                //make it "silent" by default.
+                config.logLevel = config.hasOwnProperty('logLevel') ?
+                                  config.logLevel : logger.SILENT;
+
+                //Reset build internals first in case this is part
+                //of a long-running server process that could have
+                //exceptioned out in a bad state. It is only defined
+                //after the first call though.
+                if (requirejs._buildReset) {
+                    requirejs._buildReset();
+                    requirejs._cacheReset();
+                }
+
+                function done(result) {
+                    //And clean up, in case something else triggers
+                    //a build in another pathway.
+                    if (requirejs._buildReset) {
+                        requirejs._buildReset();
+                        requirejs._cacheReset();
+                    }
+
+                    // Ensure errors get propagated to the errback
+                    if (result instanceof Error) {
+                      throw result;
+                    }
+
+                    return result;
+                }
+
+                errback = errback || function (err) {
+                    // Using console here since logger may have
+                    // turned off error logging. Since quit is
+                    // called want to be sure a message is printed.
+                    console.log(err);
+                    quit(1);
+                };
+
+                build(config).then(done, done).then(callback, errback);
+            };
+
+            requirejs({
+                context: 'build'
+            }, ['build', 'logger', 'env!env/quit'], runBuild);
+        };
+
+        requirejs.tools = {
+            useLib: function (contextName, callback) {
+                if (!callback) {
+                    callback = contextName;
+                    contextName = 'uselib';
+                }
+
+                if (!useLibLoaded[contextName]) {
+                    loadLib();
+                    useLibLoaded[contextName] = true;
+                }
+
+                var req = requirejs({
+                    context: contextName
+                });
+
+                req(['build'], function () {
+                    callback(req);
+                });
+            }
+        };
+
+        requirejs.define = define;
+    }
+
+    //If in Node, and included via a require('requirejs'), just export and
+    //THROW IT ON THE GROUND!
+    if (env === 'node' && reqMain !== module) {
+        setBaseUrl(path.resolve(reqMain ? reqMain.filename : '.'));
+
+        createRjsApi();
+
+        module.exports = requirejs;
+        return;
+    } else if (env === 'browser') {
+        //Only option is to use the API.
+        setBaseUrl(location.href);
+        createRjsApi();
+        return;
+    } else if ((env === 'rhino' || env === 'xpconnect') &&
+            //User sets up requirejsAsLib variable to indicate it is loaded
+            //via load() to be used as a library.
+            typeof requirejsAsLib !== 'undefined' && requirejsAsLib) {
+        //This script is loaded via rhino's load() method, expose the
+        //API and get out.
+        setBaseUrl(fileName);
+        createRjsApi();
+        return;
+    }
+
+    if (commandOption === 'o') {
+        //Do the optimizer work.
+        loadLib();
+
+        /**
+ * @license Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+
+/*
+ * Create a build.js file that has the build options you want and pass that
+ * build file to this file to do the build. See example.build.js for more information.
+ */
+
+/*jslint strict: false, nomen: false */
+/*global require: false */
+
+require({
+    baseUrl: require.s.contexts._.config.baseUrl,
+    //Use a separate context than the default context so that the
+    //build can use the default context.
+    context: 'build',
+    catchError: {
+        define: true
+    }
+},       ['env!env/args', 'env!env/quit', 'logger', 'build'],
+function (args, quit, logger, build) {
+    build(args).then(function () {}, function (err) {
+        logger.error(err);
+        quit(1);
+    });
+});
+
+
+    } else if (commandOption === 'v') {
+        console.log('r.js: ' + version +
+                    ', RequireJS: ' + this.requirejsVars.require.version +
+                    ', UglifyJS2: 2.4.0, UglifyJS: 1.3.4');
+    } else if (commandOption === 'convert') {
+        loadLib();
+
+        this.requirejsVars.require(['env!env/args', 'commonJs', 'env!env/print'],
+            function (args, commonJs, print) {
+
+                var srcDir, outDir;
+                srcDir = args[0];
+                outDir = args[1];
+
+                if (!srcDir || !outDir) {
+                    print('Usage: path/to/commonjs/modules output/dir');
+                    return;
+                }
+
+                commonJs.convertDir(args[0], args[1]);
+            });
+    } else {
+        //Just run an app
+
+        //Load the bundled libraries for use in the app.
+        if (commandOption === 'lib') {
+            loadLib();
+        }
+
+        setBaseUrl(fileName);
+
+        if (exists(fileName)) {
+            exec(readFile(fileName), fileName);
+        } else {
+            showHelp();
+        }
+    }
+
+}((typeof console !== 'undefined' ? console : undefined),
+    (typeof Packages !== 'undefined' || (typeof window === 'undefined' &&
+        typeof Components !== 'undefined' && Components.interfaces) ?
+        Array.prototype.slice.call(arguments, 0) : []),
+    (typeof readFile !== 'undefined' ? readFile : undefined)));
diff --git a/services/chat/public/js/text.js b/services/chat/public/js/text.js
new file mode 100644
index 0000000000..ac42cb1ca4
--- /dev/null
+++ b/services/chat/public/js/text.js
@@ -0,0 +1,373 @@
+/**
+ * @license RequireJS text 2.0.7 Copyright (c) 2010-2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/requirejs/text for details
+ */
+/*jslint regexp: true */
+/*global require, XMLHttpRequest, ActiveXObject,
+  define, window, process, Packages,
+  java, location, Components, FileUtils */
+
+define(['module'], function (module) {
+    'use strict';
+
+    var text, fs, Cc, Ci,
+        progIds = ['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0'],
+        xmlRegExp = /^\s*<\?xml(\s)+version=[\'\"](\d)*.(\d)*[\'\"](\s)*\?>/im,
+        bodyRegExp = /<body[^>]*>\s*([\s\S]+)\s*<\/body>/im,
+        hasLocation = typeof location !== 'undefined' && location.href,
+        defaultProtocol = hasLocation && location.protocol && location.protocol.replace(/\:/, ''),
+        defaultHostName = hasLocation && location.hostname,
+        defaultPort = hasLocation && (location.port || undefined),
+        buildMap = {},
+        masterConfig = (module.config && module.config()) || {};
+
+    text = {
+        version: '2.0.7',
+
+        strip: function (content) {
+            //Strips <?xml ...?> declarations so that external SVG and XML
+            //documents can be added to a document without worry. Also, if the string
+            //is an HTML document, only the part inside the body tag is returned.
+            if (content) {
+                content = content.replace(xmlRegExp, "");
+                var matches = content.match(bodyRegExp);
+                if (matches) {
+                    content = matches[1];
+                }
+            } else {
+                content = "";
+            }
+            return content;
+        },
+
+        jsEscape: function (content) {
+            return content.replace(/(['\\])/g, '\\$1')
+                .replace(/[\f]/g, "\\f")
+                .replace(/[\b]/g, "\\b")
+                .replace(/[\n]/g, "\\n")
+                .replace(/[\t]/g, "\\t")
+                .replace(/[\r]/g, "\\r")
+                .replace(/[\u2028]/g, "\\u2028")
+                .replace(/[\u2029]/g, "\\u2029");
+        },
+
+        createXhr: masterConfig.createXhr || function () {
+            //Would love to dump the ActiveX crap in here. Need IE 6 to die first.
+            var xhr, i, progId;
+            if (typeof XMLHttpRequest !== "undefined") {
+                return new XMLHttpRequest();
+            } else if (typeof ActiveXObject !== "undefined") {
+                for (i = 0; i < 3; i += 1) {
+                    progId = progIds[i];
+                    try {
+                        xhr = new ActiveXObject(progId);
+                    } catch (e) {}
+
+                    if (xhr) {
+                        progIds = [progId];  // so faster next time
+                        break;
+                    }
+                }
+            }
+
+            return xhr;
+        },
+
+        /**
+         * Parses a resource name into its component parts. Resource names
+         * look like: module/name.ext!strip, where the !strip part is
+         * optional.
+         * @param {String} name the resource name
+         * @returns {Object} with properties "moduleName", "ext" and "strip"
+         * where strip is a boolean.
+         */
+        parseName: function (name) {
+            var modName, ext, temp,
+                strip = false,
+                index = name.indexOf("."),
+                isRelative = name.indexOf('./') === 0 ||
+                             name.indexOf('../') === 0;
+
+            if (index !== -1 && (!isRelative || index > 1)) {
+                modName = name.substring(0, index);
+                ext = name.substring(index + 1, name.length);
+            } else {
+                modName = name;
+            }
+
+            temp = ext || modName;
+            index = temp.indexOf("!");
+            if (index !== -1) {
+                //Pull off the strip arg.
+                strip = temp.substring(index + 1) === "strip";
+                temp = temp.substring(0, index);
+                if (ext) {
+                    ext = temp;
+                } else {
+                    modName = temp;
+                }
+            }
+
+            return {
+                moduleName: modName,
+                ext: ext,
+                strip: strip
+            };
+        },
+
+        xdRegExp: /^((\w+)\:)?\/\/([^\/\\]+)/,
+
+        /**
+         * Is an URL on another domain. Only works for browser use, returns
+         * false in non-browser environments. Only used to know if an
+         * optimized .js version of a text resource should be loaded
+         * instead.
+         * @param {String} url
+         * @returns Boolean
+         */
+        useXhr: function (url, protocol, hostname, port) {
+            var uProtocol, uHostName, uPort,
+                match = text.xdRegExp.exec(url);
+            if (!match) {
+                return true;
+            }
+            uProtocol = match[2];
+            uHostName = match[3];
+
+            uHostName = uHostName.split(':');
+            uPort = uHostName[1];
+            uHostName = uHostName[0];
+
+            return (!uProtocol || uProtocol === protocol) &&
+                   (!uHostName || uHostName.toLowerCase() === hostname.toLowerCase()) &&
+                   ((!uPort && !uHostName) || uPort === port);
+        },
+
+        finishLoad: function (name, strip, content, onLoad) {
+            content = strip ? text.strip(content) : content;
+            if (masterConfig.isBuild) {
+                buildMap[name] = content;
+            }
+            onLoad(content);
+        },
+
+        load: function (name, req, onLoad, config) {
+            //Name has format: some.module.filext!strip
+            //The strip part is optional.
+            //if strip is present, then that means only get the string contents
+            //inside a body tag in an HTML string. For XML/SVG content it means
+            //removing the <?xml ...?> declarations so the content can be inserted
+            //into the current doc without problems.
+
+            // Do not bother with the work if a build and text will
+            // not be inlined.
+            if (config.isBuild && !config.inlineText) {
+                onLoad();
+                return;
+            }
+
+            masterConfig.isBuild = config.isBuild;
+
+            var parsed = text.parseName(name),
+                nonStripName = parsed.moduleName +
+                    (parsed.ext ? '.' + parsed.ext : ''),
+                url = req.toUrl(nonStripName),
+                useXhr = (masterConfig.useXhr) ||
+                         text.useXhr;
+
+            //Load the text. Use XHR if possible and in a browser.
+            if (!hasLocation || useXhr(url, defaultProtocol, defaultHostName, defaultPort)) {
+                text.get(url, function (content) {
+                    text.finishLoad(name, parsed.strip, content, onLoad);
+                }, function (err) {
+                    if (onLoad.error) {
+                        onLoad.error(err);
+                    }
+                });
+            } else {
+                //Need to fetch the resource across domains. Assume
+                //the resource has been optimized into a JS module. Fetch
+                //by the module name + extension, but do not include the
+                //!strip part to avoid file system issues.
+                req([nonStripName], function (content) {
+                    text.finishLoad(parsed.moduleName + '.' + parsed.ext,
+                                    parsed.strip, content, onLoad);
+                });
+            }
+        },
+
+        write: function (pluginName, moduleName, write, config) {
+            if (buildMap.hasOwnProperty(moduleName)) {
+                var content = text.jsEscape(buildMap[moduleName]);
+                write.asModule(pluginName + "!" + moduleName,
+                               "define(function () { return '" +
+                                   content +
+                               "';});\n");
+            }
+        },
+
+        writeFile: function (pluginName, moduleName, req, write, config) {
+            var parsed = text.parseName(moduleName),
+                extPart = parsed.ext ? '.' + parsed.ext : '',
+                nonStripName = parsed.moduleName + extPart,
+                //Use a '.js' file name so that it indicates it is a
+                //script that can be loaded across domains.
+                fileName = req.toUrl(parsed.moduleName + extPart) + '.js';
+
+            //Leverage own load() method to load plugin value, but only
+            //write out values that do not have the strip argument,
+            //to avoid any potential issues with ! in file names.
+            text.load(nonStripName, req, function (value) {
+                //Use own write() method to construct full module value.
+                //But need to create shell that translates writeFile's
+                //write() to the right interface.
+                var textWrite = function (contents) {
+                    return write(fileName, contents);
+                };
+                textWrite.asModule = function (moduleName, contents) {
+                    return write.asModule(moduleName, fileName, contents);
+                };
+
+                text.write(pluginName, nonStripName, textWrite, config);
+            }, config);
+        }
+    };
+
+    if (masterConfig.env === 'node' || (!masterConfig.env &&
+            typeof process !== "undefined" &&
+            process.versions &&
+            !!process.versions.node)) {
+        //Using special require.nodeRequire, something added by r.js.
+        fs = require.nodeRequire('fs');
+
+        text.get = function (url, callback, errback) {
+            try {
+                var file = fs.readFileSync(url, 'utf8');
+                //Remove BOM (Byte Mark Order) from utf8 files if it is there.
+                if (file.indexOf('\uFEFF') === 0) {
+                    file = file.substring(1);
+                }
+                callback(file);
+            } catch (e) {
+                errback(e);
+            }
+        };
+    } else if (masterConfig.env === 'xhr' || (!masterConfig.env &&
+            text.createXhr())) {
+        text.get = function (url, callback, errback, headers) {
+            var xhr = text.createXhr(), header;
+            xhr.open('GET', url, true);
+
+            //Allow plugins direct access to xhr headers
+            if (headers) {
+                for (header in headers) {
+                    if (headers.hasOwnProperty(header)) {
+                        xhr.setRequestHeader(header.toLowerCase(), headers[header]);
+                    }
+                }
+            }
+
+            //Allow overrides specified in config
+            if (masterConfig.onXhr) {
+                masterConfig.onXhr(xhr, url);
+            }
+
+            xhr.onreadystatechange = function (evt) {
+                var status, err;
+                //Do not explicitly handle errors, those should be
+                //visible via console output in the browser.
+                if (xhr.readyState === 4) {
+                    status = xhr.status;
+                    if (status > 399 && status < 600) {
+                        //An http 4xx or 5xx error. Signal an error.
+                        err = new Error(url + ' HTTP status: ' + status);
+                        err.xhr = xhr;
+                        errback(err);
+                    } else {
+                        callback(xhr.responseText);
+                    }
+
+                    if (masterConfig.onXhrComplete) {
+                        masterConfig.onXhrComplete(xhr, url);
+                    }
+                }
+            };
+            xhr.send(null);
+        };
+    } else if (masterConfig.env === 'rhino' || (!masterConfig.env &&
+            typeof Packages !== 'undefined' && typeof java !== 'undefined')) {
+        //Why Java, why is this so awkward?
+        text.get = function (url, callback) {
+            var stringBuffer, line,
+                encoding = "utf-8",
+                file = new java.io.File(url),
+                lineSeparator = java.lang.System.getProperty("line.separator"),
+                input = new java.io.BufferedReader(new java.io.InputStreamReader(new java.io.FileInputStream(file), encoding)),
+                content = '';
+            try {
+                stringBuffer = new java.lang.StringBuffer();
+                line = input.readLine();
+
+                // Byte Order Mark (BOM) - The Unicode Standard, version 3.0, page 324
+                // http://www.unicode.org/faq/utf_bom.html
+
+                // Note that when we use utf-8, the BOM should appear as "EF BB BF", but it doesn't due to this bug in the JDK:
+                // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4508058
+                if (line && line.length() && line.charAt(0) === 0xfeff) {
+                    // Eat the BOM, since we've already found the encoding on this file,
+                    // and we plan to concatenating this buffer with others; the BOM should
+                    // only appear at the top of a file.
+                    line = line.substring(1);
+                }
+
+                if (line !== null) {
+                    stringBuffer.append(line);
+                }
+
+                while ((line = input.readLine()) !== null) {
+                    stringBuffer.append(lineSeparator);
+                    stringBuffer.append(line);
+                }
+                //Make sure we return a JavaScript string and not a Java string.
+                content = String(stringBuffer.toString()); //String
+            } finally {
+                input.close();
+            }
+            callback(content);
+        };
+    } else if (masterConfig.env === 'xpconnect' || (!masterConfig.env &&
+            typeof Components !== 'undefined' && Components.classes &&
+            Components.interfaces)) {
+        //Avert your gaze!
+        Cc = Components.classes,
+        Ci = Components.interfaces;
+        Components.utils['import']('resource://gre/modules/FileUtils.jsm');
+
+        text.get = function (url, callback) {
+            var inStream, convertStream,
+                readData = {},
+                fileObj = new FileUtils.File(url);
+
+            //XPCOM, you so crazy
+            try {
+                inStream = Cc['@mozilla.org/network/file-input-stream;1']
+                           .createInstance(Ci.nsIFileInputStream);
+                inStream.init(fileObj, 1, 0, false);
+
+                convertStream = Cc['@mozilla.org/intl/converter-input-stream;1']
+                                .createInstance(Ci.nsIConverterInputStream);
+                convertStream.init(inStream, "utf-8", inStream.available(),
+                Ci.nsIConverterInputStream.DEFAULT_REPLACEMENT_CHARACTER);
+
+                convertStream.readString(inStream.available(), readData);
+                convertStream.close();
+                inStream.close();
+                callback(readData.value);
+            } catch (e) {
+                throw new Error((fileObj && fileObj.path || '') + ': ' + e);
+            }
+        };
+    }
+    return text;
+});
diff --git a/services/chat/public/less/chat.less b/services/chat/public/less/chat.less
new file mode 100644
index 0000000000..af6ce96ff1
--- /dev/null
+++ b/services/chat/public/less/chat.less
@@ -0,0 +1,198 @@
+@border-color: #999;
+
+.chat-window {
+	border-bottom: none;
+	position: absolute;
+	bottom: 0px;
+	right: 10px;
+	height: 260px;
+	width: 220px;
+	background-color: white;
+	z-index: 10;
+
+	.header {
+		h3 {
+			background-color: rgb(40,40,40);
+			border: 1px solid #222;
+			border-bottom: none;
+			color: white;
+			font-size: 12px;
+			line-height: 12px;
+			padding: 4px 6px 5px;
+			font-weight: normal;
+			cursor: pointer;
+		}
+
+		position: relative;
+		.window-controls {
+			position: absolute;
+			top: 0px;
+			right: 4px;
+			bottom: 0px;
+			color: white;
+			cursor: pointer;
+			&:hover {
+				background-color: black;
+			}
+			.minimize-toggle {
+				width: 12px;
+				height: 100%;
+				padding: 0 4px;
+				background-repeat: no-repeat;
+				background-position: 4px center;
+				background-image: url(data:image/png;base64,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);
+			}
+		}
+
+		.new-message-alert {
+			display: none;
+			cursor: pointer;
+			position: absolute;
+			padding: 4px;
+			top: -16px;
+			left: 35px;
+			background-color: red;
+			color: white;
+			font-weight: bold;
+			padding: 1px 6px;
+			-moz-border-radius: 3px;
+			-webkit-border-radius: 3px;
+			border-radius: 3px;
+			&:after {
+				border: 3px solid red;
+				border-right: 3px solid transparent;
+				border-bottom: 3px solid transparent;
+				content: '';
+				position: absolute;
+				left: 6px;
+				bottom: -6px;
+			}
+		}
+	}
+
+	.connected-users {
+		font-size: 10px;
+		padding: 4px;
+		background-color: #ddd;
+		border: 1px solid @border-color;
+		border-top: none;
+	}
+
+	.sent-message-area {
+		border: 1px solid @border-color;
+		border-top: none;
+		border-bottom: none;
+		position: absolute;
+		top: 22px;
+		bottom: 28px;
+		left: 0px;
+		right: 0px;
+		font-size: 12px;
+		font-family: arial, san-serif;
+		overflow-y: scroll;
+
+	
+
+		.chat-block {
+			position: relative;
+			padding-top: 4px;
+			padding-bottom: 4px;
+
+			.message-block {
+				min-height: 40px;
+				margin-bottom: 5px;
+			}
+
+			.timeSinceMessage {
+				color: @border-color;
+				text-align:center;
+				padding-bottom: 8px;
+			}
+
+			.avatar {
+				float: left;
+				width: 44px;
+				height: 44px;
+			}
+			.name {
+				font-weight: bold;
+				color: #999;
+				margin-top: 0;
+			}
+			.message {
+				margin: 3px;
+			}
+		}
+
+		a.load-older-messages {
+			padding: 10px;
+			background-color: #eee;
+			text-align:center;
+			display: block;
+			&:hover {
+				background-color: #ddd;
+			}
+		}
+	}
+
+	@new-message-area-height: 27px;
+	@new-message-area-padding-top: 3px;
+	.new-message-area {
+		position: absolute;
+		bottom: 0px;
+		height: @new-message-area-height;
+		left: 0px;
+		right: 0px;
+
+		border: 1px solid @border-color;
+		border-bottom: none;
+
+		textarea {
+			height: @new-message-area-height - 2 * @new-message-area-padding-top;
+			width: 212px;
+			border: none;
+			padding: @new-message-area-padding-top;
+			margin: 0;
+			resize: none;
+			font-size: 12px;
+			font-family: arial, san-serif;
+			color: #333;
+		}
+	}
+
+}
+
+.chat-window.disconnected {
+	.sent-message-area {
+		opacity: 0.6;
+	}
+}
+
+.chat-window.new-messages {
+	.header {
+		h3 {
+			background-color: #049cdb;
+			border-color: darken(#049cdb, 10%);
+		}
+
+		.new-message-alert {
+			display: block;
+		}
+
+		.window-controls {
+			&:hover {
+				background-color: darken(#049cdb, 10%);
+			}
+		}
+	}
+}
+
+.chat-window.minimized {
+	.header {
+		.window-controls {
+			.minimize-toggle {
+				background-image: url(data:image/png;base64,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);
+			}
+		}
+	}
+}
diff --git a/services/chat/rakefile.rb b/services/chat/rakefile.rb
new file mode 100644
index 0000000000..54d2e011fc
--- /dev/null
+++ b/services/chat/rakefile.rb
@@ -0,0 +1,124 @@
+namespace "run" do
+end
+
+namespace "test" do
+	desc "Run the unit tests"
+	task :unit => ["compile:unittests"] do
+		puts "Running unit tests"
+		featurePath = ENV['feature']
+		puts featurePath
+		if featurePath.nil?
+			featurePath = ''
+		elsif featurePath.include? '/'
+		elsif !featurePath.include? '/'
+			featurePath +='/'
+		else
+			featurePath = ''
+		end
+		runner = ENV['MOCHA_RUNNER'] || "spec"
+		sh %{mocha -R #{runner} test/unit/js/#{featurePath}* --ignore-leaks} do |ok, res|
+			if ! ok
+				raise "error running unit tests : #{res}"
+			end
+		end
+		
+	end
+end
+
+namespace "compile" do
+	desc "Compile server and client coffeescript files"
+	task :app => ["compile:serverApp", "compile:clientApp"]
+
+	desc "Compile the main serverside app folder"
+	task :serverApp do
+		puts "Compiling app"
+		sh %{coffee -o app/js/ -c app/coffee/} do |ok, res|
+			if ! ok
+				raise "error compiling app folder: #{res}"
+			end
+			puts 'Finished server app compile'
+		end
+		sh %{coffee -c app.coffee} do |ok, res|
+			if ! ok
+				raise "error compiling app file: #{res}"
+			end
+			puts 'Finished app.coffee compile'
+		end
+	end
+
+	desc "Compile the main client app folder"
+	task :clientApp do
+		puts "Compiling client app"
+		sh %{coffee -o public/js/ -c public/coffee/} do |ok, res|
+			if ! ok
+				raise "error compiling client app folder: #{res}"
+			end
+		end
+		sh %{mkdir -p public/js/html}
+		sh %{mkdir -p public/js/css}
+		sh %{jade < public/jade/templates.jade > public/js/html/templates.html} do |ok, res|
+			if !ok
+				raise "error compiling jade templates: #{res}"
+			end
+		end
+		sh %{lessc - < public/less/chat.less > public/js/css/chat.css} do |ok, res|
+			if !ok
+				raise "error compiling css: #{res}"
+			end
+		end
+	end
+
+	desc "compress the js"
+	task :compressAndCompileJs do
+		sh %{node public/js/r.js -o public/app.build.js} do |ok, res|
+			if ! ok
+				raise "error compiling client app folder: #{res}"
+			end
+		end
+		puts "Finished client app compile"
+	end
+
+	desc "Compile the unit tests folder"
+	task :unittests => ["compile:serverApp"] do
+		puts "Compiling Unit Tests to JS"
+		sh %{coffee -c -o test/unit/js/ test/unit/coffee/} do |ok, res|
+			if ! ok
+				raise "error compiling Unit tests : #{res}"
+			end
+		end
+	end
+end
+
+namespace 'bootstrap' do
+	desc "Creates a new Feature and module, and corresponding test framework file"
+	task :feature, :feature_name, :module_name do |task, args|
+		feature_name = args[:feature_name]
+		module_name  = args[:module_name]
+		FileUtils.mkdir_p("app/coffee/Features/#{feature_name}")
+		File.open("app/coffee/Features/#{feature_name}/#{module_name}.coffee", "w") { |f|
+			f.write(<<-EOS
+module.exports = #{module_name} =
+			EOS
+			)
+		}
+		FileUtils.mkdir_p("test/unit/coffee/#{feature_name}")
+		File.open("test/unit/coffee/#{feature_name}/#{module_name}Tests.coffee", "w") { |f|
+			f.write(<<-EOS
+sinon = require('sinon')
+chai = require('chai')
+should = chai.should()
+expect = chai.expect
+modulePath = "../../../../app/js/Features/#{feature_name}/#{module_name}.js"
+SandboxedModule = require('sandboxed-module')
+events = require "events"
+
+
+describe "#{module_name}", ->
+	beforeEach ->
+		@#{module_name} = SandboxedModule.require modulePath, requires:
+
+			EOS
+			)
+		}
+	end
+end
diff --git a/services/chat/test/unit/coffee/Authentication/AuthenticationControllerTests.coffee b/services/chat/test/unit/coffee/Authentication/AuthenticationControllerTests.coffee
new file mode 100644
index 0000000000..d9457e183f
--- /dev/null
+++ b/services/chat/test/unit/coffee/Authentication/AuthenticationControllerTests.coffee
@@ -0,0 +1,71 @@
+sinon = require('sinon')
+chai = require('chai')
+should = chai.should()
+expect = chai.expect
+modulePath = "../../../../app/js/Features/Authentication/AuthenticationController.js"
+SandboxedModule = require('sandboxed-module')
+
+describe "AuthenticationController", ->
+	beforeEach ->
+		@AuthenticationController = SandboxedModule.require modulePath, requires:
+			"../WebApi/WebApiManager": @WebApiManager = {}
+			"../Users/UserFormatter": @UserFormatter = {}
+			"logger-sharelatex": @logger = { log: sinon.stub() }
+		@callback = sinon.stub()
+
+	describe "authClient", ->
+		beforeEach ->
+			@auth_token = "super-secret-auth-token"
+			@client =
+				params: {}
+				set: (key, value, callback) ->
+					@params[key] = value
+					callback()
+			@user =
+				id: "user-id-123"
+				email: "doug@sharelatex.com"
+				first_name: "Douglas"
+				last_name: "Adams"
+			@WebApiManager.getUserDetailsFromAuthToken = sinon.stub().callsArgWith(1, null, @user)
+			@UserFormatter.formatUserForClientSide = sinon.stub().returns({
+				id: @user.id
+				first_name: @user.first_name
+				last_name: @user.last_name
+				email: @user.email
+				gravatar_url: "//gravatar/url"
+			})
+			@AuthenticationController.authClient(@client, auth_token: @auth_token, @callback)
+
+		it "should get the user's data from the web api", ->
+			@WebApiManager.getUserDetailsFromAuthToken
+				.calledWith(@auth_token)
+				.should.equal true
+
+		it "should set the user's data and auth_token on the client object", ->
+			@client.params.should.deep.equal {
+				id: @user.id
+				first_name: @user.first_name
+				last_name: @user.last_name
+				email: @user.email
+				gravatar_url: "//gravatar/url"
+				auth_token: @auth_token
+			}
+
+		it "should call the callback with the user details (including the gravatar URL, but not the auth_token)", ->
+			@callback
+				.calledWith(null, {
+					id: @user.id
+					email: @user.email
+					first_name: @user.first_name
+					last_name: @user.last_name
+					gravatar_url: "//gravatar/url"
+				}).should.equal true
+
+		it "should log the request", ->
+			@logger.log
+				.calledWith(auth_token: @auth_token, "authenticating user")
+				.should.equal true
+			@logger.log
+				.calledWith(user: @user, auth_token: @auth_token, "authenticated user")
+				.should.equal true
+
diff --git a/services/chat/test/unit/coffee/Authorization/AuthorizationManagerTests.coffee b/services/chat/test/unit/coffee/Authorization/AuthorizationManagerTests.coffee
new file mode 100644
index 0000000000..8f2f76716c
--- /dev/null
+++ b/services/chat/test/unit/coffee/Authorization/AuthorizationManagerTests.coffee
@@ -0,0 +1,55 @@
+sinon = require('sinon')
+chai = require('chai')
+should = chai.should()
+expect = chai.expect
+modulePath = "../../../../app/js/Features/Authorization/AuthorizationManager.js"
+SandboxedModule = require('sandboxed-module')
+events = require "events"
+
+describe "AuthorizationManager", ->
+	beforeEach ->
+		@SocketManager = {}
+		@AuthorizationManager = SandboxedModule.require modulePath, requires:
+			"../WebApi/WebApiManager": @WebApiManager = {}
+			"../Sockets/SocketManager": @SocketManager
+		@callback = sinon.stub()
+		@user_id = "user-id-123"
+		@project_id = "project-id-456"
+		@auth_token = "auth-token-789"
+		@client =
+			params: {}
+			get: (key, callback = (error, value) ->) ->
+				callback null, @params[key]
+
+	describe "canClientJoinProjectRoom", ->
+		beforeEach ->
+			@client.params.auth_token = @auth_token
+			@client.params.id = @user_id
+			
+		describe "when the client is a collaborator", ->
+			beforeEach ->
+				@collaborators = [
+					id: @user_id
+				]
+				@WebApiManager.getProjectCollaborators = sinon.stub().callsArgWith(2, null, @collaborators)
+				@AuthorizationManager.canClientJoinProjectRoom(@client, @project_id, @callback)
+
+			it "should get the list of collaborators from the web api", ->
+				@WebApiManager.getProjectCollaborators
+					.calledWith(@project_id, @auth_token)
+					.should.equal true
+
+			it "should return true", ->
+				@callback.calledWith(null, true).should.equal true
+
+		describe "when the client is not a collaborator", ->
+			beforeEach ->
+				@collaborators = [
+					id: "not the user id"
+				]
+				@WebApiManager.getProjectCollaborators = sinon.stub().callsArgWith(2, null, @collaborators)
+				@AuthorizationManager.canClientJoinProjectRoom(@client, @project_id, @callback)
+
+			it "should return false", ->
+				@callback.calledWith(null, false).should.equal true
+
diff --git a/services/chat/test/unit/coffee/Messages/MessageControllerTests.coffee b/services/chat/test/unit/coffee/Messages/MessageControllerTests.coffee
new file mode 100644
index 0000000000..9518e56b92
--- /dev/null
+++ b/services/chat/test/unit/coffee/Messages/MessageControllerTests.coffee
@@ -0,0 +1,187 @@
+sinon = require('sinon')
+chai = require('chai')
+should = chai.should()
+expect = chai.expect
+modulePath = "../../../../app/js/Features/Messages/MessageController.js"
+SandboxedModule = require('sandboxed-module')
+events = require "events"
+tk = require "timekeeper"
+ObjectId = require("mongojs").ObjectId
+
+describe "MessageController", ->
+	beforeEach ->
+		tk.freeze(new Date())
+		@MessageController = SandboxedModule.require modulePath, requires:
+			"./MessageManager": @MessageManager = {}
+			"./MessageFormatter": @MessageFormatter = {}
+			"../Sockets/SocketManager": @SocketManager = {}
+			"../Authorization/AuthorizationManager": @AuthorizationManager = {}
+			"logger-sharelatex": @logger = { log: sinon.stub() }
+			"../../metrics": @metrics = {inc: sinon.stub()}
+		@callback = sinon.stub()
+		@client =
+			params:
+				id: @user_id = "user-id-123"
+				first_name: @first_name = "Douglas"
+				last_name: @last_name = "Adams"
+				email: @email = "doug@sharelatex.com"
+				gravatar_url: @gravatar_url = "//gravatar/url"
+			get: (key, callback = (error, value) ->) -> callback null, @params[key]
+	
+	afterEach ->
+		tk.reset()
+
+	describe "sendMessage", ->
+		beforeEach ->
+			@MessageManager.createMessage = sinon.stub().callsArg(1)
+			@SocketManager.emitToRoom = sinon.stub()
+			@singlePopulatedMessage = {data:"here"}
+			@formattedMessage = {formatted:true}
+			@MessageFormatter.formatMessageForClientSide = sinon.stub().returns(@formattedMessage)
+			@MessageManager.populateMessagesWithUsers = sinon.stub().callsArgWith(1, null, [@singlePopulatedMessage])
+			@SocketManager.getClientAttributes = (client, attributes, callback) ->
+				values = (client.params[key] for key in attributes)
+				callback null, values
+
+		describe "when the client is authorized to send a message to the room", ->
+			beforeEach ->
+				@AuthorizationManager.canClientSendMessageToRoom = sinon.stub().callsArgWith(2, null, true)
+				@MessageController.sendMessage(@client, {
+					message:
+						content: @content = "Hello world"
+					room:
+						id: @room_id = "room-id-123"
+				}, @callback)
+
+			it "should check that the client can send a message to the room", ->
+				@AuthorizationManager.canClientSendMessageToRoom
+					.calledWith(@client, @room_id)
+					.should.equal true
+
+			it "should insert the message into the database", ->
+				@MessageManager.createMessage
+					.calledWith({
+						content: @content
+						user_id: @user_id
+						room_id: @room_id
+						timestamp: Date.now()
+					})
+					.should.equal true
+
+
+			it "should format the message for the client", ->
+				@MessageFormatter.formatMessageForClientSide.calledWith(@singlePopulatedMessage).should.equal true
+
+			it "should send the formatted message out to the other clients in the room", ->
+				@SocketManager.emitToRoom.calledWith(@room_id, "messageReceived", message:@formattedMessage).should.equal true
+
+			it "should record the message as a metric", ->
+				@metrics.inc
+					.calledWith("editor.instant-message")
+					.should.equal true
+
+			it "should call the callback", ->
+				@callback.called.should.equal true
+
+		describe "when the client is not authorized", ->
+			beforeEach ->
+				@AuthorizationManager.canClientSendMessageToRoom = sinon.stub().callsArgWith(2, null, false)
+				@MessageController.sendMessage(@client, {
+					message:
+						content: @content = "Hello world"
+					room:
+						id: @room_id = "room-id-123"
+				}, @callback)
+
+			it "should not insert the message into the database", ->
+				@MessageManager.createMessage.called.should.equal false
+				
+			it "should not send the message out to the other clients in the room", ->
+				@SocketManager.emitToRoom.called.should.equal false
+
+			it "should call the callback with an error that doesn't give anything away", ->
+				@callback.calledWith("unknown room").should.equal true
+
+	describe "getMessage", ->
+		beforeEach ->
+			@room_id = "room-id-123"
+			@timestamp = Date.now()
+			@limit = 42
+
+		describe "when the client is authorized", ->
+			beforeEach ->
+				@messages = "messages without users stub"
+				@messagesWithUsers = "messages with users stub"
+				@formattedMessages = "formatted messages stub"
+				@MessageManager.getMessages = sinon.stub().callsArgWith(2, null, @messages)
+				@MessageManager.populateMessagesWithUsers = sinon.stub().callsArgWith(1, null, @messagesWithUsers)
+				@AuthorizationManager.canClientReadMessagesInRoom = sinon.stub().callsArgWith(2, null, true)
+				@MessageFormatter.formatMessagesForClientSide = sinon.stub().returns @formattedMessages
+
+			describe "with a timestamp and limit", ->
+				beforeEach ->
+					@MessageController.getMessages(@client, {
+						room:
+							id: @room_id,
+						before: @timestamp,
+						limit: @limit
+					}, @callback)
+
+				it "should get the requested messages", ->
+					@MessageManager.getMessages
+						.calledWith({
+							timestamp: $lt: @timestamp
+							room_id: @room_id
+						}, {
+							limit: @limit
+							order_by: "timestamp"
+							sort_order: -1
+						})
+						.should.equal true
+
+				it "should populate the messages with the users", ->
+					@MessageManager.populateMessagesWithUsers
+						.calledWith(@messages)
+						.should.equal true
+
+				it "should return the formatted messages", ->
+					@MessageFormatter.formatMessagesForClientSide
+						.calledWith(@messagesWithUsers)
+						.should.equal true
+
+				it "should call the callback with the formatted messages", ->
+					@callback
+						.calledWith(null, @formattedMessages)
+						.should.equal true
+
+			describe "without a timestamp or limit", ->
+				beforeEach ->
+					@MessageController.getMessages(@client, {
+						room:
+							id: @room_id,
+					}, @callback)
+				
+				it "should get a default number of messages from the beginning", ->
+					@MessageManager.getMessages
+						.calledWith({
+							room_id: @room_id
+						}, {
+							limit: @MessageController.DEFAULT_MESSAGE_LIMIT
+							order_by: "timestamp"
+							sort_order: -1
+						})
+						.should.equal true
+
+		describe "when the client is not authorized", ->
+			beforeEach ->
+				@AuthorizationManager.canClientReadMessagesInRoom = sinon.stub().callsArgWith(2, null, false)
+				@MessageController.getMessages(@client, {
+					room:
+						id: @room_id,
+					before: @timestamp,
+					limit: @limit
+				}, @callback)
+
+			it "should call the callback with an error", ->
+				@callback.calledWith("unknown room").should.equal true
+				
diff --git a/services/chat/test/unit/coffee/Messages/MessageFormatterTests.coffee b/services/chat/test/unit/coffee/Messages/MessageFormatterTests.coffee
new file mode 100644
index 0000000000..96060f31e4
--- /dev/null
+++ b/services/chat/test/unit/coffee/Messages/MessageFormatterTests.coffee
@@ -0,0 +1,13 @@
+sinon = require('sinon')
+chai = require('chai')
+should = chai.should()
+expect = chai.expect
+modulePath = "../../../../app/js/Features/Messages/MessageFormatter.js"
+SandboxedModule = require('sandboxed-module')
+events = require "events"
+ObjectId = require("mongojs").ObjectId
+
+describe "MessageFormatter", ->
+	beforeEach ->
+		@MessageFormatter = SandboxedModule.require modulePath, requires: {}
+
diff --git a/services/chat/test/unit/coffee/Messages/MessageHttpControllerTests.coffee b/services/chat/test/unit/coffee/Messages/MessageHttpControllerTests.coffee
new file mode 100644
index 0000000000..1c84531a2e
--- /dev/null
+++ b/services/chat/test/unit/coffee/Messages/MessageHttpControllerTests.coffee
@@ -0,0 +1,173 @@
+should = require('chai').should()
+SandboxedModule = require('sandboxed-module')
+assert = require('assert')
+path = require('path')
+sinon = require('sinon')
+modulePath = path.join __dirname, "../../../../app/js/Features/Messages/MessageHttpController"
+expect = require("chai").expect
+tk = require("timekeeper")
+
+describe "MessagesHttpController", ->
+
+	beforeEach ->
+
+		@settings = {}
+		@date = Date.now()
+		tk.freeze(@date)
+		@MessagesHttpController = SandboxedModule.require modulePath, requires:
+			"settings-sharelatex":@settings
+			"logger-sharelatex": log:->
+			"./MessageManager": @MessageManager = {}
+			"./MessageFormatter": @MessageFormatter = {}
+			"../Rooms/RoomManager": @RoomManager = {}
+
+		@req = 
+			body:{}
+		@res = {}
+		@project_id = "12321321"
+		@room_id = "Asdfadf adfafd"
+		@user_id = "09832910838239081203981"
+		@content = "my message here"
+
+
+	afterEach ->
+		tk.reset()
+
+	describe "sendMessage", ->
+
+		beforeEach ->
+			@initialMessage = {content:@content}
+			@MessageManager.createMessage = sinon.stub().callsArgWith(1, null, @initialMessage)
+			@req.params =
+				project_id:@project_id
+			@req.body =
+				user_id:@user_id
+				content:@content
+			@singlePopulatedMessage = {data:"here"}
+			@MessageManager.populateMessagesWithUsers = sinon.stub().callsArgWith(1, null, [@singlePopulatedMessage])
+			@RoomManager.findOrCreateRoom = sinon.stub().callsArgWith(1, null, @room = { _id : @room_id })
+			@formattedMessage = {formatted:true}
+			@MessageFormatter.formatMessageForClientSide = sinon.stub().returns(@formattedMessage)
+
+		it "should look up the room for the project", ->
+			@res.send = =>
+				@RoomManager.findOrCreateRoom
+					.calledWith({
+						project_id: @project_id
+					})
+					.should.equal true
+				done()
+
+		it "should create the message with the message manager", (done)->
+			@res.send = =>
+				@MessageManager.createMessage
+					.calledWith({
+						content: @content
+						user_id: @user_id
+						room_id: @room_id
+						timestamp: @date
+					})
+					.should.equal true
+				done()
+			@MessagesHttpController.sendMessage @req, @res
+
+
+		it "should return the formetted message", (done)->
+
+			@res.send = (code, data)=>
+				assert.deepEqual @MessageManager.populateMessagesWithUsers.args[0][0], [@initialMessage]
+				code.should.equal 201
+				data.should.equal @formattedMessage
+				done()
+
+			@MessagesHttpController.sendMessage @req, @res
+
+
+	describe "getMessages", ->
+
+		beforeEach ->
+			@project_id = "room-id-123"
+			@timestamp = Date.now()
+			@limit = 42
+
+			@messages = "messages without users stub"
+			@messagesWithUsers = "messages with users stub"
+			@formattedMessages = "formatted messages stub"
+			@RoomManager.findOrCreateRoom = sinon.stub().callsArgWith(1, null, @room = { _id : @room_id })
+			@MessageManager.getMessages = sinon.stub().callsArgWith(2, null, @messages)
+			@MessageManager.populateMessagesWithUsers = sinon.stub().callsArgWith(1, null, @messagesWithUsers)
+			@MessageFormatter.formatMessagesForClientSide = sinon.stub().returns @formattedMessages
+
+
+		describe "with a timestamp and limit", ->
+			beforeEach ->
+				@req.params =
+					project_id:@project_id
+				@req.query = 
+					before: @timestamp,
+					limit: "#{@limit}"
+					
+					
+			it "should look up the room for the project", ->
+				@res.send = =>
+					@RoomManager.findOrCreateRoom
+						.calledWith({
+							project_id: @project_id
+						})
+						.should.equal true
+					done()
+
+			it "should get the requested messages", ->
+				@res.send = =>
+					@MessageManager.getMessages
+						.calledWith({
+							timestamp: $lt: @timestamp
+							room_id: @room_id
+						}, {
+							limit: @limit
+							order_by: "timestamp"
+							sort_order: -1
+						})
+						.should.equal true
+				
+				@MessagesHttpController.getMessages(@req, @res)
+
+			it "should populate the messages with the users", (done)->
+				@res.send = =>
+					@MessageManager.populateMessagesWithUsers.calledWith(@messages).should.equal true
+					done()
+
+				@MessagesHttpController.getMessages(@req, @res)
+
+			it "should return the formatted messages", (done)->
+				@res.send = ()=>
+					@MessageFormatter.formatMessagesForClientSide.calledWith(@messagesWithUsers).should.equal true
+					done()
+				@MessagesHttpController.getMessages(@req, @res)
+
+			it "should send the formated messages back with a 200", (done)->
+				@res.send = (code, data)=>
+					code.should.equal 200
+					data.should.equal @formattedMessages
+					done()
+				@MessagesHttpController.getMessages(@req, @res)
+
+		describe "without a timestamp or limit", ->
+			beforeEach ->
+				@req.params =
+					project_id:@project_id
+
+			
+			it "should get a default number of messages from the beginning", ->
+				@res.send = =>
+					@MessageManager.getMessages
+						.calledWith({
+							room_id: @room_id
+						}, {
+							limit: @MessagesHttpController.DEFAULT_MESSAGE_LIMIT
+							order_by: "timestamp"
+							sort_order: -1
+						})
+						.should.equal true
+
+				@MessagesHttpController.getMessages(@req, @res)
diff --git a/services/chat/test/unit/coffee/Messages/MessageManagerTests.coffee b/services/chat/test/unit/coffee/Messages/MessageManagerTests.coffee
new file mode 100644
index 0000000000..5743a758f5
--- /dev/null
+++ b/services/chat/test/unit/coffee/Messages/MessageManagerTests.coffee
@@ -0,0 +1,60 @@
+sinon = require('sinon')
+chai = require('chai')
+should = chai.should()
+expect = chai.expect
+modulePath = "../../../../app/js/Features/Messages/MessageManager.js"
+SandboxedModule = require('sandboxed-module')
+events = require "events"
+ObjectId = require("mongojs").ObjectId
+
+describe "MessageManager", ->
+	beforeEach ->
+		@MessageManager = SandboxedModule.require modulePath, requires:
+			"../WebApi/WebApiManager": @WebApiManager = {}
+		@callback = sinon.stub()
+
+	describe "populateMessagesWithUsers", ->
+		beforeEach ->
+			@user0 =
+				id: ObjectId().toString()
+				first_name: "Adam"
+			@user1 =
+				id: ObjectId().toString()
+				first_name: "Eve"
+			@users = {}
+			@users[@user0.id] = @user0
+			@users[@user1.id] = @user1
+			@messages = [{
+				content: "First message content"
+				user_id: ObjectId(@user0.id)
+			}, {
+				content: "Second message content"
+				user_id: ObjectId(@user0.id)
+			}, {
+				content: "Third message content"
+				user_id: ObjectId(@user1.id)
+			}]
+			@WebApiManager.getUserDetails = (user_id, callback = (error, user) ->) =>
+				callback null, @users[user_id]
+			sinon.spy @WebApiManager, "getUserDetails"
+			@MessageManager.populateMessagesWithUsers @messages, @callback
+
+		it "should insert user objects in the place of user_ids", ->
+			messages = @callback.args[0][1]
+			expect(messages).to.deep.equal [{
+				content: "First message content"
+				user: @user0
+			}, {
+				content: "Second message content"
+				user: @user0
+			}, {
+				content: "Third message content"
+				user: @user1
+			}]
+
+		it "should call getUserDetails once and only once for each user", ->
+			@WebApiManager.getUserDetails.calledWith(@user0.id).should.equal true
+			@WebApiManager.getUserDetails.calledWith(@user1.id).should.equal true
+			@WebApiManager.getUserDetails.calledTwice.should.equal true
+			
+
diff --git a/services/chat/test/unit/coffee/Rooms/RoomControllerTests.coffee b/services/chat/test/unit/coffee/Rooms/RoomControllerTests.coffee
new file mode 100644
index 0000000000..987ef736aa
--- /dev/null
+++ b/services/chat/test/unit/coffee/Rooms/RoomControllerTests.coffee
@@ -0,0 +1,240 @@
+sinon = require('sinon')
+chai = require('chai')
+should = chai.should()
+expect = chai.expect
+modulePath = "../../../../app/js/Features/Rooms/RoomController.js"
+SandboxedModule = require('sandboxed-module')
+events = require "events"
+ObjectId = require("mongojs").ObjectId
+
+class MockClient
+	params: {}
+	get: (key, callback = (error, value) ->) ->
+		callback null, @params[key]
+
+describe "RoomController", ->
+	beforeEach ->
+		@SocketManager =
+			getClientAttributes: sinon.stub()
+
+
+		@RoomController = SandboxedModule.require modulePath, requires:
+			"../Authorization/AuthorizationManager": @AuthorizationManager = {}
+			"../Sockets/SocketManager": @SocketManager
+			"../Rooms/RoomManager": @RoomManager = {}
+			"logger-sharelatex": @logger = { log: sinon.stub() }
+
+
+		@project_id = ObjectId().toString()
+		@room_id = ObjectId().toString()
+		@room =
+			_id: ObjectId(@room_id)
+			project_id: ObjectId(@project_id)
+		@callback = sinon.stub()
+		@client =
+			params: {}
+			get: (key, callback = (error, value) ->) -> callback null, @params[key]
+
+	describe "joinRoom", ->
+		describe "when the client is authorized", ->
+			beforeEach ->
+				@AuthorizationManager.canClientJoinProjectRoom = sinon.stub().callsArgWith(2, null, true)
+				@RoomManager.findOrCreateRoom = sinon.stub().callsArgWith(1, null, @room)
+				@RoomController._addClientToRoom = sinon.stub().callsArg(2)
+				@RoomController._getClientsInRoom = sinon.stub().callsArgWith(1, null, @clients = ["client1", "client2"])
+				@RoomController.joinRoom @client, { room: project_id: @project_id }, @callback
+
+			it "should check that the client can join the room", ->
+				@AuthorizationManager.canClientJoinProjectRoom
+					.calledWith(@client, @project_id)
+					.should.equal true
+
+			it "should ensure that the room exists", ->
+				@RoomManager.findOrCreateRoom
+					.calledWith({ project_id: @project_id })
+					.should.equal true
+
+			it "should put the client into the room", ->
+				@RoomController._addClientToRoom
+					.calledWith(@client, @room_id)
+					.should.equal true
+
+			it "should get the clients already in the room", ->
+				@RoomController._getClientsInRoom
+					.calledWith(@room_id)
+					.should.equal true
+
+			it "should call the callback with the room id", ->
+				@callback.calledWith(null, {
+					room:
+						id: @room_id
+						connectedUsers: @clients
+				}).should.equal true
+
+		describe "when the client is not authorized", ->
+			beforeEach ->
+				@AuthorizationManager.canClientJoinProjectRoom = sinon.stub().callsArgWith(2, null, false)
+				@RoomController._addClientToRoom = sinon.stub().callsArg(2)
+				@RoomController.joinRoom @client, { room: project_id: @project_id }, @callback
+
+			it "should not put the client into the room", ->
+				@RoomController._addClientToRoom.called.should.equal false
+
+			it "should call the callback with an error that gives nothing away", ->
+				@callback.calledWith("unknown room").should.equal true
+
+	describe "leaveAllRooms", ->
+
+		beforeEach ->
+			@client = new MockClient()
+			@client.params =
+				id: "client-1-id"
+				first_name: "Douglas"
+				last_name: "Adams"
+				email: "doug@sharelatex.com"
+				gravatar_url: "//gravatar/url/1"
+			@room_ids = ["room-id-1", "room-id-2"]
+			@SocketManager.getRoomIdsClientHasJoined = sinon.stub().callsArgWith(1, null, @room_ids)
+			@RoomController.leaveRoom = sinon.stub().callsArg(2)
+			@RoomController.leaveAllRooms @client, @callback
+
+		it "should get the rooms the client has joined", ->
+			@SocketManager.getRoomIdsClientHasJoined
+				.calledWith(@client)
+				.should.equal true
+
+		it "should leave each room", ->
+			for room_id in @room_ids
+				@RoomController.leaveRoom
+					.calledWith(@client, room_id)
+					.should.equal true
+
+		it "should call the callback", ->
+			@callback.called.should.equal true
+
+	describe "leaveRoom", ->
+		beforeEach ->
+			@client = new MockClient()
+			@client.params =
+				id: "client-1-id"
+				first_name: "Douglas"
+				last_name: "Adams"
+				email: "doug@sharelatex.com"
+				gravatar_url: "//gravatar/url/1"
+			@RoomController._getClientAttributes = sinon.stub().callsArgWith(1, null, @client.params)
+
+			@SocketManager.removeClientFromRoom = sinon.stub().callsArg(2)
+			@SocketManager.emitToRoom = sinon.stub()
+			@RoomController.leaveRoom @client, @room_id, @callback
+
+		it "should leave the room", ->
+			@SocketManager.removeClientFromRoom
+				.calledWith(@client, @room_id)
+				.should.equal true
+
+		it "should tell the other clients in the room that we have left", ->
+			@SocketManager.emitToRoom
+				.calledWith(@room_id, "userLeft", {
+					room:
+						id: @room_id
+					user:
+						id           : @client.params["id"]
+						first_name   : @client.params["first_name"]
+						last_name    : @client.params["last_name"]
+						email        : @client.params["email"]
+						gravatar_url : @client.params["gravatar_url"]
+				})
+				.should.equal true
+
+		it "should call the callback", ->
+			@callback.called.should.equal true
+
+	describe "_getClientsInRoom", ->
+		beforeEach ->
+			@client1 = new MockClient()
+			@client1.params =
+				id: "client-1-id"
+				first_name: "Douglas"
+				last_name: "Adams"
+				email: "doug@sharelatex.com"
+				gravatar_url: "//gravatar/url/1"
+			@client2 = new MockClient()
+			@client2.params =
+				id: "client-2-id"
+				first_name: "James"
+				last_name: "Allen"
+				email: "james@sharelatex.com"
+				gravatar_url: "//gravatar/url/2"
+			@clients = [ @client1, @client2 ]
+			callCount = 0
+			
+			@RoomController._getClientAttributes = (ignore, cb)=>
+				if callCount == 0
+					callCount++
+					cb(null, @client1.params)
+				else
+					cb null, @client2.params
+
+
+			@SocketManager.getClientsInRoom = sinon.stub().callsArgWith(1, null, @clients)
+			@RoomController._getClientsInRoom(@room_id, @callback)
+
+		it "should get the socket.io clients in the room", ->
+			@SocketManager.getClientsInRoom
+				.calledWith(@room_id)
+				.should.equal true
+
+		it "should return a formatted array of clients", ->
+			@callback
+				.calledWith(null, [{
+					id           : @client1.params["id"]
+					first_name   : @client1.params["first_name"]
+					last_name    : @client1.params["last_name"]
+					email        : @client1.params["email"]
+					gravatar_url : @client1.params["gravatar_url"]
+				}, {
+					id           : @client2.params["id"]
+					first_name   : @client2.params["first_name"]
+					last_name    : @client2.params["last_name"]
+					email        : @client2.params["email"]
+					gravatar_url : @client2.params["gravatar_url"]
+				}])
+				.should.equal true
+
+	describe "_addClientToRoom", ->
+		beforeEach ->
+			@client = new MockClient()
+			@client.params =
+				id: "client-1-id"
+				first_name: "Douglas"
+				last_name: "Adams"
+				email: "doug@sharelatex.com"
+				gravatar_url: "//gravatar/url/1"
+			@RoomController._getClientAttributes = sinon.stub().callsArgWith(1, null, @client.params)
+			@SocketManager.addClientToRoom = sinon.stub().callsArg(2)
+			@SocketManager.emitToRoom = sinon.stub()
+			@RoomController._addClientToRoom(@client, @room_id, @callback)
+
+		it "should add the client to the room", ->
+			@SocketManager.addClientToRoom
+				.calledWith(@client, @room_id)
+				.should.equal true
+
+		it "should tell the room that the client has been added", ->
+			@SocketManager.emitToRoom
+				.calledWith(@room_id, "userJoined", {
+					room:
+						id: @room_id
+					user:
+						id           : @client.params["id"]
+						first_name   : @client.params["first_name"]
+						last_name    : @client.params["last_name"]
+						email        : @client.params["email"]
+						gravatar_url : @client.params["gravatar_url"]
+				})
+				.should.equal true
+
+		it "should call the callback", ->
+			@callback.called.should.equal true
+
+
diff --git a/services/chat/test/unit/coffee/Rooms/RoomManagerTests.coffee b/services/chat/test/unit/coffee/Rooms/RoomManagerTests.coffee
new file mode 100644
index 0000000000..2f786b4cad
--- /dev/null
+++ b/services/chat/test/unit/coffee/Rooms/RoomManagerTests.coffee
@@ -0,0 +1,58 @@
+sinon = require('sinon')
+chai = require('chai')
+should = chai.should()
+expect = chai.expect
+modulePath = "../../../../app/js/Features/Rooms/RoomManager.js"
+SandboxedModule = require('sandboxed-module')
+events = require "events"
+mongojs = require "mongojs"
+ObjectId = mongojs.ObjectId
+
+describe "RoomManager", ->
+	beforeEach ->
+		@RoomManager = SandboxedModule.require modulePath, requires:
+			"../../mongojs":
+				db: @db = { rooms: {} }
+				ObjectId: ObjectId
+		@callback = sinon.stub()
+
+	describe "findOrCreateRoom", ->
+		describe "when the room exists", ->
+			beforeEach ->
+				@project_id = ObjectId().toString()
+				@room =
+					_id: ObjectId()
+					project_id: ObjectId(@project_id)
+				@db.rooms.findOne = sinon.stub().callsArgWith(1, null, @room)
+				@RoomManager.findOrCreateRoom(project_id: @project_id, @callback)
+
+			it "should look up the room based on the query", ->
+				@db.rooms.findOne
+					.calledWith(project_id: ObjectId(@project_id))
+					.should.equal true
+
+			it "should return the room in the callback", ->
+				@callback
+					.calledWith(null, @room)
+					.should.equal true
+
+		describe "when the room does not exist", ->
+			beforeEach ->
+				@project_id = ObjectId().toString()
+				@room =
+					_id: ObjectId()
+					project_id: ObjectId(@project_id)
+				@db.rooms.findOne = sinon.stub().callsArgWith(1, null, null)
+				@db.rooms.save = sinon.stub().callsArgWith(1, null, @room)
+				@RoomManager.findOrCreateRoom(project_id: @project_id, @callback)
+				
+			it "should create the room", ->
+				@db.rooms.save
+					.calledWith(project_id: ObjectId(@project_id))
+					.should.equal true
+
+			it "should return the room in the callback", ->
+				@callback
+					.calledWith(null, @room)
+					.should.equal true
+
diff --git a/services/chat/test/unit/coffee/Sockets/RealTimeEventManagerTests.coffee b/services/chat/test/unit/coffee/Sockets/RealTimeEventManagerTests.coffee
new file mode 100644
index 0000000000..11364482fb
--- /dev/null
+++ b/services/chat/test/unit/coffee/Sockets/RealTimeEventManagerTests.coffee
@@ -0,0 +1,75 @@
+SandboxedModule = require('sandboxed-module')
+sinon = require('sinon')
+require('chai').should()
+modulePath = "../../../../app/js/Features/Sockets/RealTimeEventManager.js"
+
+describe "RealTimeEventManager", ->
+
+	beforeEach ->
+		@settings = 
+			redis:
+				web:
+					host: "host here"
+					port: "port here"
+					password: "password here"
+		@RealTimeEventManager = SandboxedModule.require modulePath, requires:
+			"redis": 
+				createClient: () ->
+					auth:->
+			"../../server" : io: @io = {}
+			"settings-sharelatex":@settings
+		@RealTimeEventManager.rclientPub = publish: sinon.stub()
+		@RealTimeEventManager.rclientSub =
+			subscribe: sinon.stub()
+			on: sinon.stub()
+		
+		@room_id = "room-id-here"
+		@message = "message-to-chat-here"
+		@payload = ["argument one", 42]
+
+	describe "emitToRoom", ->
+		beforeEach ->
+			@RealTimeEventManager.emitToRoom(@room_id, @message, @payload...)
+
+		it "should publish the message to redis", ->
+			@RealTimeEventManager.rclientPub.publish
+				.calledWith("chat-events", JSON.stringify(
+					room_id: @room_id,
+					message: @message
+					payload: @payload
+				))
+				.should.equal true
+			
+	describe "listenForChatEvents", ->
+		beforeEach ->
+			@RealTimeEventManager._processEditorEvent = sinon.stub()
+			@RealTimeEventManager.listenForChatEvents()
+
+		it "should subscribe to the chat-events channel", ->
+			@RealTimeEventManager.rclientSub.subscribe
+				.calledWith("chat-events")
+				.should.equal true
+
+		it "should process the events with _processEditorEvent", ->
+			@RealTimeEventManager.rclientSub.on
+				.calledWith("message", sinon.match.func)
+				.should.equal true
+
+	describe "_processEditorEvent", ->
+		describe "with a designated room", ->
+			beforeEach ->
+				@io.sockets =
+					in: sinon.stub().returns(emit: @emit = sinon.stub())
+				data = JSON.stringify
+					room_id: @room_id
+					message: @message
+					payload: @payload
+				@RealTimeEventManager._processEditorEvent("chat-events", data)
+
+			it "should send the message to all clients in the room", ->
+				@io.sockets.in
+					.calledWith(@room_id)
+					.should.equal true
+				@emit.calledWith(@message, @payload...).should.equal true
+
+		
\ No newline at end of file
diff --git a/services/chat/test/unit/coffee/Users/UserFormatterTests.coffee b/services/chat/test/unit/coffee/Users/UserFormatterTests.coffee
new file mode 100644
index 0000000000..c6e331c9a8
--- /dev/null
+++ b/services/chat/test/unit/coffee/Users/UserFormatterTests.coffee
@@ -0,0 +1,12 @@
+sinon = require('sinon')
+chai = require('chai')
+should = chai.should()
+expect = chai.expect
+modulePath = "../../../../app/js/Features/Users/UserFormatter.js"
+SandboxedModule = require('sandboxed-module')
+events = require "events"
+
+describe "UserFormatter", ->
+	beforeEach ->
+		@UserFormatter = SandboxedModule.require modulePath, requires: {}
+