text: /**
   * QUnit v1.7.0pre - A JavaScript Unit Testing Framework
   *
   * http://docs.jquery.com/QUnit
   *
   * Copyright (c) 2012 John Resig, Jörn Zaefferer
   * Dual licensed under the MIT (MIT-LICENSE.txt)
   * or GPL (GPL-LICENSE.txt) licenses.
   */
  
  (function( window ) {
  
  var QUnit,
  	config,
  	testId = 0,
  	toString = Object.prototype.toString,
  	hasOwn = Object.prototype.hasOwnProperty,
  	defined = {
  	setTimeout: typeof window.setTimeout !== "undefined",
  	sessionStorage: (function() {
  		var x = "qunit-test-string";
  		try {
  			sessionStorage.setItem( x, x );
  			sessionStorage.removeItem( x );
  			return true;
  		} catch( e ) {
  			return false;
  		}
  	}())
  };
  
  function Test( name, testName, expected, async, callback ) {
  	this.name = name;
  	this.testName = testName;
  	this.expected = expected;
  	this.async = async;
  	this.callback = callback;
  	this.assertions = [];
  }
  
  Test.prototype = {
  	init: function() {
  		var a, b, li,
          tests = id( "qunit-tests" );
  
  		if ( tests ) {
  			b = document.createElement( "strong" );
  			b.innerHTML = this.name;
  
  			// `a` initialized at top of scope
  			a = document.createElement( "a" );
  			a.innerHTML = "Rerun";
  			a.href = QUnit.url({ filter: getText([b]).replace( /\([^)]+\)$/, "" ).replace( /(^\s*|\s*$)/g, "" ) });
  
  			li = document.createElement( "li" );
  			li.appendChild( b );
  			li.appendChild( a );
  			li.className = "running";
  			li.id = this.id = "qunit-test-output" + testId++;
  
  			tests.appendChild( li );
  		}
  	},
  	setup: function() {
  		if ( this.module !== config.previousModule ) {
  			if ( config.previousModule ) {
  				runLoggingCallbacks( "moduleDone", QUnit, {
  					name: config.previousModule,
  					failed: config.moduleStats.bad,
  					passed: config.moduleStats.all - config.moduleStats.bad,
  					total: config.moduleStats.all
  				});
  			}
  			config.previousModule = this.module;
  			config.moduleStats = { all: 0, bad: 0 };
  			runLoggingCallbacks( "moduleStart", QUnit, {
  				name: this.module
  			});
  		} else if ( config.autorun ) {
  			runLoggingCallbacks( "moduleStart", QUnit, {
  				name: this.module
  			});
  		}
  
  		config.current = this;
  
  		this.testEnvironment = extend({
  			setup: function() {},
  			teardown: function() {}
  		}, this.moduleTestEnvironment );
  
  		runLoggingCallbacks( "testStart", QUnit, {
  			name: this.testName,
  			module: this.module
  		});
  
  		// allow utility functions to access the current test environment
  		// TODO why??
  		QUnit.current_testEnvironment = this.testEnvironment;
  
  		if ( !config.pollution ) {
  			saveGlobal();
  		}
  		if ( config.notrycatch ) {
  			this.testEnvironment.setup.call( this.testEnvironment );
  			return;
  		}
  		try {
  			this.testEnvironment.setup.call( this.testEnvironment );
  		} catch( e ) {
  			QUnit.pushFailure( "Setup failed on " + this.testName + ": " + e.message, extractStacktrace( e, 1 ) );
  		}
  	},
  	run: function() {
  		config.current = this;
  
  		var running = id( "qunit-testresult" );
  
  		if ( running ) {
  			running.innerHTML = "Running: <br/>" + this.name;
  		}
  
  		if ( this.async ) {
  			QUnit.stop();
  		}
  
  		if ( config.notrycatch ) {
  			this.callback.call( this.testEnvironment );
  			return;
  		}
  
  		try {
  			this.callback.call( this.testEnvironment );
  		} catch( e ) {
  			QUnit.pushFailure( "Died on test #" + (this.assertions.length + 1) + ": " + e.message, extractStacktrace( e, 1 ) );
  			// else next test will carry the responsibility
  			saveGlobal();
  
  			// Restart the tests if they're blocking
  			if ( config.blocking ) {
  				QUnit.start();
  			}
  		}
  	},
  	teardown: function() {
  		config.current = this;
  		if ( config.notrycatch ) {
  			this.testEnvironment.teardown.call( this.testEnvironment );
  			return;
  		} else {
  			try {
  				this.testEnvironment.teardown.call( this.testEnvironment );
  			} catch( e ) {
  				QUnit.pushFailure( "Teardown failed on " + this.testName + ": " + e.message, extractStacktrace( e, 1 ) );
  			}
  		}
  		checkPollution();
  	},
  	finish: function() {
  		config.current = this;
  		if ( this.expected != null && this.expected != this.assertions.length ) {
  			QUnit.pushFailure( "Expected " + this.expected + " assertions, but " + this.assertions.length + " were run", this.stack );
  		} else if ( this.expected == null && !this.assertions.length ) {
  			QUnit.pushFailure( "Expected at least one assertion, but none were run - call expect(0) to accept zero assertions.", this.stack );
  		}
  
  		var assertion, a, b, i, li, ol,
  			good = 0,
  			bad = 0,
  			tests = id( "qunit-tests" );
  
  		config.stats.all += this.assertions.length;
  		config.moduleStats.all += this.assertions.length;
  
  		if ( tests ) {
  			ol = document.createElement( "ol" );
  
  			for ( i = 0; i < this.assertions.length; i++ ) {
  				assertion = this.assertions[i];
  
  				li = document.createElement( "li" );
  				li.className = assertion.result ? "pass" : "fail";
  				li.innerHTML = assertion.message || ( assertion.result ? "okay" : "failed" );
  				ol.appendChild( li );
  
  				if ( assertion.result ) {
  					good++;
  				} else {
  					bad++;
  					config.stats.bad++;
  					config.moduleStats.bad++;
  				}
  			}
  
  			// store result when possible
  			if ( QUnit.config.reorder && defined.sessionStorage ) {
  				if ( bad ) {
  					sessionStorage.setItem( "qunit-test-" + this.module + "-" + this.testName, bad );
  				} else {
  					sessionStorage.removeItem( "qunit-test-" + this.module + "-" + this.testName );
  				}
  			}
  
  			if ( bad === 0 ) {
  				ol.style.display = "none";
  			}
  
  			// `b` initialized at top of scope
  			b = document.createElement( "strong" );
  			b.innerHTML = this.name + " <b class='counts'>(<b class='failed'>" + bad + "</b>, <b class='passed'>" + good + "</b>, " + this.assertions.length + ")</b>";
  
  			addEvent(b, "click", function() {
  				var next = b.nextSibling.nextSibling,
  					display = next.style.display;
  				next.style.display = display === "none" ? "block" : "none";
  			});
  
  			addEvent(b, "dblclick", function( e ) {
  				var target = e && e.target ? e.target : window.event.srcElement;
  				if ( target.nodeName.toLowerCase() == "span" || target.nodeName.toLowerCase() == "b" ) {
  					target = target.parentNode;
  				}
  				if ( window.location && target.nodeName.toLowerCase() === "strong" ) {
  					window.location = QUnit.url({
  						filter: getText([target]).replace( /\([^)]+\)$/, "" ).replace( /(^\s*|\s*$)/g, "" )
  					});
  				}
  			});
  
  			// `li` initialized at top of scope
  			li = id( this.id );
  			li.className = bad ? "fail" : "pass";
  			li.removeChild( li.firstChild );
  			a = li.firstChild;
  			li.appendChild( b );
  			li.appendChild ( a );
  			li.appendChild( ol );
  
  		} else {
  			for ( i = 0; i < this.assertions.length; i++ ) {
  				if ( !this.assertions[i].result ) {
  					bad++;
  					config.stats.bad++;
  					config.moduleStats.bad++;
  				}
  			}
  		}
  
  		runLoggingCallbacks( "testDone", QUnit, {
  			name: this.testName,
  			module: this.module,
  			failed: bad,
  			passed: this.assertions.length - bad,
  			total: this.assertions.length
  		});
  
  		QUnit.reset();
  	},
  
  	queue: function() {
  		var bad,
  			test = this;
  
  		synchronize(function() {
  			test.init();
  		});
  		function run() {
  			// each of these can by async
  			synchronize(function() {
  				test.setup();
  			});
  			synchronize(function() {
  				test.run();
  			});
  			synchronize(function() {
  				test.teardown();
  			});
  			synchronize(function() {
  				test.finish();
  			});
  		}
  
  		// `bad` initialized at top of scope
  		// defer when previous test run passed, if storage is available
  		bad = QUnit.config.reorder && defined.sessionStorage &&
  						+sessionStorage.getItem( "qunit-test-" + this.module + "-" + this.testName );
  
  		if ( bad ) {
  			run();
  		} else {
  			synchronize( run, true );
  		}
  	}
  };
  
  // `QUnit` initialized at top of scope
  QUnit = {
  
  	// call on start of module test to prepend name to all tests
  	module: function( name, testEnvironment ) {
  		config.currentModule = name;
  		config.currentModuleTestEnviroment = testEnvironment;
  	},
  
  	asyncTest: function( testName, expected, callback ) {
  		if ( arguments.length === 2 ) {
  			callback = expected;
  			expected = null;
  		}
  
  		QUnit.test( testName, expected, callback, true );
  	},
  
  	test: function( testName, expected, callback, async ) {
  		var test,
  			name = "<span class='test-name'>" + escapeInnerText( testName ) + "</span>";
  
  		if ( arguments.length === 2 ) {
  			callback = expected;
  			expected = null;
  		}
  
  		if ( config.currentModule ) {
  			name = "<span class='module-name'>" + config.currentModule + "</span>: " + name;
  		}
  
  		if ( !validTest(config.currentModule + ": " + testName) ) {
  			return;
  		}
  
  		test = new Test( name, testName, expected, async, callback );
  		test.module = config.currentModule;
  		test.moduleTestEnvironment = config.currentModuleTestEnviroment;
  		test.stack = sourceFromStacktrace( 2 );
  		test.queue();
  	},
  
  	// Specify the number of expected assertions to gurantee that failed test (no assertions are run at all) don't slip through.
  	expect: function( asserts ) {
  		config.current.expected = asserts;
  	},
  
  	// Asserts true.
  	// @example ok( "asdfasdf".length > 5, "There must be at least 5 chars" );
  	ok: function( result, msg ) {
  		if ( !config.current ) {
  			throw new Error( "ok() assertion outside test context, was " + sourceFromStacktrace(2) );
  		}
  		result = !!result;
  
  		var source,
  			details = {
  				result: result,
  				message: msg
  			};
  
  		msg = escapeInnerText( msg || (result ? "okay" : "failed" ) );
  		msg = "<span class='test-message'>" + msg + "</span>";
  
  		if ( !result ) {
  			source = sourceFromStacktrace( 2 );
  			if ( source ) {
  				details.source = source;
  				msg += "<table><tr class='test-source'><th>Source: </th><td><pre>" + escapeInnerText( source ) + "</pre></td></tr></table>";
  			}
  		}
  		runLoggingCallbacks( "log", QUnit, details );
  		config.current.assertions.push({
  			result: result,
  			message: msg
  		});
  	},
  
  	// Checks that the first two arguments are equal, with an optional message. Prints out both actual and expected values.
  	// @example equal( format( "Received {0} bytes.", 2), "Received 2 bytes." );
  	equal: function( actual, expected, message ) {
  		QUnit.push( expected == actual, actual, expected, message );
  	},
  
  	notEqual: function( actual, expected, message ) {
  		QUnit.push( expected != actual, actual, expected, message );
  	},
  
  	deepEqual: function( actual, expected, message ) {
  		QUnit.push( QUnit.equiv(actual, expected), actual, expected, message );
  	},
  
  	notDeepEqual: function( actual, expected, message ) {
  		QUnit.push( !QUnit.equiv(actual, expected), actual, expected, message );
  	},
  
  	strictEqual: function( actual, expected, message ) {
  		QUnit.push( expected === actual, actual, expected, message );
  	},
  
  	notStrictEqual: function( actual, expected, message ) {
  		QUnit.push( expected !== actual, actual, expected, message );
  	},
  
  	raises: function( block, expected, message ) {
  		var actual,
  			ok = false;
  
  		if ( typeof expected === "string" ) {
  			message = expected;
  			expected = null;
  		}
  
  		try {
  			block.call( config.current.testEnvironment );
  		} catch (e) {
  			actual = e;
  		}
  
  		if ( actual ) {
  			// we don't want to validate thrown error
  			if ( !expected ) {
  				ok = true;
  			// expected is a regexp
  			} else if ( QUnit.objectType( expected ) === "regexp" ) {
  				ok = expected.test( actual );
  			// expected is a constructor
  			} else if ( actual instanceof expected ) {
  				ok = true;
  			// expected is a validation function which returns true is validation passed
  			} else if ( expected.call( {}, actual ) === true ) {
  				ok = true;
  			}
  		}
  
  		QUnit.ok( ok, message );
  	},
  
  	start: function( count ) {
  		config.semaphore -= count || 1;
  		// don't start until equal number of stop-calls
  		if ( config.semaphore > 0 ) {
  			return;
  		}
  		// ignore if start is called more often then stop
  		if ( config.semaphore < 0 ) {
  			config.semaphore = 0;
  		}
  		// A slight delay, to avoid any current callbacks
  		if ( defined.setTimeout ) {
  			window.setTimeout(function() {
  				if ( config.semaphore > 0 ) {
  					return;
  				}
  				if ( config.timeout ) {
  					clearTimeout( config.timeout );
  				}
  
  				config.blocking = false;
  				process( true );
  			}, 13);
  		} else {
  			config.blocking = false;
  			process( true );
  		}
  	},
  
  	stop: function( count ) {
  		config.semaphore += count || 1;
  		config.blocking = true;
  
  		if ( config.testTimeout && defined.setTimeout ) {
  			clearTimeout( config.timeout );
  			config.timeout = window.setTimeout(function() {
  				QUnit.ok( false, "Test timed out" );
  				config.semaphore = 1;
  				QUnit.start();
  			}, config.testTimeout );
  		}
  	}
  };
  
  // We want access to the constructor's prototype
  (function() {
  	function F() {}
  	F.prototype = QUnit;
  	QUnit = new F();
  	// Make F QUnit's constructor so that we can add to the prototype later
  	QUnit.constructor = F;
  }());
  
  // deprecated; still export them to window to provide clear error messages
  // next step: remove entirely
  QUnit.equals = function() {
  	QUnit.push( false, false, false, "QUnit.equals has been deprecated since 2009 (e88049a0), use QUnit.equal instead" );
  };
  QUnit.same = function() {
  	QUnit.push( false, false, false, "QUnit.same has been deprecated since 2009 (e88049a0), use QUnit.deepEqual instead" );
  };
  
  // Maintain internal state
  // `config` initialized at top of scope
  config = {
  	// The queue of tests to run
  	queue: [],
  
  	// block until document ready
  	blocking: true,
  
  	// when enabled, show only failing tests
  	// gets persisted through sessionStorage and can be changed in UI via checkbox
  	hidepassed: false,
  
  	// by default, run previously failed tests first
  	// very useful in combination with "Hide passed tests" checked
  	reorder: true,
  
  	// by default, modify document.title when suite is done
  	altertitle: true,
  
  	urlConfig: [ "noglobals", "notrycatch" ],
  
  	// logging callback queues
  	begin: [],
  	done: [],
  	log: [],
  	testStart: [],
  	testDone: [],
  	moduleStart: [],
  	moduleDone: []
  };
  
  // Load paramaters
  (function() {
  	var i,
  		location = window.location || { search: "", protocol: "file:" },
  		params = location.search.slice( 1 ).split( "&" ),
  		length = params.length,
  		urlParams = {},
  		current;
  
  	if ( params[ 0 ] ) {
  		for ( i = 0; i < length; i++ ) {
  			current = params[ i ].split( "=" );
  			current[ 0 ] = decodeURIComponent( current[ 0 ] );
  			// allow just a key to turn on a flag, e.g., test.html?noglobals
  			current[ 1 ] = current[ 1 ] ? decodeURIComponent( current[ 1 ] ) : true;
  			urlParams[ current[ 0 ] ] = current[ 1 ];
  		}
  	}
  
  	QUnit.urlParams = urlParams;
  	config.filter = urlParams.filter;
  
  	// Figure out if we're running the tests from a server or not
  	QUnit.isLocal = location.protocol === "file:";
  }());
  
  // Expose the API as global variables, unless an 'exports' object exists,
  // in that case we assume we're in CommonJS - export everything at the end
  if ( typeof exports === "undefined" ) {
  	extend( window, QUnit );
  	window.QUnit = QUnit;
  }
  
  // define these after exposing globals to keep them in these QUnit namespace only
  extend( QUnit, {
  	config: config,
  
  	// Initialize the configuration options
  	init: function() {
  		extend( config, {
  			stats: { all: 0, bad: 0 },
  			moduleStats: { all: 0, bad: 0 },
  			started: +new Date(),
  			updateRate: 1000,
  			blocking: false,
  			autostart: true,
  			autorun: false,
  			filter: "",
  			queue: [],
  			semaphore: 0
  		});
  
  		var tests, banner, result,
  			qunit = id( "qunit" );
  
  		if ( qunit ) {
  			qunit.innerHTML =
  				"<h1 id='qunit-header'>" + escapeInnerText( document.title ) + "</h1>" +
  				"<h2 id='qunit-banner'></h2>" +
  				"<div id='qunit-testrunner-toolbar'></div>" +
  				"<h2 id='qunit-userAgent'></h2>" +
  				"<ol id='qunit-tests'></ol>";
  		}
  
  		tests = id( "qunit-tests" );
  		banner = id( "qunit-banner" );
  		result = id( "qunit-testresult" );
  
  		if ( tests ) {
  			tests.innerHTML = "";
  		}
  
  		if ( banner ) {
  			banner.className = "";
  		}
  
  		if ( result ) {
  			result.parentNode.removeChild( result );
  		}
  
  		if ( tests ) {
  			result = document.createElement( "p" );
  			result.id = "qunit-testresult";
  			result.className = "result";
  			tests.parentNode.insertBefore( result, tests );
  			result.innerHTML = "Running...<br/>&nbsp;";
  		}
  	},
  
  	// Resets the test setup. Useful for tests that modify the DOM.
  	// If jQuery is available, uses jQuery's html(), otherwise just innerHTML.
  	reset: function() {
  		var fixture;
  
  		if ( window.jQuery ) {
  			jQuery( "#qunit-fixture" ).html( config.fixture );
  		} else {
  			fixture = id( "qunit-fixture" );
  			if ( fixture ) {
  				fixture.innerHTML = config.fixture;
  			}
  		}
  	},
  
  	// Trigger an event on an element.
  	// @example triggerEvent( document.body, "click" );
  	triggerEvent: function( elem, type, event ) {
  		if ( document.createEvent ) {
  			event = document.createEvent( "MouseEvents" );
  			event.initMouseEvent(type, true, true, elem.ownerDocument.defaultView,
  				0, 0, 0, 0, 0, false, false, false, false, 0, null);
  
  			elem.dispatchEvent( event );
  		} else if ( elem.fireEvent ) {
  			elem.fireEvent( "on" + type );
  		}
  	},
  
  	// Safe object type checking
  	is: function( type, obj ) {
  		return QUnit.objectType( obj ) == type;
  	},
  
  	objectType: function( obj ) {
  		if ( typeof obj === "undefined" ) {
  				return "undefined";
  		// consider: typeof null === object
  		}
  		if ( obj === null ) {
  				return "null";
  		}
  
  		var type = toString.call( obj ).match(/^\[object\s(.*)\]$/)[1] || "";
  
  		switch ( type ) {
  			case "Number":
  				if ( isNaN(obj) ) {
  					return "nan";
  				}
  				return "number";
  			case "String":
  			case "Boolean":
  			case "Array":
  			case "Date":
  			case "RegExp":
  			case "Function":
  				return type.toLowerCase();
  		}
  		if ( typeof obj === "object" ) {
  			return "object";
  		}
  		return undefined;
  	},
  
  	push: function( result, actual, expected, message ) {
  		if ( !config.current ) {
  			throw new Error( "assertion outside test context, was " + sourceFromStacktrace() );
  		}
  
  		var output, source,
  			details = {
  				result: result,
  				message: message,
  				actual: actual,
  				expected: expected
  			};
  
  		message = escapeInnerText( message ) || ( result ? "okay" : "failed" );
  		message = "<span class='test-message'>" + message + "</span>";
  		output = message;
  
  		if ( !result ) {
  			expected = escapeInnerText( QUnit.jsDump.parse(expected) );
  			actual = escapeInnerText( QUnit.jsDump.parse(actual) );
  			output += "<table><tr class='test-expected'><th>Expected: </th><td><pre>" + expected + "</pre></td></tr>";
  
  			if ( actual != expected ) {
  				output += "<tr class='test-actual'><th>Result: </th><td><pre>" + actual + "</pre></td></tr>";
  				output += "<tr class='test-diff'><th>Diff: </th><td><pre>" + QUnit.diff( expected, actual ) + "</pre></td></tr>";
  			}
  
  			source = sourceFromStacktrace();
  
  			if ( source ) {
  				details.source = source;
  				output += "<tr class='test-source'><th>Source: </th><td><pre>" + escapeInnerText( source ) + "</pre></td></tr>";
  			}
  
  			output += "</table>";
  		}
  
  		runLoggingCallbacks( "log", QUnit, details );
  
  		config.current.assertions.push({
  			result: !!result,
  			message: output
  		});
  	},
  
  	pushFailure: function( message, source ) {
  		var output,
  			details = {
  				result: false,
  				message: message
  			};
  
  		message = escapeInnerText(message ) || "error";
  		message = "<span class='test-message'>" + message + "</span>";
  		output = message;
  
  		if ( source ) {
  			details.source = source;
  			output += "<table><tr class='test-source'><th>Source: </th><td><pre>" + escapeInnerText( source ) + "</pre></td></tr></table>";
  		}
  
  		runLoggingCallbacks( "log", QUnit, details );
  
  		config.current.assertions.push({
  			result: false,
  			message: output
  		});
  	},
  
  	url: function( params ) {
  		params = extend( extend( {}, QUnit.urlParams ), params );
  		var key,
  			querystring = "?";
  
  		for ( key in params ) {
  			if ( !hasOwn.call( params, key ) ) {
  				continue;
  			}
  			querystring += encodeURIComponent( key ) + "=" +
  				encodeURIComponent( params[ key ] ) + "&";
  		}
  		return window.location.pathname + querystring.slice( 0, -1 );
  	},
  
  	extend: extend,
  	id: id,
  	addEvent: addEvent
  });
  
  // QUnit.constructor is set to the empty F() above so that we can add to it's prototype later
  // Doing this allows us to tell if the following methods have been overwritten on the actual
  // QUnit object, which is a deprecated way of using the callbacks.
  extend( QUnit.constructor.prototype, {
  	// Logging callbacks; all receive a single argument with the listed properties
  	// run test/logs.html for any related changes
  	begin: registerLoggingCallback( "begin" ),
  	// done: { failed, passed, total, runtime }
  	done: registerLoggingCallback( "done" ),
  	// log: { result, actual, expected, message }
  	log: registerLoggingCallback( "log" ),
  	// testStart: { name }
  	testStart: registerLoggingCallback( "testStart" ),
  	// testDone: { name, failed, passed, total }
  	testDone: registerLoggingCallback( "testDone" ),
  	// moduleStart: { name }
  	moduleStart: registerLoggingCallback( "moduleStart" ),
  	// moduleDone: { name, failed, passed, total }
  	moduleDone: registerLoggingCallback( "moduleDone" )
  });
  
  if ( typeof document === "undefined" || document.readyState === "complete" ) {
  	config.autorun = true;
  }
  
  QUnit.load = function() {
  	runLoggingCallbacks( "begin", QUnit, {} );
  
  	// Initialize the config, saving the execution queue
  	var banner, filter, i, label, len, main, ol, toolbar, userAgent, val,
  		urlConfigHtml = "",
  		oldconfig = extend( {}, config );
  
  	QUnit.init();
  	extend(config, oldconfig);
  
  	config.blocking = false;
  
  	len = config.urlConfig.length;
  
  	for ( i = 0; i < len; i++ ) {
  		val = config.urlConfig[i];
  		config[val] = QUnit.urlParams[val];
  		urlConfigHtml += "<label><input name='" + val + "' type='checkbox'" + ( config[val] ? " checked='checked'" : "" ) + ">" + val + "</label>";
  	}
  
  	// `userAgent` initialized at top of scope
  	userAgent = id( "qunit-userAgent" );
  	if ( userAgent ) {
  		userAgent.innerHTML = navigator.userAgent;
  	}
  
  	// `banner` initialized at top of scope
  	banner = id( "qunit-header" );
  	if ( banner ) {
  		banner.innerHTML = "<a href='" + QUnit.url({ filter: undefined }) + "'>" + banner.innerHTML + "</a> " + urlConfigHtml;
  		addEvent( banner, "change", function( event ) {
  			var params = {};
  			params[ event.target.name ] = event.target.checked ? true : undefined;
  			window.location = QUnit.url( params );
  		});
  	}
  
  	// `toolbar` initialized at top of scope
  	toolbar = id( "qunit-testrunner-toolbar" );
  	if ( toolbar ) {
  		// `filter` initialized at top of scope
  		filter = document.createElement( "input" );
  		filter.type = "checkbox";
  		filter.id = "qunit-filter-pass";
  
  		addEvent( filter, "click", function() {
  			var tmp,
  				ol = document.getElementById( "qunit-tests" );
  
  			if ( filter.checked ) {
  				ol.className = ol.className + " hidepass";
  			} else {
  				tmp = " " + ol.className.replace( /[\n\t\r]/g, " " ) + " ";
  				ol.className = tmp.replace( / hidepass /, " " );
  			}
  			if ( defined.sessionStorage ) {
  				if (filter.checked) {
  					sessionStorage.setItem( "qunit-filter-passed-tests", "true" );
  				} else {
  					sessionStorage.removeItem( "qunit-filter-passed-tests" );
  				}
  			}
  		});
  
  		if ( config.hidepassed || defined.sessionStorage && sessionStorage.getItem( "qunit-filter-passed-tests" ) ) {
  			filter.checked = true;
  			// `ol` initialized at top of scope
  			ol = document.getElementById( "qunit-tests" );
  			ol.className = ol.className + " hidepass";
  		}
  		toolbar.appendChild( filter );
  
  		// `label` initialized at top of scope
  		label = document.createElement( "label" );
  		label.setAttribute( "for", "qunit-filter-pass" );
  		label.innerHTML = "Hide passed tests";
  		toolbar.appendChild( label );
  	}
  
  	// `main` initialized at top of scope
  	main = id( "qunit-fixture" );
  	if ( main ) {
  		config.fixture = main.innerHTML;
  	}
  
  	if ( config.autostart ) {
  		QUnit.start();
  	}
  };
  
  addEvent( window, "load", QUnit.load );
  
  // addEvent(window, "error" ) gives us a useless event object
  window.onerror = function( message, file, line ) {
  	if ( QUnit.config.current ) {
  		QUnit.pushFailure( message, file + ":" + line );
  	} else {
  		QUnit.test( "global failure", function() {
  			QUnit.pushFailure( message, file + ":" + line );
  		});
  	}
  };
  
  function done() {
  	config.autorun = true;
  
  	// Log the last module results
  	if ( config.currentModule ) {
  		runLoggingCallbacks( "moduleDone", QUnit, {
  			name: config.currentModule,
  			failed: config.moduleStats.bad,
  			passed: config.moduleStats.all - config.moduleStats.bad,
  			total: config.moduleStats.all
  		});
  	}
  
  	var i, key,
  		banner = id( "qunit-banner" ),
  		tests = id( "qunit-tests" ),
  		runtime = +new Date() - config.started,
  		passed = config.stats.all - config.stats.bad,
  		html = [
  			"Tests completed in ",
  			runtime,
  			" milliseconds.<br/>",
  			"<span class='passed'>",
  			passed,
  			"</span> tests of <span class='total'>",
  			config.stats.all,
  			"</span> passed, <span class='failed'>",
  			config.stats.bad,
  			"</span> failed."
  		].join( "" );
  
  	if ( banner ) {
  		banner.className = ( config.stats.bad ? "qunit-fail" : "qunit-pass" );
  	}
  
  	if ( tests ) {
  		id( "qunit-testresult" ).innerHTML = html;
  	}
  
  	if ( config.altertitle && typeof document !== "undefined" && document.title ) {
  		// show ✖ for good, ✔ for bad suite result in title
  		// use escape sequences in case file gets loaded with non-utf-8-charset
  		document.title = [
  			( config.stats.bad ? "\u2716" : "\u2714" ),
  			document.title.replace( /^[\u2714\u2716] /i, "" )
  		].join( " " );
  	}
  
  	// clear own sessionStorage items if all tests passed
  	if ( config.reorder && defined.sessionStorage && config.stats.bad === 0 ) {
  		// `key` & `i` initialized at top of scope
  		for ( i = 0; i < sessionStorage.length; i++ ) {
  			key = sessionStorage.key( i++ );
  			if ( key.indexOf( "qunit-test-" ) === 0 ) {
  				sessionStorage.removeItem( key );
  			}
  		}
  	}
  
  	runLoggingCallbacks( "done", QUnit, {
  		failed: config.stats.bad,
  		passed: passed,
  		total: config.stats.all,
  		runtime: runtime
  	});
  }
  
  function validTest( name ) {
  	var not,
  		filter = config.filter,
  		run = false;
  
  	if ( !filter ) {
  		return true;
  	}
  
  	not = filter.charAt( 0 ) === "!";
  
  	if ( not ) {
  		filter = filter.slice( 1 );
  	}
  
  	if ( name.indexOf( filter ) !== -1 ) {
  		return !not;
  	}
  
  	if ( not ) {
  		run = true;
  	}
  
  	return run;
  }
  
  // so far supports only Firefox, Chrome and Opera (buggy), Safari (for real exceptions)
  // Later Safari and IE10 are supposed to support error.stack as well
  // See also https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error/Stack
  function extractStacktrace( e, offset ) {
  	offset = offset || 3;
  
  	var stack;
  
  	if ( e.stacktrace ) {
  		// Opera
  		return e.stacktrace.split( "\n" )[ offset + 3 ];
  	} else if ( e.stack ) {
  		// Firefox, Chrome
  		stack = e.stack.split( "\n" );
  		if (/^error$/i.test( stack[0] ) ) {
  			stack.shift();
  		}
  		return stack[ offset ];
  	} else if ( e.sourceURL ) {
  		// Safari, PhantomJS
  		// hopefully one day Safari provides actual stacktraces
  		// exclude useless self-reference for generated Error objects
  		if ( /qunit.js$/.test( e.sourceURL ) ) {
  			return;
  		}
  		// for actual exceptions, this is useful
  		return e.sourceURL + ":" + e.line;
  	}
  }
  function sourceFromStacktrace( offset ) {
  	try {
  		throw new Error();
  	} catch ( e ) {
  		return extractStacktrace( e, offset );
  	}
  }
  
  function escapeInnerText( s ) {
  	if ( !s ) {
  		return "";
  	}
  	s = s + "";
  	return s.replace( /[\&<>]/g, function( s ) {
  		switch( s ) {
  			case "&": return "&amp;";
  			case "<": return "&lt;";
  			case ">": return "&gt;";
  			default: return s;
  		}
  	});
  }
  
  function synchronize( callback, last ) {
  	config.queue.push( callback );
  
  	if ( config.autorun && !config.blocking ) {
  		process( last );
  	}
  }
  
  function process( last ) {
  	function next() {
  		process( last );
  	}
  	var start = new Date().getTime();
  	config.depth = config.depth ? config.depth + 1 : 1;
  
  	while ( config.queue.length && !config.blocking ) {
  		if ( !defined.setTimeout || config.updateRate <= 0 || ( ( new Date().getTime() - start ) < config.updateRate ) ) {
  			config.queue.shift()();
  		} else {
  			window.setTimeout( next, 13 );
  			break;
  		}
  	}
  	config.depth--;
  	if ( last && !config.blocking && !config.queue.length && config.depth === 0 ) {
  		done();
  	}
  }
  
  function saveGlobal() {
  	config.pollution = [];
  
  	if ( config.noglobals ) {
  		for ( var key in window ) {
  			// in Opera sometimes DOM element ids show up here, ignore them
  			if ( !hasOwn.call( window, key ) || /^qunit-test-output/.test( key ) ) {
  				continue;
  			}
  			config.pollution.push( key );
  		}
  	}
  }
  
  function checkPollution( name ) {
  	var newGlobals,
  		deletedGlobals,
  		old = config.pollution;
  
  	saveGlobal();
  
  	newGlobals = diff( config.pollution, old );
  	if ( newGlobals.length > 0 ) {
  		QUnit.pushFailure( "Introduced global variable(s): " + newGlobals.join(", ") );
  	}
  
  	deletedGlobals = diff( old, config.pollution );
  	if ( deletedGlobals.length > 0 ) {
  		QUnit.pushFailure( "Deleted global variable(s): " + deletedGlobals.join(", ") );
  	}
  }
  
  // returns a new Array with the elements that are in a but not in b
  function diff( a, b ) {
  	var i, j,
  		result = a.slice();
  
  	for ( i = 0; i < result.length; i++ ) {
  		for ( j = 0; j < b.length; j++ ) {
  			if ( result[i] === b[j] ) {
  				result.splice( i, 1 );
  				i--;
  				break;
  			}
  		}
  	}
  	return result;
  }
  
  function extend( a, b ) {
  	for ( var prop in b ) {
  		if ( b[ prop ] === undefined ) {
  			delete a[ prop ];
  
  		// Avoid "Member not found" error in IE8 caused by setting window.constructor
  		} else if ( prop !== "constructor" || a !== window ) {
  			a[ prop ] = b[ prop ];
  		}
  	}
  
  	return a;
  }
  
  function addEvent( elem, type, fn ) {
  	if ( elem.addEventListener ) {
  		elem.addEventListener( type, fn, false );
  	} else if ( elem.attachEvent ) {
  		elem.attachEvent( "on" + type, fn );
  	} else {
  		fn();
  	}
  }
  
  function id( name ) {
  	return !!( typeof document !== "undefined" && document && document.getElementById ) &&
  		document.getElementById( name );
  }
  
  function registerLoggingCallback( key ) {
  	return function( callback ) {
  		config[key].push( callback );
  	};
  }
  
  // Supports deprecated method of completely overwriting logging callbacks
  function runLoggingCallbacks( key, scope, args ) {
  	//debugger;
  	var i, callbacks;
  	if ( QUnit.hasOwnProperty( key ) ) {
  		QUnit[ key ].call(scope, args );
  	} else {
  		callbacks = config[ key ];
  		for ( i = 0; i < callbacks.length; i++ ) {
  			callbacks[ i ].call( scope, args );
  		}
  	}
  }
  
  // Test for equality any JavaScript type.
  // Author: Philippe Rathé <prathe@gmail.com>
  QUnit.equiv = (function() {
  
  	// Call the o related callback with the given arguments.
  	function bindCallbacks( o, callbacks, args ) {
  		var prop = QUnit.objectType( o );
  		if ( prop ) {
  			if ( QUnit.objectType( callbacks[ prop ] ) === "function" ) {
  				return callbacks[ prop ].apply( callbacks, args );
  			} else {
  				return callbacks[ prop ]; // or undefined
  			}
  		}
  	}
  
  	// the real equiv function
  	var innerEquiv,
  		// stack to decide between skip/abort functions
  		callers = [],
  		// stack to avoiding loops from circular referencing
  		parents = [],
  
  		getProto = Object.getPrototypeOf || function ( obj ) {
  			return obj.__proto__;
  		},
  		callbacks = (function () {
  
  			// for string, boolean, number and null
  			function useStrictEquality( b, a ) {
  				if ( b instanceof a.constructor || a instanceof b.constructor ) {
  					// to catch short annotaion VS 'new' annotation of a
  					// declaration
  					// e.g. var i = 1;
  					// var j = new Number(1);
  					return a == b;
  				} else {
  					return a === b;
  				}
  			}
  
  			return {
  				"string": useStrictEquality,
  				"boolean": useStrictEquality,
  				"number": useStrictEquality,
  				"null": useStrictEquality,
  				"undefined": useStrictEquality,
  
  				"nan": function( b ) {
  					return isNaN( b );
  				},
  
  				"date": function( b, a ) {
  					return QUnit.objectType( b ) === "date" && a.valueOf() === b.valueOf();
  				},
  
  				"regexp": function( b, a ) {
  					return QUnit.objectType( b ) === "regexp" &&
  						// the regex itself
  						a.source === b.source &&
  						// and its modifers
  						a.global === b.global &&
  						// (gmi) ...
  						a.ignoreCase === b.ignoreCase &&
  						a.multiline === b.multiline;
  				},
  
  				// - skip when the property is a method of an instance (OOP)
  				// - abort otherwise,
  				// initial === would have catch identical references anyway
  				"function": function() {
  					var caller = callers[callers.length - 1];
  					return caller !== Object && typeof caller !== "undefined";
  				},
  
  				"array": function( b, a ) {
  					var i, j, len, loop;
  
  					// b could be an object literal here
  					if ( QUnit.objectType( b ) !== "array" ) {
  						return false;
  					}
  
  					len = a.length;
  					if ( len !== b.length ) {
  						// safe and faster
  						return false;
  					}
  
  					// track reference to avoid circular references
  					parents.push( a );
  					for ( i = 0; i < len; i++ ) {
  						loop = false;
  						for ( j = 0; j < parents.length; j++ ) {
  							if ( parents[j] === a[i] ) {
  								loop = true;// dont rewalk array
  							}
  						}
  						if ( !loop && !innerEquiv(a[i], b[i]) ) {
  							parents.pop();
  							return false;
  						}
  					}
  					parents.pop();
  					return true;
  				},
  
  				"object": function( b, a ) {
  					var i, j, loop,
  						// Default to true
  						eq = true,
  						aProperties = [],
  						bProperties = [];
  
  					// comparing constructors is more strict than using
  					// instanceof
  					if ( a.constructor !== b.constructor ) {
  						// Allow objects with no prototype to be equivalent to
  						// objects with Object as their constructor.
  						if ( !(( getProto(a) === null && getProto(b) === Object.prototype ) ||
  							( getProto(b) === null && getProto(a) === Object.prototype ) ) ) {
  								return false;
  						}
  					}
  
  					// stack constructor before traversing properties
  					callers.push( a.constructor );
  					// track reference to avoid circular references
  					parents.push( a );
  
  					for ( i in a ) { // be strict: don't ensures hasOwnProperty
  									// and go deep
  						loop = false;
  						for ( j = 0; j < parents.length; j++ ) {
  							if ( parents[j] === a[i] ) {
  								// don't go down the same path twice
  								loop = true;
  							}
  						}
  						aProperties.push(i); // collect a's properties
  
  						if (!loop && !innerEquiv( a[i], b[i] ) ) {
  							eq = false;
  							break;
  						}
  					}
  
  					callers.pop(); // unstack, we are done
  					parents.pop();
  
  					for ( i in b ) {
  						bProperties.push( i ); // collect b's properties
  					}
  
  					// Ensures identical properties name
  					return eq && innerEquiv( aProperties.sort(), bProperties.sort() );
  				}
  			};
  		}());
  
  	innerEquiv = function() { // can take multiple arguments
  		var args = [].slice.apply( arguments );
  		if ( args.length < 2 ) {
  			return true; // end transition
  		}
  
  		return (function( a, b ) {
  			if ( a === b ) {
  				return true; // catch the most you can
  			} else if ( a === null || b === null || typeof a === "undefined" ||
  					typeof b === "undefined" ||
  					QUnit.objectType(a) !== QUnit.objectType(b) ) {
  				return false; // don't lose time with error prone cases
  			} else {
  				return bindCallbacks(a, callbacks, [ b, a ]);
  			}
  
  			// apply transition with (1..n) arguments
  		}( args[0], args[1] ) && arguments.callee.apply( this, args.splice(1, args.length - 1 )) );
  	};
  
  	return innerEquiv;
  }());
  
  /**
   * jsDump Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com |
   * http://flesler.blogspot.com Licensed under BSD
   * (http://www.opensource.org/licenses/bsd-license.php) Date: 5/15/2008
   *
   * @projectDescription Advanced and extensible data dumping for Javascript.
   * @version 1.0.0
   * @author Ariel Flesler
   * @link {http://flesler.blogspot.com/2008/05/jsdump-pretty-dump-of-any-javascript.html}
   */
  QUnit.jsDump = (function() {
  	function quote( str ) {
  		return '"' + str.toString().replace( /"/g, '\\"' ) + '"';
  	}
  	function literal( o ) {
  		return o + "";
  	}
  	function join( pre, arr, post ) {
  		var s = jsDump.separator(),
  			base = jsDump.indent(),
  			inner = jsDump.indent(1);
  		if ( arr.join ) {
  			arr = arr.join( "," + s + inner );
  		}
  		if ( !arr ) {
  			return pre + post;
  		}
  		return [ pre, inner + arr, base + post ].join(s);
  	}
  	function array( arr, stack ) {
  		var i = arr.length, ret = new Array(i);
  		this.up();
  		while ( i-- ) {
  			ret[i] = this.parse( arr[i] , undefined , stack);
  		}
  		this.down();
  		return join( "[", ret, "]" );
  	}
  
  	var reName = /^function (\w+)/,
  		jsDump = {
  			parse: function( obj, type, stack ) { //type is used mostly internally, you can fix a (custom)type in advance
  				stack = stack || [ ];
  				var inStack, res,
  					parser = this.parsers[ type || this.typeOf(obj) ];
  
  				type = typeof parser;
  				inStack = inArray( obj, stack );
  
  				if ( inStack != -1 ) {
  					return "recursion(" + (inStack - stack.length) + ")";
  				}
  				//else
  				if ( type == "function" )  {
  					stack.push( obj );
  					res = parser.call( this, obj, stack );
  					stack.pop();
  					return res;
  				}
  				// else
  				return ( type == "string" ) ? parser : this.parsers.error;
  			},
  			typeOf: function( obj ) {
  				var type;
  				if ( obj === null ) {
  					type = "null";
  				} else if ( typeof obj === "undefined" ) {
  					type = "undefined";
  				} else if ( QUnit.is( "RegExp", obj) ) {
  					type = "regexp";
  				} else if ( QUnit.is( "Date", obj) ) {
  					type = "date";
  				} else if ( QUnit.is( "Function", obj) ) {
  					type = "function";
  				} else if ( typeof obj.setInterval !== undefined && typeof obj.document !== "undefined" && typeof obj.nodeType === "undefined" ) {
  					type = "window";
  				} else if ( obj.nodeType === 9 ) {
  					type = "document";
  				} else if ( obj.nodeType ) {
  					type = "node";
  				} else if (
  					// native arrays
  					toString.call( obj ) === "[object Array]" ||
  					// NodeList objects
  					( typeof obj.length === "number" && typeof obj.item !== "undefined" && ( obj.length ? obj.item(0) === obj[0] : ( obj.item( 0 ) === null && typeof obj[0] === "undefined" ) ) )
  				) {
  					type = "array";
  				} else {
  					type = typeof obj;
  				}
  				return type;
  			},
  			separator: function() {
  				return this.multiline ?	this.HTML ? "<br />" : "\n" : this.HTML ? "&nbsp;" : " ";
  			},
  			indent: function( extra ) {// extra can be a number, shortcut for increasing-calling-decreasing
  				if ( !this.multiline ) {
  					return "";
  				}
  				var chr = this.indentChar;
  				if ( this.HTML ) {
  					chr = chr.replace( /\t/g, "   " ).replace( / /g, "&nbsp;" );
  				}
  				return new Array( this._depth_ + (extra||0) ).join(chr);
  			},
  			up: function( a ) {
  				this._depth_ += a || 1;
  			},
  			down: function( a ) {
  				this._depth_ -= a || 1;
  			},
  			setParser: function( name, parser ) {
  				this.parsers[name] = parser;
  			},
  			// The next 3 are exposed so you can use them
  			quote: quote,
  			literal: literal,
  			join: join,
  			//
  			_depth_: 1,
  			// This is the list of parsers, to modify them, use jsDump.setParser
  			parsers: {
  				window: "[Window]",
  				document: "[Document]",
  				error: "[ERROR]", //when no parser is found, shouldn"t happen
  				unknown: "[Unknown]",
  				"null": "null",
  				"undefined": "undefined",
  				"function": function( fn ) {
  					var ret = "function",
  						name = "name" in fn ? fn.name : (reName.exec(fn) || [])[1];//functions never have name in IE
  
  					if ( name ) {
  						ret += " " + name;
  					}
  					ret += "( ";
  
  					ret = [ ret, QUnit.jsDump.parse( fn, "functionArgs" ), "){" ].join( "" );
  					return join( ret, QUnit.jsDump.parse(fn,"functionCode" ), "}" );
  				},
  				array: array,
  				nodelist: array,
  				"arguments": array,
  				object: function( map, stack ) {
  					var ret = [ ], keys, key, val, i;
  					QUnit.jsDump.up();
  					if ( Object.keys ) {
  						keys = Object.keys( map );
  					} else {
  						keys = [];
  						for ( key in map ) {
  							keys.push( key );
  						}
  					}
  					keys.sort();
  					for ( i = 0; i < keys.length; i++ ) {
  						key = keys[ i ];
  						val = map[ key ];
  						ret.push( QUnit.jsDump.parse( key, "key" ) + ": " + QUnit.jsDump.parse( val, undefined, stack ) );
  					}
  					QUnit.jsDump.down();
  					return join( "{", ret, "}" );
  				},
  				node: function( node ) {
  					var a, val,
  						open = QUnit.jsDump.HTML ? "&lt;" : "<",
  						close = QUnit.jsDump.HTML ? "&gt;" : ">",
  						tag = node.nodeName.toLowerCase(),
  						ret = open + tag;
  
  					for ( a in QUnit.jsDump.DOMAttrs ) {
  						val = node[ QUnit.jsDump.DOMAttrs[a] ];
  						if ( val ) {
  							ret += " " + a + "=" + QUnit.jsDump.parse( val, "attribute" );
  						}
  					}
  					return ret + close + open + "/" + tag + close;
  				},
  				functionArgs: function( fn ) {//function calls it internally, it's the arguments part of the function
  					var args,
  						l = fn.length;
  
  					if ( !l ) {
  						return "";
  					}
  
  					args = new Array(l);
  					while ( l-- ) {
  						args[l] = String.fromCharCode(97+l);//97 is 'a'
  					}
  					return " " + args.join( ", " ) + " ";
  				},
  				key: quote, //object calls it internally, the key part of an item in a map
  				functionCode: "[code]", //function calls it internally, it's the content of the function
  				attribute: quote, //node calls it internally, it's an html attribute value
  				string: quote,
  				date: quote,
  				regexp: literal, //regex
  				number: literal,
  				"boolean": literal
  			},
  			DOMAttrs: {
  				//attributes to dump from nodes, name=>realName
  				id: "id",
  				name: "name",
  				"class": "className"
  			},
  			HTML: false,//if true, entities are escaped ( <, >, \t, space and \n )
  			indentChar: "  ",//indentation unit
  			multiline: true //if true, items in a collection, are separated by a \n, else just a space.
  		};
  
  	return jsDump;
  }());
  
  // from Sizzle.js
  function getText( elems ) {
  	var i, elem,
  		ret = "";
  
  	for ( i = 0; elems[i]; i++ ) {
  		elem = elems[i];
  
  		// Get the text from text nodes and CDATA nodes
  		if ( elem.nodeType === 3 || elem.nodeType === 4 ) {
  			ret += elem.nodeValue;
  
  		// Traverse everything else, except comment nodes
  		} else if ( elem.nodeType !== 8 ) {
  			ret += getText( elem.childNodes );
  		}
  	}
  
  	return ret;
  }
  
  // from jquery.js
  function inArray( elem, array ) {
  	if ( array.indexOf ) {
  		return array.indexOf( elem );
  	}
  
  	for ( var i = 0, length = array.length; i < length; i++ ) {
  		if ( array[ i ] === elem ) {
  			return i;
  		}
  	}
  
  	return -1;
  }
  
  /*
   * Javascript Diff Algorithm
   *  By John Resig (http://ejohn.org/)
   *  Modified by Chu Alan "sprite"
   *
   * Released under the MIT license.
   *
   * More Info:
   *  http://ejohn.org/projects/javascript-diff-algorithm/
   *
   * Usage: QUnit.diff(expected, actual)
   *
   * QUnit.diff( "the quick brown fox jumped over", "the quick fox jumps over" ) == "the  quick <del>brown </del> fox <del>jumped </del><ins>jumps </ins> over"
   */
  QUnit.diff = (function() {
  	function diff( o, n ) {
  		var i,
  			ns = {},
  			os = {};
  
  		for ( i = 0; i < n.length; i++ ) {
  			if ( ns[ n[i] ] == null ) {
  				ns[ n[i] ] = {
  					rows: [],
  					o: null
  				};
  			}
  			ns[ n[i] ].rows.push( i );
  		}
  
  		for ( i = 0; i < o.length; i++ ) {
  			if ( os[ o[i] ] == null ) {
  				os[ o[i] ] = {
  					rows: [],
  					n: null
  				};
  			}
  			os[ o[i] ].rows.push( i );
  		}
  
  		for ( i in ns ) {
  			if ( !hasOwn.call( ns, i ) ) {
  				continue;
  			}
  			if ( ns[i].rows.length == 1 && typeof os[i] != "undefined" && os[i].rows.length == 1 ) {
  				n[ ns[i].rows[0] ] = {
  					text: n[ ns[i].rows[0] ],
  					row: os[i].rows[0]
  				};
  				o[ os[i].rows[0] ] = {
  					text: o[ os[i].rows[0] ],
  					row: ns[i].rows[0]
  				};
  			}
  		}
  
  		for ( i = 0; i < n.length - 1; i++ ) {
  			if ( n[i].text != null && n[ i + 1 ].text == null && n[i].row + 1 < o.length && o[ n[i].row + 1 ].text == null &&
  						n[ i + 1 ] == o[ n[i].row + 1 ] ) {
  
  				n[ i + 1 ] = {
  					text: n[ i + 1 ],
  					row: n[i].row + 1
  				};
  				o[ n[i].row + 1 ] = {
  					text: o[ n[i].row + 1 ],
  					row: i + 1
  				};
  			}
  		}
  
  		for ( i = n.length - 1; i > 0; i-- ) {
  			if ( n[i].text != null && n[ i - 1 ].text == null && n[i].row > 0 && o[ n[i].row - 1 ].text == null &&
  						n[ i - 1 ] == o[ n[i].row - 1 ]) {
  
  				n[ i - 1 ] = {
  					text: n[ i - 1 ],
  					row: n[i].row - 1
  				};
  				o[ n[i].row - 1 ] = {
  					text: o[ n[i].row - 1 ],
  					row: i - 1
  				};
  			}
  		}
  
  		return {
  			o: o,
  			n: n
  		};
  	}
  
  	return function( o, n ) {
  		o = o.replace( /\s+$/, "" );
  		n = n.replace( /\s+$/, "" );
  
  		var i, pre,
  			str = "",
  			out = diff( o === "" ? [] : o.split(/\s+/), n === "" ? [] : n.split(/\s+/) ),
  			oSpace = o.match(/\s+/g),
  			nSpace = n.match(/\s+/g);
  
  		if ( oSpace == null ) {
  			oSpace = [ " " ];
  		}
  		else {
  			oSpace.push( " " );
  		}
  
  		if ( nSpace == null ) {
  			nSpace = [ " " ];
  		}
  		else {
  			nSpace.push( " " );
  		}
  
  		if ( out.n.length === 0 ) {
  			for ( i = 0; i < out.o.length; i++ ) {
  				str += "<del>" + out.o[i] + oSpace[i] + "</del>";
  			}
  		}
  		else {
  			if ( out.n[0].text == null ) {
  				for ( n = 0; n < out.o.length && out.o[n].text == null; n++ ) {
  					str += "<del>" + out.o[n] + oSpace[n] + "</del>";
  				}
  			}
  
  			for ( i = 0; i < out.n.length; i++ ) {
  				if (out.n[i].text == null) {
  					str += "<ins>" + out.n[i] + nSpace[i] + "</ins>";
  				}
  				else {
  					// `pre` initialized at top of scope
  					pre = "";
  
  					for ( n = out.n[i].row + 1; n < out.o.length && out.o[n].text == null; n++ ) {
  						pre += "<del>" + out.o[n] + oSpace[n] + "</del>";
  					}
  					str += " " + out.n[i].text + nSpace[i] + pre;
  				}
  			}
  		}
  
  		return str;
  	};
  }());
  
  // for CommonJS enviroments, export everything
  if ( typeof exports !== "undefined" ) {
  	extend(exports, QUnit);
  }
  
  // get at whatever the global object is, like window in browsers
  }( (function() {return this;}.call()) ));
  