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 <h1 id="qunit-header">JavaScript Koans</h1>
 <h2 id="qunit-banner"></h2>
 <h2 id="qunit-userAgent"></h2>
 <h3 class="welcome_message">To begin, find the file 'topics/about_control_structures.js', and complete the tests.</h3>
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Update
======

JavaScript Koans is an interactive learning environment that uses failing tests to introduce students to aspects of JavaScript in a logical sequence. 

The inspiration for this project comes from the Edgecase Ruby Koans and the book 'Javascript: The Good Parts'.

Open the file jskoans.htm in your favourite browser and make the tests pass.

The koans use the [Qunit](http://qunitjs.com/) test syntax and test runner. 

Get started with Ryan Anklam's [Learn JavaScript completely On the Cloud With the JavaScript Koans and Cloud9 IDE](http://blog.bittersweetryan.com/2011/08/learn-some-javascript-completely-on.html)
/*!
 * jQuery JavaScript Library v1.4.1
 * http://jquery.com/
 *
 * Copyright 2010, John Resig
 *
 * Includes Sizzle.js
 * http://sizzlejs.com/
 * Copyright 2010, The Dojo Foundation
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * Date: Mon Jan 25 19:43:33 2010 -0500
 */
(function( window, undefined ) {

// Define a local copy of jQuery
var jQuery = function( selector, context ) {
		// The jQuery object is actually just the init constructor 'enhanced'
		return new jQuery.fn.init( selector, context );
	},

	// Map over jQuery in case of overwrite
	_jQuery = window.jQuery,

	// Map over the $ in case of overwrite
	_$ = window.$,

	// Use the correct document accordingly with window argument (sandbox)
	document = window.document,

	// A central reference to the root jQuery(document)
	rootjQuery,

	// A simple way to check for HTML strings or ID strings
	// (both of which we optimize for)
	quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/,

	// Is it a simple selector
	isSimple = /^.[^:#\[\.,]*$/,

	// Check if a string has a non-whitespace character in it
	rnotwhite = /\S/,

	// Used for trimming whitespace
	rtrim = /^(\s|\u00A0)+|(\s|\u00A0)+$/g,

	// Match a standalone tag
	rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/,

	// Keep a UserAgent string for use with jQuery.browser
	userAgent = navigator.userAgent,

	// For matching the engine and version of the browser
	browserMatch,
	
	// Has the ready events already been bound?
	readyBound = false,
	
	// The functions to execute on DOM ready
	readyList = [],

	// The ready event handler
	DOMContentLoaded,

	// Save a reference to some core methods
	toString = Object.prototype.toString,
	hasOwnProperty = Object.prototype.hasOwnProperty,
	push = Array.prototype.push,
	slice = Array.prototype.slice,
	indexOf = Array.prototype.indexOf;

jQuery.fn = jQuery.prototype = {
	init: function( selector, context ) {
		var match, elem, ret, doc;

		// Handle $(""), $(null), or $(undefined)
		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" ) {
			// Are we dealing with HTML string or an ID?
			match = quickExpr.exec( selector );

			// Verify a match, and that no context was specified for #id
			if ( match && (match[1] || !context) ) {

				// HANDLE: $(html) -> $(array)
				if ( match[1] ) {
					doc = (context ? context.ownerDocument || context : document);

					// If a single string is passed in and it's a single tag
					// just do a createElement and skip the rest
					ret = rsingleTag.exec( selector );

					if ( ret ) {
						if ( jQuery.isPlainObject( context ) ) {
							selector = [ document.createElement( ret[1] ) ];
							jQuery.fn.attr.call( selector, context, true );

						} else {
							selector = [ doc.createElement( ret[1] ) ];
						}

					} else {
						ret = buildFragment( [ match[1] ], [ doc ] );
						selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes;
					}

				// HANDLE: $("#id")
				} else {
					elem = document.getElementById( match[2] );

					if ( elem ) {
						// 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: $("TAG")
			} else if ( !context && /^\w+$/.test( selector ) ) {
				this.selector = selector;
				this.context = document;
				selector = document.getElementsByTagName( selector );

			// 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 jQuery( 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.isArray( selector ) ?
			this.setArray( selector ) :
			jQuery.makeArray( selector, this );
	},

	// Start with an empty selector
	selector: "",

	// The current version of jQuery being used
	jquery: "1.4.1",

	// 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 slice.call( this, 0 );
	},

	// 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.slice(num)[ 0 ] : 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( elems || null );

		// 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;
	},

	// Force the current matched set of elements to become
	// the specified array of elements (destroying the stack in the process)
	// You should use pushStack() in order to do this, but maintain the stack
	setArray: function( elems ) {
		// Resetting the length to 0, then using the native Array push
		// is a super-fast way to populate an object with array-like properties
		this.length = 0;
		push.apply( this, elems );

		return this;
	},

	// 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 ) {
		// Attach the listeners
		jQuery.bindReady();

		// If the DOM is already ready
		if ( jQuery.isReady ) {
			// Execute the function immediately
			fn.call( document, jQuery );

		// Otherwise, remember the function for later
		} else if ( readyList ) {
			// Add the function to the wait list
			readyList.push( fn );
		}

		return this;
	},
	
	eq: function( 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( slice.apply( this, arguments ),
			"slice", 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 || jQuery(null);
	},

	// For internal use only.
	// Behaves like an Array's method, not like a jQuery method.
	push: 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() {
	// copy reference to target object
	var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;

	// 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 object literal values or arrays
				if ( deep && copy && ( jQuery.isPlainObject(copy) || jQuery.isArray(copy) ) ) {
					var clone = src && ( jQuery.isPlainObject(src) || jQuery.isArray(src) ) ? src
						: jQuery.isArray(copy) ? [] : {};

					// 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 ) {
		window.$ = _$;

		if ( deep ) {
			window.jQuery = _jQuery;
		}

		return jQuery;
	},
	
	// Is the DOM ready to be used? Set to true once it occurs.
	isReady: false,
	
	// Handle when the DOM is ready
	ready: function() {
		// Make sure that the DOM is not already loaded
		if ( !jQuery.isReady ) {
			// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
			if ( !document.body ) {
				return setTimeout( jQuery.ready, 13 );
			}

			// Remember that the DOM is ready
			jQuery.isReady = true;

			// If there are functions bound, to execute
			if ( readyList ) {
				// Execute all of them
				var fn, i = 0;
				while ( (fn = readyList[ i++ ]) ) {
					fn.call( document, jQuery );
				}

				// Reset the list of functions
				readyList = null;
			}

			// Trigger any bound ready events
			if ( jQuery.fn.triggerHandler ) {
				jQuery( document ).triggerHandler( "ready" );
			}
		}
	},
	
	bindReady: function() {
		if ( readyBound ) {
			return;
		}

		readyBound = true;

		// Catch cases where $(document).ready() is called after the
		// browser event has already occurred.
		if ( document.readyState === "complete" ) {
			return jQuery.ready();
		}

		// Mozilla, Opera and webkit nightlies currently support this event
		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 if ( document.attachEvent ) {
			// 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 toplevel = false;

			try {
				toplevel = window.frameElement == null;
			} catch(e) {}

			if ( document.documentElement.doScroll && toplevel ) {
				doScrollCheck();
			}
		}
	},

	// 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 toString.call(obj) === "[object Function]";
	},

	isArray: function( obj ) {
		return toString.call(obj) === "[object Array]";
	},

	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 || toString.call(obj) !== "[object Object]" || obj.nodeType || obj.setInterval ) {
			return false;
		}
		
		// Not own constructor property must be Object
		if ( obj.constructor
			&& !hasOwnProperty.call(obj, "constructor")
			&& !hasOwnProperty.call(obj.constructor.prototype, "isPrototypeOf") ) {
			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 || hasOwnProperty.call( obj, key );
	},

	isEmptyObject: function( obj ) {
		for ( var name in obj ) {
			return false;
		}
		return true;
	},
	
	error: function( msg ) {
		throw msg;
	},
	
	parseJSON: function( data ) {
		if ( typeof data !== "string" || !data ) {
			return null;
		}
		
		// Make sure the incoming data is actual JSON
		// Logic borrowed from http://json.org/json2.js
		if ( /^[\],:{}\s]*$/.test(data.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, "@")
			.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, "]")
			.replace(/(?:^|:|,)(?:\s*\[)+/g, "")) ) {

			// Try to use the native JSON parser first
			return window.JSON && window.JSON.parse ?
				window.JSON.parse( data ) :
				(new Function("return " + data))();

		} else {
			jQuery.error( "Invalid JSON: " + data );
		}
	},

	noop: function() {},

	// Evalulates a script in a global context
	globalEval: function( data ) {
		if ( data && rnotwhite.test(data) ) {
			// Inspired by code by Andrea Giammarchi
			// http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
			var head = document.getElementsByTagName("head")[0] || document.documentElement,
				script = document.createElement("script");

			script.type = "text/javascript";

			if ( jQuery.support.scriptEval ) {
				script.appendChild( document.createTextNode( data ) );
			} else {
				script.text = data;
			}

			// Use insertBefore instead of appendChild to circumvent an IE6 bug.
			// This arises when a base node is used (#2709).
			head.insertBefore( script, head.firstChild );
			head.removeChild( script );
		}
	},

	nodeName: function( elem, name ) {
		return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
	},

	// args is for internal usage only
	each: function( object, callback, args ) {
		var name, i = 0,
			length = object.length,
			isObj = length === undefined || jQuery.isFunction(object);

		if ( args ) {
			if ( isObj ) {
				for ( name in object ) {
					if ( callback.apply( object[ name ], args ) === false ) {
						break;
					}
				}
			} else {
				for ( ; i < length; ) {
					if ( callback.apply( object[ i++ ], args ) === false ) {
						break;
					}
				}
			}

		// A special, fast, case for the most common use of each
		} else {
			if ( isObj ) {
				for ( name in object ) {
					if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
						break;
					}
				}
			} else {
				for ( var value = object[0];
					i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
			}
		}

		return object;
	},

	trim: function( text ) {
		return (text || "").replace( rtrim, "" );
	},

	// results is for internal usage only
	makeArray: function( array, results ) {
		var ret = results || [];

		if ( array != null ) {
			// The window, strings (and functions) also have 'length'
			// The extra typeof function check is to prevent crashes
			// in Safari 2 (See: #3039)
			if ( array.length == null || typeof array === "string" || jQuery.isFunction(array) || (typeof array !== "function" && array.setInterval) ) {
				push.call( ret, array );
			} else {
				jQuery.merge( ret, array );
			}
		}

		return ret;
	},

	inArray: function( 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;
	},

	merge: function( first, second ) {
		var i = first.length, j = 0;

		if ( typeof second.length === "number" ) {
			for ( var l = second.length; 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 ret = [];

		// Go through the array, only saving the items
		// that pass the validator function
		for ( var i = 0, length = elems.length; i < length; i++ ) {
			if ( !inv !== !callback( elems[ i ], i ) ) {
				ret.push( elems[ i ] );
			}
		}

		return ret;
	},

	// arg is for internal usage only
	map: function( elems, callback, arg ) {
		var ret = [], value;

		// Go through the array, translating each of the items to their
		// new value (or values).
		for ( var i = 0, length = elems.length; i < length; i++ ) {
			value = callback( elems[ i ], i, arg );

			if ( value != null ) {
				ret[ ret.length ] = value;
			}
		}

		return ret.concat.apply( [], ret );
	},

	// A global GUID counter for objects
	guid: 1,

	proxy: function( fn, proxy, thisObject ) {
		if ( arguments.length === 2 ) {
			if ( typeof proxy === "string" ) {
				thisObject = fn;
				fn = thisObject[ proxy ];
				proxy = undefined;

			} else if ( proxy && !jQuery.isFunction( proxy ) ) {
				thisObject = proxy;
				proxy = undefined;
			}
		}

		if ( !proxy && fn ) {
			proxy = function() {
				return fn.apply( thisObject || this, arguments );
			};
		}

		// Set the guid of unique handler to the same of original handler, so it can be removed
		if ( fn ) {
			proxy.guid = fn.guid = fn.guid || proxy.guid || jQuery.guid++;
		}

		// So proxy can be declared as an argument
		return proxy;
	},

	// Use of jQuery.browser is frowned upon.
	// More details: http://docs.jquery.com/Utilities/jQuery.browser
	uaMatch: function( ua ) {
		ua = ua.toLowerCase();

		var match = /(webkit)[ \/]([\w.]+)/.exec( ua ) ||
			/(opera)(?:.*version)?[ \/]([\w.]+)/.exec( ua ) ||
			/(msie) ([\w.]+)/.exec( ua ) ||
			!/compatible/.test( ua ) && /(mozilla)(?:.*? rv:([\w.]+))?/.exec( ua ) ||
		  	[];

		return { browser: match[1] || "", version: match[2] || "0" };
	},

	browser: {}
});

browserMatch = jQuery.uaMatch( userAgent );
if ( browserMatch.browser ) {
	jQuery.browser[ browserMatch.browser ] = true;
	jQuery.browser.version = browserMatch.version;
}

// Deprecated, use jQuery.browser.webkit instead
if ( jQuery.browser.webkit ) {
	jQuery.browser.safari = true;
}

if ( indexOf ) {
	jQuery.inArray = function( elem, array ) {
		return indexOf.call( array, elem );
	};
}

// All jQuery objects should point back to these
rootjQuery = jQuery(document);

// Cleanup functions for the document ready method
if ( document.addEventListener ) {
	DOMContentLoaded = function() {
		document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
		jQuery.ready();
	};

} else if ( document.attachEvent ) {
	DOMContentLoaded = function() {
		// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
		if ( document.readyState === "complete" ) {
			document.detachEvent( "onreadystatechange", DOMContentLoaded );
			jQuery.ready();
		}
	};
}

// The DOM ready check for Internet Explorer
function doScrollCheck() {
	if ( jQuery.isReady ) {
		return;
	}

	try {
		// If IE is used, use the trick by Diego Perini
		// http://javascript.nwbox.com/IEContentLoaded/
		document.documentElement.doScroll("left");
	} catch( error ) {
		setTimeout( doScrollCheck, 1 );
		return;
	}

	// and execute any waiting functions
	jQuery.ready();
}

function evalScript( i, elem ) {
	if ( elem.src ) {
		jQuery.ajax({
			url: elem.src,
			async: false,
			dataType: "script"
		});
	} else {
		jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
	}

	if ( elem.parentNode ) {
		elem.parentNode.removeChild( elem );
	}
}

// Mutifunctional method to get and set values to a collection
// The value/s can be optionally by executed if its a function
function access( elems, key, value, exec, fn, pass ) {
	var length = elems.length;
	
	// Setting many attributes
	if ( typeof key === "object" ) {
		for ( var k in key ) {
			access( elems, k, key[k], exec, fn, value );
		}
		return elems;
	}
	
	// Setting one attribute
	if ( value !== undefined ) {
		// Optionally, function values get executed if exec is true
		exec = !pass && exec && jQuery.isFunction(value);
		
		for ( var i = 0; i < length; i++ ) {
			fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass );
		}
		
		return elems;
	}
	
	// Getting an attribute
	return length ? fn( elems[0], key ) : null;
}

function now() {
	return (new Date).getTime();
}
(function() {

	jQuery.support = {};

	var root = document.documentElement,
		script = document.createElement("script"),
		div = document.createElement("div"),
		id = "script" + now();

	div.style.display = "none";
	div.innerHTML = "   <link/><table></table><a href='/a' style='color:red;float:left;opacity:.55;'>a</a><input type='checkbox'/>";

	var all = div.getElementsByTagName("*"),
		a = div.getElementsByTagName("a")[0];

	// Can't get basic test support
	if ( !all || !all.length || !a ) {
		return;
	}

	jQuery.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 insted)
		style: /red/.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: /^0.55$/.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: div.getElementsByTagName("input")[0].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: document.createElement("select").appendChild( document.createElement("option") ).selected,

		// Will be defined later
		checkClone: false,
		scriptEval: false,
		noCloneEvent: true,
		boxModel: null
	};

	script.type = "text/javascript";
	try {
		script.appendChild( document.createTextNode( "window." + id + "=1;" ) );
	} catch(e) {}

	root.insertBefore( script, root.firstChild );

	// Make sure that the execution of code works by injecting a script
	// tag with appendChild/createTextNode
	// (IE doesn't support this, fails, and uses .text instead)
	if ( window[ id ] ) {
		jQuery.support.scriptEval = true;
		delete window[ id ];
	}

	root.removeChild( script );

	if ( div.attachEvent && div.fireEvent ) {
		div.attachEvent("onclick", function click() {
			// Cloning a node shouldn't copy over any
			// bound event handlers (IE does this)
			jQuery.support.noCloneEvent = false;
			div.detachEvent("onclick", click);
		});
		div.cloneNode(true).fireEvent("onclick");
	}

	div = document.createElement("div");
	div.innerHTML = "<input type='radio' name='radiotest' checked='checked'/>";

	var fragment = document.createDocumentFragment();
	fragment.appendChild( div.firstChild );

	// WebKit doesn't clone checked state correctly in fragments
	jQuery.support.checkClone = fragment.cloneNode(true).cloneNode(true).lastChild.checked;

	// Figure out if the W3C box model works as expected
	// document.body must exist before we can do this
	jQuery(function() {
		var div = document.createElement("div");
		div.style.width = div.style.paddingLeft = "1px";

		document.body.appendChild( div );
		jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
		document.body.removeChild( div ).style.display = 'none';
		div = null;
	});

	// Technique from Juriy Zaytsev
	// http://thinkweb2.com/projects/prototype/detecting-event-support-without-browser-sniffing/
	var eventSupported = function( eventName ) { 
		var el = document.createElement("div"); 
		eventName = "on" + eventName; 

		var isSupported = (eventName in el); 
		if ( !isSupported ) { 
			el.setAttribute(eventName, "return;"); 
			isSupported = typeof el[eventName] === "function"; 
		} 
		el = null; 

		return isSupported; 
	};
	
	jQuery.support.submitBubbles = eventSupported("submit");
	jQuery.support.changeBubbles = eventSupported("change");

	// release memory in IE
	root = script = div = all = a = null;
})();

jQuery.props = {
	"for": "htmlFor",
	"class": "className",
	readonly: "readOnly",
	maxlength: "maxLength",
	cellspacing: "cellSpacing",
	rowspan: "rowSpan",
	colspan: "colSpan",
	tabindex: "tabIndex",
	usemap: "useMap",
	frameborder: "frameBorder"
};
var expando = "jQuery" + now(), uuid = 0, windowData = {};
var emptyObject = {};

jQuery.extend({
	cache: {},
	
	expando:expando,

	// The following elements throw uncatchable exceptions if you
	// attempt to add expando properties to them.
	noData: {
		"embed": true,
		"object": true,
		"applet": true
	},

	data: function( elem, name, data ) {
		if ( elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()] ) {
			return;
		}

		elem = elem == window ?
			windowData :
			elem;

		var id = elem[ expando ], cache = jQuery.cache, thisCache;

		// Handle the case where there's no name immediately
		if ( !name && !id ) {
			return null;
		}

		// Compute a unique ID for the element
		if ( !id ) { 
			id = ++uuid;
		}

		// Avoid generating a new cache unless none exists and we
		// want to manipulate it.
		if ( typeof name === "object" ) {
			elem[ expando ] = id;
			thisCache = cache[ id ] = jQuery.extend(true, {}, name);
		} else if ( cache[ id ] ) {
			thisCache = cache[ id ];
		} else if ( typeof data === "undefined" ) {
			thisCache = emptyObject;
		} else {
			thisCache = cache[ id ] = {};
		}

		// Prevent overriding the named cache with undefined values
		if ( data !== undefined ) {
			elem[ expando ] = id;
			thisCache[ name ] = data;
		}

		return typeof name === "string" ? thisCache[ name ] : thisCache;
	},

	removeData: function( elem, name ) {
		if ( elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()] ) {
			return;
		}

		elem = elem == window ?
			windowData :
			elem;

		var id = elem[ expando ], cache = jQuery.cache, thisCache = cache[ id ];

		// If we want to remove a specific section of the element's data
		if ( name ) {
			if ( thisCache ) {
				// Remove the section of cache data
				delete thisCache[ name ];

				// If we've removed all the data, remove the element's cache
				if ( jQuery.isEmptyObject(thisCache) ) {
					jQuery.removeData( elem );
				}
			}

		// Otherwise, we want to remove all of the element's data
		} else {
			// Clean up the element expando
			try {
				delete elem[ expando ];
			} catch( e ) {
				// IE has trouble directly removing the expando
				// but it's ok with using removeAttribute
				if ( elem.removeAttribute ) {
					elem.removeAttribute( expando );
				}
			}

			// Completely remove the data cache
			delete cache[ id ];
		}
	}
});

jQuery.fn.extend({
	data: function( key, value ) {
		if ( typeof key === "undefined" && this.length ) {
			return jQuery.data( this[0] );

		} else if ( typeof key === "object" ) {
			return this.each(function() {
				jQuery.data( this, key );
			});
		}

		var parts = key.split(".");
		parts[1] = parts[1] ? "." + parts[1] : "";

		if ( value === undefined ) {
			var data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]);

			if ( data === undefined && this.length ) {
				data = jQuery.data( this[0], key );
			}
			return data === undefined && parts[1] ?
				this.data( parts[0] ) :
				data;
		} else {
			return this.trigger("setData" + parts[1] + "!", [parts[0], value]).each(function() {
				jQuery.data( this, key, value );
			});
		}
	},

	removeData: function( key ) {
		return this.each(function() {
			jQuery.removeData( this, key );
		});
	}
});
jQuery.extend({
	queue: function( elem, type, data ) {
		if ( !elem ) {
			return;
		}

		type = (type || "fx") + "queue";
		var q = jQuery.data( elem, type );

		// Speed up dequeue by getting out quickly if this is just a lookup
		if ( !data ) {
			return q || [];
		}

		if ( !q || jQuery.isArray(data) ) {
			q = jQuery.data( elem, type, jQuery.makeArray(data) );

		} else {
			q.push( data );
		}

		return q;
	},

	dequeue: function( elem, type ) {
		type = type || "fx";

		var queue = jQuery.queue( elem, type ), fn = queue.shift();

		// If the fx queue is dequeued, always remove the progress sentinel
		if ( fn === "inprogress" ) {
			fn = queue.shift();
		}

		if ( fn ) {
			// Add a progress sentinel to prevent the fx queue from being
			// automatically dequeued
			if ( type === "fx" ) {
				queue.unshift("inprogress");
			}

			fn.call(elem, function() {
				jQuery.dequeue(elem, type);
			});
		}
	}
});

jQuery.fn.extend({
	queue: function( type, data ) {
		if ( typeof type !== "string" ) {
			data = type;
			type = "fx";
		}

		if ( data === undefined ) {
			return jQuery.queue( this[0], type );
		}
		return this.each(function( i, elem ) {
			var queue = jQuery.queue( this, type, data );

			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() {
			var elem = this;
			setTimeout(function() {
				jQuery.dequeue( elem, type );
			}, time );
		});
	},

	clearQueue: function( type ) {
		return this.queue( type || "fx", [] );
	}
});
var rclass = /[\n\t]/g,
	rspace = /\s+/,
	rreturn = /\r/g,
	rspecialurl = /href|src|style/,
	rtype = /(button|input)/i,
	rfocusable = /(button|input|object|select|textarea)/i,
	rclickable = /^(a|area)$/i,
	rradiocheck = /radio|checkbox/;

jQuery.fn.extend({
	attr: function( name, value ) {
		return access( this, name, value, true, jQuery.attr );
	},

	removeAttr: function( name, fn ) {
		return this.each(function(){
			jQuery.attr( this, name, "" );
			if ( this.nodeType === 1 ) {
				this.removeAttribute( name );
			}
		});
	},

	addClass: function( value ) {
		if ( jQuery.isFunction(value) ) {
			return this.each(function(i) {
				var self = jQuery(this);
				self.addClass( value.call(this, i, self.attr("class")) );
			});
		}

		if ( value && typeof value === "string" ) {
			var classNames = (value || "").split( rspace );

			for ( var i = 0, l = this.length; i < l; i++ ) {
				var elem = this[i];

				if ( elem.nodeType === 1 ) {
					if ( !elem.className ) {
						elem.className = value;

					} else {
						var className = " " + elem.className + " ";
						for ( var c = 0, cl = classNames.length; c < cl; c++ ) {
							if ( className.indexOf( " " + classNames[c] + " " ) < 0 ) {
								elem.className += " " + classNames[c];
							}
						}
					}
				}
			}
		}

		return this;
	},

	removeClass: function( value ) {
		if ( jQuery.isFunction(value) ) {
			return this.each(function(i) {
				var self = jQuery(this);
				self.removeClass( value.call(this, i, self.attr("class")) );
			});
		}

		if ( (value && typeof value === "string") || value === undefined ) {
			var classNames = (value || "").split(rspace);

			for ( var i = 0, l = this.length; i < l; i++ ) {
				var elem = this[i];

				if ( elem.nodeType === 1 && elem.className ) {
					if ( value ) {
						var className = (" " + elem.className + " ").replace(rclass, " ");
						for ( var c = 0, cl = classNames.length; c < cl; c++ ) {
							className = className.replace(" " + classNames[c] + " ", " ");
						}
						elem.className = className.substring(1, className.length - 1);

					} else {
						elem.className = "";
					}
				}
			}
		}

		return this;
	},

	toggleClass: function( value, stateVal ) {
		var type = typeof value, isBool = typeof stateVal === "boolean";

		if ( jQuery.isFunction( value ) ) {
			return this.each(function(i) {
				var self = jQuery(this);
				self.toggleClass( value.call(this, i, self.attr("class"), 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( rspace );

				while ( (className = classNames[ i++ ]) ) {
					// check each className given, space seperated 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 + " ";
		for ( var i = 0, l = this.length; i < l; i++ ) {
			if ( (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) > -1 ) {
				return true;
			}
		}

		return false;
	},

	val: function( value ) {
		if ( value === undefined ) {
			var elem = this[0];

			if ( elem ) {
				if ( jQuery.nodeName( elem, "option" ) ) {
					return (elem.attributes.value || {}).specified ? elem.value : elem.text;
				}

				// We need to handle select boxes special
				if ( jQuery.nodeName( elem, "select" ) ) {
					var index = elem.selectedIndex,
						values = [],
						options = elem.options,
						one = elem.type === "select-one";

					// Nothing was selected
					if ( index < 0 ) {
						return null;
					}

					// Loop through all the selected options
					for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
						var option = options[ i ];

						if ( option.selected ) {
							// Get the specifc 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;
				}

				// Handle the case where in Webkit "" is returned instead of "on" if a value isn't specified
				if ( rradiocheck.test( elem.type ) && !jQuery.support.checkOn ) {
					return elem.getAttribute("value") === null ? "on" : elem.value;
				}
				

				// Everything else, we just grab the value
				return (elem.value || "").replace(rreturn, "");

			}

			return undefined;
		}

		var isFunction = jQuery.isFunction(value);

		return this.each(function(i) {
			var self = jQuery(this), val = value;

			if ( this.nodeType !== 1 ) {
				return;
			}

			if ( isFunction ) {
				val = value.call(this, i, self.val());
			}

			// Typecast each time if the value is a Function and the appended
			// value is therefore different each time.
			if ( typeof val === "number" ) {
				val += "";
			}

			if ( jQuery.isArray(val) && rradiocheck.test( this.type ) ) {
				this.checked = jQuery.inArray( self.val(), val ) >= 0;

			} else if ( jQuery.nodeName( this, "select" ) ) {
				var values = jQuery.makeArray(val);

				jQuery( "option", this ).each(function() {
					this.selected = jQuery.inArray( jQuery(this).val(), values ) >= 0;
				});

				if ( !values.length ) {
					this.selectedIndex = -1;
				}

			} else {
				this.value = val;
			}
		});
	}
});

jQuery.extend({
	attrFn: {
		val: true,
		css: true,
		html: true,
		text: true,
		data: true,
		width: true,
		height: true,
		offset: true
	},
		
	attr: function( elem, name, value, pass ) {
		// don't set attributes on text and comment nodes
		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
			return undefined;
		}

		if ( pass && name in jQuery.attrFn ) {
			return jQuery(elem)[name](value);
		}

		var notxml = elem.nodeType !== 1 || !jQuery.isXMLDoc( elem ),
			// Whether we are setting (or getting)
			set = value !== undefined;

		// Try to normalize/fix the name
		name = notxml && jQuery.props[ name ] || name;

		// Only do all the following if this is a node (faster for style)
		if ( elem.nodeType === 1 ) {
			// These attributes require special treatment
			var special = rspecialurl.test( name );

			// Safari mis-reports the default selected property of an option
			// Accessing the parent's selectedIndex property fixes it
			if ( name === "selected" && !jQuery.support.optSelected ) {
				var parent = elem.parentNode;
				if ( parent ) {
					parent.selectedIndex;
	
					// Make sure that it also works with optgroups, see #5701
					if ( parent.parentNode ) {
						parent.parentNode.selectedIndex;
					}
				}
			}

			// If applicable, access the attribute via the DOM 0 way
			if ( name in elem && notxml && !special ) {
				if ( set ) {
					// We can't allow the type property to be changed (since it causes problems in IE)
					if ( name === "type" && rtype.test( elem.nodeName ) && elem.parentNode ) {
						jQuery.error( "type property can't be changed" );
					}

					elem[ name ] = value;
				}

				// browsers index elements by id/name on forms, give priority to attributes.
				if ( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) ) {
					return elem.getAttributeNode( name ).nodeValue;
				}

				// 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/
				if ( name === "tabIndex" ) {
					var attributeNode = elem.getAttributeNode( "tabIndex" );

					return attributeNode && attributeNode.specified ?
						attributeNode.value :
						rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ?
							0 :
							undefined;
				}

				return elem[ name ];
			}

			if ( !jQuery.support.style && notxml && name === "style" ) {
				if ( set ) {
					elem.style.cssText = "" + value;
				}

				return elem.style.cssText;
			}

			if ( set ) {
				// convert the value to a string (all browsers do this but IE) see #1070
				elem.setAttribute( name, "" + value );
			}

			var attr = !jQuery.support.hrefNormalized && notxml && special ?
					// Some attributes require a special call on IE
					elem.getAttribute( name, 2 ) :
					elem.getAttribute( name );

			// Non-existent attributes return null, we normalize to undefined
			return attr === null ? undefined : attr;
		}

		// elem is actually elem.style ... set the style
		// Using attr for specific style information is now deprecated. Use style insead.
		return jQuery.style( elem, name, value );
	}
});
var fcleanup = function( nm ) {
	return nm.replace(/[^\w\s\.\|`]/g, function( ch ) {
		return "\\" + ch;
	});
};

/*
 * A number of helper functions used for managing events.
 * Many of the ideas behind this code originated from
 * Dean Edwards' addEvent library.
 */
jQuery.event = {

	// Bind an event to an element
	// Original by Dean Edwards
	add: function( elem, types, handler, data ) {
		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
			return;
		}

		// For whatever reason, IE has trouble passing the window object
		// around, causing it to be cloned in the process
		if ( elem.setInterval && ( elem !== window && !elem.frameElement ) ) {
			elem = window;
		}

		// Make sure that the function being executed has a unique ID
		if ( !handler.guid ) {
			handler.guid = jQuery.guid++;
		}

		// if data is passed, bind to handler
		if ( data !== undefined ) {
			// Create temporary function pointer to original handler
			var fn = handler;

			// Create unique handler function, wrapped around original handler
			handler = jQuery.proxy( fn );

			// Store data in unique handler
			handler.data = data;
		}

		// Init the element's event structure
		var events = jQuery.data( elem, "events" ) || jQuery.data( elem, "events", {} ),
			handle = jQuery.data( elem, "handle" ), eventHandle;

		if ( !handle ) {
			eventHandle = function() {
				// Handle the second event of a trigger and when
				// an event is called after a page has unloaded
				return typeof jQuery !== "undefined" && !jQuery.event.triggered ?
					jQuery.event.handle.apply( eventHandle.elem, arguments ) :
					undefined;
			};

			handle = jQuery.data( elem, "handle", eventHandle );
		}

		// If no handle is found then we must be trying to bind to one of the
		// banned noData elements
		if ( !handle ) {
			return;
		}

		// Add elem as a property of the handle function
		// This is to prevent a memory leak with non-native
		// event in IE.
		handle.elem = elem;

		// Handle multiple events separated by a space
		// jQuery(...).bind("mouseover mouseout", fn);
		types = types.split( /\s+/ );

		var type, i = 0;

		while ( (type = types[ i++ ]) ) {
			// Namespaced event handlers
			var namespaces = type.split(".");
			type = namespaces.shift();

			if ( i > 1 ) {
				handler = jQuery.proxy( handler );

				if ( data !== undefined ) {
					handler.data = data;
				}
			}

			handler.type = namespaces.slice(0).sort().join(".");

			// Get the current list of functions bound to this event
			var handlers = events[ type ],
				special = this.special[ type ] || {};

			// Init the event handler queue
			if ( !handlers ) {
				handlers = events[ type ] = {};

				// Check for a special event handler
				// Only use addEventListener/attachEvent if the special
				// events handler returns false
				if ( !special.setup || special.setup.call( elem, data, namespaces, handler) === false ) {
					// Bind the global event handler to the element
					if ( elem.addEventListener ) {
						elem.addEventListener( type, handle, false );
					} else if ( elem.attachEvent ) {
						elem.attachEvent( "on" + type, handle );
					}
				}
			}
			
			if ( special.add ) { 
				var modifiedHandler = special.add.call( elem, handler, data, namespaces, handlers ); 
				if ( modifiedHandler && jQuery.isFunction( modifiedHandler ) ) { 
					modifiedHandler.guid = modifiedHandler.guid || handler.guid; 
					modifiedHandler.data = modifiedHandler.data || handler.data; 
					modifiedHandler.type = modifiedHandler.type || handler.type; 
					handler = modifiedHandler; 
				} 
			} 
			
			// Add the function to the element's handler list
			handlers[ handler.guid ] = handler;

			// Keep track of which events have been used, for global triggering
			this.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 ) {
		// don't do events on text and comment nodes
		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
			return;
		}

		var events = jQuery.data( elem, "events" ), ret, type, fn;

		if ( events ) {
			// Unbind all events for the element
			if ( types === undefined || (typeof types === "string" && types.charAt(0) === ".") ) {
				for ( type in events ) {
					this.remove( elem, type + (types || "") );
				}
			} else {
				// types is actually an event object here
				if ( types.type ) {
					handler = types.handler;
					types = types.type;
				}

				// Handle multiple events separated by a space
				// jQuery(...).unbind("mouseover mouseout", fn);
				types = types.split(/\s+/);
				var i = 0;
				while ( (type = types[ i++ ]) ) {
					// Namespaced event handlers
					var namespaces = type.split(".");
					type = namespaces.shift();
					var all = !namespaces.length,
						cleaned = jQuery.map( namespaces.slice(0).sort(), fcleanup ),
						namespace = new RegExp("(^|\\.)" + cleaned.join("\\.(?:.*\\.)?") + "(\\.|$)"),
						special = this.special[ type ] || {};

					if ( events[ type ] ) {
						// remove the given handler for the given type
						if ( handler ) {
							fn = events[ type ][ handler.guid ];
							delete events[ type ][ handler.guid ];

						// remove all handlers for the given type
						} else {
							for ( var handle in events[ type ] ) {
								// Handle the removal of namespaced events
								if ( all || namespace.test( events[ type ][ handle ].type ) ) {
									delete events[ type ][ handle ];
								}
							}
						}

						if ( special.remove ) {
							special.remove.call( elem, namespaces, fn);
						}

						// remove generic event handler if no more handlers exist
						for ( ret in events[ type ] ) {
							break;
						}
						if ( !ret ) {
							if ( !special.teardown || special.teardown.call( elem, namespaces ) === false ) {
								if ( elem.removeEventListener ) {
									elem.removeEventListener( type, jQuery.data( elem, "handle" ), false );
								} else if ( elem.detachEvent ) {
									elem.detachEvent( "on" + type, jQuery.data( elem, "handle" ) );
								}
							}
							ret = null;
							delete events[ type ];
						}
					}
				}
			}

			// Remove the expando if it's no longer used
			for ( ret in events ) {
				break;
			}
			if ( !ret ) {
				var handle = jQuery.data( elem, "handle" );
				if ( handle ) {
					handle.elem = null;
				}
				jQuery.removeData( elem, "events" );
				jQuery.removeData( elem, "handle" );
			}
		}
	},

	// bubbling is internal
	trigger: function( event, data, elem /*, bubbling */ ) {
		// Event object or event type
		var type = event.type || event,
			bubbling = arguments[3];

		if ( !bubbling ) {
			event = typeof event === "object" ?
				// jQuery.Event object
				event[expando] ? event :
				// Object literal
				jQuery.extend( jQuery.Event(type), event ) :
				// Just the event type (string)
				jQuery.Event(type);

			if ( type.indexOf("!") >= 0 ) {
				event.type = type = type.slice(0, -1);
				event.exclusive = true;
			}

			// Handle a global trigger
			if ( !elem ) {
				// Don't bubble custom events when global (to avoid too much overhead)
				event.stopPropagation();

				// Only trigger if we've ever bound an event for it
				if ( this.global[ type ] ) {
					jQuery.each( jQuery.cache, function() {
						if ( this.events && this.events[type] ) {
							jQuery.event.trigger( event, data, this.handle.elem );
						}
					});
				}
			}

			// Handle triggering a single element

			// don't do events on text and comment nodes
			if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
				return undefined;
			}

			// Clean up in case it is reused
			event.result = undefined;
			event.target = elem;

			// Clone the incoming data, if any
			data = jQuery.makeArray( data );
			data.unshift( event );
		}

		event.currentTarget = elem;

		// Trigger the event, it is assumed that "handle" is a function
		var handle = jQuery.data( elem, "handle" );
		if ( handle ) {
			handle.apply( elem, data );
		}

		var parent = elem.parentNode || elem.ownerDocument;

		// Trigger an inline bound script
		try {
			if ( !(elem && elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()]) ) {
				if ( elem[ "on" + type ] && elem[ "on" + type ].apply( elem, data ) === false ) {
					event.result = false;
				}
			}

		// prevent IE from throwing an error for some elements with some event types, see #3533
		} catch (e) {}

		if ( !event.isPropagationStopped() && parent ) {
			jQuery.event.trigger( event, data, parent, true );

		} else if ( !event.isDefaultPrevented() ) {
			var target = event.target, old,
				isClick = jQuery.nodeName(target, "a") && type === "click";

			if ( !isClick && !(target && target.nodeName && jQuery.noData[target.nodeName.toLowerCase()]) ) {
				try {
					if ( target[ type ] ) {
						// Make sure that we don't accidentally re-trigger the onFOO events
						old = target[ "on" + type ];

						if ( old ) {
							target[ "on" + type ] = null;
						}

						this.triggered = true;
						target[ type ]();
					}

				// prevent IE from throwing an error for some elements with some event types, see #3533
				} catch (e) {}

				if ( old ) {
					target[ "on" + type ] = old;
				}

				this.triggered = false;
			}
		}
	},

	handle: function( event ) {
		// returned undefined or false
		var all, handlers;

		event = arguments[0] = jQuery.event.fix( event || window.event );
		event.currentTarget = this;

		// Namespaced event handlers
		var namespaces = event.type.split(".");
		event.type = namespaces.shift();

		// Cache this now, all = true means, any handler
		all = !namespaces.length && !event.exclusive;

		var namespace = new RegExp("(^|\\.)" + namespaces.slice(0).sort().join("\\.(?:.*\\.)?") + "(\\.|$)");

		handlers = ( jQuery.data(this, "events") || {} )[ event.type ];

		for ( var j in handlers ) {
			var handler = handlers[ j ];

			// Filter the functions by class
			if ( all || namespace.test(handler.type) ) {
				// Pass in a reference to the handler function itself
				// So that we can later remove it
				event.handler = handler;
				event.data = handler.data;

				var ret = handler.apply( this, arguments );

				if ( ret !== undefined ) {
					event.result = ret;
					if ( ret === false ) {
						event.preventDefault();
						event.stopPropagation();
					}
				}

				if ( event.isImmediatePropagationStopped() ) {
					break;
				}

			}
		}

		return event.result;
	},

	props: "altKey attrChange attrName bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase fromElement handler keyCode layerX layerY metaKey newValue offsetX offsetY originalTarget pageX pageY prevValue relatedNode relatedTarget screenX screenY shiftKey srcElement target toElement view wheelDelta which".split(" "),

	fix: function( event ) {
		if ( event[ expando ] ) {
			return event;
		}

		// store a copy of the original event object
		// and "clone" to set read-only properties
		var originalEvent = event;
		event = jQuery.Event( originalEvent );

		for ( var i = this.props.length, prop; i; ) {
			prop = this.props[ --i ];
			event[ prop ] = originalEvent[ prop ];
		}

		// Fix target property, if necessary
		if ( !event.target ) {
			event.target = event.srcElement || document; // Fixes #1925 where srcElement might not be defined either
		}

		// check if target is a textnode (safari)
		if ( event.target.nodeType === 3 ) {
			event.target = event.target.parentNode;
		}

		// Add relatedTarget, if necessary
		if ( !event.relatedTarget && event.fromElement ) {
			event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
		}

		// Calculate pageX/Y if missing and clientX/Y available
		if ( event.pageX == null && event.clientX != null ) {
			var doc = document.documentElement, body = document.body;
			event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
			event.pageY = event.clientY + (doc && doc.scrollTop  || body && body.scrollTop  || 0) - (doc && doc.clientTop  || body && body.clientTop  || 0);
		}

		// Add which for key events
		if ( !event.which && ((event.charCode || event.charCode === 0) ? event.charCode : event.keyCode) ) {
			event.which = event.charCode || event.keyCode;
		}

		// Add metaKey to non-Mac browsers (use ctrl for PC's and Meta for Macs)
		if ( !event.metaKey && event.ctrlKey ) {
			event.metaKey = event.ctrlKey;
		}

		// Add which for click: 1 === left; 2 === middle; 3 === right
		// Note: button is not normalized, so don't use it
		if ( !event.which && event.button !== undefined ) {
			event.which = (event.button & 1 ? 1 : ( event.button & 2 ? 3 : ( event.button & 4 ? 2 : 0 ) ));
		}

		return event;
	},

	// Deprecated, use jQuery.guid instead
	guid: 1E8,

	// Deprecated, use jQuery.proxy instead
	proxy: jQuery.proxy,

	special: {
		ready: {
			// Make sure the ready event is setup
			setup: jQuery.bindReady,
			teardown: jQuery.noop
		},

		live: {
			add: function( proxy, data, namespaces, live ) {
				jQuery.extend( proxy, data || {} );

				proxy.guid += data.selector + data.live; 
				data.liveProxy = proxy;

				jQuery.event.add( this, data.live, liveHandler, data ); 
				
			},

			remove: function( namespaces ) {
				if ( namespaces.length ) {
					var remove = 0, name = new RegExp("(^|\\.)" + namespaces[0] + "(\\.|$)");

					jQuery.each( (jQuery.data(this, "events").live || {}), function() {
						if ( name.test(this.type) ) {
							remove++;
						}
					});

					if ( remove < 1 ) {
						jQuery.event.remove( this, namespaces[0], liveHandler );
					}
				}
			},
			special: {}
		},
		beforeunload: {
			setup: function( data, namespaces, fn ) {
				// We only want to do this special case on windows
				if ( this.setInterval ) {
					this.onbeforeunload = fn;
				}

				return false;
			},
			teardown: function( namespaces, fn ) {
				if ( this.onbeforeunload === fn ) {
					this.onbeforeunload = null;
				}
			}
		}
	}
};

jQuery.Event = function( src ) {
	// Allow instantiation without the 'new' keyword
	if ( !this.preventDefault ) {
		return new jQuery.Event( src );
	}

	// Event object
	if ( src && src.type ) {
		this.originalEvent = src;
		this.type = src.type;
	// Event type
	} else {
		this.type = src;
	}

	// timeStamp is buggy for some events on Firefox(#3843)
	// So we won't rely on the native value
	this.timeStamp = now();

	// Mark it as fixed
	this[ 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)
		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
};

// Checks if an event happened on an element within another element
// Used in jQuery.event.special.mouseenter and mouseleave handlers
var withinElement = function( event ) {
	// Check if mouse(over|out) are still within the same parent element
	var parent = event.relatedTarget;

	// Traverse up the tree
	while ( parent && parent !== this ) {
		// Firefox sometimes assigns relatedTarget a XUL element
		// which we cannot access the parentNode property of
		try {
			parent = parent.parentNode;

		// assuming we've left the element since we most likely mousedover a xul element
		} catch(e) {
			break;
		}
	}

	if ( parent !== this ) {
		// set the correct event type
		event.type = event.data;

		// handle event if we actually just moused on to a non sub-element
		jQuery.event.handle.apply( this, arguments );
	}

},

// In case of event delegation, we only need to rename the event.type,
// liveHandler will take care of the rest.
delegate = function( event ) {
	event.type = event.data;
	jQuery.event.handle.apply( this, arguments );
};

// Create mouseenter and mouseleave events
jQuery.each({
	mouseenter: "mouseover",
	mouseleave: "mouseout"
}, function( orig, fix ) {
	jQuery.event.special[ orig ] = {
		setup: function( data ) {
			jQuery.event.add( this, fix, data && data.selector ? delegate : withinElement, orig );
		},
		teardown: function( data ) {
			jQuery.event.remove( this, fix, data && data.selector ? delegate : withinElement );
		}
	};
});

// submit delegation
if ( !jQuery.support.submitBubbles ) {

jQuery.event.special.submit = {
	setup: function( data, namespaces, fn ) {
		if ( this.nodeName.toLowerCase() !== "form" ) {
			jQuery.event.add(this, "click.specialSubmit." + fn.guid, function( e ) {
				var elem = e.target, type = elem.type;

				if ( (type === "submit" || type === "image") && jQuery( elem ).closest("form").length ) {
					return trigger( "submit", this, arguments );
				}
			});
	 
			jQuery.event.add(this, "keypress.specialSubmit." + fn.guid, function( e ) {
				var elem = e.target, type = elem.type;

				if ( (type === "text" || type === "password") && jQuery( elem ).closest("form").length && e.keyCode === 13 ) {
					return trigger( "submit", this, arguments );
				}
			});

		} else {
			return false;
		}
	},

	remove: function( namespaces, fn ) {
		jQuery.event.remove( this, "click.specialSubmit" + (fn ? "."+fn.guid : "") );
		jQuery.event.remove( this, "keypress.specialSubmit" + (fn ? "."+fn.guid : "") );
	}
};

}

// change delegation, happens here so we have bind.
if ( !jQuery.support.changeBubbles ) {

var formElems = /textarea|input|select/i;

function getVal( elem ) {
	var type = elem.type, val = elem.value;

	if ( type === "radio" || type === "checkbox" ) {
		val = elem.checked;

	} else if ( type === "select-multiple" ) {
		val = elem.selectedIndex > -1 ?
			jQuery.map( elem.options, function( elem ) {
				return elem.selected;
			}).join("-") :
			"";

	} else if ( elem.nodeName.toLowerCase() === "select" ) {
		val = elem.selectedIndex;
	}

	return val;
}

function testChange( e ) {
		var elem = e.target, data, val;

		if ( !formElems.test( elem.nodeName ) || elem.readOnly ) {
			return;
		}

		data = jQuery.data( elem, "_change_data" );
		val = getVal(elem);

		// the current data will be also retrieved by beforeactivate
		if ( e.type !== "focusout" || elem.type !== "radio" ) {
			jQuery.data( elem, "_change_data", val );
		}
		
		if ( data === undefined || val === data ) {
			return;
		}

		if ( data != null || val ) {
			e.type = "change";
			return jQuery.event.trigger( e, arguments[1], elem );
		}
}

jQuery.event.special.change = {
	filters: {
		focusout: testChange, 

		click: function( e ) {
			var elem = e.target, type = elem.type;

			if ( type === "radio" || type === "checkbox" || elem.nodeName.toLowerCase() === "select" ) {
				return testChange.call( this, e );
			}
		},

		// Change has to be called before submit
		// Keydown will be called before keypress, which is used in submit-event delegation
		keydown: function( e ) {
			var elem = e.target, type = elem.type;

			if ( (e.keyCode === 13 && elem.nodeName.toLowerCase() !== "textarea") ||
				(e.keyCode === 32 && (type === "checkbox" || type === "radio")) ||
				type === "select-multiple" ) {
				return testChange.call( this, e );
			}
		},

		// Beforeactivate happens also before the previous element is blurred
		// with this event you can't trigger a change event, but you can store
		// information/focus[in] is not needed anymore
		beforeactivate: function( e ) {
			var elem = e.target;

			if ( elem.nodeName.toLowerCase() === "input" && elem.type === "radio" ) {
				jQuery.data( elem, "_change_data", getVal(elem) );
			}
		}
	},
	setup: function( data, namespaces, fn ) {
		for ( var type in changeFilters ) {
			jQuery.event.add( this, type + ".specialChange." + fn.guid, changeFilters[type] );
		}

		return formElems.test( this.nodeName );
	},
	remove: function( namespaces, fn ) {
		for ( var type in changeFilters ) {
			jQuery.event.remove( this, type + ".specialChange" + (fn ? "."+fn.guid : ""), changeFilters[type] );
		}

		return formElems.test( this.nodeName );
	}
};

var changeFilters = jQuery.event.special.change.filters;

}

function trigger( type, elem, args ) {
	args[0].type = type;
	return jQuery.event.handle.apply( elem, args );
}

// Create "bubbling" focus and blur events
if ( document.addEventListener ) {
	jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {
		jQuery.event.special[ fix ] = {
			setup: function() {
				this.addEventListener( orig, handler, true );
			}, 
			teardown: function() { 
				this.removeEventListener( orig, handler, true );
			}
		};

		function handler( e ) { 
			e = jQuery.event.fix( e );
			e.type = fix;
			return jQuery.event.handle.call( this, e );
		}
	});
}

jQuery.each(["bind", "one"], function( i, name ) {
	jQuery.fn[ name ] = function( type, data, fn ) {
		// Handle object literals
		if ( typeof type === "object" ) {
			for ( var key in type ) {
				this[ name ](key, data, type[key], fn);
			}
			return this;
		}
		
		if ( jQuery.isFunction( data ) ) {
			fn = data;
			data = undefined;
		}

		var handler = name === "one" ? jQuery.proxy( fn, function( event ) {
			jQuery( this ).unbind( event, handler );
			return fn.apply( this, arguments );
		}) : fn;

		return type === "unload" && name !== "one" ?
			this.one( type, data, fn ) :
			this.each(function() {
				jQuery.event.add( this, type, handler, data );
			});
	};
});

jQuery.fn.extend({
	unbind: function( type, fn ) {
		// Handle object literals
		if ( typeof type === "object" && !type.preventDefault ) {
			for ( var key in type ) {
				this.unbind(key, type[key]);
			}
			return this;
		}

		return this.each(function() {
			jQuery.event.remove( this, type, fn );
		});
	},
	trigger: function( type, data ) {
		return this.each(function() {
			jQuery.event.trigger( type, data, this );
		});
	},

	triggerHandler: function( type, data ) {
		if ( this[0] ) {
			var event = jQuery.Event( type );
			event.preventDefault();
			event.stopPropagation();
			jQuery.event.trigger( event, data, this[0] );
			return event.result;
		}
	},

	toggle: function( fn ) {
		// Save reference to arguments for access in closure
		var args = arguments, i = 1;

		// link all the functions, so any of them can unbind this click handler
		while ( i < args.length ) {
			jQuery.proxy( fn, args[ i++ ] );
		}

		return this.click( jQuery.proxy( fn, 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;
		}));
	},

	hover: function( fnOver, fnOut ) {
		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
	}
});

jQuery.each(["live", "die"], function( i, name ) {
	jQuery.fn[ name ] = function( types, data, fn ) {
		var type, i = 0;

		if ( jQuery.isFunction( data ) ) {
			fn = data;
			data = undefined;
		}

		types = (types || "").split( /\s+/ );

		while ( (type = types[ i++ ]) != null ) {
			type = type === "focus" ? "focusin" : // focus --> focusin
					type === "blur" ? "focusout" : // blur --> focusout
					type === "hover" ? types.push("mouseleave") && "mouseenter" : // hover support
					type;
			
			if ( name === "live" ) {
				// bind live handler
				jQuery( this.context ).bind( liveConvert( type, this.selector ), {
					data: data, selector: this.selector, live: type
				}, fn );

			} else {
				// unbind live handler
				jQuery( this.context ).unbind( liveConvert( type, this.selector ), fn ? { guid: fn.guid + this.selector + type } : null );
			}
		}
		
		return this;
	}
});

function liveHandler( event ) {
	var stop, elems = [], selectors = [], args = arguments,
		related, match, fn, elem, j, i, l, data,
		live = jQuery.extend({}, jQuery.data( this, "events" ).live);

	// Make sure we avoid non-left-click bubbling in Firefox (#3861)
	if ( event.button && event.type === "click" ) {
		return;
	}

	for ( j in live ) {
		fn = live[j];
		if ( fn.live === event.type ||
				fn.altLive && jQuery.inArray(event.type, fn.altLive) > -1 ) {

			data = fn.data;
			if ( !(data.beforeFilter && data.beforeFilter[event.type] && 
					!data.beforeFilter[event.type](event)) ) {
				selectors.push( fn.selector );
			}
		} else {
			delete live[j];
		}
	}

	match = jQuery( event.target ).closest( selectors, event.currentTarget );

	for ( i = 0, l = match.length; i < l; i++ ) {
		for ( j in live ) {
			fn = live[j];
			elem = match[i].elem;
			related = null;

			if ( match[i].selector === fn.selector ) {
				// Those two events require additional checking
				if ( fn.live === "mouseenter" || fn.live === "mouseleave" ) {
					related = jQuery( event.relatedTarget ).closest( fn.selector )[0];
				}

				if ( !related || related !== elem ) {
					elems.push({ elem: elem, fn: fn });
				}
			}
		}
	}

	for ( i = 0, l = elems.length; i < l; i++ ) {
		match = elems[i];
		event.currentTarget = match.elem;
		event.data = match.fn.data;
		if ( match.fn.apply( match.elem, args ) === false ) {
			stop = false;
			break;
		}
	}

	return stop;
}

function liveConvert( type, selector ) {
	return "live." + (type ? type + "." : "") + selector.replace(/\./g, "`").replace(/ /g, "&");
}

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").split(" "), function( i, name ) {

	// Handle event binding
	jQuery.fn[ name ] = function( fn ) {
		return fn ? this.bind( name, fn ) : this.trigger( name );
	};

	if ( jQuery.attrFn ) {
		jQuery.attrFn[ name ] = true;
	}
});

// Prevent memory leaks in IE
// Window isn't included so as not to unbind existing unload events
// More info:
//  - http://isaacschlueter.com/2006/10/msie-memory-leaks/
if ( window.attachEvent && !window.addEventListener ) {
	window.attachEvent("onunload", function() {
		for ( var id in jQuery.cache ) {
			if ( jQuery.cache[ id ].handle ) {
				// Try/Catch is to handle iframes being unloaded, see #4280
				try {
					jQuery.event.remove( jQuery.cache[ id ].handle.elem );
				} catch(e) {}
			}
		}
	});
}
/*!
 * Sizzle CSS Selector Engine - v1.0
 *  Copyright 2009, The Dojo Foundation
 *  More information: http://sizzlejs.com/
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
(function(){

var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g,
	done = 0,
	toString = Object.prototype.toString,
	hasDuplicate = false,
	baseHasDuplicate = true;

// Here we check if the JavaScript engine is using some sort of
// optimization where it does not always call our comparision
// function. If that is the case, discard the hasDuplicate value.
//   Thus far that includes Google Chrome.
[0, 0].sort(function(){
	baseHasDuplicate = false;
	return 0;
});

var Sizzle = function(selector, context, results, seed) {
	results = results || [];
	var origContext = context = context || document;

	if ( context.nodeType !== 1 && context.nodeType !== 9 ) {
		return [];
	}
	
	if ( !selector || typeof selector !== "string" ) {
		return results;
	}

	var parts = [], m, set, checkSet, extra, prune = true, contextXML = isXML(context),
		soFar = selector;
	
	// Reset the position of the chunker regexp (start from head)
	while ( (chunker.exec(""), m = chunker.exec(soFar)) !== null ) {
		soFar = m[3];
		
		parts.push( m[1] );
		
		if ( m[2] ) {
			extra = m[3];
			break;
		}
	}

	if ( parts.length > 1 && origPOS.exec( selector ) ) {
		if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
			set = posProcess( parts[0] + parts[1], context );
		} else {
			set = Expr.relative[ parts[0] ] ?
				[ context ] :
				Sizzle( parts.shift(), context );

			while ( parts.length ) {
				selector = parts.shift();

				if ( Expr.relative[ selector ] ) {
					selector += parts.shift();
				}
				
				set = posProcess( selector, set );
			}
		}
	} else {
		// Take a shortcut and set the context if the root selector is an ID
		// (but not if it'll be faster if the inner selector is an ID)
		if ( !seed && parts.length > 1 && context.nodeType === 9 && !contextXML &&
				Expr.match.ID.test(parts[0]) && !Expr.match.ID.test(parts[parts.length - 1]) ) {
			var ret = Sizzle.find( parts.shift(), context, contextXML );
			context = ret.expr ? Sizzle.filter( ret.expr, ret.set )[0] : ret.set[0];
		}

		if ( context ) {
			var ret = seed ?
				{ expr: parts.pop(), set: makeArray(seed) } :
				Sizzle.find( parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML );
			set = ret.expr ? Sizzle.filter( ret.expr, ret.set ) : ret.set;

			if ( parts.length > 0 ) {
				checkSet = makeArray(set);
			} else {
				prune = false;
			}

			while ( parts.length ) {
				var cur = parts.pop(), pop = cur;

				if ( !Expr.relative[ cur ] ) {
					cur = "";
				} else {
					pop = parts.pop();
				}

				if ( pop == null ) {
					pop = context;
				}

				Expr.relative[ cur ]( checkSet, pop, contextXML );
			}
		} else {
			checkSet = parts = [];
		}
	}

	if ( !checkSet ) {
		checkSet = set;
	}

	if ( !checkSet ) {
		Sizzle.error( cur || selector );
	}

	if ( toString.call(checkSet) === "[object Array]" ) {
		if ( !prune ) {
			results.push.apply( results, checkSet );
		} else if ( context && context.nodeType === 1 ) {
			for ( var i = 0; checkSet[i] != null; i++ ) {
				if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
					results.push( set[i] );
				}
			}
		} else {
			for ( var i = 0; checkSet[i] != null; i++ ) {
				if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
					results.push( set[i] );
				}
			}
		}
	} else {
		makeArray( checkSet, results );
	}

	if ( extra ) {
		Sizzle( extra, origContext, results, seed );
		Sizzle.uniqueSort( results );
	}

	return results;
};

Sizzle.uniqueSort = function(results){
	if ( sortOrder ) {
		hasDuplicate = baseHasDuplicate;
		results.sort(sortOrder);

		if ( hasDuplicate ) {
			for ( var i = 1; i < results.length; i++ ) {
				if ( results[i] === results[i-1] ) {
					results.splice(i--, 1);
				}
			}
		}
	}

	return results;
};

Sizzle.matches = function(expr, set){
	return Sizzle(expr, null, null, set);
};

Sizzle.find = function(expr, context, isXML){
	var set, match;

	if ( !expr ) {
		return [];
	}

	for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
		var type = Expr.order[i], match;
		
		if ( (match = Expr.leftMatch[ type ].exec( expr )) ) {
			var left = match[1];
			match.splice(1,1);

			if ( left.substr( left.length - 1 ) !== "\\" ) {
				match[1] = (match[1] || "").replace(/\\/g, "");
				set = Expr.find[ type ]( match, context, isXML );
				if ( set != null ) {
					expr = expr.replace( Expr.match[ type ], "" );
					break;
				}
			}
		}
	}

	if ( !set ) {
		set = context.getElementsByTagName("*");
	}

	return {set: set, expr: expr};
};

Sizzle.filter = function(expr, set, inplace, not){
	var old = expr, result = [], curLoop = set, match, anyFound,
		isXMLFilter = set && set[0] && isXML(set[0]);

	while ( expr && set.length ) {
		for ( var type in Expr.filter ) {
			if ( (match = Expr.leftMatch[ type ].exec( expr )) != null && match[2] ) {
				var filter = Expr.filter[ type ], found, item, left = match[1];
				anyFound = false;

				match.splice(1,1);

				if ( left.substr( left.length - 1 ) === "\\" ) {
					continue;
				}

				if ( curLoop === result ) {
					result = [];
				}

				if ( Expr.preFilter[ type ] ) {
					match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not, isXMLFilter );

					if ( !match ) {
						anyFound = found = true;
					} else if ( match === true ) {
						continue;
					}
				}

				if ( match ) {
					for ( var i = 0; (item = curLoop[i]) != null; i++ ) {
						if ( item ) {
							found = filter( item, match, i, curLoop );
							var pass = not ^ !!found;

							if ( inplace && found != null ) {
								if ( pass ) {
									anyFound = true;
								} else {
									curLoop[i] = false;
								}
							} else if ( pass ) {
								result.push( item );
								anyFound = true;
							}
						}
					}
				}

				if ( found !== undefined ) {
					if ( !inplace ) {
						curLoop = result;
					}

					expr = expr.replace( Expr.match[ type ], "" );

					if ( !anyFound ) {
						return [];
					}

					break;
				}
			}
		}

		// Improper expression
		if ( expr === old ) {
			if ( anyFound == null ) {
				Sizzle.error( expr );
			} else {
				break;
			}
		}

		old = expr;
	}

	return curLoop;
};

Sizzle.error = function( msg ) {
	throw "Syntax error, unrecognized expression: " + msg;
};

var Expr = Sizzle.selectors = {
	order: [ "ID", "NAME", "TAG" ],
	match: {
		ID: /#((?:[\w\u00c0-\uFFFF-]|\\.)+)/,
		CLASS: /\.((?:[\w\u00c0-\uFFFF-]|\\.)+)/,
		NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF-]|\\.)+)['"]*\]/,
		ATTR: /\[\s*((?:[\w\u00c0-\uFFFF-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
		TAG: /^((?:[\w\u00c0-\uFFFF\*-]|\\.)+)/,
		CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
		POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
		PSEUDO: /:((?:[\w\u00c0-\uFFFF-]|\\.)+)(?:\((['"]?)((?:\([^\)]+\)|[^\(\)]*)+)\2\))?/
	},
	leftMatch: {},
	attrMap: {
		"class": "className",
		"for": "htmlFor"
	},
	attrHandle: {
		href: function(elem){
			return elem.getAttribute("href");
		}
	},
	relative: {
		"+": function(checkSet, part){
			var isPartStr = typeof part === "string",
				isTag = isPartStr && !/\W/.test(part),
				isPartStrNotTag = isPartStr && !isTag;

			if ( isTag ) {
				part = part.toLowerCase();
			}

			for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
				if ( (elem = checkSet[i]) ) {
					while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {}

					checkSet[i] = isPartStrNotTag || elem && elem.nodeName.toLowerCase() === part ?
						elem || false :
						elem === part;
				}
			}

			if ( isPartStrNotTag ) {
				Sizzle.filter( part, checkSet, true );
			}
		},
		">": function(checkSet, part){
			var isPartStr = typeof part === "string";

			if ( isPartStr && !/\W/.test(part) ) {
				part = part.toLowerCase();

				for ( var i = 0, l = checkSet.length; i < l; i++ ) {
					var elem = checkSet[i];
					if ( elem ) {
						var parent = elem.parentNode;
						checkSet[i] = parent.nodeName.toLowerCase() === part ? parent : false;
					}
				}
			} else {
				for ( var i = 0, l = checkSet.length; i < l; i++ ) {
					var elem = checkSet[i];
					if ( elem ) {
						checkSet[i] = isPartStr ?
							elem.parentNode :
							elem.parentNode === part;
					}
				}

				if ( isPartStr ) {
					Sizzle.filter( part, checkSet, true );
				}
			}
		},
		"": function(checkSet, part, isXML){
			var doneName = done++, checkFn = dirCheck;

			if ( typeof part === "string" && !/\W/.test(part) ) {
				var nodeCheck = part = part.toLowerCase();
				checkFn = dirNodeCheck;
			}

			checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML);
		},
		"~": function(checkSet, part, isXML){
			var doneName = done++, checkFn = dirCheck;

			if ( typeof part === "string" && !/\W/.test(part) ) {
				var nodeCheck = part = part.toLowerCase();
				checkFn = dirNodeCheck;
			}

			checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML);
		}
	},
	find: {
		ID: function(match, context, isXML){
			if ( typeof context.getElementById !== "undefined" && !isXML ) {
				var m = context.getElementById(match[1]);
				return m ? [m] : [];
			}
		},
		NAME: function(match, context){
			if ( typeof context.getElementsByName !== "undefined" ) {
				var ret = [], results = context.getElementsByName(match[1]);

				for ( var i = 0, l = results.length; i < l; i++ ) {
					if ( results[i].getAttribute("name") === match[1] ) {
						ret.push( results[i] );
					}
				}

				return ret.length === 0 ? null : ret;
			}
		},
		TAG: function(match, context){
			return context.getElementsByTagName(match[1]);
		}
	},
	preFilter: {
		CLASS: function(match, curLoop, inplace, result, not, isXML){
			match = " " + match[1].replace(/\\/g, "") + " ";

			if ( isXML ) {
				return match;
			}

			for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) {
				if ( elem ) {
					if ( not ^ (elem.className && (" " + elem.className + " ").replace(/[\t\n]/g, " ").indexOf(match) >= 0) ) {
						if ( !inplace ) {
							result.push( elem );
						}
					} else if ( inplace ) {
						curLoop[i] = false;
					}
				}
			}

			return false;
		},
		ID: function(match){
			return match[1].replace(/\\/g, "");
		},
		TAG: function(match, curLoop){
			return match[1].toLowerCase();
		},
		CHILD: function(match){
			if ( match[1] === "nth" ) {
				// parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
				var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
					match[2] === "even" && "2n" || match[2] === "odd" && "2n+1" ||
					!/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);

				// calculate the numbers (first)n+(last) including if they are negative
				match[2] = (test[1] + (test[2] || 1)) - 0;
				match[3] = test[3] - 0;
			}

			// TODO: Move to normal caching system
			match[0] = done++;

			return match;
		},
		ATTR: function(match, curLoop, inplace, result, not, isXML){
			var name = match[1].replace(/\\/g, "");
			
			if ( !isXML && Expr.attrMap[name] ) {
				match[1] = Expr.attrMap[name];
			}

			if ( match[2] === "~=" ) {
				match[4] = " " + match[4] + " ";
			}

			return match;
		},
		PSEUDO: function(match, curLoop, inplace, result, not){
			if ( match[1] === "not" ) {
				// If we're dealing with a complex expression, or a simple one
				if ( ( chunker.exec(match[3]) || "" ).length > 1 || /^\w/.test(match[3]) ) {
					match[3] = Sizzle(match[3], null, null, curLoop);
				} else {
					var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
					if ( !inplace ) {
						result.push.apply( result, ret );
					}
					return false;
				}
			} else if ( Expr.match.POS.test( match[0] ) || Expr.match.CHILD.test( match[0] ) ) {
				return true;
			}
			
			return match;
		},
		POS: function(match){
			match.unshift( true );
			return match;
		}
	},
	filters: {
		enabled: function(elem){
			return elem.disabled === false && elem.type !== "hidden";
		},
		disabled: function(elem){
			return elem.disabled === true;
		},
		checked: function(elem){
			return elem.checked === true;
		},
		selected: function(elem){
			// Accessing this property makes selected-by-default
			// options in Safari work properly
			elem.parentNode.selectedIndex;
			return elem.selected === true;
		},
		parent: function(elem){
			return !!elem.firstChild;
		},
		empty: function(elem){
			return !elem.firstChild;
		},
		has: function(elem, i, match){
			return !!Sizzle( match[3], elem ).length;
		},
		header: function(elem){
			return /h\d/i.test( elem.nodeName );
		},
		text: function(elem){
			return "text" === elem.type;
		},
		radio: function(elem){
			return "radio" === elem.type;
		},
		checkbox: function(elem){
			return "checkbox" === elem.type;
		},
		file: function(elem){
			return "file" === elem.type;
		},
		password: function(elem){
			return "password" === elem.type;
		},
		submit: function(elem){
			return "submit" === elem.type;
		},
		image: function(elem){
			return "image" === elem.type;
		},
		reset: function(elem){
			return "reset" === elem.type;
		},
		button: function(elem){
			return "button" === elem.type || elem.nodeName.toLowerCase() === "button";
		},
		input: function(elem){
			return /input|select|textarea|button/i.test(elem.nodeName);
		}
	},
	setFilters: {
		first: function(elem, i){
			return i === 0;
		},
		last: function(elem, i, match, array){
			return i === array.length - 1;
		},
		even: function(elem, i){
			return i % 2 === 0;
		},
		odd: function(elem, i){
			return i % 2 === 1;
		},
		lt: function(elem, i, match){
			return i < match[3] - 0;
		},
		gt: function(elem, i, match){
			return i > match[3] - 0;
		},
		nth: function(elem, i, match){
			return match[3] - 0 === i;
		},
		eq: function(elem, i, match){
			return match[3] - 0 === i;
		}
	},
	filter: {
		PSEUDO: function(elem, match, i, array){
			var name = match[1], filter = Expr.filters[ name ];

			if ( filter ) {
				return filter( elem, i, match, array );
			} else if ( name === "contains" ) {
				return (elem.textContent || elem.innerText || getText([ elem ]) || "").indexOf(match[3]) >= 0;
			} else if ( name === "not" ) {
				var not = match[3];

				for ( var i = 0, l = not.length; i < l; i++ ) {
					if ( not[i] === elem ) {
						return false;
					}
				}

				return true;
			} else {
				Sizzle.error( "Syntax error, unrecognized expression: " + name );
			}
		},
		CHILD: function(elem, match){
			var type = match[1], 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;
				case 'last':
					while ( (node = node.nextSibling) )	 {
						if ( node.nodeType === 1 ) { 
							return false; 
						}
					}
					return true;
				case 'nth':
					var first = match[2], last = match[3];

					if ( first === 1 && last === 0 ) {
						return true;
					}
					
					var doneName = match[0],
						parent = elem.parentNode;
	
					if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
						var count = 0;
						for ( node = parent.firstChild; node; node = node.nextSibling ) {
							if ( node.nodeType === 1 ) {
								node.nodeIndex = ++count;
							}
						} 
						parent.sizcache = doneName;
					}
					
					var diff = elem.nodeIndex - last;
					if ( first === 0 ) {
						return diff === 0;
					} else {
						return ( diff % first === 0 && diff / first >= 0 );
					}
			}
		},
		ID: function(elem, match){
			return elem.nodeType === 1 && elem.getAttribute("id") === match;
		},
		TAG: function(elem, match){
			return (match === "*" && elem.nodeType === 1) || elem.nodeName.toLowerCase() === match;
		},
		CLASS: function(elem, match){
			return (" " + (elem.className || elem.getAttribute("class")) + " ")
				.indexOf( match ) > -1;
		},
		ATTR: function(elem, match){
			var name = match[1],
				result = Expr.attrHandle[ name ] ?
					Expr.attrHandle[ name ]( elem ) :
					elem[ name ] != null ?
						elem[ name ] :
						elem.getAttribute( name ),
				value = result + "",
				type = match[2],
				check = match[4];

			return result == null ?
				type === "!=" :
				type === "=" ?
				value === check :
				type === "*=" ?
				value.indexOf(check) >= 0 :
				type === "~=" ?
				(" " + value + " ").indexOf(check) >= 0 :
				!check ?
				value && result !== false :
				type === "!=" ?
				value !== check :
				type === "^=" ?
				value.indexOf(check) === 0 :
				type === "$=" ?
				value.substr(value.length - check.length) === check :
				type === "|=" ?
				value === check || value.substr(0, check.length + 1) === check + "-" :
				false;
		},
		POS: function(elem, match, i, array){
			var name = match[2], filter = Expr.setFilters[ name ];

			if ( filter ) {
				return filter( elem, i, match, array );
			}
		}
	}
};

var origPOS = Expr.match.POS;

for ( var type in Expr.match ) {
	Expr.match[ type ] = new RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
	Expr.leftMatch[ type ] = new RegExp( /(^(?:.|\r|\n)*?)/.source + Expr.match[ type ].source.replace(/\\(\d+)/g, function(all, num){
		return "\\" + (num - 0 + 1);
	}));
}

var makeArray = function(array, results) {
	array = Array.prototype.slice.call( array, 0 );

	if ( results ) {
		results.push.apply( results, array );
		return results;
	}
	
	return array;
};

// Perform a simple check to determine if the browser is capable of
// converting a NodeList to an array using builtin methods.
try {
	Array.prototype.slice.call( document.documentElement.childNodes, 0 );

// Provide a fallback method if it does not work
} catch(e){
	makeArray = function(array, results) {
		var ret = results || [];

		if ( toString.call(array) === "[object Array]" ) {
			Array.prototype.push.apply( ret, array );
		} else {
			if ( typeof array.length === "number" ) {
				for ( var i = 0, l = array.length; i < l; i++ ) {
					ret.push( array[i] );
				}
			} else {
				for ( var i = 0; array[i]; i++ ) {
					ret.push( array[i] );
				}
			}
		}

		return ret;
	};
}

var sortOrder;

if ( document.documentElement.compareDocumentPosition ) {
	sortOrder = function( a, b ) {
		if ( !a.compareDocumentPosition || !b.compareDocumentPosition ) {
			if ( a == b ) {
				hasDuplicate = true;
			}
			return a.compareDocumentPosition ? -1 : 1;
		}

		var ret = a.compareDocumentPosition(b) & 4 ? -1 : a === b ? 0 : 1;
		if ( ret === 0 ) {
			hasDuplicate = true;
		}
		return ret;
	};
} else if ( "sourceIndex" in document.documentElement ) {
	sortOrder = function( a, b ) {
		if ( !a.sourceIndex || !b.sourceIndex ) {
			if ( a == b ) {
				hasDuplicate = true;
			}
			return a.sourceIndex ? -1 : 1;
		}

		var ret = a.sourceIndex - b.sourceIndex;
		if ( ret === 0 ) {
			hasDuplicate = true;
		}
		return ret;
	};
} else if ( document.createRange ) {
	sortOrder = function( a, b ) {
		if ( !a.ownerDocument || !b.ownerDocument ) {
			if ( a == b ) {
				hasDuplicate = true;
			}
			return a.ownerDocument ? -1 : 1;
		}

		var aRange = a.ownerDocument.createRange(), bRange = b.ownerDocument.createRange();
		aRange.setStart(a, 0);
		aRange.setEnd(a, 0);
		bRange.setStart(b, 0);
		bRange.setEnd(b, 0);
		var ret = aRange.compareBoundaryPoints(Range.START_TO_END, bRange);
		if ( ret === 0 ) {
			hasDuplicate = true;
		}
		return ret;
	};
}

// Utility function for retreiving the text value of an array of DOM nodes
function getText( elems ) {
	var ret = "", elem;

	for ( var 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;
}

// Check to see if the browser returns elements by name when
// querying by getElementById (and provide a workaround)
(function(){
	// We're going to inject a fake input element with a specified name
	var form = document.createElement("div"),
		id = "script" + (new Date).getTime();
	form.innerHTML = "<a name='" + id + "'/>";

	// Inject it into the root element, check its status, and remove it quickly
	var root = document.documentElement;
	root.insertBefore( form, root.firstChild );

	// The workaround has to do additional checks after a getElementById
	// Which slows things down for other browsers (hence the branching)
	if ( document.getElementById( id ) ) {
		Expr.find.ID = function(match, context, isXML){
			if ( typeof context.getElementById !== "undefined" && !isXML ) {
				var m = context.getElementById(match[1]);
				return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
			}
		};

		Expr.filter.ID = function(elem, match){
			var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
			return elem.nodeType === 1 && node && node.nodeValue === match;
		};
	}

	root.removeChild( form );
	root = form = null; // release memory in IE
})();

(function(){
	// Check to see if the browser returns only elements
	// when doing getElementsByTagName("*")

	// Create a fake element
	var div = document.createElement("div");
	div.appendChild( document.createComment("") );

	// Make sure no comments are found
	if ( div.getElementsByTagName("*").length > 0 ) {
		Expr.find.TAG = function(match, context){
			var results = context.getElementsByTagName(match[1]);

			// Filter out possible comments
			if ( match[1] === "*" ) {
				var tmp = [];

				for ( var i = 0; results[i]; i++ ) {
					if ( results[i].nodeType === 1 ) {
						tmp.push( results[i] );
					}
				}

				results = tmp;
			}

			return results;
		};
	}

	// Check to see if an attribute returns normalized href attributes
	div.innerHTML = "<a href='#'></a>";
	if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
			div.firstChild.getAttribute("href") !== "#" ) {
		Expr.attrHandle.href = function(elem){
			return elem.getAttribute("href", 2);
		};
	}

	div = null; // release memory in IE
})();

if ( document.querySelectorAll ) {
	(function(){
		var oldSizzle = Sizzle, div = document.createElement("div");
		div.innerHTML = "<p class='TEST'></p>";

		// Safari can't handle uppercase or unicode characters when
		// in quirks mode.
		if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
			return;
		}
	
		Sizzle = function(query, context, extra, seed){
			context = context || document;

			// Only use querySelectorAll on non-XML documents
			// (ID selectors don't work in non-HTML documents)
			if ( !seed && context.nodeType === 9 && !isXML(context) ) {
				try {
					return makeArray( context.querySelectorAll(query), extra );
				} catch(e){}
			}
		
			return oldSizzle(query, context, extra, seed);
		};

		for ( var prop in oldSizzle ) {
			Sizzle[ prop ] = oldSizzle[ prop ];
		}

		div = null; // release memory in IE
	})();
}

(function(){
	var div = document.createElement("div");

	div.innerHTML = "<div class='test e'></div><div class='test'></div>";

	// Opera can't find a second classname (in 9.6)
	// Also, make sure that getElementsByClassName actually exists
	if ( !div.getElementsByClassName || div.getElementsByClassName("e").length === 0 ) {
		return;
	}

	// Safari caches class attributes, doesn't catch changes (in 3.2)
	div.lastChild.className = "e";

	if ( div.getElementsByClassName("e").length === 1 ) {
		return;
	}
	
	Expr.order.splice(1, 0, "CLASS");
	Expr.find.CLASS = function(match, context, isXML) {
		if ( typeof context.getElementsByClassName !== "undefined" && !isXML ) {
			return context.getElementsByClassName(match[1]);
		}
	};

	div = null; // release memory in IE
})();

function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
	for ( var i = 0, l = checkSet.length; i < l; i++ ) {
		var elem = checkSet[i];
		if ( elem ) {
			elem = elem[dir];
			var match = false;

			while ( elem ) {
				if ( elem.sizcache === doneName ) {
					match = checkSet[elem.sizset];
					break;
				}

				if ( elem.nodeType === 1 && !isXML ){
					elem.sizcache = doneName;
					elem.sizset = i;
				}

				if ( elem.nodeName.toLowerCase() === cur ) {
					match = elem;
					break;
				}

				elem = elem[dir];
			}

			checkSet[i] = match;
		}
	}
}

function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
	for ( var i = 0, l = checkSet.length; i < l; i++ ) {
		var elem = checkSet[i];
		if ( elem ) {
			elem = elem[dir];
			var match = false;

			while ( elem ) {
				if ( elem.sizcache === doneName ) {
					match = checkSet[elem.sizset];
					break;
				}

				if ( elem.nodeType === 1 ) {
					if ( !isXML ) {
						elem.sizcache = doneName;
						elem.sizset = i;
					}
					if ( typeof cur !== "string" ) {
						if ( elem === cur ) {
							match = true;
							break;
						}

					} else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
						match = elem;
						break;
					}
				}

				elem = elem[dir];
			}

			checkSet[i] = match;
		}
	}
}

var contains = document.compareDocumentPosition ? function(a, b){
	return a.compareDocumentPosition(b) & 16;
} : function(a, b){
	return a !== b && (a.contains ? a.contains(b) : true);
};

var 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 : 0).documentElement;
	return documentElement ? documentElement.nodeName !== "HTML" : false;
};

var posProcess = function(selector, context){
	var tmpSet = [], later = "", match,
		root = context.nodeType ? [context] : context;

	// Position selectors must be done after the filter
	// And so must :not(positional) so we move all PSEUDOs to the end
	while ( (match = Expr.match.PSEUDO.exec( selector )) ) {
		later += match[0];
		selector = selector.replace( Expr.match.PSEUDO, "" );
	}

	selector = Expr.relative[selector] ? selector + "*" : selector;

	for ( var i = 0, l = root.length; i < l; i++ ) {
		Sizzle( selector, root[i], tmpSet );
	}

	return Sizzle.filter( later, tmpSet );
};

// EXPOSE
jQuery.find = Sizzle;
jQuery.expr = Sizzle.selectors;
jQuery.expr[":"] = jQuery.expr.filters;
jQuery.unique = Sizzle.uniqueSort;
jQuery.getText = getText;
jQuery.isXMLDoc = isXML;
jQuery.contains = contains;

return;

window.Sizzle = Sizzle;

})();
var runtil = /Until$/,
	rparentsprev = /^(?:parents|prevUntil|prevAll)/,
	// Note: This RegExp should be improved, or likely pulled from Sizzle
	rmultiselector = /,/,
	slice = Array.prototype.slice;

// Implement the identical functionality for filter and not
var winnow = function( elements, qualifier, keep ) {
	if ( jQuery.isFunction( qualifier ) ) {
		return jQuery.grep(elements, function( elem, i ) {
			return !!qualifier.call( elem, i, elem ) === 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;
	});
};

jQuery.fn.extend({
	find: function( selector ) {
		var ret = this.pushStack( "", "find", selector ), length = 0;

		for ( var 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 ( var n = length; n < ret.length; n++ ) {
					for ( var r = 0; r < length; r++ ) {
						if ( ret[r] === ret[n] ) {
							ret.splice(n--, 1);
							break;
						}
					}
				}
			}
		}

		return ret;
	},

	has: function( target ) {
		var targets = jQuery( target );
		return this.filter(function() {
			for ( var i = 0, l = targets.length; i < l; 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 && jQuery.filter( selector, this ).length > 0;
	},

	closest: function( selectors, context ) {
		if ( jQuery.isArray( selectors ) ) {
			var ret = [], cur = this[0], match, matches = {}, selector;

			if ( cur && selectors.length ) {
				for ( var i = 0, l = selectors.length; i < l; i++ ) {
					selector = selectors[i];

					if ( !matches[selector] ) {
						matches[selector] = jQuery.expr.match.POS.test( selector ) ? 
							jQuery( selector, context || this.context ) :
							selector;
					}
				}

				while ( cur && cur.ownerDocument && cur !== context ) {
					for ( selector in matches ) {
						match = matches[selector];

						if ( match.jquery ? match.index(cur) > -1 : jQuery(cur).is(match) ) {
							ret.push({ selector: selector, elem: cur });
							delete matches[selector];
						}
					}
					cur = cur.parentNode;
				}
			}

			return ret;
		}

		var pos = jQuery.expr.match.POS.test( selectors ) ? 
			jQuery( selectors, context || this.context ) : null;

		return this.map(function( i, cur ) {
			while ( cur && cur.ownerDocument && cur !== context ) {
				if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selectors) ) {
					return cur;
				}
				cur = cur.parentNode;
			}
			return null;
		});
	},
	
	// Determine the position of an element within
	// the matched set of elements
	index: function( elem ) {
		if ( !elem || typeof elem === "string" ) {
			return jQuery.inArray( this[0],
				// If it receives a string, the selector is used
				// If it receives nothing, the siblings are used
				elem ? jQuery( elem ) : this.parent().children() );
		}
		// 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 || this.context ) :
				jQuery.makeArray( selector ),
			all = jQuery.merge( this.get(), set );

		return this.pushStack( isDisconnected( set[0] ) || isDisconnected( all[0] ) ?
			all :
			jQuery.unique( all ) );
	},

	andSelf: function() {
		return this.add( this.prevObject );
	}
});

// 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;
}

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 jQuery.nth( elem, 2, "nextSibling" );
	},
	prev: function( elem ) {
		return jQuery.nth( elem, 2, "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.makeArray( 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 ? jQuery.unique( ret ) : ret;

		if ( (this.length > 1 || rmultiselector.test( selector )) && rparentsprev.test( name ) ) {
			ret = ret.reverse();
		}

		return this.pushStack( ret, name, slice.call(arguments).join(",") );
	};
});

jQuery.extend({
	filter: function( expr, elems, not ) {
		if ( not ) {
			expr = ":not(" + expr + ")";
		}

		return 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;
	},

	nth: function( cur, result, dir, elem ) {
		result = result || 1;
		var num = 0;

		for ( ; cur; cur = cur[dir] ) {
			if ( cur.nodeType === 1 && ++num === result ) {
				break;
			}
		}

		return cur;
	},

	sibling: function( n, elem ) {
		var r = [];

		for ( ; n; n = n.nextSibling ) {
			if ( n.nodeType === 1 && n !== elem ) {
				r.push( n );
			}
		}

		return r;
	}
});
var rinlinejQuery = / jQuery\d+="(?:\d+|null)"/g,
	rleadingWhitespace = /^\s+/,
	rxhtmlTag = /(<([\w:]+)[^>]*?)\/>/g,
	rselfClosing = /^(?:area|br|col|embed|hr|img|input|link|meta|param)$/i,
	rtagName = /<([\w:]+)/,
	rtbody = /<tbody/i,
	rhtml = /<|&\w+;/,
	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,  // checked="checked" or checked (html5)
	fcloseTag = function( all, front, tag ) {
		return rselfClosing.test( tag ) ?
			all :
			front + "></" + tag + ">";
	},
	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, "", "" ]
	};

wrapMap.optgroup = wrapMap.option;
wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
wrapMap.th = wrapMap.td;

// IE can't serialize <link> and <script> tags normally
if ( !jQuery.support.htmlSerialize ) {
	wrapMap._default = [ 1, "div<div>", "</div>" ];
}

jQuery.fn.extend({
	text: function( text ) {
		if ( jQuery.isFunction(text) ) {
			return this.each(function(i) {
				var self = jQuery(this);
				self.text( text.call(this, i, self.text()) );
			});
		}

		if ( typeof text !== "object" && text !== undefined ) {
			return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
		}

		return jQuery.getText( this );
	},

	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 ) {
		return this.each(function() {
			jQuery( this ).wrapAll( 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.appendChild( elem );
			}
		});
	},

	prepend: function() {
		return this.domManip(arguments, true, function( elem ) {
			if ( this.nodeType === 1 ) {
				this.insertBefore( elem, this.firstChild );
			}
		});
	},

	before: function() {
		if ( this[0] && this[0].parentNode ) {
			return this.domManip(arguments, false, function( elem ) {
				this.parentNode.insertBefore( elem, this );
			});
		} else if ( arguments.length ) {
			var set = jQuery(arguments[0]);
			set.push.apply( set, this.toArray() );
			return this.pushStack( set, "before", arguments );
		}
	},

	after: function() {
		if ( this[0] && this[0].parentNode ) {
			return this.domManip(arguments, false, function( elem ) {
				this.parentNode.insertBefore( elem, this.nextSibling );
			});
		} else if ( arguments.length ) {
			var set = this.pushStack( this, "after", arguments );
			set.push.apply( set, jQuery(arguments[0]).toArray() );
			return set;
		}
	},

	clone: function( events ) {
		// Do the clone
		var ret = this.map(function() {
			if ( !jQuery.support.noCloneEvent && !jQuery.isXMLDoc(this) ) {
				// IE copies events bound via attachEvent when
				// using cloneNode. Calling detachEvent on the
				// clone will also remove the events from the orignal
				// In order to get around this, we use innerHTML.
				// Unfortunately, this means some modifications to
				// attributes in IE that are actually only stored
				// as properties will not be copied (such as the
				// the name attribute on an input).
				var html = this.outerHTML, ownerDocument = this.ownerDocument;
				if ( !html ) {
					var div = ownerDocument.createElement("div");
					div.appendChild( this.cloneNode(true) );
					html = div.innerHTML;
				}

				return jQuery.clean([html.replace(rinlinejQuery, "")
					.replace(rleadingWhitespace, "")], ownerDocument)[0];
			} else {
				return this.cloneNode(true);
			}
		});

		// Copy the events from the original to the clone
		if ( events === true ) {
			cloneCopyEvent( this, ret );
			cloneCopyEvent( this.find("*"), ret.find("*") );
		}

		// Return the cloned set
		return ret;
	},

	html: function( value ) {
		if ( value === undefined ) {
			return this[0] && this[0].nodeType === 1 ?
				this[0].innerHTML.replace(rinlinejQuery, "") :
				null;

		// See if we can take a shortcut and just use innerHTML
		} else if ( typeof value === "string" && !/<script/i.test( value ) &&
			(jQuery.support.leadingWhitespace || !rleadingWhitespace.test( value )) &&
			!wrapMap[ (rtagName.exec( value ) || ["", ""])[1].toLowerCase() ] ) {

			value = value.replace(rxhtmlTag, fcloseTag);

			try {
				for ( var i = 0, l = this.length; i < l; i++ ) {
					// Remove element nodes and prevent memory leaks
					if ( this[i].nodeType === 1 ) {
						jQuery.cleanData( this[i].getElementsByTagName("*") );
						this[i].innerHTML = value;
					}
				}

			// If using innerHTML throws an exception, use the fallback method
			} catch(e) {
				this.empty().append( value );
			}

		} else if ( jQuery.isFunction( value ) ) {
			this.each(function(i){
				var self = jQuery(this), old = self.html();
				self.empty().append(function(){
					return value.call( this, i, old );
				});
			});

		} else {
			this.empty().append( value );
		}

		return this;
	},

	replaceWith: function( value ) {
		if ( this[0] && this[0].parentNode ) {
			// 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 ) ) {
				value = jQuery( value ).detach();

			} else {
				return this.each(function(i) {
					var self = jQuery(this), old = self.html();
					self.replaceWith( value.call( this, i, old ) );
				});
			}

			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 );
				}
			});
		} else {
			return this.pushStack( jQuery(jQuery.isFunction(value) ? value() : value), "replaceWith", value );
		}
	},

	detach: function( selector ) {
		return this.remove( selector, true );
	},

	domManip: function( args, table, callback ) {
		var results, first, value = args[0], scripts = [];

		// We can't cloneNode fragments that contain checked, in WebKit
		if ( !jQuery.support.checkClone && arguments.length === 3 && typeof value === "string" && rchecked.test( value ) ) {
			return this.each(function() {
				jQuery(this).domManip( args, table, callback, true );
			});
		}

		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] ) {
			// If we're in a fragment, just use that instead of building a new one
			if ( args[0] && args[0].parentNode && args[0].parentNode.nodeType === 11 ) {
				results = { fragment: args[0].parentNode };
			} else {
				results = buildFragment( args, this, scripts );
			}

			first = results.fragment.firstChild;

			if ( first ) {
				table = table && jQuery.nodeName( first, "tr" );

				for ( var i = 0, l = this.length; i < l; i++ ) {
					callback.call(
						table ?
							root(this[i], first) :
							this[i],
						results.cacheable || this.length > 1 || i > 0 ?
							results.fragment.cloneNode(true) :
							results.fragment
					);
				}
			}

			if ( scripts ) {
				jQuery.each( scripts, evalScript );
			}
		}

		return this;

		function root( elem, cur ) {
			return jQuery.nodeName(elem, "table") ?
				(elem.getElementsByTagName("tbody")[0] ||
				elem.appendChild(elem.ownerDocument.createElement("tbody"))) :
				elem;
		}
	}
});

function cloneCopyEvent(orig, ret) {
	var i = 0;

	ret.each(function() {
		if ( this.nodeName !== (orig[i] && orig[i].nodeName) ) {
			return;
		}

		var oldData = jQuery.data( orig[i++] ), curData = jQuery.data( this, oldData ), events = oldData && oldData.events;

		if ( events ) {
			delete curData.handle;
			curData.events = {};

			for ( var type in events ) {
				for ( var handler in events[ type ] ) {
					jQuery.event.add( this, type, events[ type ][ handler ], events[ type ][ handler ].data );
				}
			}
		}
	});
}

function buildFragment( args, nodes, scripts ) {
	var fragment, cacheable, cacheresults, doc;

	// webkit does not clone 'checked' attribute of radio inputs on cloneNode, so don't cache if string has a checked
	if ( args.length === 1 && typeof args[0] === "string" && args[0].length < 512 && args[0].indexOf("<option") < 0 && (jQuery.support.checkClone || !rchecked.test( args[0] )) ) {
		cacheable = true;
		cacheresults = jQuery.fragments[ args[0] ];
		if ( cacheresults ) {
			if ( cacheresults !== 1 ) {
				fragment = cacheresults;
			}
		}
	}

	if ( !fragment ) {
		doc = (nodes && nodes[0] ? nodes[0].ownerDocument || nodes[0] : document);
		fragment = doc.createDocumentFragment();
		jQuery.clean( args, doc, fragment, scripts );
	}

	if ( cacheable ) {
		jQuery.fragments[ args[0] ] = cacheresults ? fragment : 1;
	}

	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 ret = [], insert = jQuery( selector );

		for ( var i = 0, l = insert.length; i < l; i++ ) {
			var elems = (i > 0 ? this.clone(true) : this).get();
			jQuery.fn[ original ].apply( jQuery(insert[i]), elems );
			ret = ret.concat( elems );
		}
		return this.pushStack( ret, name, insert.selector );
	};
});

jQuery.each({
	// keepData is for internal use only--do not document
	remove: function( selector, keepData ) {
		if ( !selector || jQuery.filter( selector, [ this ] ).length ) {
			if ( !keepData && this.nodeType === 1 ) {
				jQuery.cleanData( this.getElementsByTagName("*") );
				jQuery.cleanData( [ this ] );
			}

			if ( this.parentNode ) {
				 this.parentNode.removeChild( this );
			}
		}
	},

	empty: function() {
		// Remove element nodes and prevent memory leaks
		if ( this.nodeType === 1 ) {
			jQuery.cleanData( this.getElementsByTagName("*") );
		}

		// Remove any remaining nodes
		while ( this.firstChild ) {
			this.removeChild( this.firstChild );
		}
	}
}, function( name, fn ) {
	jQuery.fn[ name ] = function() {
		return this.each( fn, arguments );
	};
});

jQuery.extend({
	clean: function( elems, context, fragment, scripts ) {
		context = context || document;

		// !context.createElement fails in IE with an error but returns typeof 'object'
		if ( typeof context.createElement === "undefined" ) {
			context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
		}

		var ret = [];

		jQuery.each(elems, function( i, elem ) {
			if ( typeof elem === "number" ) {
				elem += "";
			}

			if ( !elem ) {
				return;
			}

			// Convert html string into DOM nodes
			if ( typeof elem === "string" && !rhtml.test( elem ) ) {
				elem = context.createTextNode( elem );

			} else if ( typeof elem === "string" ) {
				// Fix "XHTML"-style tags in all browsers
				elem = elem.replace(rxhtmlTag, fcloseTag);

				// Trim whitespace, otherwise indexOf won't work as expected
				var tag = (rtagName.exec( elem ) || ["", ""])[1].toLowerCase(),
					wrap = wrapMap[ tag ] || wrapMap._default,
					depth = wrap[0],
					div = context.createElement("div");

				// Go to html and back, then peel off extra wrappers
				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>
					var 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 ( var 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 = jQuery.makeArray( div.childNodes );
			}

			if ( elem.nodeType ) {
				ret.push( elem );
			} else {
				ret = jQuery.merge( ret, elem );
			}

		});

		if ( fragment ) {
			for ( var i = 0; ret[i]; i++ ) {
				if ( scripts && jQuery.nodeName( ret[i], "script" ) && (!ret[i].type || ret[i].type.toLowerCase() === "text/javascript") ) {
					scripts.push( ret[i].parentNode ? ret[i].parentNode.removeChild( ret[i] ) : ret[i] );
				} else {
					if ( ret[i].nodeType === 1 ) {
						ret.splice.apply( ret, [i + 1, 0].concat(jQuery.makeArray(ret[i].getElementsByTagName("script"))) );
					}
					fragment.appendChild( ret[i] );
				}
			}
		}

		return ret;
	},
	
	cleanData: function( elems ) {
		for ( var i = 0, elem, id; (elem = elems[i]) != null; i++ ) {
			jQuery.event.remove( elem );
			jQuery.removeData( elem );
		}
	}
});
// exclude the following css properties to add px
var rexclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
	ralpha = /alpha\([^)]*\)/,
	ropacity = /opacity=([^)]*)/,
	rfloat = /float/i,
	rdashAlpha = /-([a-z])/ig,
	rupper = /([A-Z])/g,
	rnumpx = /^-?\d+(?:px)?$/i,
	rnum = /^-?\d/,

	cssShow = { position: "absolute", visibility: "hidden", display:"block" },
	cssWidth = [ "Left", "Right" ],
	cssHeight = [ "Top", "Bottom" ],

	// cache check for defaultView.getComputedStyle
	getComputedStyle = document.defaultView && document.defaultView.getComputedStyle,
	// normalize float css property
	styleFloat = jQuery.support.cssFloat ? "cssFloat" : "styleFloat",
	fcamelCase = function( all, letter ) {
		return letter.toUpperCase();
	};

jQuery.fn.css = function( name, value ) {
	return access( this, name, value, true, function( elem, name, value ) {
		if ( value === undefined ) {
			return jQuery.curCSS( elem, name );
		}
		
		if ( typeof value === "number" && !rexclude.test(name) ) {
			value += "px";
		}

		jQuery.style( elem, name, value );
	});
};

jQuery.extend({
	style: function( elem, name, value ) {
		// don't set styles on text and comment nodes
		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
			return undefined;
		}

		// ignore negative width and height values #1599
		if ( (name === "width" || name === "height") && parseFloat(value) < 0 ) {
			value = undefined;
		}

		var style = elem.style || elem, set = value !== undefined;

		// IE uses filters for opacity
		if ( !jQuery.support.opacity && name === "opacity" ) {
			if ( set ) {
				// IE has trouble with opacity if it does not have layout
				// Force it by setting the zoom level
				style.zoom = 1;

				// Set the alpha filter to set the opacity
				var opacity = parseInt( value, 10 ) + "" === "NaN" ? "" : "alpha(opacity=" + value * 100 + ")";
				var filter = style.filter || jQuery.curCSS( elem, "filter" ) || "";
				style.filter = ralpha.test(filter) ? filter.replace(ralpha, opacity) : opacity;
			}

			return style.filter && style.filter.indexOf("opacity=") >= 0 ?
				(parseFloat( ropacity.exec(style.filter)[1] ) / 100) + "":
				"";
		}

		// Make sure we're using the right name for getting the float value
		if ( rfloat.test( name ) ) {
			name = styleFloat;
		}

		name = name.replace(rdashAlpha, fcamelCase);

		if ( set ) {
			style[ name ] = value;
		}

		return style[ name ];
	},

	css: function( elem, name, force, extra ) {
		if ( name === "width" || name === "height" ) {
			var val, props = cssShow, which = name === "width" ? cssWidth : cssHeight;

			function getWH() {
				val = name === "width" ? elem.offsetWidth : elem.offsetHeight;

				if ( extra === "border" ) {
					return;
				}

				jQuery.each( which, function() {
					if ( !extra ) {
						val -= parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
					}

					if ( extra === "margin" ) {
						val += parseFloat(jQuery.curCSS( elem, "margin" + this, true)) || 0;
					} else {
						val -= parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
					}
				});
			}

			if ( elem.offsetWidth !== 0 ) {
				getWH();
			} else {
				jQuery.swap( elem, props, getWH );
			}

			return Math.max(0, Math.round(val));
		}

		return jQuery.curCSS( elem, name, force );
	},

	curCSS: function( elem, name, force ) {
		var ret, style = elem.style, filter;

		// IE uses filters for opacity
		if ( !jQuery.support.opacity && name === "opacity" && elem.currentStyle ) {
			ret = ropacity.test(elem.currentStyle.filter || "") ?
				(parseFloat(RegExp.$1) / 100) + "" :
				"";

			return ret === "" ?
				"1" :
				ret;
		}

		// Make sure we're using the right name for getting the float value
		if ( rfloat.test( name ) ) {
			name = styleFloat;
		}

		if ( !force && style && style[ name ] ) {
			ret = style[ name ];

		} else if ( getComputedStyle ) {

			// Only "float" is needed here
			if ( rfloat.test( name ) ) {
				name = "float";
			}

			name = name.replace( rupper, "-$1" ).toLowerCase();

			var defaultView = elem.ownerDocument.defaultView;

			if ( !defaultView ) {
				return null;
			}

			var computedStyle = defaultView.getComputedStyle( elem, null );

			if ( computedStyle ) {
				ret = computedStyle.getPropertyValue( name );
			}

			// We should always get a number back from opacity
			if ( name === "opacity" && ret === "" ) {
				ret = "1";
			}

		} else if ( elem.currentStyle ) {
			var camelCase = name.replace(rdashAlpha, fcamelCase);

			ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];

			// 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
			if ( !rnumpx.test( ret ) && rnum.test( ret ) ) {
				// Remember the original values
				var left = style.left, rsLeft = elem.runtimeStyle.left;

				// Put in the new values to get a computed value out
				elem.runtimeStyle.left = elem.currentStyle.left;
				style.left = camelCase === "fontSize" ? "1em" : (ret || 0);
				ret = style.pixelLeft + "px";

				// Revert the changed values
				style.left = left;
				elem.runtimeStyle.left = rsLeft;
			}
		}

		return ret;
	},

	// A method for quickly swapping in/out CSS properties to get correct calculations
	swap: function( elem, options, callback ) {
		var old = {};

		// Remember the old values, and insert the new ones
		for ( var name in options ) {
			old[ name ] = elem.style[ name ];
			elem.style[ name ] = options[ name ];
		}

		callback.call( elem );

		// Revert the old values
		for ( var name in options ) {
			elem.style[ name ] = old[ name ];
		}
	}
});

if ( jQuery.expr && jQuery.expr.filters ) {
	jQuery.expr.filters.hidden = function( elem ) {
		var width = elem.offsetWidth, height = elem.offsetHeight,
			skip = elem.nodeName.toLowerCase() === "tr";

		return width === 0 && height === 0 && !skip ?
			true :
			width > 0 && height > 0 && !skip ?
				false :
				jQuery.curCSS(elem, "display") === "none";
	};

	jQuery.expr.filters.visible = function( elem ) {
		return !jQuery.expr.filters.hidden( elem );
	};
}
var jsc = now(),
	rscript = /<script(.|\s)*?\/script>/gi,
	rselectTextarea = /select|textarea/i,
	rinput = /color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week/i,
	jsre = /=\?(&|$)/,
	rquery = /\?/,
	rts = /(\?|&)_=.*?(&|$)/,
	rurl = /^(\w+:)?\/\/([^\/?#]+)/,
	r20 = /%20/g;

jQuery.fn.extend({
	// Keep a copy of the old load
	_load: jQuery.fn.load,

	load: function( url, params, callback ) {
		if ( typeof url !== "string" ) {
			return this._load( url );

		// Don't do a request if no elements are being requested
		} else if ( !this.length ) {
			return this;
		}

		var off = url.indexOf(" ");
		if ( off >= 0 ) {
			var selector = url.slice(off, url.length);
			url = url.slice(0, off);
		}

		// Default to a GET request
		var type = "GET";

		// If the second parameter was provided
		if ( params ) {
			// If it's a function
			if ( jQuery.isFunction( params ) ) {
				// We assume that it's the callback
				callback = params;
				params = null;

			// Otherwise, build a param string
			} else if ( typeof params === "object" ) {
				params = jQuery.param( params, jQuery.ajaxSettings.traditional );
				type = "POST";
			}
		}

		var self = this;

		// Request the remote document
		jQuery.ajax({
			url: url,
			type: type,
			dataType: "html",
			data: params,
			complete: function( res, status ) {
				// If successful, inject the HTML into all the matched elements
				if ( status === "success" || status === "notmodified" ) {
					// 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(res.responseText.replace(rscript, ""))

							// Locate the specified elements
							.find(selector) :

						// If not, just inject the full result
						res.responseText );
				}

				if ( callback ) {
					self.each( callback, [res.responseText, status, res] );
				}
			}
		});

		return this;
	},

	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 };
					}) :
					{ name: elem.name, value: val };
		}).get();
	}
});

// 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.bind(o, f);
	};
});

jQuery.extend({

	get: function( url, data, callback, type ) {
		// shift arguments if data argument was omited
		if ( jQuery.isFunction( data ) ) {
			type = type || callback;
			callback = data;
			data = null;
		}

		return jQuery.ajax({
			type: "GET",
			url: url,
			data: data,
			success: callback,
			dataType: type
		});
	},

	getScript: function( url, callback ) {
		return jQuery.get(url, null, callback, "script");
	},

	getJSON: function( url, data, callback ) {
		return jQuery.get(url, data, callback, "json");
	},

	post: function( url, data, callback, type ) {
		// shift arguments if data argument was omited
		if ( jQuery.isFunction( data ) ) {
			type = type || callback;
			callback = data;
			data = {};
		}

		return jQuery.ajax({
			type: "POST",
			url: url,
			data: data,
			success: callback,
			dataType: type
		});
	},

	ajaxSetup: function( settings ) {
		jQuery.extend( jQuery.ajaxSettings, settings );
	},

	ajaxSettings: {
		url: location.href,
		global: true,
		type: "GET",
		contentType: "application/x-www-form-urlencoded",
		processData: true,
		async: true,
		/*
		timeout: 0,
		data: null,
		username: null,
		password: null,
		traditional: false,
		*/
		// Create the request object; Microsoft failed to properly
		// implement the XMLHttpRequest in IE7 (can't request local files),
		// so we use the ActiveXObject when it is available
		// This function can be overriden by calling jQuery.ajaxSetup
		xhr: window.XMLHttpRequest && (window.location.protocol !== "file:" || !window.ActiveXObject) ?
			function() {
				return new window.XMLHttpRequest();
			} :
			function() {
				try {
					return new window.ActiveXObject("Microsoft.XMLHTTP");
				} catch(e) {}
			},
		accepts: {
			xml: "application/xml, text/xml",
			html: "text/html",
			script: "text/javascript, application/javascript",
			json: "application/json, text/javascript",
			text: "text/plain",
			_default: "*/*"
		}
	},

	// Last-Modified header cache for next request
	lastModified: {},
	etag: {},

	ajax: function( origSettings ) {
		var s = jQuery.extend(true, {}, jQuery.ajaxSettings, origSettings);
		
		var jsonp, status, data,
			callbackContext = origSettings && origSettings.context || s,
			type = s.type.toUpperCase();

		// convert data if not already a string
		if ( s.data && s.processData && typeof s.data !== "string" ) {
			s.data = jQuery.param( s.data, s.traditional );
		}

		// Handle JSONP Parameter Callbacks
		if ( s.dataType === "jsonp" ) {
			if ( type === "GET" ) {
				if ( !jsre.test( s.url ) ) {
					s.url += (rquery.test( s.url ) ? "&" : "?") + (s.jsonp || "callback") + "=?";
				}
			} else if ( !s.data || !jsre.test(s.data) ) {
				s.data = (s.data ? s.data + "&" : "") + (s.jsonp || "callback") + "=?";
			}
			s.dataType = "json";
		}

		// Build temporary JSONP function
		if ( s.dataType === "json" && (s.data && jsre.test(s.data) || jsre.test(s.url)) ) {
			jsonp = s.jsonpCallback || ("jsonp" + jsc++);

			// Replace the =? sequence both in the query string and the data
			if ( s.data ) {
				s.data = (s.data + "").replace(jsre, "=" + jsonp + "$1");
			}

			s.url = s.url.replace(jsre, "=" + jsonp + "$1");

			// We need to make sure
			// that a JSONP style response is executed properly
			s.dataType = "script";

			// Handle JSONP-style loading
			window[ jsonp ] = window[ jsonp ] || function( tmp ) {
				data = tmp;
				success();
				complete();
				// Garbage collect
				window[ jsonp ] = undefined;

				try {
					delete window[ jsonp ];
				} catch(e) {}

				if ( head ) {
					head.removeChild( script );
				}
			};
		}

		if ( s.dataType === "script" && s.cache === null ) {
			s.cache = false;
		}

		if ( s.cache === false && type === "GET" ) {
			var ts = now();

			// try replacing _= if it is there
			var ret = s.url.replace(rts, "$1_=" + ts + "$2");

			// if nothing was replaced, add timestamp to the end
			s.url = ret + ((ret === s.url) ? (rquery.test(s.url) ? "&" : "?") + "_=" + ts : "");
		}

		// If data is available, append data to url for get requests
		if ( s.data && type === "GET" ) {
			s.url += (rquery.test(s.url) ? "&" : "?") + s.data;
		}

		// Watch for a new set of requests
		if ( s.global && ! jQuery.active++ ) {
			jQuery.event.trigger( "ajaxStart" );
		}

		// Matches an absolute URL, and saves the domain
		var parts = rurl.exec( s.url ),
			remote = parts && (parts[1] && parts[1] !== location.protocol || parts[2] !== location.host);

		// If we're requesting a remote document
		// and trying to load JSON or Script with a GET
		if ( s.dataType === "script" && type === "GET" && remote ) {
			var head = document.getElementsByTagName("head")[0] || document.documentElement;
			var script = document.createElement("script");
			script.src = s.url;
			if ( s.scriptCharset ) {
				script.charset = s.scriptCharset;
			}

			// Handle Script loading
			if ( !jsonp ) {
				var done = false;

				// Attach handlers for all browsers
				script.onload = script.onreadystatechange = function() {
					if ( !done && (!this.readyState ||
							this.readyState === "loaded" || this.readyState === "complete") ) {
						done = true;
						success();
						complete();

						// Handle memory leak in IE
						script.onload = script.onreadystatechange = null;
						if ( head && script.parentNode ) {
							head.removeChild( script );
						}
					}
				};
			}

			// 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 );

			// We handle everything using the script element injection
			return undefined;
		}

		var requestDone = false;

		// Create the request object
		var xhr = s.xhr();

		if ( !xhr ) {
			return;
		}

		// Open the socket
		// Passing null username, generates a login popup on Opera (#2865)
		if ( s.username ) {
			xhr.open(type, s.url, s.async, s.username, s.password);
		} else {
			xhr.open(type, s.url, s.async);
		}

		// Need an extra try/catch for cross domain requests in Firefox 3
		try {
			// Set the correct header, if data is being sent
			if ( s.data || origSettings && origSettings.contentType ) {
				xhr.setRequestHeader("Content-Type", s.contentType);
			}

			// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
			if ( s.ifModified ) {
				if ( jQuery.lastModified[s.url] ) {
					xhr.setRequestHeader("If-Modified-Since", jQuery.lastModified[s.url]);
				}

				if ( jQuery.etag[s.url] ) {
					xhr.setRequestHeader("If-None-Match", jQuery.etag[s.url]);
				}
			}

			// Set header so the called script knows that it's an XMLHttpRequest
			// Only send the header if it's not a remote XHR
			if ( !remote ) {
				xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
			}

			// Set the Accepts header for the server, depending on the dataType
			xhr.setRequestHeader("Accept", s.dataType && s.accepts[ s.dataType ] ?
				s.accepts[ s.dataType ] + ", */*" :
				s.accepts._default );
		} catch(e) {}

		// Allow custom headers/mimetypes and early abort
		if ( s.beforeSend && s.beforeSend.call(callbackContext, xhr, s) === false ) {
			// Handle the global AJAX counter
			if ( s.global && ! --jQuery.active ) {
				jQuery.event.trigger( "ajaxStop" );
			}

			// close opended socket
			xhr.abort();
			return false;
		}

		if ( s.global ) {
			trigger("ajaxSend", [xhr, s]);
		}

		// Wait for a response to come back
		var onreadystatechange = xhr.onreadystatechange = function( isTimeout ) {
			// The request was aborted
			if ( !xhr || xhr.readyState === 0 || isTimeout === "abort" ) {
				// Opera doesn't call onreadystatechange before this point
				// so we simulate the call
				if ( !requestDone ) {
					complete();
				}

				requestDone = true;
				if ( xhr ) {
					xhr.onreadystatechange = jQuery.noop;
				}

			// The transfer is complete and the data is available, or the request timed out
			} else if ( !requestDone && xhr && (xhr.readyState === 4 || isTimeout === "timeout") ) {
				requestDone = true;
				xhr.onreadystatechange = jQuery.noop;

				status = isTimeout === "timeout" ?
					"timeout" :
					!jQuery.httpSuccess( xhr ) ?
						"error" :
						s.ifModified && jQuery.httpNotModified( xhr, s.url ) ?
							"notmodified" :
							"success";

				var errMsg;

				if ( status === "success" ) {
					// Watch for, and catch, XML document parse errors
					try {
						// process the data (runs the xml through httpData regardless of callback)
						data = jQuery.httpData( xhr, s.dataType, s );
					} catch(err) {
						status = "parsererror";
						errMsg = err;
					}
				}

				// Make sure that the request was successful or notmodified
				if ( status === "success" || status === "notmodified" ) {
					// JSONP handles its own success callback
					if ( !jsonp ) {
						success();
					}
				} else {
					jQuery.handleError(s, xhr, status, errMsg);
				}

				// Fire the complete handlers
				complete();

				if ( isTimeout === "timeout" ) {
					xhr.abort();
				}

				// Stop memory leaks
				if ( s.async ) {
					xhr = null;
				}
			}
		};

		// Override the abort handler, if we can (IE doesn't allow it, but that's OK)
		// Opera doesn't fire onreadystatechange at all on abort
		try {
			var oldAbort = xhr.abort;
			xhr.abort = function() {
				if ( xhr ) {
					oldAbort.call( xhr );
				}

				onreadystatechange( "abort" );
			};
		} catch(e) { }

		// Timeout checker
		if ( s.async && s.timeout > 0 ) {
			setTimeout(function() {
				// Check to see if the request is still happening
				if ( xhr && !requestDone ) {
					onreadystatechange( "timeout" );
				}
			}, s.timeout);
		}

		// Send the data
		try {
			xhr.send( type === "POST" || type === "PUT" || type === "DELETE" ? s.data : null );
		} catch(e) {
			jQuery.handleError(s, xhr, null, e);
			// Fire the complete handlers
			complete();
		}

		// firefox 1.5 doesn't fire statechange for sync requests
		if ( !s.async ) {
			onreadystatechange();
		}

		function success() {
			// If a local callback was specified, fire it and pass it the data
			if ( s.success ) {
				s.success.call( callbackContext, data, status, xhr );
			}

			// Fire the global callback
			if ( s.global ) {
				trigger( "ajaxSuccess", [xhr, s] );
			}
		}

		function complete() {
			// Process result
			if ( s.complete ) {
				s.complete.call( callbackContext, xhr, status);
			}

			// The request was completed
			if ( s.global ) {
				trigger( "ajaxComplete", [xhr, s] );
			}

			// Handle the global AJAX counter
			if ( s.global && ! --jQuery.active ) {
				jQuery.event.trigger( "ajaxStop" );
			}
		}
		
		function trigger(type, args) {
			(s.context ? jQuery(s.context) : jQuery.event).trigger(type, args);
		}

		// return XMLHttpRequest to allow aborting the request etc.
		return xhr;
	},

	handleError: function( s, xhr, status, e ) {
		// If a local callback was specified, fire it
		if ( s.error ) {
			s.error.call( s.context || s, xhr, status, e );
		}

		// Fire the global callback
		if ( s.global ) {
			(s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] );
		}
	},

	// Counter for holding the number of active queries
	active: 0,

	// Determines if an XMLHttpRequest was successful or not
	httpSuccess: function( xhr ) {
		try {
			// IE error sometimes returns 1223 when it should be 204 so treat it as success, see #1450
			return !xhr.status && location.protocol === "file:" ||
				// Opera returns 0 when status is 304
				( xhr.status >= 200 && xhr.status < 300 ) ||
				xhr.status === 304 || xhr.status === 1223 || xhr.status === 0;
		} catch(e) {}

		return false;
	},

	// Determines if an XMLHttpRequest returns NotModified
	httpNotModified: function( xhr, url ) {
		var lastModified = xhr.getResponseHeader("Last-Modified"),
			etag = xhr.getResponseHeader("Etag");

		if ( lastModified ) {
			jQuery.lastModified[url] = lastModified;
		}

		if ( etag ) {
			jQuery.etag[url] = etag;
		}

		// Opera returns 0 when status is 304
		return xhr.status === 304 || xhr.status === 0;
	},

	httpData: function( xhr, type, s ) {
		var ct = xhr.getResponseHeader("content-type") || "",
			xml = type === "xml" || !type && ct.indexOf("xml") >= 0,
			data = xml ? xhr.responseXML : xhr.responseText;

		if ( xml && data.documentElement.nodeName === "parsererror" ) {
			jQuery.error( "parsererror" );
		}

		// Allow a pre-filtering function to sanitize the response
		// s is checked to keep backwards compatibility
		if ( s && s.dataFilter ) {
			data = s.dataFilter( data, type );
		}

		// The filter can actually parse the response
		if ( typeof data === "string" ) {
			// Get the JavaScript object, if JSON is used.
			if ( type === "json" || !type && ct.indexOf("json") >= 0 ) {
				data = jQuery.parseJSON( data );

			// If the type is "script", eval it in global context
			} else if ( type === "script" || !type && ct.indexOf("javascript") >= 0 ) {
				jQuery.globalEval( data );
			}
		}

		return data;
	},

	// Serialize an array of form elements or a set of
	// key/values into a query string
	param: function( a, traditional ) {
		var s = [];
		
		// Set traditional to true for jQuery <= 1.3.2 behavior.
		if ( traditional === undefined ) {
			traditional = jQuery.ajaxSettings.traditional;
		}
		
		// If an array was passed in, assume that it is an array of form elements.
		if ( jQuery.isArray(a) || a.jquery ) {
			// 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 ( var prefix in a ) {
				buildParams( prefix, a[prefix] );
			}
		}

		// Return the resulting serialization
		return s.join("&").replace(r20, "+");

		function buildParams( prefix, obj ) {
			if ( jQuery.isArray(obj) ) {
				// Serialize array item.
				jQuery.each( obj, function( i, v ) {
					if ( traditional ) {
						// 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" || jQuery.isArray(v) ? i : "" ) + "]", v );
					}
				});
					
			} else if ( !traditional && obj != null && typeof obj === "object" ) {
				// Serialize object item.
				jQuery.each( obj, function( k, v ) {
					buildParams( prefix + "[" + k + "]", v );
				});
					
			} else {
				// Serialize scalar item.
				add( prefix, obj );
			}
		}

		function add( key, value ) {
			// If value is a function, invoke it and return its value
			value = jQuery.isFunction(value) ? value() : value;
			s[ s.length ] = encodeURIComponent(key) + "=" + encodeURIComponent(value);
		}
	}
});
var elemdisplay = {},
	rfxtypes = /toggle|show|hide/,
	rfxnum = /^([+-]=)?([\d+-.]+)(.*)$/,
	timerId,
	fxAttrs = [
		// height animations
		[ "height", "marginTop", "marginBottom", "paddingTop", "paddingBottom" ],
		// width animations
		[ "width", "marginLeft", "marginRight", "paddingLeft", "paddingRight" ],
		// opacity animations
		[ "opacity" ]
	];

jQuery.fn.extend({
	show: function( speed, callback ) {
		if ( speed || speed === 0) {
			return this.animate( genFx("show", 3), speed, callback);

		} else {
			for ( var i = 0, l = this.length; i < l; i++ ) {
				var old = jQuery.data(this[i], "olddisplay");

				this[i].style.display = old || "";

				if ( jQuery.css(this[i], "display") === "none" ) {
					var nodeName = this[i].nodeName, display;

					if ( elemdisplay[ nodeName ] ) {
						display = elemdisplay[ nodeName ];

					} else {
						var elem = jQuery("<" + nodeName + " />").appendTo("body");

						display = elem.css("display");

						if ( display === "none" ) {
							display = "block";
						}

						elem.remove();

						elemdisplay[ nodeName ] = display;
					}

					jQuery.data(this[i], "olddisplay", display);
				}
			}

			// Set the display of the elements in a second loop
			// to avoid the constant reflow
			for ( var j = 0, k = this.length; j < k; j++ ) {
				this[j].style.display = jQuery.data(this[j], "olddisplay") || "";
			}

			return this;
		}
	},

	hide: function( speed, callback ) {
		if ( speed || speed === 0 ) {
			return this.animate( genFx("hide", 3), speed, callback);

		} else {
			for ( var i = 0, l = this.length; i < l; i++ ) {
				var old = jQuery.data(this[i], "olddisplay");
				if ( !old && old !== "none" ) {
					jQuery.data(this[i], "olddisplay", jQuery.css(this[i], "display"));
				}
			}

			// Set the display of the elements in a second loop
			// to avoid the constant reflow
			for ( var j = 0, k = this.length; j < k; j++ ) {
				this[j].style.display = "none";
			}

			return this;
		}
	},

	// Save the old toggle function
	_toggle: jQuery.fn.toggle,

	toggle: function( fn, fn2 ) {
		var bool = typeof fn === "boolean";

		if ( jQuery.isFunction(fn) && jQuery.isFunction(fn2) ) {
			this._toggle.apply( this, arguments );

		} else if ( fn == null || bool ) {
			this.each(function() {
				var state = bool ? fn : jQuery(this).is(":hidden");
				jQuery(this)[ state ? "show" : "hide" ]();
			});

		} else {
			this.animate(genFx("toggle", 3), fn, fn2);
		}

		return this;
	},

	fadeTo: function( speed, to, callback ) {
		return this.filter(":hidden").css("opacity", 0).show().end()
					.animate({opacity: to}, speed, callback);
	},

	animate: function( prop, speed, easing, callback ) {
		var optall = jQuery.speed(speed, easing, callback);

		if ( jQuery.isEmptyObject( prop ) ) {
			return this.each( optall.complete );
		}

		return this[ optall.queue === false ? "each" : "queue" ](function() {
			var opt = jQuery.extend({}, optall), p,
				hidden = this.nodeType === 1 && jQuery(this).is(":hidden"),
				self = this;

			for ( p in prop ) {
				var name = p.replace(rdashAlpha, fcamelCase);

				if ( p !== name ) {
					prop[ name ] = prop[ p ];
					delete prop[ p ];
					p = name;
				}

				if ( prop[p] === "hide" && hidden || prop[p] === "show" && !hidden ) {
					return opt.complete.call(this);
				}

				if ( ( p === "height" || p === "width" ) && this.style ) {
					// Store display property
					opt.display = jQuery.css(this, "display");

					// Make sure that nothing sneaks out
					opt.overflow = this.style.overflow;
				}

				if ( jQuery.isArray( prop[p] ) ) {
					// Create (if needed) and add to specialEasing
					(opt.specialEasing = opt.specialEasing || {})[p] = prop[p][1];
					prop[p] = prop[p][0];
				}
			}

			if ( opt.overflow != null ) {
				this.style.overflow = "hidden";
			}

			opt.curAnim = jQuery.extend({}, prop);

			jQuery.each( prop, function( name, val ) {
				var e = new jQuery.fx( self, opt, name );

				if ( rfxtypes.test(val) ) {
					e[ val === "toggle" ? hidden ? "show" : "hide" : val ]( prop );

				} else {
					var parts = rfxnum.exec(val),
						start = e.cur(true) || 0;

					if ( parts ) {
						var end = parseFloat( parts[2] ),
							unit = parts[3] || "px";

						// We need to compute starting value
						if ( unit !== "px" ) {
							self.style[ name ] = (end || 1) + unit;
							start = ((end || 1) / e.cur(true)) * start;
							self.style[ name ] = start + unit;
						}

						// If a +=/-= token was provided, we're doing a relative animation
						if ( parts[1] ) {
							end = ((parts[1] === "-=" ? -1 : 1) * end) + start;
						}

						e.custom( start, end, unit );

					} else {
						e.custom( start, val, "" );
					}
				}
			});

			// For JS strict compliance
			return true;
		});
	},

	stop: function( clearQueue, gotoEnd ) {
		var timers = jQuery.timers;

		if ( clearQueue ) {
			this.queue([]);
		}

		this.each(function() {
			// go in reverse order so anything added to the queue during the loop is ignored
			for ( var i = timers.length - 1; i >= 0; i-- ) {
				if ( timers[i].elem === this ) {
					if (gotoEnd) {
						// force the next step to be the last
						timers[i](true);
					}

					timers.splice(i, 1);
				}
			}
		});

		// start the next in the queue if the last step wasn't forced
		if ( !gotoEnd ) {
			this.dequeue();
		}

		return this;
	}

});

// Generate shortcuts for custom animations
jQuery.each({
	slideDown: genFx("show", 1),
	slideUp: genFx("hide", 1),
	slideToggle: genFx("toggle", 1),
	fadeIn: { opacity: "show" },
	fadeOut: { opacity: "hide" }
}, function( name, props ) {
	jQuery.fn[ name ] = function( speed, callback ) {
		return this.animate( props, speed, callback );
	};
});

jQuery.extend({
	speed: function( speed, easing, fn ) {
		var opt = speed && typeof speed === "object" ? 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 :
			jQuery.fx.speeds[opt.duration] || jQuery.fx.speeds._default;

		// Queueing
		opt.old = opt.complete;
		opt.complete = function() {
			if ( opt.queue !== false ) {
				jQuery(this).dequeue();
			}
			if ( jQuery.isFunction( opt.old ) ) {
				opt.old.call( this );
			}
		};

		return opt;
	},

	easing: {
		linear: function( p, n, firstNum, diff ) {
			return firstNum + diff * p;
		},
		swing: function( p, n, firstNum, diff ) {
			return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
		}
	},

	timers: [],

	fx: function( elem, options, prop ) {
		this.options = options;
		this.elem = elem;
		this.prop = prop;

		if ( !options.orig ) {
			options.orig = {};
		}
	}

});

jQuery.fx.prototype = {
	// Simple function for setting a style value
	update: function() {
		if ( this.options.step ) {
			this.options.step.call( this.elem, this.now, this );
		}

		(jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );

		// Set display property to block for height/width animations
		if ( ( this.prop === "height" || this.prop === "width" ) && this.elem.style ) {
			this.elem.style.display = "block";
		}
	},

	// Get the current size
	cur: function( force ) {
		if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) ) {
			return this.elem[ this.prop ];
		}

		var r = parseFloat(jQuery.css(this.elem, this.prop, force));
		return r && r > -10000 ? r : parseFloat(jQuery.curCSS(this.elem, this.prop)) || 0;
	},

	// Start an animation from one number to another
	custom: function( from, to, unit ) {
		this.startTime = now();
		this.start = from;
		this.end = to;
		this.unit = unit || this.unit || "px";
		this.now = this.start;
		this.pos = this.state = 0;

		var self = this;
		function t( gotoEnd ) {
			return self.step(gotoEnd);
		}

		t.elem = this.elem;

		if ( t() && jQuery.timers.push(t) && !timerId ) {
			timerId = setInterval(jQuery.fx.tick, 13);
		}
	},

	// Simple 'show' function
	show: function() {
		// Remember where we started, so that we can go back to it later
		this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
		this.options.show = true;

		// Begin the animation
		// Make sure that we start at a small width/height to avoid any
		// flash of content
		this.custom(this.prop === "width" || this.prop === "height" ? 1 : 0, this.cur());

		// Start by showing the element
		jQuery( this.elem ).show();
	},

	// Simple 'hide' function
	hide: function() {
		// Remember where we started, so that we can go back to it later
		this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
		this.options.hide = true;

		// Begin the animation
		this.custom(this.cur(), 0);
	},

	// Each step of an animation
	step: function( gotoEnd ) {
		var t = now(), done = true;

		if ( gotoEnd || t >= this.options.duration + this.startTime ) {
			this.now = this.end;
			this.pos = this.state = 1;
			this.update();

			this.options.curAnim[ this.prop ] = true;

			for ( var i in this.options.curAnim ) {
				if ( this.options.curAnim[i] !== true ) {
					done = false;
				}
			}

			if ( done ) {
				if ( this.options.display != null ) {
					// Reset the overflow
					this.elem.style.overflow = this.options.overflow;

					// Reset the display
					var old = jQuery.data(this.elem, "olddisplay");
					this.elem.style.display = old ? old : this.options.display;

					if ( jQuery.css(this.elem, "display") === "none" ) {
						this.elem.style.display = "block";
					}
				}

				// Hide the element if the "hide" operation was done
				if ( this.options.hide ) {
					jQuery(this.elem).hide();
				}

				// Reset the properties, if the item has been hidden or shown
				if ( this.options.hide || this.options.show ) {
					for ( var p in this.options.curAnim ) {
						jQuery.style(this.elem, p, this.options.orig[p]);
					}
				}

				// Execute the complete function
				this.options.complete.call( this.elem );
			}

			return false;

		} else {
			var n = t - this.startTime;
			this.state = n / this.options.duration;

			// Perform the easing function, defaults to swing
			var specialEasing = this.options.specialEasing && this.options.specialEasing[this.prop];
			var defaultEasing = this.options.easing || (jQuery.easing.swing ? "swing" : "linear");
			this.pos = jQuery.easing[specialEasing || defaultEasing](this.state, n, 0, 1, this.options.duration);
			this.now = this.start + ((this.end - this.start) * this.pos);

			// Perform the next step of the animation
			this.update();
		}

		return true;
	}
};

jQuery.extend( jQuery.fx, {
	tick: function() {
		var timers = jQuery.timers;

		for ( var i = 0; i < timers.length; i++ ) {
			if ( !timers[i]() ) {
				timers.splice(i--, 1);
			}
		}

		if ( !timers.length ) {
			jQuery.fx.stop();
		}
	},
		
	stop: function() {
		clearInterval( timerId );
		timerId = null;
	},
	
	speeds: {
		slow: 600,
 		fast: 200,
 		// Default speed
 		_default: 400
	},

	step: {
		opacity: function( fx ) {
			jQuery.style(fx.elem, "opacity", fx.now);
		},

		_default: function( fx ) {
			if ( fx.elem.style && fx.elem.style[ fx.prop ] != null ) {
				fx.elem.style[ fx.prop ] = (fx.prop === "width" || fx.prop === "height" ? Math.max(0, fx.now) : fx.now) + fx.unit;
			} else {
				fx.elem[ fx.prop ] = fx.now;
			}
		}
	}
});

if ( jQuery.expr && jQuery.expr.filters ) {
	jQuery.expr.filters.animated = function( elem ) {
		return jQuery.grep(jQuery.timers, function( fn ) {
			return elem === fn.elem;
		}).length;
	};
}

function genFx( type, num ) {
	var obj = {};

	jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() {
		obj[ this ] = type;
	});

	return obj;
}
if ( "getBoundingClientRect" in document.documentElement ) {
	jQuery.fn.offset = function( options ) {
		var elem = this[0];

		if ( options ) { 
			return this.each(function( i ) {
				jQuery.offset.setOffset( this, options, i );
			});
		}

		if ( !elem || !elem.ownerDocument ) {
			return null;
		}

		if ( elem === elem.ownerDocument.body ) {
			return jQuery.offset.bodyOffset( elem );
		}

		var box = elem.getBoundingClientRect(), doc = elem.ownerDocument, body = doc.body, docElem = doc.documentElement,
			clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0,
			top  = box.top  + (self.pageYOffset || jQuery.support.boxModel && docElem.scrollTop  || body.scrollTop ) - clientTop,
			left = box.left + (self.pageXOffset || jQuery.support.boxModel && docElem.scrollLeft || body.scrollLeft) - clientLeft;

		return { top: top, left: left };
	};

} else {
	jQuery.fn.offset = function( options ) {
		var elem = this[0];

		if ( options ) { 
			return this.each(function( i ) {
				jQuery.offset.setOffset( this, options, i );
			});
		}

		if ( !elem || !elem.ownerDocument ) {
			return null;
		}

		if ( elem === elem.ownerDocument.body ) {
			return jQuery.offset.bodyOffset( elem );
		}

		jQuery.offset.initialize();

		var offsetParent = elem.offsetParent, prevOffsetParent = elem,
			doc = elem.ownerDocument, computedStyle, docElem = doc.documentElement,
			body = doc.body, defaultView = doc.defaultView,
			prevComputedStyle = defaultView ? defaultView.getComputedStyle( elem, null ) : elem.currentStyle,
			top = elem.offsetTop, left = elem.offsetLeft;

		while ( (elem = elem.parentNode) && elem !== body && elem !== docElem ) {
			if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) {
				break;
			}

			computedStyle = defaultView ? defaultView.getComputedStyle(elem, null) : elem.currentStyle;
			top  -= elem.scrollTop;
			left -= elem.scrollLeft;

			if ( elem === offsetParent ) {
				top  += elem.offsetTop;
				left += elem.offsetLeft;

				if ( jQuery.offset.doesNotAddBorder && !(jQuery.offset.doesAddBorderForTableAndCells && /^t(able|d|h)$/i.test(elem.nodeName)) ) {
					top  += parseFloat( computedStyle.borderTopWidth  ) || 0;
					left += parseFloat( computedStyle.borderLeftWidth ) || 0;
				}

				prevOffsetParent = offsetParent, offsetParent = elem.offsetParent;
			}

			if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" ) {
				top  += parseFloat( computedStyle.borderTopWidth  ) || 0;
				left += parseFloat( computedStyle.borderLeftWidth ) || 0;
			}

			prevComputedStyle = computedStyle;
		}

		if ( prevComputedStyle.position === "relative" || prevComputedStyle.position === "static" ) {
			top  += body.offsetTop;
			left += body.offsetLeft;
		}

		if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) {
			top  += Math.max( docElem.scrollTop, body.scrollTop );
			left += Math.max( docElem.scrollLeft, body.scrollLeft );
		}

		return { top: top, left: left };
	};
}

jQuery.offset = {
	initialize: function() {
		var body = document.body, container = document.createElement("div"), innerDiv, checkDiv, table, td, bodyMarginTop = parseFloat( jQuery.curCSS(body, "marginTop", true) ) || 0,
			html = "<div style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;'><div></div></div><table style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;' cellpadding='0' cellspacing='0'><tr><td></td></tr></table>";

		jQuery.extend( container.style, { position: "absolute", top: 0, left: 0, margin: 0, border: 0, width: "1px", height: "1px", visibility: "hidden" } );

		container.innerHTML = html;
		body.insertBefore( container, body.firstChild );
		innerDiv = container.firstChild;
		checkDiv = innerDiv.firstChild;
		td = innerDiv.nextSibling.firstChild.firstChild;

		this.doesNotAddBorder = (checkDiv.offsetTop !== 5);
		this.doesAddBorderForTableAndCells = (td.offsetTop === 5);

		checkDiv.style.position = "fixed", checkDiv.style.top = "20px";
		// safari subtracts parent border width here which is 5px
		this.supportsFixedPosition = (checkDiv.offsetTop === 20 || checkDiv.offsetTop === 15);
		checkDiv.style.position = checkDiv.style.top = "";

		innerDiv.style.overflow = "hidden", innerDiv.style.position = "relative";
		this.subtractsBorderForOverflowNotVisible = (checkDiv.offsetTop === -5);

		this.doesNotIncludeMarginInBodyOffset = (body.offsetTop !== bodyMarginTop);

		body.removeChild( container );
		body = container = innerDiv = checkDiv = table = td = null;
		jQuery.offset.initialize = jQuery.noop;
	},

	bodyOffset: function( body ) {
		var top = body.offsetTop, left = body.offsetLeft;

		jQuery.offset.initialize();

		if ( jQuery.offset.doesNotIncludeMarginInBodyOffset ) {
			top  += parseFloat( jQuery.curCSS(body, "marginTop",  true) ) || 0;
			left += parseFloat( jQuery.curCSS(body, "marginLeft", true) ) || 0;
		}

		return { top: top, left: left };
	},
	
	setOffset: function( elem, options, i ) {
		// set position first, in-case top/left are set even on static elem
		if ( /static/.test( jQuery.curCSS( elem, "position" ) ) ) {
			elem.style.position = "relative";
		}
		var curElem   = jQuery( elem ),
			curOffset = curElem.offset(),
			curTop    = parseInt( jQuery.curCSS( elem, "top",  true ), 10 ) || 0,
			curLeft   = parseInt( jQuery.curCSS( elem, "left", true ), 10 ) || 0;

		if ( jQuery.isFunction( options ) ) {
			options = options.call( elem, i, curOffset );
		}

		var props = {
			top:  (options.top  - curOffset.top)  + curTop,
			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 null;
		}

		var elem = this[0],

		// Get *real* offsetParent
		offsetParent = this.offsetParent(),

		// Get correct offsets
		offset       = this.offset(),
		parentOffset = /^body|html$/i.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.curCSS(elem, "marginTop",  true) ) || 0;
		offset.left -= parseFloat( jQuery.curCSS(elem, "marginLeft", true) ) || 0;

		// Add offsetParent borders
		parentOffset.top  += parseFloat( jQuery.curCSS(offsetParent[0], "borderTopWidth",  true) ) || 0;
		parentOffset.left += parseFloat( jQuery.curCSS(offsetParent[0], "borderLeftWidth", true) ) || 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 && (!/^body|html$/i.test(offsetParent.nodeName) && jQuery.css(offsetParent, "position") === "static") ) {
				offsetParent = offsetParent.offsetParent;
			}
			return offsetParent;
		});
	}
});


// Create scrollLeft and scrollTop methods
jQuery.each( ["Left", "Top"], function( i, name ) {
	var method = "scroll" + name;

	jQuery.fn[ method ] = function(val) {
		var elem = this[0], win;
		
		if ( !elem ) {
			return null;
		}

		if ( val !== undefined ) {
			// Set the scroll offset
			return this.each(function() {
				win = getWindow( this );

				if ( win ) {
					win.scrollTo(
						!i ? val : jQuery(win).scrollLeft(),
						 i ? val : jQuery(win).scrollTop()
					);

				} else {
					this[ method ] = val;
				}
			});
		} else {
			win = getWindow( elem );

			// Return the scroll offset
			return win ? ("pageXOffset" in win) ? win[ i ? "pageYOffset" : "pageXOffset" ] :
				jQuery.support.boxModel && win.document.documentElement[ method ] ||
					win.document.body[ method ] :
				elem[ method ];
		}
	};
});

function getWindow( elem ) {
	return ("scrollTo" in elem && elem.document) ?
		elem :
		elem.nodeType === 9 ?
			elem.defaultView || elem.parentWindow :
			false;
}
// Create innerHeight, innerWidth, outerHeight and outerWidth methods
jQuery.each([ "Height", "Width" ], function( i, name ) {

	var type = name.toLowerCase();

	// innerHeight and innerWidth
	jQuery.fn["inner" + name] = function() {
		return this[0] ?
			jQuery.css( this[0], type, false, "padding" ) :
			null;
	};

	// outerHeight and outerWidth
	jQuery.fn["outer" + name] = function( margin ) {
		return this[0] ?
			jQuery.css( this[0], type, false, margin ? "margin" : "border" ) :
			null;
	};

	jQuery.fn[ type ] = function( size ) {
		// Get window width or height
		var elem = this[0];
		if ( !elem ) {
			return size == null ? null : this;
		}
		
		if ( jQuery.isFunction( size ) ) {
			return this.each(function( i ) {
				var self = jQuery( this );
				self[ type ]( size.call( this, i, self[ type ]() ) );
			});
		}

		return ("scrollTo" in elem && elem.document) ? // does it walk and quack like a window?
			// Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
			elem.document.compatMode === "CSS1Compat" && elem.document.documentElement[ "client" + name ] ||
			elem.document.body[ "client" + name ] :

			// Get document width or height
			(elem.nodeType === 9) ? // is it a document
				// Either scroll[Width/Height] or offset[Width/Height], whichever is greater
				Math.max(
					elem.documentElement["client" + name],
					elem.body["scroll" + name], elem.documentElement["scroll" + name],
					elem.body["offset" + name], elem.documentElement["offset" + name]
				) :

				// Get or set width or height on the element
				size === undefined ?
					// Get width or height on the element
					jQuery.css( elem, type ) :

					// Set the width or height on the element (default to pixels if value is unitless)
					this.css( type, typeof size === "string" ? size : size + "px" );
	};

});
// Expose jQuery to the global object
window.jQuery = window.$ = jQuery;

})(window);

var __ = "incomplete";

// ignore this. It simplifies determining array equality
Array.prototype.equalTo = function(compareTo) {
	if (this.length !== compareTo.length) {
		return false;
	}
	for(var i = 0; i < compareTo.length; i++) {
		if (this[i] !== compareTo[i]) {
			return false;
		}
	}
	return true;
};

(function() {

	var lastAssertLogReason, ignoreFurtherFailures = false;
	var zenMessages = [
		"The path to enlightenment has many stones",
		"Do not stray from your path, for enlightenment comes with perseverance",
		"The only Zen you find on tops of mountains is the Zen you bring there",
		"Enlightenment occurs when someone becomes inspired by information and uses it to enhance their life",
		"Be master of mind rather than mastered by mind",
		"Zen is not some kind of excitement, but concentration on our usual everyday routine",
		"I think self-awareness is probably the most important thing towards being a champion",
		"The reward of all action is to be found in enlightenment",
		"lasting enlightenment can be achieved only through persistent exercise of real love",
		"The real meaning of enlightenment is to gaze with undimmed eyes on all darkness",
		"Do not think you will necessarily be aware of your own enlightenment",
		"Enlightenment must come little by little - otherwise it would overwhelm",
		"The greatest gift is to give people your enlightenment, to share it. It has to be the greatest",
		"In the beginner's mind there are many possibilities, but in the expert's mind there are few",
		"Only the hand that erases can write the true thing",
		"Enlightenment is ego's ultimate disappointment",
		"Man suffers only because he takes seriously what the gods made for fun",
		"It is easy to believe we are each waves and forget we are also the ocean",
		"Working out is my biggest hobby. It's my Zen hour. I just zone out",
		"A self-motivation is an enlightenment of mind, empowerment of heart and enrichment of soul to arise, awake and ascend to achieve the noble and coveted goal even if it entails walking on its enervating path all alone"
	];

	QUnit.config.reorder = false;

	QUnit.done(function(results) {
		var failures = results.failed;
		var total = results.total;
		if (failures > 0) {
			var failed = $('ol#qunit-tests > li.fail');
			failed.hide();
			$(failed[0]).show();
		}
		if (failures < total) {
			$('h3.welcome_message').hide();
		}
		if (failures > 0) {
			$("#zen-help").show();
		}
		$("body").scrollTop($(document).height());
	});

	QUnit.log(function(result) {
		lastAssertLogReason = result.message;
	});

	QUnit.testDone(function(result) {
		var message;
		if (!ignoreFurtherFailures && result.failed > 0) {
			ignoreFurtherFailures = true;
			message = "" + randomZenMessage() + "\nTry meditating on this: " + result.module + ": " + result.name + " (" + lastAssertLogReason + ")";
			$("#zen-help").html(message.replace(/\n/g, "<br /><br />"));
			console.log(message);
		}
	});

	function randomZenMessage() {
		var randomIndex = Math.floor(Math.random() * zenMessages.length);
		var zenMessage = zenMessages[randomIndex];
		zenMessage = zenMessage.charAt(0).toUpperCase() + zenMessage.substr(1);
		return "" + zenMessage + ".";
	}

})();
/**
 * QUnit v1.12.0 - A JavaScript Unit Testing Framework
 *
 * http://qunitjs.com
 *
 * Copyright 2012 jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

/** Font Family and Sizes */

#qunit-tests, #qunit-header, #qunit-banner, #qunit-testrunner-toolbar, #qunit-userAgent, #qunit-testresult {
	font-family: "Helvetica Neue Light", "HelveticaNeue-Light", "Helvetica Neue", Calibri, Helvetica, Arial, sans-serif;
}

#qunit-testrunner-toolbar, #qunit-userAgent, #qunit-testresult, #qunit-tests li { font-size: small; }
#qunit-tests { font-size: smaller; }


/** Resets */

#qunit-tests, #qunit-header, #qunit-banner, #qunit-userAgent, #qunit-testresult, #qunit-modulefilter {
	margin: 0;
	padding: 0;
}


/** Header */

#qunit-header {
	padding: 0.5em 0 0.5em 1em;

	color: #8699a4;
	background-color: #0d3349;

	font-size: 1.5em;
	line-height: 1em;
	font-weight: normal;

	border-radius: 5px 5px 0 0;
	-moz-border-radius: 5px 5px 0 0;
	-webkit-border-top-right-radius: 5px;
	-webkit-border-top-left-radius: 5px;
}

#qunit-header a {
	text-decoration: none;
	color: #c2ccd1;
}

#qunit-header a:hover,
#qunit-header a:focus {
	color: #fff;
}

#qunit-testrunner-toolbar label {
	display: inline-block;
	padding: 0 .5em 0 .1em;
}

#qunit-banner {
	height: 5px;
}

#qunit-testrunner-toolbar {
	padding: 0.5em 0 0.5em 2em;
	color: #5E740B;
	background-color: #eee;
	overflow: hidden;
}

#qunit-userAgent {
	padding: 0.5em 0 0.5em 2.5em;
	background-color: #2b81af;
	color: #fff;
	text-shadow: rgba(0, 0, 0, 0.5) 2px 2px 1px;
}

#qunit-modulefilter-container {
	float: right;
}

/** Tests: Pass/Fail */

#qunit-tests {
	list-style-position: inside;
}

#qunit-tests li {
	padding: 0.4em 0.5em 0.4em 2.5em;
	border-bottom: 1px solid #fff;
	list-style-position: inside;
}

#qunit-tests.hidepass li.pass, #qunit-tests.hidepass li.running  {
	display: none;
}

#qunit-tests li strong {
	cursor: pointer;
}

#qunit-tests li a {
	padding: 0.5em;
	color: #c2ccd1;
	text-decoration: none;
}
#qunit-tests li a:hover,
#qunit-tests li a:focus {
	color: #000;
}

#qunit-tests li .runtime {
	float: right;
	font-size: smaller;
}

.qunit-assert-list {
	margin-top: 0.5em;
	padding: 0.5em;

	background-color: #fff;

	border-radius: 5px;
	-moz-border-radius: 5px;
	-webkit-border-radius: 5px;
}

.qunit-collapsed {
	display: none;
}

#qunit-tests table {
	border-collapse: collapse;
	margin-top: .2em;
}

#qunit-tests th {
	text-align: right;
	vertical-align: top;
	padding: 0 .5em 0 0;
}

#qunit-tests td {
	vertical-align: top;
}

#qunit-tests pre {
	margin: 0;
	white-space: pre-wrap;
	word-wrap: break-word;
}

#qunit-tests del {
	background-color: #e0f2be;
	color: #374e0c;
	text-decoration: none;
}

#qunit-tests ins {
	background-color: #ffcaca;
	color: #500;
	text-decoration: none;
}

/*** Test Counts */

#qunit-tests b.counts                       { color: black; }
#qunit-tests b.passed                       { color: #5E740B; }
#qunit-tests b.failed                       { color: #710909; }

#qunit-tests li li {
	padding: 5px;
	background-color: #fff;
	border-bottom: none;
	list-style-position: inside;
}

/*** Passing Styles */

#qunit-tests li li.pass {
	color: #3c510c;
	background-color: #fff;
	border-left: 10px solid #C6E746;
}

#qunit-tests .pass                          { color: #528CE0; background-color: #D2E0E6; }
#qunit-tests .pass .test-name               { color: #366097; }

#qunit-tests .pass .test-actual,
#qunit-tests .pass .test-expected           { color: #999999; }

#qunit-banner.qunit-pass                    { background-color: #C6E746; }

/*** Failing Styles */

#qunit-tests li li.fail {
	color: #710909;
	background-color: #fff;
	border-left: 10px solid #EE5757;
	white-space: pre;
}

#qunit-tests > li:last-child {
	border-radius: 0 0 5px 5px;
	-moz-border-radius: 0 0 5px 5px;
	-webkit-border-bottom-right-radius: 5px;
	-webkit-border-bottom-left-radius: 5px;
}

#qunit-tests .fail                          { color: #000000; background-color: #EE5757; }
#qunit-tests .fail .test-name,
#qunit-tests .fail .module-name             { color: #000000; }

#qunit-tests .fail .test-actual             { color: #EE5757; }
#qunit-tests .fail .test-expected           { color: green;   }

#qunit-banner.qunit-fail                    { background-color: #EE5757; }


/** Result */

#qunit-testresult {
	padding: 0.5em 0.5em 0.5em 2.5em;

	color: #2b81af;
	background-color: #D2E0E6;

	border-bottom: 1px solid white;
}
#qunit-testresult .module-name {
	font-weight: bold;
}

/** Fixture */

#qunit-fixture {
	position: absolute;
	top: -10000px;
	left: -10000px;
	width: 1000px;
	height: 1000px;
}
/**
 * QUnit v1.12.0 - A JavaScript Unit Testing Framework
 *
 * http://qunitjs.com
 *
 * Copyright 2013 jQuery Foundation and other contributors
 * Released under the MIT license.
 * https://jquery.org/license/
 */

(function( window ) {

var QUnit,
	assert,
	config,
	onErrorFnPrev,
	testId = 0,
	fileName = (sourceFromStacktrace( 0 ) || "" ).replace(/(:\d+)+\)?/, "").replace(/.+\//, ""),
	toString = Object.prototype.toString,
	hasOwn = Object.prototype.hasOwnProperty,
	// Keep a local reference to Date (GH-283)
	Date = window.Date,
	setTimeout = window.setTimeout,
	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;
			}
		}())
	},
	/**
	 * Provides a normalized error string, correcting an issue
	 * with IE 7 (and prior) where Error.prototype.toString is
	 * not properly implemented
	 *
	 * Based on http://es5.github.com/#x15.11.4.4
	 *
	 * @param {String|Error} error
	 * @return {String} error message
	 */
	errorString = function( error ) {
		var name, message,
			errorString = error.toString();
		if ( errorString.substring( 0, 7 ) === "[object" ) {
			name = error.name ? error.name.toString() : "Error";
			message = error.message ? error.message.toString() : "";
			if ( name && message ) {
				return name + ": " + message;
			} else if ( name ) {
				return name;
			} else if ( message ) {
				return message;
			} else {
				return "Error";
			}
		} else {
			return errorString;
		}
	},
	/**
	 * Makes a clone of an object using only Array or Object as base,
	 * and copies over the own enumerable properties.
	 *
	 * @param {Object} obj
	 * @return {Object} New object with only the own properties (recursively).
	 */
	objectValues = function( obj ) {
		// Grunt 0.3.x uses an older version of jshint that still has jshint/jshint#392.
		/*jshint newcap: false */
		var key, val,
			vals = QUnit.is( "array", obj ) ? [] : {};
		for ( key in obj ) {
			if ( hasOwn.call( obj, key ) ) {
				val = obj[key];
				vals[key] = val === Object(val) ? objectValues(val) : val;
			}
		}
		return vals;
	};

function Test( settings ) {
	extend( this, settings );
	this.assertions = [];
	this.testNumber = ++Test.count;
}

Test.count = 0;

Test.prototype = {
	init: function() {
		var a, b, li,
			tests = id( "qunit-tests" );

		if ( tests ) {
			b = document.createElement( "strong" );
			b.innerHTML = this.nameHtml;

			// `a` initialized at top of scope
			a = document.createElement( "a" );
			a.innerHTML = "Rerun";
			a.href = QUnit.url({ testNumber: this.testNumber });

			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 (
			// Emit moduleStart when we're switching from one module to another
			this.module !== config.previousModule ||
				// They could be equal (both undefined) but if the previousModule property doesn't
				// yet exist it means this is the first test in a suite that isn't wrapped in a
				// module, in which case we'll just emit a moduleStart event for 'undefined'.
				// Without this, reporters can get testStart before moduleStart  which is a problem.
				!hasOwn.call( config, "previousModule" )
		) {
			if ( hasOwn.call( 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
			});
		}

		config.current = this;

		this.testEnvironment = extend({
			setup: function() {},
			teardown: function() {}
		}, this.moduleTestEnvironment );

		this.started = +new Date();
		runLoggingCallbacks( "testStart", QUnit, {
			name: this.testName,
			module: this.module
		});

		/*jshint camelcase:false */


		/**
		 * Expose the current test environment.
		 *
		 * @deprecated since 1.12.0: Use QUnit.config.current.testEnvironment instead.
		 */
		QUnit.current_testEnvironment = this.testEnvironment;

		/*jshint camelcase:true */

		if ( !config.pollution ) {
			saveGlobal();
		}
		if ( config.notrycatch ) {
			this.testEnvironment.setup.call( this.testEnvironment, QUnit.assert );
			return;
		}
		try {
			this.testEnvironment.setup.call( this.testEnvironment, QUnit.assert );
		} catch( e ) {
			QUnit.pushFailure( "Setup failed on " + this.testName + ": " + ( e.message || e ), extractStacktrace( e, 1 ) );
		}
	},
	run: function() {
		config.current = this;

		var running = id( "qunit-testresult" );

		if ( running ) {
			running.innerHTML = "Running: <br/>" + this.nameHtml;
		}

		if ( this.async ) {
			QUnit.stop();
		}

		this.callbackStarted = +new Date();

		if ( config.notrycatch ) {
			this.callback.call( this.testEnvironment, QUnit.assert );
			this.callbackRuntime = +new Date() - this.callbackStarted;
			return;
		}

		try {
			this.callback.call( this.testEnvironment, QUnit.assert );
			this.callbackRuntime = +new Date() - this.callbackStarted;
		} catch( e ) {
			this.callbackRuntime = +new Date() - this.callbackStarted;

			QUnit.pushFailure( "Died on test #" + (this.assertions.length + 1) + " " + this.stack + ": " + ( e.message || e ), extractStacktrace( e, 0 ) );
			// 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 ) {
			if ( typeof this.callbackRuntime === "undefined" ) {
				this.callbackRuntime = +new Date() - this.callbackStarted;
			}
			this.testEnvironment.teardown.call( this.testEnvironment, QUnit.assert );
			return;
		} else {
			try {
				this.testEnvironment.teardown.call( this.testEnvironment, QUnit.assert );
			} catch( e ) {
				QUnit.pushFailure( "Teardown failed on " + this.testName + ": " + ( e.message || e ), extractStacktrace( e, 1 ) );
			}
		}
		checkPollution();
	},
	finish: function() {
		config.current = this;
		if ( config.requireExpects && this.expected === null ) {
			QUnit.pushFailure( "Expected number of assertions to be defined, but expect() was not called.", this.stack );
		} else 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 i, assertion, a, b, time, li, ol,
			test = this,
			good = 0,
			bad = 0,
			tests = id( "qunit-tests" );

		this.runtime = +new Date() - this.started;
		config.stats.all += this.assertions.length;
		config.moduleStats.all += this.assertions.length;

		if ( tests ) {
			ol = document.createElement( "ol" );
			ol.className = "qunit-assert-list";

			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 ) {
				addClass( ol, "qunit-collapsed" );
			}

			// `b` initialized at top of scope
			b = document.createElement( "strong" );
			b.innerHTML = this.nameHtml + " <b class='counts'>(<b class='failed'>" + bad + "</b>, <b class='passed'>" + good + "</b>, " + this.assertions.length + ")</b>";

			addEvent(b, "click", function() {
				var next = b.parentNode.lastChild,
					collapsed = hasClass( next, "qunit-collapsed" );
				( collapsed ? removeClass : addClass )( next, "qunit-collapsed" );
			});

			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({ testNumber: test.testNumber });
				}
			});

			// `time` initialized at top of scope
			time = document.createElement( "span" );
			time.className = "runtime";
			time.innerHTML = this.runtime + " ms";

			// `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( time );
			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,
			duration: this.runtime
		});

		QUnit.reset();

		config.current = undefined;
	},

	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 );
		}
	}
};

// Root QUnit object.
// `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.currentModuleTestEnvironment = testEnvironment;
		config.modules[name] = true;
	},

	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,
			nameHtml = "<span class='test-name'>" + escapeText( testName ) + "</span>";

		if ( arguments.length === 2 ) {
			callback = expected;
			expected = null;
		}

		if ( config.currentModule ) {
			nameHtml = "<span class='module-name'>" + escapeText( config.currentModule ) + "</span>: " + nameHtml;
		}

		test = new Test({
			nameHtml: nameHtml,
			testName: testName,
			expected: expected,
			async: async,
			callback: callback,
			module: config.currentModule,
			moduleTestEnvironment: config.currentModuleTestEnvironment,
			stack: sourceFromStacktrace( 2 )
		});

		if ( !validTest( test ) ) {
			return;
		}

		test.queue();
	},

	// Specify the number of expected assertions to guarantee that failed test (no assertions are run at all) don't slip through.
	expect: function( asserts ) {
		if (arguments.length === 1) {
			config.current.expected = asserts;
		} else {
			return config.current.expected;
		}
	},

	start: function( count ) {
		// QUnit hasn't been initialized yet.
		// Note: RequireJS (et al) may delay onLoad
		if ( config.semaphore === undefined ) {
			QUnit.begin(function() {
				// This is triggered at the top of QUnit.load, push start() to the event loop, to allow QUnit.load to finish first
				setTimeout(function() {
					QUnit.start( count );
				});
			});
			return;
		}

		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;
			QUnit.pushFailure( "Called start() while already started (QUnit.config.semaphore was 0 already)", null, sourceFromStacktrace(2) );
			return;
		}
		// A slight delay, to avoid any current callbacks
		if ( defined.setTimeout ) {
			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 = setTimeout(function() {
				QUnit.ok( false, "Test timed out" );
				config.semaphore = 1;
				QUnit.start();
			}, config.testTimeout );
		}
	}
};

// `assert` initialized at top of scope
// Assert helpers
// All of these must either call QUnit.push() or manually do:
// - runLoggingCallbacks( "log", .. );
// - config.current.assertions.push({ .. });
// We attach it to the QUnit object *after* we expose the public API,
// otherwise `assert` will become a global variable in browsers (#341).
assert = {
	/**
	 * Asserts rough true-ish result.
	 * @name ok
	 * @function
	 * @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;
		msg = msg || (result ? "okay" : "failed" );

		var source,
			details = {
				module: config.current.module,
				name: config.current.testName,
				result: result,
				message: msg
			};

		msg = "<span class='test-message'>" + escapeText( msg ) + "</span>";

		if ( !result ) {
			source = sourceFromStacktrace( 2 );
			if ( source ) {
				details.source = source;
				msg += "<table><tr class='test-source'><th>Source: </th><td><pre>" + escapeText( source ) + "</pre></td></tr></table>";
			}
		}
		runLoggingCallbacks( "log", QUnit, details );
		config.current.assertions.push({
			result: result,
			message: msg
		});
	},

	/**
	 * Assert that the first two arguments are equal, with an optional message.
	 * Prints out both actual and expected values.
	 * @name equal
	 * @function
	 * @example equal( format( "Received {0} bytes.", 2), "Received 2 bytes.", "format() replaces {0} with next argument" );
	 */
	equal: function( actual, expected, message ) {
		/*jshint eqeqeq:false */
		QUnit.push( expected == actual, actual, expected, message );
	},

	/**
	 * @name notEqual
	 * @function
	 */
	notEqual: function( actual, expected, message ) {
		/*jshint eqeqeq:false */
		QUnit.push( expected != actual, actual, expected, message );
	},

	/**
	 * @name propEqual
	 * @function
	 */
	propEqual: function( actual, expected, message ) {
		actual = objectValues(actual);
		expected = objectValues(expected);
		QUnit.push( QUnit.equiv(actual, expected), actual, expected, message );
	},

	/**
	 * @name notPropEqual
	 * @function
	 */
	notPropEqual: function( actual, expected, message ) {
		actual = objectValues(actual);
		expected = objectValues(expected);
		QUnit.push( !QUnit.equiv(actual, expected), actual, expected, message );
	},

	/**
	 * @name deepEqual
	 * @function
	 */
	deepEqual: function( actual, expected, message ) {
		QUnit.push( QUnit.equiv(actual, expected), actual, expected, message );
	},

	/**
	 * @name notDeepEqual
	 * @function
	 */
	notDeepEqual: function( actual, expected, message ) {
		QUnit.push( !QUnit.equiv(actual, expected), actual, expected, message );
	},

	/**
	 * @name strictEqual
	 * @function
	 */
	strictEqual: function( actual, expected, message ) {
		QUnit.push( expected === actual, actual, expected, message );
	},

	/**
	 * @name notStrictEqual
	 * @function
	 */
	notStrictEqual: function( actual, expected, message ) {
		QUnit.push( expected !== actual, actual, expected, message );
	},

	"throws": function( block, expected, message ) {
		var actual,
			expectedOutput = expected,
			ok = false;

		// 'expected' is optional
		if ( typeof expected === "string" ) {
			message = expected;
			expected = null;
		}

		config.current.ignoreGlobalErrors = true;
		try {
			block.call( config.current.testEnvironment );
		} catch (e) {
			actual = e;
		}
		config.current.ignoreGlobalErrors = false;

		if ( actual ) {
			// we don't want to validate thrown error
			if ( !expected ) {
				ok = true;
				expectedOutput = null;
			// expected is a regexp
			} else if ( QUnit.objectType( expected ) === "regexp" ) {
				ok = expected.test( errorString( 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 ) {
				expectedOutput = null;
				ok = true;
			}

			QUnit.push( ok, actual, expectedOutput, message );
		} else {
			QUnit.pushFailure( message, null, "No exception was thrown." );
		}
	}
};

/**
 * @deprecated since 1.8.0
 * Kept assertion helpers in root for backwards compatibility.
 */
extend( QUnit, assert );

/**
 * @deprecated since 1.9.0
 * Kept root "raises()" for backwards compatibility.
 * (Note that we don't introduce assert.raises).
 */
QUnit.raises = assert[ "throws" ];

/**
 * @deprecated since 1.0.0, replaced with error pushes since 1.3.0
 * Kept to avoid TypeErrors for undefined methods.
 */
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" );
};

// 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;
}());

/**
 * Config object: Maintain internal state
 * Later exposed as QUnit.config
 * `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,

	// when enabled, all tests must call expect()
	requireExpects: false,

	// add checkboxes that are persisted in the query-string
	// when enabled, the id is set to `true` as a `QUnit.config` property
	urlConfig: [
		{
			id: "noglobals",
			label: "Check for Globals",
			tooltip: "Enabling this will test if any test introduces new properties on the `window` object. Stored as query-strings."
		},
		{
			id: "notrycatch",
			label: "No try-catch",
			tooltip: "Enabling this will run tests outside of a try-catch block. Makes debugging exceptions in IE reasonable. Stored as query-strings."
		}
	],

	// Set of all modules.
	modules: {},

	// logging callback queues
	begin: [],
	done: [],
	log: [],
	testStart: [],
	testDone: [],
	moduleStart: [],
	moduleDone: []
};

// Export global variables, unless an 'exports' object exists,
// in that case we assume we're in CommonJS (dealt with on the bottom of the script)
if ( typeof exports === "undefined" ) {
	extend( window, QUnit.constructor.prototype );

	// Expose QUnit object
	window.QUnit = QUnit;
}

// Initialize more QUnit.config and QUnit.urlParams
(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;

	// String search anywhere in moduleName+testName
	config.filter = urlParams.filter;

	// Exact match of the module name
	config.module = urlParams.module;

	config.testNumber = parseInt( urlParams.testNumber, 10 ) || null;

	// Figure out if we're running the tests from a server or not
	QUnit.isLocal = location.protocol === "file:";
}());

// Extend QUnit object,
// these after set here because they should not be exposed as global functions
extend( QUnit, {
	assert: assert,

	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: 1
		});

		var tests, banner, result,
			qunit = id( "qunit" );

		if ( qunit ) {
			qunit.innerHTML =
				"<h1 id='qunit-header'>" + escapeText( 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.
	/*
	DEPRECATED: Use multiple tests instead of resetting inside a test.
	Use testStart or testDone for custom cleanup.
	This method will throw an error in 2.0, and will be removed in 2.1
	*/
	reset: function() {
		var 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 match = toString.call( obj ).match(/^\[object\s(.*)\]$/),
			type = match && match[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 = {
				module: config.current.module,
				name: config.current.testName,
				result: result,
				message: message,
				actual: actual,
				expected: expected
			};

		message = escapeText( message ) || ( result ? "okay" : "failed" );
		message = "<span class='test-message'>" + message + "</span>";
		output = message;

		if ( !result ) {
			expected = escapeText( QUnit.jsDump.parse(expected) );
			actual = escapeText( 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>" + escapeText( source ) + "</pre></td></tr>";
			}

			output += "</table>";
		}

		runLoggingCallbacks( "log", QUnit, details );

		config.current.assertions.push({
			result: !!result,
			message: output
		});
	},

	pushFailure: function( message, source, actual ) {
		if ( !config.current ) {
			throw new Error( "pushFailure() assertion outside test context, was " + sourceFromStacktrace(2) );
		}

		var output,
			details = {
				module: config.current.module,
				name: config.current.testName,
				result: false,
				message: message
			};

		message = escapeText( message ) || "error";
		message = "<span class='test-message'>" + message + "</span>";
		output = message;

		output += "<table>";

		if ( actual ) {
			output += "<tr class='test-actual'><th>Result: </th><td><pre>" + escapeText( actual ) + "</pre></td></tr>";
		}

		if ( source ) {
			details.source = source;
			output += "<tr class='test-source'><th>Source: </th><td><pre>" + escapeText( source ) + "</pre></td></tr>";
		}

		output += "</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 ) ) {
				querystring += encodeURIComponent( key ) + "=" +
					encodeURIComponent( params[ key ] ) + "&";
			}
		}
		return window.location.protocol + "//" + window.location.host +
			window.location.pathname + querystring.slice( 0, -1 );
	},

	extend: extend,
	id: id,
	addEvent: addEvent,
	addClass: addClass,
	hasClass: hasClass,
	removeClass: removeClass
	// load, equiv, jsDump, diff: Attached later
});

/**
 * @deprecated: Created for backwards compatibility with test runner that set the hook function
 * into QUnit.{hook}, instead of invoking it and passing the hook function.
 * QUnit.constructor is set to the empty F() above so that we can add to it's prototype here.
 * Doing this allows us to tell if the following methods have been overwritten on the actual
 * QUnit object.
 */
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, duration }
	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,
		urlConfigCheckboxesContainer, urlConfigCheckboxes, moduleFilter,
		numModules = 0,
		moduleNames = [],
		moduleFilterHtml = "",
		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];
		if ( typeof val === "string" ) {
			val = {
				id: val,
				label: val,
				tooltip: "[no tooltip available]"
			};
		}
		config[ val.id ] = QUnit.urlParams[ val.id ];
		urlConfigHtml += "<input id='qunit-urlconfig-" + escapeText( val.id ) +
			"' name='" + escapeText( val.id ) +
			"' type='checkbox'" + ( config[ val.id ] ? " checked='checked'" : "" ) +
			" title='" + escapeText( val.tooltip ) +
			"'><label for='qunit-urlconfig-" + escapeText( val.id ) +
			"' title='" + escapeText( val.tooltip ) + "'>" + val.label + "</label>";
	}
	for ( i in config.modules ) {
		if ( config.modules.hasOwnProperty( i ) ) {
			moduleNames.push(i);
		}
	}
	numModules = moduleNames.length;
	moduleNames.sort( function( a, b ) {
		return a.localeCompare( b );
	});
	moduleFilterHtml += "<label for='qunit-modulefilter'>Module: </label><select id='qunit-modulefilter' name='modulefilter'><option value='' " +
		( config.module === undefined  ? "selected='selected'" : "" ) +
		">< All Modules ></option>";


	for ( i = 0; i < numModules; i++) {
			moduleFilterHtml += "<option value='" + escapeText( encodeURIComponent(moduleNames[i]) ) + "' " +
				( config.module === moduleNames[i] ? "selected='selected'" : "" ) +
				">" + escapeText(moduleNames[i]) + "</option>";
	}
	moduleFilterHtml += "</select>";

	// `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, module: undefined, testNumber: undefined }) + "'>" + banner.innerHTML + "</a> ";
	}

	// `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.setAttribute( "title", "Only show tests and assertions that fail. Stored in sessionStorage." );
		label.innerHTML = "Hide passed tests";
		toolbar.appendChild( label );

		urlConfigCheckboxesContainer = document.createElement("span");
		urlConfigCheckboxesContainer.innerHTML = urlConfigHtml;
		urlConfigCheckboxes = urlConfigCheckboxesContainer.getElementsByTagName("input");
		// For oldIE support:
		// * Add handlers to the individual elements instead of the container
		// * Use "click" instead of "change"
		// * Fallback from event.target to event.srcElement
		addEvents( urlConfigCheckboxes, "click", function( event ) {
			var params = {},
				target = event.target || event.srcElement;
			params[ target.name ] = target.checked ? true : undefined;
			window.location = QUnit.url( params );
		});
		toolbar.appendChild( urlConfigCheckboxesContainer );

		if (numModules > 1) {
			moduleFilter = document.createElement( "span" );
			moduleFilter.setAttribute( "id", "qunit-modulefilter-container" );
			moduleFilter.innerHTML = moduleFilterHtml;
			addEvent( moduleFilter.lastChild, "change", function() {
				var selectBox = moduleFilter.getElementsByTagName("select")[0],
					selectedModule = decodeURIComponent(selectBox.options[selectBox.selectedIndex].value);

				window.location = QUnit.url({
					module: ( selectedModule === "" ) ? undefined : selectedModule,
					// Remove any existing filters
					filter: undefined,
					testNumber: undefined
				});
			});
			toolbar.appendChild(moduleFilter);
		}
	}

	// `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 );

// `onErrorFnPrev` initialized at top of scope
// Preserve other handlers
onErrorFnPrev = window.onerror;

// Cover uncaught exceptions
// Returning true will suppress the default browser handler,
// returning false will let it run.
window.onerror = function ( error, filePath, linerNr ) {
	var ret = false;
	if ( onErrorFnPrev ) {
		ret = onErrorFnPrev( error, filePath, linerNr );
	}

	// Treat return value as window.onerror itself does,
	// Only do our handling if not suppressed.
	if ( ret !== true ) {
		if ( QUnit.config.current ) {
			if ( QUnit.config.current.ignoreGlobalErrors ) {
				return true;
			}
			QUnit.pushFailure( error, filePath + ":" + linerNr );
		} else {
			QUnit.test( "global failure", extend( function() {
				QUnit.pushFailure( error, filePath + ":" + linerNr );
			}, { validTest: validTest } ) );
		}
		return false;
	}

	return ret;
};

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
		});
	}
	delete config.previousModule;

	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> assertions 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 );
			}
		}
	}

	// scroll back to top to show results
	if ( window.scrollTo ) {
		window.scrollTo(0, 0);
	}

	runLoggingCallbacks( "done", QUnit, {
		failed: config.stats.bad,
		passed: passed,
		total: config.stats.all,
		runtime: runtime
	});
}

/** @return Boolean: true if this test should be ran */
function validTest( test ) {
	var include,
		filter = config.filter && config.filter.toLowerCase(),
		module = config.module && config.module.toLowerCase(),
		fullName = (test.module + ": " + test.testName).toLowerCase();

	// Internally-generated tests are always valid
	if ( test.callback && test.callback.validTest === validTest ) {
		delete test.callback.validTest;
		return true;
	}

	if ( config.testNumber ) {
		return test.testNumber === config.testNumber;
	}

	if ( module && ( !test.module || test.module.toLowerCase() !== module ) ) {
		return false;
	}

	if ( !filter ) {
		return true;
	}

	include = filter.charAt( 0 ) !== "!";
	if ( !include ) {
		filter = filter.slice( 1 );
	}

	// If the filter matches, we need to honour include
	if ( fullName.indexOf( filter ) !== -1 ) {
		return include;
	}

	// Otherwise, do the opposite
	return !include;
}

// 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 === undefined ? 3 : offset;

	var stack, include, i;

	if ( e.stacktrace ) {
		// Opera
		return e.stacktrace.split( "\n" )[ offset + 3 ];
	} else if ( e.stack ) {
		// Firefox, Chrome
		stack = e.stack.split( "\n" );
		if (/^error$/i.test( stack[0] ) ) {
			stack.shift();
		}
		if ( fileName ) {
			include = [];
			for ( i = offset; i < stack.length; i++ ) {
				if ( stack[ i ].indexOf( fileName ) !== -1 ) {
					break;
				}
				include.push( stack[ i ] );
			}
			if ( include.length ) {
				return include.join( "\n" );
			}
		}
		return stack[ offset ];
	} else if ( e.sourceURL ) {
		// Safari, PhantomJS
		// hopefully one day Safari provides actual stacktraces
		// exclude useless self-reference for generated Error objects
		if ( /qunit.js$/.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 );
	}
}

/**
 * Escape text for attribute or text content.
 */
function escapeText( s ) {
	if ( !s ) {
		return "";
	}
	s = s + "";
	// Both single quotes and double quotes (for attributes)
	return s.replace( /['"<>&]/g, function( s ) {
		switch( s ) {
			case "'":
				return "&#039;";
			case "\"":
				return "&quot;";
			case "<":
				return "&lt;";
			case ">":
				return "&gt;";
			case "&":
				return "&amp;";
		}
	});
}

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 {
			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 ) {
			if ( hasOwn.call( window, key ) ) {
				// in Opera sometimes DOM element ids show up here, ignore them
				if ( /^qunit-test-output/.test( key ) ) {
					continue;
				}
				config.pollution.push( key );
			}
		}
	}
}

function checkPollution() {
	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 ( hasOwn.call( b, prop ) ) {
			// Avoid "Member not found" error in IE8 caused by messing with window.constructor
			if ( !( prop === "constructor" && a === window ) ) {
				if ( b[ prop ] === undefined ) {
					delete a[ prop ];
				} else {
					a[ prop ] = b[ prop ];
				}
			}
		}
	}

	return a;
}

/**
 * @param {HTMLElement} elem
 * @param {string} type
 * @param {Function} fn
 */
function addEvent( elem, type, fn ) {
	// Standards-based browsers
	if ( elem.addEventListener ) {
		elem.addEventListener( type, fn, false );
	// IE
	} else {
		elem.attachEvent( "on" + type, fn );
	}
}

/**
 * @param {Array|NodeList} elems
 * @param {string} type
 * @param {Function} fn
 */
function addEvents( elems, type, fn ) {
	var i = elems.length;
	while ( i-- ) {
		addEvent( elems[i], type, fn );
	}
}

function hasClass( elem, name ) {
	return (" " + elem.className + " ").indexOf(" " + name + " ") > -1;
}

function addClass( elem, name ) {
	if ( !hasClass( elem, name ) ) {
		elem.className += (elem.className ? " " : "") + name;
	}
}

function removeClass( elem, name ) {
	var set = " " + elem.className + " ";
	// Class name may appear multiple times
	while ( set.indexOf(" " + name + " ") > -1 ) {
		set = set.replace(" " + name + " " , " ");
	}
	// If possible, trim it for prettiness, but not necessarily
	elem.className = typeof set.trim === "function" ? set.trim() : set.replace(/^\s+|\s+$/g, "");
}

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 ) {
	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 = [],
		parentsB = [],

		getProto = Object.getPrototypeOf || function ( obj ) {
			/*jshint camelcase:false */
			return obj.__proto__;
		},
		callbacks = (function () {

			// for string, boolean, number and null
			function useStrictEquality( b, a ) {
				/*jshint eqeqeq:false */
				if ( b instanceof a.constructor || a instanceof b.constructor ) {
					// to catch short annotation 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 modifiers
						a.global === b.global &&
						// (gmi) ...
						a.ignoreCase === b.ignoreCase &&
						a.multiline === b.multiline &&
						a.sticky === b.sticky;
				},

				// - 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, aCircular, bCircular;

					// 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 );
					parentsB.push( b );
					for ( i = 0; i < len; i++ ) {
						loop = false;
						for ( j = 0; j < parents.length; j++ ) {
							aCircular = parents[j] === a[i];
							bCircular = parentsB[j] === b[i];
							if ( aCircular || bCircular ) {
								if ( a[i] === b[i] || aCircular && bCircular ) {
									loop = true;
								} else {
									parents.pop();
									parentsB.pop();
									return false;
								}
							}
						}
						if ( !loop && !innerEquiv(a[i], b[i]) ) {
							parents.pop();
							parentsB.pop();
							return false;
						}
					}
					parents.pop();
					parentsB.pop();
					return true;
				},

				"object": function( b, a ) {
					/*jshint forin:false */
					var i, j, loop, aCircular, bCircular,
						// 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 );
					parentsB.push( b );

					// be strict: don't ensure hasOwnProperty and go deep
					for ( i in a ) {
						loop = false;
						for ( j = 0; j < parents.length; j++ ) {
							aCircular = parents[j] === a[i];
							bCircular = parentsB[j] === b[i];
							if ( aCircular || bCircular ) {
								if ( a[i] === b[i] || aCircular && bCircular ) {
									loop = true;
								} else {
									eq = false;
									break;
								}
							}
						}
						aProperties.push(i);
						if ( !loop && !innerEquiv(a[i], b[i]) ) {
							eq = false;
							break;
						}
					}

					parents.pop();
					parentsB.pop();
					callers.pop(); // unstack, we are done

					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] ) && innerEquiv.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 = {
			// type is used mostly internally, you can fix a (custom)type in advance
			parse: function( obj, type, stack ) {
				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) + ")";
				}
				if ( type === "function" )  {
					stack.push( obj );
					res = parser.call( this, obj, stack );
					stack.pop();
					return res;
				}
				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 if ( obj.constructor === Error.prototype.constructor ) {
					type = "error";
				} else {
					type = typeof obj;
				}
				return type;
			},
			separator: function() {
				return this.multiline ?	this.HTML ? "<br />" : "\n" : this.HTML ? "&nbsp;" : " ";
			},
			// extra can be a number, shortcut for increasing-calling-decreasing
			indent: function( extra ) {
				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: function(error) {
					return "Error(\"" + error.message + "\")";
				},
				unknown: "[Unknown]",
				"null": "null",
				"undefined": "undefined",
				"function": function( fn ) {
					var ret = "function",
						// functions never have name in IE
						name = "name" in fn ? fn.name : (reName.exec(fn) || [])[1];

					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 ) {
					/*jshint forin:false */
					var ret = [ ], keys, key, val, i;
					QUnit.jsDump.up();
					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 len, i, val,
						open = QUnit.jsDump.HTML ? "&lt;" : "<",
						close = QUnit.jsDump.HTML ? "&gt;" : ">",
						tag = node.nodeName.toLowerCase(),
						ret = open + tag,
						attrs = node.attributes;

					if ( attrs ) {
						for ( i = 0, len = attrs.length; i < len; i++ ) {
							val = attrs[i].nodeValue;
							// IE6 includes all attributes in .attributes, even ones not explicitly set.
							// Those have values like undefined, null, 0, false, "" or "inherit".
							if ( val && val !== "inherit" ) {
								ret += " " + attrs[i].nodeName + "=" + QUnit.jsDump.parse( val, "attribute" );
							}
						}
					}
					ret += close;

					// Show content of TextNode or CDATASection
					if ( node.nodeType === 3 || node.nodeType === 4 ) {
						ret += node.nodeValue;
					}

					return ret + open + "/" + tag + close;
				},
				// function calls it internally, it's the arguments part of the function
				functionArgs: function( fn ) {
					var args,
						l = fn.length;

					if ( !l ) {
						return "";
					}

					args = new Array(l);
					while ( l-- ) {
						// 97 is 'a'
						args[l] = String.fromCharCode(97+l);
					}
					return " " + args.join( ", " ) + " ";
				},
				// object calls it internally, the key part of an item in a map
				key: quote,
				// function calls it internally, it's the content of the function
				functionCode: "[code]",
				// node calls it internally, it's an html attribute value
				attribute: quote,
				string: quote,
				date: quote,
				regexp: literal,
				number: literal,
				"boolean": literal
			},
			// if true, entities are escaped ( <, >, \t, space and \n )
			HTML: false,
			// indentation unit
			indentChar: "  ",
			// if true, items in a collection, are separated by a \n, else just a space.
			multiline: true
		};

	return jsDump;
}());

// 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() {
	/*jshint eqeqeq:false, eqnull:true */
	function diff( o, n ) {
		var i,
			ns = {},
			os = {};

		for ( i = 0; i < n.length; i++ ) {
			if ( !hasOwn.call( ns, n[i] ) ) {
				ns[ n[i] ] = {
					rows: [],
					o: null
				};
			}
			ns[ n[i] ].rows.push( i );
		}

		for ( i = 0; i < o.length; i++ ) {
			if ( !hasOwn.call( os, o[i] ) ) {
				os[ o[i] ] = {
					rows: [],
					n: null
				};
			}
			os[ o[i] ].rows.push( i );
		}

		for ( i in ns ) {
			if ( hasOwn.call( ns, i ) ) {
				if ( ns[i].rows.length === 1 && hasOwn.call( os, i ) && 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 environments, export everything
if ( typeof exports !== "undefined" ) {
	extend( exports, QUnit.constructor.prototype );
}

// get at whatever the global object is, like window in browsers
}( (function() {return this;}.call()) ));
The MIT License (MIT)

Copyright (c) 2013 Liam McLennan

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

module("About Arrays (topics/about_arrays.js)");

test("array literal syntax and indexing", function() {
    var favouriteThings = ["cellar door", 42, true]; // note that array elements do not have to be of the same type
    equal(__, favouriteThings[0], 'what is in the first position of the array?');
    equal(__, favouriteThings[1], 'what is in the second position of the array?');
    equal(__, favouriteThings[2], 'what is in the third position of the array?');
});

test("array type", function() {
    equal(__, typeof([]), 'what is the type of an array?');
});

test("length", function() {
    var collection = ['a','b','c'];
    equal(__, collection.length, 'what is the length of the collection array?');
});

test("splice", function() {
    var daysOfWeek = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'];
    var workingWeek = daysOfWeek.splice(__, __);
    var weekend = daysOfWeek;

    deepEqual(workingWeek, ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday'], 'what is the value of workingWeek?');
    deepEqual(weekend, ['Saturday', 'Sunday'], 'what is the value of weekend?');
});

test("stack methods", function() {
    var stack = [];
    stack.push("first");
    stack.push("second");

    equal(__, stack.pop(), 'what will be the first value popped off the stack?');
    equal(__, stack.pop(), 'what will be the second value popped off the stack?');
});

test("queue methods", function() {
    var queue = [];
    queue.push("first");
    queue.push("second");
    queue.unshift("third");

    equal(__, queue.shift(), 'what will be shifted out first?');
    equal(__, queue.shift(), 'what will be shifted out second?');
});
module("About Control Structures (topics/about_control_structures.js)");

test("if", function() {
	var isPositive = false;
	if (2 > 0) {
		isPositive = true;
	}
	equal(__, isPositive,  'what is the value of isPositive?');
});

test("for", function() {
	var counter = 10;
	for (var i = 1; i <= 3; i++) {
		counter = counter + i;
	}
	equal(__, counter, 'what is the value of counter?');
});

test("for in", function() {
	// this syntax will be explained in about objects
	var person = {
		name: "Amory Blaine",
		age: 102
	};
	var result = "";
	// for in enumerates the property names of an object
	for (var property_name in person) {
  		result = result + property_name;
	}
	equal(__, result, 'what is the value of result?');
});

test("ternary operator", function() {
	var fruit = true ? "apple" : "orange";
	equal(__, fruit, 'what is the value of fruit?');

	fruit = false ? "apple" : "orange";
	equal(__, fruit, 'now what is the value of fruit?');
});

test("switch", function() {
	var result = 0;
	switch (2) {
		case 1:
			result = 1;
			break;
		case 1+1:
			result = 2;
			break;
	}
	equal(__, result, 'what is the value of result?');
});

test("switch default case", function() {
    var result = "Pippin";
    switch ("m") {
        case "f":
            result = "Frodo";
            break;
        case "s":
            result = "Samwise";
                break;
        default:
            result = "Merry";
            break;
    }
    equal(__, result, 'what is the value of result?');
});

test("null coalescing", function() {
    var result = null || "a value";
    equal(__, result, 'what is the value of result?');
});
module("About Functions And Closure (topics/about_functions_and_closure.js)");

test("defining functions directly", function() {
    var result = "a";
    function changeResult() {
        // the ability to access a variables defined in the same scope as the function is known as 'closure'
        result = "b";
    };
    changeResult();
    equal(__, result, 'what is the value of result?');
});

test("assigning functions to variables", function() {
    var triple = function(input) {
        return input * 3;
    };
    equal(__, triple(4), 'what is triple 4?');
});

test("self invoking functions", function() {
    var publicValue = "shared";

    // self invoking functions are used to provide scoping and to alias variables
    (function(pv) {
        var secretValue = "password";
        equal(__, pv, 'what is the value of pv?');
        equal("__", typeof(secretValue), "is secretValue available in this context?");
        equal("__", typeof(publicValue), "is publicValue available in this context?");
    })(publicValue);

    equal("__", typeof(secretValue), "is secretValue available in this context?");
    equal("__", typeof(publicValue), "is publicValue available in this context?");
});

test("arguments array", function() {
    var add = function() {
        var total = 0;
        for(var i = 0; i < arguments.length; i++) {
            // complete the implementation of this method so that it returns the sum of its arguments
            // __
        }
        // __
    };

    equal(15, add(1,2,3,4,5), "add 1,2,3,4,5");
    equal(9, add(4,7,-2), "add 4,7,-2");
});

test("using call to invoke function",function(){
    var invokee = function( message ){
        return this + message;    
    };
    
    //another way to invoke a function is to use the call function which allows 
    //you to set the callers "this" context.  Call can take any number of arguments: 
    //the first one is always the context that this should be set to in the called
    //function, and the arguments to be sent to the function,multiple arguments are separated by commas.
    var result = invokee.call("I am this!", "Where did it come from?");
        
    equal(__, result, "what will the value of invokee's this be?");
});

test("using apply to invoke function",function(){
    var invokee = function( message1, message2 ){
        return this + message1 + message2;    
    };
    
    //similar to the call function is the apply function.  Apply only has two
    //arguments:  the first is the context that this should be set to in the called
    //function and the second is the array of arguments to be passed into the called function.
    var result = invokee.apply("I am this!", ["I am arg1","I am arg2"]);
        
    equal(__, result, "what will the value of invokee's this be?");
});


module("About Objects (topics/about_objects.js)");

test("object type", function() {
    var empty_object = {};
    equal(__, typeof(empty_object), 'what is the type of an object?');
});

test("object literal notation", function() {
    var person = {
        __:__,
        __:__
    };
    equal("Amory Blaine", person.name, "what is the person's name?");
    equal(102, person.age, "what is the person's age?");
});

test("dynamically adding properties", function() {
    var person = {};
    person.__ = "Amory Blaine";
    person.__ = 102;
    equal("Amory Blaine", person.name, "what is the person's name?");
    equal(102, person.age, "what is the person's age?");
}); 

test("adding properties from strings", function() {
    var person = {};
    person["__"] = "Amory Blaine";
    person["__"] = 102;
    equal("Amory Blaine", person.name, "what is the person's name?");
    equal(102, person.age, "what is the person's age?");
});

test("adding functions", function() {
    var person = {
        name: "Amory Blaine",
        age: 102,
        toString: function() {
            return __;  // HINT: use the 'this' keyword to refer to the person object.
        }
    };
    equal("I Amory Blaine am 102 years old.", person.toString(), "what should the toString function be?");
});

// demonstrate the effect of modifying an objects prototype before and after the object is constructed

module("About Prototypal Inheritance (topics/about_prototypal_inheritance.js)");

// this 'class' pattern defines a class by its constructor
var Mammal = function(name) {
    this.name = name;
}
// things that don't need to be set in the constructor should be added to the constructor's prototype property.
Mammal.prototype = {
    sayHi: function() {
        return "Hello, my name is " + this.name;
    }
}

test("defining a 'class'", function() {
    var eric  = new Mammal("Eric");
    equal(__, eric.sayHi(), 'what will Eric say?');
});

// add another function to the Mammal 'type' that uses the sayHi function
Mammal.prototype.favouriteSaying = function() {
    return this.name + "'s favourite saying is " + this.sayHi(); 
}

test("more functions", function() {
    var bobby = new Mammal("Bobby");
    equal(__, bobby.favouriteSaying(), "what is Bobby's favourite saying?"); 
});

test("calling functions added to a prototype after an object was created", function() {
    var paul = new Mammal("Paul");
    Mammal.prototype.numberOfLettersInName = function() {
        return this.name.length;
    };
    // the following statement asks the paul object to call a function that was added
    // to the Mammal prototype after paul was constructed.
    equal(__, paul.numberOfLettersInName(), "how long is Paul's name?");
});

// helper function for inheritance. 
// From https://developer.mozilla.org/en/JavaScript/Guide/Inheritance_Revisited
function extend(child, supertype){  
    child.prototype = supertype.prototype;  
} 

// "Subclass" Mammal
function Bat(name, wingspan) {
    Mammal.call(this, name);
    this.wingspan = wingspan;
}	

// configure inheritance
extend(Bat, Mammal);

test("Inheritance", function() {
    var lenny = new Bat("Lenny", "1.5m");
    equal(__, lenny.sayHi(), "what does Lenny say?");
    equal(__, lenny.wingspan, "what is Lenny's wingspan?");
});
// demonstrate objects prototype chain

// https://developer.mozilla.org/en/JavaScript/Guide/Inheritance_and_the_prototype_chain
module("About Prototype Chain (topics/about_prototype_chain.js)");

var father = {
  b: 3,
  c: 4
};

var child = Object.create(father);
child.a = 1;
child.b = 2;

/*
 * ---------------------- ---- ---- ----
 *                      [a]  [b]  [c]
 * ---------------------- ---- ---- ----
 * [child]               1    2
 * ---------------------- ---- ---- ----
 * [father]                   3    4
 * ---------------------- ---- ---- ----
 * [Object.prototype]
 * ---------------------- ---- ---- ----
 * [null]
 * ---------------------- ---- ---- ----
 * */

test("Is there an 'a' and 'b' own property on child?", function () {
  equal(__, child.hasOwnProperty('a'), 'child.hasOwnProperty(\'a\')?');
  equal(__, child.hasOwnProperty('b'), 'child.hasOwnProperty(\'b\')?');
});

test("Is there an 'a' and 'b' property on child?", function () {
  equal(__, child.a, 'what is \'a\' value?');
  equal(__, child.b, 'what is \'b\' value?');
});

test("If 'b' was removed, whats b value?", function () {
  delete child.b;
  equal(__, child.b, 'what is \'b\' value now?');
});


test("Is there a 'c' own property on child?", function () {
  equal(__, child.hasOwnProperty('c'), 'child.hasOwnProperty(\'c\')?');
});

// Is there a 'c' own property on child? No, check its prototype
// Is there a 'c' own property on child.[[Prototype]]? Yes, its value is...
test("Is there a 'c' property on child?", function () {
  equal(__, child.c, 'what is the value of child.c?');
});


// Is there a 'd' own property on child? No, check its prototype
// Is there a 'd' own property on child.[[Prototype]]? No, check it prototype
// child.[[Prototype]].[[Prototype]] is null, stop searching, no property found, return...
test("Is there an 'd' property on child?", function () {
  equal(__, child.d, 'what is the value of child.d?');
});


module("About Reflection (topics/about_reflection.js)");

function A() {
    this.aprop = "A";
};

function B() {
    this.bprop = "B";
};

B.prototype = new A();

test("typeof", function() {
    equal(__, typeof({}), 'what is the type of an empty object?');
    equal(__, typeof('apple'), 'what is the type of a string?');
    equal(__, typeof(-5), 'what is the type of -5?');
    equal(__, typeof(false), 'what is the type of false?');
});

test("property enumeration", function() {
    var keys = [];
    var values = [];
    var person = {name: 'Amory Blaine', age: 102, unemployed: true};
    for(var propertyName in person) {
        keys.push(propertyName);
        values.push(person[propertyName]);
    }
    ok(keys.equalTo(['__','__','__']), 'what are the property names of the object?');
    ok(values.equalTo(['__',__,__]), 'what are the property values of the object?');
});

test("hasOwnProperty", function() {
    var b = new B();
    var propertyName;

    var keys = [];
    for (propertyName in b) {
        keys.push(propertyName);
    }
    equal(__, keys.length, 'how many elements are in the keys array?');
    deepEqual([__, __], keys, 'what are the properties of the array?');

    // hasOwnProperty returns true if the parameter is a property directly on the object,
    // but not if it is a property accessible via the prototype chain.
    var ownKeys = [];
    for(propertyName in b) {
        if (b.hasOwnProperty(propertyName)) {
            ownKeys.push(propertyName);
        }
    }
    equal(__, ownKeys.length, 'how many elements are in the ownKeys array?');
    deepEqual([__], ownKeys, 'what are the own properties of the array?');
});

test("constructor property", function () {
    var a = new A();
    var b = new B();
    equal(__, typeof(a.constructor), "what is the type of a's constructor?");
    equal(__, a.constructor.name, "what is the name of a's constructor?");
    equal(__, b.constructor.name, "what is the name of b's constructor?");
});

test("eval", function() {
    // eval executes a string
    var result = "";
    eval("result = 'apple' + ' ' + 'pie'");
    equal(__, result, 'what is the value of result?');
});

module("About Regular Expressions (topics/about_regular_expressions.js)");

test("exec", function() {
    var numberFinder = /(\d).*(\d)/;
    var results = numberFinder.exec("what if 6 turned out to be 9?");
    ok(results.equalTo([__, __, __]), 'what is the value of results?');		
});

test("test", function() {
    var containsSelect = /select/.test("  select * from users ");
    equal(__, containsSelect, 'does the string provided contain "select"?');
});

test("match", function() {
    var matches = "what if 6 turned out to be 9?".match(/(\d)/g);
    ok(matches.equalTo([__, __]), 'what is the value of matches?');
});

test("replace", function() {
    var pie = "apple pie".replace("apple", "strawberry");
    equal(__, pie, 'what is the value of pie?');

    pie = "what if 6 turned out to be 9?".replace(/\d/g, function(number) { // the second parameter can be a string or a function
        var map = {'6': 'six','9': 'nine'};
        return map[number];
    });
    equal(__, pie, 'what is the value of pie?');
});

// THE END
module("About Scope (topics/about_scope.js)");

thisIsAGlobalVariable = 77;

test("global variables", function() {
    equal(__, thisIsAGlobalVariable, 'is thisIsAGlobalVariable defined in this scope?');
});

test("variables declared inside of a function", function() {
    var outerVariable = "outer";

    // this is a self-invoking function. Notice that it calls itself at the end ().
    (function() {
        var innerVariable = "inner";
        equal(__, outerVariable, 'is outerVariable defined in this scope?');
        equal(__, innerVariable, 'is innerVariable defined in this scope?');
    })();

    equal(__, outerVariable, 'is outerVariable defined in this scope?');
    equal(__, typeof(innerVariable), 'is innerVariable defined in this scope?');
});
module("About this (topics/about_this.js)");

test("'this' inside a method", function () {
	var person = {
		name: 'bob',
		intro: function () {
			return "Hello, my name is " + this.__;
		} 
	}
	equal(person.intro(), "Hello, my name is bob", "If an object has a method can you access properties inside it?");
});

test("'this' on unattached function", function () {
	var person = {
		globalName: 'bob',
		intro: function () {
			return "Hello, my name is " + this.globalName;
		} 
	}

	var alias = person.intro;
	
	// if the function is not called as an object property 'this' is the global context 
	// (window in a browser). This is an example. Please do not do this in practise.
	window.__ = 'Peter';
	equal(alias(), "Hello, my name is Peter", "What does 'this' refer to when it is not part of an object?");
});

test("'this' set explicitly", function () {
	var person = {
		name: 'bob',
		intro: function () {
			return "Hello, my name is " + this.name;
		} 
	}

	// calling a function with 'call' lets us assign 'this' explicitly
	var message = person.intro.call({__: "Frank"});
	equal(message, "Hello, my name is Frank", "What does 'this' refer to when you use the 'call()' method?");
});

// extra credit: underscore.js has a 'bind' function http://documentcloud.github.com/underscore/#bind
// read the source and see how it is implemented