Fixed previous() in docs

[jquery.git] / src / jquery / jquery.js

/*
 * jQuery @VERSION - New Wave Javascript
 *
 * Copyright (c) 2006 John Resig (jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * $Date$
 * $Rev$
 */

// Global undefined variable
window.undefined = window.undefined;

/**
 * Create a new jQuery Object
 *
 * @test ok( Array.prototype.push, "Array.push()" );
 * ok( Function.prototype.apply, "Function.apply()" );
 * ok( document.getElementById, "getElementById" );
 * ok( document.getElementsByTagName, "getElementsByTagName" );
 * ok( RegExp, "RegExp" );
 * ok( jQuery, "jQuery" );
 * ok( $, "$()" );
 *
 * @constructor
 * @private
 * @name jQuery
 * @cat Core
 */
var jQuery = function(a,c) {

        // Shortcut for document ready (because $(document).each() is silly)
        if ( a && typeof a == "function" && jQuery.fn.ready )
                return jQuery(document).ready(a);

        // Make sure that a selection was provided
        a = a || jQuery.context || document;

        // Watch for when a jQuery object is passed as the selector
        if ( a.jquery )
                return jQuery( jQuery.merge( a, [] ) );

        // Watch for when a jQuery object is passed at the context
        if ( c && c.jquery )
                return jQuery( c ).find(a);

        // If the context is global, return a new object
        if ( window == this )
                return new jQuery(a,c);

        // Handle HTML strings
        if ( a.constructor == String ) {
                var m = /^[^<]*(<.+>)[^>]*$/.exec(a);
                if ( m ) a = jQuery.clean( [ m[1] ] );
        }

        // Watch for when an array is passed in
        this.get( a.constructor == Array || a.length && !a.nodeType && a[0] != undefined && a[0].nodeType ?
                // Assume that it is an array of DOM Elements
                jQuery.merge( a, [] ) :

                // Find the matching elements and save them for later
                jQuery.find( a, c ) );

        // See if an extra function was provided
        var fn = arguments[ arguments.length - 1 ];

        // If so, execute it in context
        if ( fn && typeof fn == "function" )
                this.each(fn);

        return this;
};

// Map over the $ in case of overwrite
if ( typeof $ != "undefined" )
        jQuery._$ = $;

/**
 * This function accepts a string containing a CSS selector,
 * basic XPath, or raw HTML, which is then used to match a set of elements.
 * The HTML string is different from the traditional selectors in that
 * it creates the DOM elements representing that HTML string, on the fly,
 * to be (assumedly) inserted into the document later.
 *
 * The core functionality of jQuery centers around this function.
 * Everything in jQuery is based upon this, or uses this in some way.
 * The most basic use of this function is to pass in an expression
 * (usually consisting of CSS or XPath), which then finds all matching
 * elements and remembers them for later use.
 *
 * By default, $() looks for DOM elements within the context of the
 * current HTML document.
 *
 * @example $("div > p")
 * @desc This finds all p elements that are children of a div element.
 * @before <p>one</p> <div><p>two</p></div> <p>three</p>
 * @result [ <p>two</p> ]
 *
 * @example $("<div><p>Hello</p></div>").appendTo("#body")
 * @desc Creates a div element (and all of its contents) dynamically, 
 * and appends it to the element with the ID of body. Internally, an
 * element is created and it's innerHTML property set to the given markup.
 * It is therefore both quite flexible and limited. 
 *
 * @name $
 * @param String expr An expression to search with, or a string of HTML to create on the fly.
 * @cat Core
 * @type jQuery
 */

/**
 * This function accepts a string containing a CSS selector, or
 * basic XPath, which is then used to match a set of elements with the
 * context of the specified DOM element, or document
 *
 * @example $("div", xml.responseXML)
 * @desc This finds all div elements within the specified XML document.
 *
 * @name $
 * @param String expr An expression to search with.
 * @param Element context A DOM Element, or Document, representing the base context.
 * @cat Core
 * @type jQuery
 */

/**
 * Wrap jQuery functionality around a specific DOM Element.
 * This function also accepts XML Documents and Window objects
 * as valid arguments (even though they are not DOM Elements).
 *
 * @example $(document).find("div > p")
 * @before <p>one</p> <div><p>two</p></div> <p>three</p>
 * @result [ <p>two</p> ]
 *
 * @example $(document.body).background( "black" );
 * @desc Sets the background color of the page to black.
 *
 * @name $
 * @param Element elem A DOM element to be encapsulated by a jQuery object.
 * @cat Core
 * @type jQuery
 */

/**
 * Wrap jQuery functionality around a set of DOM Elements.
 *
 * @example $( myForm.elements ).hide()
 * @desc Hides all the input elements within a form
 *
 * @name $
 * @param Array<Element> elems An array of DOM elements to be encapsulated by a jQuery object.
 * @cat Core
 * @type jQuery
 */

/**
 * A shorthand for $(document).ready(), allowing you to bind a function
 * to be executed when the DOM document has finished loading. This function
 * behaves just like $(document).ready(), in that it should be used to wrap
 * all of the other $() operations on your page. While this function is,
 * technically, chainable - there really isn't much use for chaining against it.
 * You can have as many $(document).ready events on your page as you like.
 *
 * @example $(function(){
 *   // Document is ready
 * });
 * @desc Executes the function when the DOM is ready to be used.
 *
 * @name $
 * @param Function fn The function to execute when the DOM is ready.
 * @cat Core
 * @type jQuery
 */

/**
 * A means of creating a cloned copy of a jQuery object. This function
 * copies the set of matched elements from one jQuery object and creates
 * another, new, jQuery object containing the same elements.
 *
 * @example var div = $("div");
 * $( div ).find("p");
 * @desc Locates all p elements with all div elements, without disrupting the original jQuery object contained in 'div' (as would normally be the case if a simple div.find("p") was done).
 *
 * @name $
 * @param jQuery obj The jQuery object to be cloned.
 * @cat Core
 * @type jQuery
 */

// Map the jQuery namespace to the '$' one
var $ = jQuery;

jQuery.fn = jQuery.prototype = {
        /**
         * The current version of jQuery.
         *
         * @private
         * @property
         * @name jquery
         * @type String
         * @cat Core
         */
        jquery: "@VERSION",

        /**
         * The number of elements currently matched.
         *
         * @example $("img").length;
         * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
         * @result 2
         *
         * @test ok( $("div").length == 2, "Get Number of Elements Found" );
         *
         * @property
         * @name length
         * @type Number
         * @cat Core
         */

        /**
         * The number of elements currently matched.
         *
         * @example $("img").size();
         * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
         * @result 2
         *
         * @test ok( $("div").size() == 2, "Get Number of Elements Found" );
         *
         * @name size
         * @type Number
         * @cat Core
         */
        size: function() {
                return this.length;
        },

        /**
         * Access all matched elements. This serves as a backwards-compatible
         * way of accessing all matched elements (other than the jQuery object
         * itself, which is, in fact, an array of elements).
         *
         * @example $("img").get();
         * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
         * @result [ <img src="test1.jpg"/> <img src="test2.jpg"/> ]
         *
         * @test isSet( $("div").get(), q("main","foo"), "Get All Elements" );
         *
         * @name get
         * @type Array<Element>
         * @cat Core
         */

        /**
         * Access a single matched element. num is used to access the
         * Nth element matched.
         *
         * @example $("img").get(1);
         * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
         * @result [ <img src="test1.jpg"/> ]
         *
         * @test ok( $("div").get(0) == document.getElementById("main"), "Get A Single Element" );
         *
         * @name get
         * @type Element
         * @param Number num Access the element in the Nth position.
         * @cat Core
         */

        /**
         * Set the jQuery object to an array of elements.
         *
         * @example $("img").get([ document.body ]);
         * @result $("img").get() == [ document.body ]
         *
         * @private
         * @name get
         * @type jQuery
         * @param Elements elems An array of elements
         * @cat Core
         */
        get: function( num ) {
                // Watch for when an array (of elements) is passed in
                if ( num && num.constructor == Array ) {

                        // Use a tricky hack to make the jQuery object
                        // look and feel like an array
                        this.length = 0;
                        [].push.apply( this, num );

                        return this;
                } else
                        return num == undefined ?

                                // Return a 'clean' array
                                jQuery.merge( this, [] ) :

                                // Return just the object
                                this[num];
        },

        /**
         * Execute a function within the context of every matched element.
         * This means that every time the passed-in function is executed
         * (which is once for every element matched) the 'this' keyword
         * points to the specific element.
         *
         * Additionally, the function, when executed, is passed a single
         * argument representing the position of the element in the matched
         * set.
         *
         * @example $("img").each(function(){
         *   this.src = "test.jpg";
         * });
         * @before <img/> <img/>
         * @result <img src="test.jpg"/> <img src="test.jpg"/>
         *
         * @example $("img").each(function(i){
         *   alert( "Image #" + i + " is " + this );
         * });
         * @before <img/> <img/>
         * @result <img src="test.jpg"/> <img src="test.jpg"/>
         *
         * @test var div = $("div");
         * div.each(function(){this.foo = 'zoo';});
         * var pass = true;
         * for ( var i = 0; i < div.size(); i++ ) {
         *   if ( div.get(i).foo != "zoo" ) pass = false;
         * }
         * ok( pass, "Execute a function, Relative" );
         *
         * @name each
         * @type jQuery
         * @param Function fn A function to execute
         * @cat Core
         */
        each: function( fn, args ) {
                return jQuery.each( this, fn, args );
        },

        /**
         * Searches every matched element for the object and returns
         * the index of the element, if found, starting with zero. 
         * Returns -1 if the object wasn't found.
         *
         * @example $("*").index(document.getElementById('foobar')) 
         * @before <div id="foobar"></div><b></b><span id="foo"></span>
         * @result 0
         *
         * @example $("*").index(document.getElementById('foo')) 
         * @before <div id="foobar"></div><b></b><span id="foo"></span>
         * @result 2
         *
         * @example $("*").index(document.getElementById('bar')) 
         * @before <div id="foobar"></div><b></b><span id="foo"></span>
         * @result -1
         *
         * @test ok( $([window, document]).index(window) == 0, "Check for index of elements" );
         * ok( $([window, document]).index(document) == 1, "Check for index of elements" );
         * var inputElements = $('#radio1,#radio2,#check1,#check2');
         * ok( inputElements.index(document.getElementById('radio1')) == 0, "Check for index of elements" );
         * ok( inputElements.index(document.getElementById('radio2')) == 1, "Check for index of elements" );
         * ok( inputElements.index(document.getElementById('check1')) == 2, "Check for index of elements" );
         * ok( inputElements.index(document.getElementById('check2')) == 3, "Check for index of elements" );
         * ok( inputElements.index(window) == -1, "Check for not found index" );
         * ok( inputElements.index(document) == -1, "Check for not found index" );
         * 
         * @name index
         * @type Number
         * @param Object obj Object to search for
         * @cat Core
         */
        index: function( obj ) {
                var pos = -1;
                this.each(function(i){
                        if ( this == obj ) pos = i;
                });
                return pos;
        },

        /**
         * Access a property on the first matched element.
         * This method makes it easy to retrieve a property value
         * from the first matched element.
         *
         * @example $("img").attr("src");
         * @before <img src="test.jpg"/>
         * @result test.jpg
         *
         * @test ok( $('#text1').attr('value') == "Test", 'Check for value attribute' );
         * ok( $('#text1').attr('type') == "text", 'Check for type attribute' );
         * ok( $('#radio1').attr('type') == "radio", 'Check for type attribute' );
         * ok( $('#check1').attr('type') == "checkbox", 'Check for type attribute' );
         * ok( $('#simon1').attr('rel') == "bookmark", 'Check for rel attribute' );
         * ok( $('#google').attr('title') == "Google!", 'Check for title attribute' );
         * ok( $('#mark').attr('hreflang') == "en", 'Check for hreflang attribute' );
         * ok( $('#en').attr('lang') == "en", 'Check for lang attribute' );
         * ok( $('#simon').attr('class') == "blog link", 'Check for class attribute' );
         * ok( $('#name').attr('name') == "name", 'Check for name attribute' );
         * ok( $('#text1').attr('name') == "action", 'Check for name attribute' );
         * ok( $('#form').attr('action').indexOf("formaction") >= 0, 'Check for action attribute' );
         *
         * @name attr
         * @type Object
         * @param String name The name of the property to access.
         * @cat DOM
         */

        /**
         * Set a hash of key/value object properties to all matched elements.
         * This serves as the best way to set a large number of properties
         * on all matched elements.
         *
         * @example $("img").attr({ src: "test.jpg", alt: "Test Image" });
         * @before <img/>
         * @result <img src="test.jpg" alt="Test Image"/>
         *
         * @test var pass = true;
         * $("div").attr({foo: 'baz', zoo: 'ping'}).each(function(){
         *   if ( this.getAttribute('foo') != "baz" && this.getAttribute('zoo') != "ping" ) pass = false;
         * });
         * ok( pass, "Set Multiple Attributes" );
         *
         * @name attr
         * @type jQuery
         * @param Hash prop A set of key/value pairs to set as object properties.
         * @cat DOM
         */

        /**
         * Set a single property to a value, on all matched elements.
         *
         * @example $("img").attr("src","test.jpg");
         * @before <img/>
         * @result <img src="test.jpg"/>
         *
         * @test var div = $("div");
         * div.attr("foo", "bar");
         * var pass = true;
         * for ( var i = 0; i < div.size(); i++ ) {
         *   if ( div.get(i).getAttribute('foo') != "bar" ) pass = false;
         * }
         * ok( pass, "Set Attribute" );
         *
         * $("#name").attr('name', 'something');
         * ok( $("#name").name() == 'something', 'Set name attribute' );
         * $("#check2").attr('checked', true);
         * ok( document.getElementById('check2').checked == true, 'Set checked attribute' );
         * $("#check2").attr('checked', false);
         * ok( document.getElementById('check2').checked == false, 'Set checked attribute' );
         * $("#text1").attr('readonly', true);
         * ok( document.getElementById('text1').readOnly == true, 'Set readonly attribute' );
         * $("#text1").attr('readonly', false);
         * ok( document.getElementById('text1').readOnly == false, 'Set readonly attribute' );
         *
         * @test stop();
         * $.get('data/dashboard.xml', function(xml) { 
         *   var titles = [];
         *   $('tab', xml).each(function() {
         *     titles.push($(this).attr('title'));
         *   });
         *   ok( titles[0] == 'Location', 'attr() in XML context: Check first title' );
         *   ok( titles[1] == 'Users', 'attr() in XML context: Check second title' );
         *   start();
         * });
         *
         * @name attr
         * @type jQuery
         * @param String key The name of the property to set.
         * @param Object value The value to set the property to.
         * @cat DOM
         */
        attr: function( key, value, type ) {
                // Check to see if we're setting style values
                return key.constructor != String || value != undefined ?
                        this.each(function(){
                                // See if we're setting a hash of styles
                                if ( value == undefined )
                                        // Set all the styles
                                        for ( var prop in key )
                                                jQuery.attr(
                                                        type ? this.style : this,
                                                        prop, key[prop]
                                                );

                                // See if we're setting a single key/value style
                                else
                                        jQuery.attr(
                                                type ? this.style : this,
                                                key, value
                                        );
                        }) :

                        // Look for the case where we're accessing a style value
                        jQuery[ type || "attr" ]( this[0], key );
        },

        /**
         * Access a style property on the first matched element.
         * This method makes it easy to retrieve a style property value
         * from the first matched element.
         *
         * @example $("p").css("color");
         * @before <p style="color:red;">Test Paragraph.</p>
         * @result red
         * @desc Retrieves the color style of the first paragraph
         *
         * @example $("p").css("fontWeight");
         * @before <p style="font-weight: bold;">Test Paragraph.</p>
         * @result bold
         * @desc Retrieves the font-weight style of the first paragraph.
         * Note that for all style properties with a dash (like 'font-weight'), you have to
         * write it in camelCase. In other words: Every time you have a '-' in a 
         * property, remove it and replace the next character with an uppercase 
         * representation of itself. Eg. fontWeight, fontSize, fontFamily, borderWidth,
         * borderStyle, borderBottomWidth etc.
         *
         * @test ok( $('#main').css("display") == 'none', 'Check for css property "display"');
         *
         * @name css
         * @type Object
         * @param String name The name of the property to access.
         * @cat CSS
         */

        /**
         * Set a hash of key/value style properties to all matched elements.
         * This serves as the best way to set a large number of style properties
         * on all matched elements.
         *
         * @example $("p").css({ color: "red", background: "blue" });
         * @before <p>Test Paragraph.</p>
         * @result <p style="color:red; background:blue;">Test Paragraph.</p>
         *
         * @test ok( $('#foo').is(':visible'), 'Modifying CSS display: Assert element is visible');
         * $('#foo').css({display: 'none'});
         * ok( !$('#foo').is(':visible'), 'Modified CSS display: Assert element is hidden');
         * $('#foo').css({display: 'block'});
         * ok( $('#foo').is(':visible'), 'Modified CSS display: Assert element is visible');
         * $('#floatTest').css({styleFloat: 'right'});
         * ok( $('#floatTest').css('styleFloat') == 'right', 'Modified CSS float using "styleFloat": Assert float is right');
         * $('#floatTest').css({cssFloat: 'left'});
         * ok( $('#floatTest').css('cssFloat') == 'left', 'Modified CSS float using "cssFloat": Assert float is left');
         * $('#floatTest').css({'float': 'right'});
         * ok( $('#floatTest').css('float') == 'right', 'Modified CSS float using "float": Assert float is right');
         * $('#floatTest').css({'font-size': '30px'});
         * ok( $('#floatTest').css('font-size') == '30px', 'Modified CSS font-size: Assert font-size is 30px');
         * 
         * @name css
         * @type jQuery
         * @param Hash prop A set of key/value pairs to set as style properties.
         * @cat CSS
         */

        /**
         * Set a single style property to a value, on all matched elements.
         *
         * @example $("p").css("color","red");
         * @before <p>Test Paragraph.</p>
         * @result <p style="color:red;">Test Paragraph.</p>
         * @desc Changes the color of all paragraphs to red
         *
         *
         * @test ok( $('#foo').is(':visible'), 'Modifying CSS display: Assert element is visible');
         * $('#foo').css('display', 'none');
         * ok( !$('#foo').is(':visible'), 'Modified CSS display: Assert element is hidden');
         * $('#foo').css('display', 'block');
         * ok( $('#foo').is(':visible'), 'Modified CSS display: Assert element is visible');
         * $('#floatTest').css('styleFloat', 'left');
         * ok( $('#floatTest').css('styleFloat') == 'left', 'Modified CSS float using "styleFloat": Assert float is left');
         * $('#floatTest').css('cssFloat', 'right');
         * ok( $('#floatTest').css('cssFloat') == 'right', 'Modified CSS float using "cssFloat": Assert float is right');
         * $('#floatTest').css('float', 'left');
         * ok( $('#floatTest').css('float') == 'left', 'Modified CSS float using "float": Assert float is left');
         * $('#floatTest').css('font-size', '20px');
         * ok( $('#floatTest').css('font-size') == '20px', 'Modified CSS font-size: Assert font-size is 20px');
         *
         * @name css
         * @type jQuery
         * @param String key The name of the property to set.
         * @param Object value The value to set the property to.
         * @cat CSS
         */
        css: function( key, value ) {
                return this.attr( key, value, "curCSS" );
        },

        /**
         * Retrieve the text contents of all matched elements. The result is
         * a string that contains the combined text contents of all matched
         * elements. This method works on both HTML and XML documents.
         *
         * @example $("p").text();
         * @before <p>Test Paragraph.</p>
         * @result Test Paragraph.
         *
         * @test var expected = "This link has class=\"blog\": Simon Willison's Weblog";
         * ok( $('#sap').text() == expected, 'Check for merged text of more then one element.' );
         *
         * @name text
         * @type String
         * @cat DOM
         */
        text: function(e) {
                e = e || this;
                var t = "";
                for ( var j = 0; j < e.length; j++ ) {
                        var r = e[j].childNodes;
                        for ( var i = 0; i < r.length; i++ )
                                if ( r[i].nodeType != 8 )
                                        t += r[i].nodeType != 1 ?
                                                r[i].nodeValue : jQuery.fn.text([ r[i] ]);
                }
                return t;
        },

        /**
         * Wrap all matched elements with a structure of other elements.
         * This wrapping process is most useful for injecting additional
         * stucture into a document, without ruining the original semantic
         * qualities of a document.
         *
         * This works by going through the first element
         * provided (which is generated, on the fly, from the provided HTML)
         * and finds the deepest ancestor element within its
         * structure - it is that element that will en-wrap everything else.
         *
         * This does not work with elements that contain text. Any necessary text
         * must be added after the wrapping is done.
         *
         * @example $("p").wrap("<div class='wrap'></div>");
         * @before <p>Test Paragraph.</p>
         * @result <div class='wrap'><p>Test Paragraph.</p></div>
         * 
         * @test var defaultText = 'Try them out:'
         * var result = $('#first').wrap('<div class="red"><span></span></div>').text();
         * ok( defaultText == result, 'Check for wrapping of on-the-fly html' );
         * ok( $('#first').parent().parent().is('.red'), 'Check if wrapper has class "red"' );
         *
         * @name wrap
         * @type jQuery
         * @param String html A string of HTML, that will be created on the fly and wrapped around the target.
         * @cat DOM/Manipulation
         */

        /**
         * Wrap all matched elements with a structure of other elements.
         * This wrapping process is most useful for injecting additional
         * stucture into a document, without ruining the original semantic
         * qualities of a document.
         *
         * This works by going through the first element
         * provided and finding the deepest ancestor element within its
         * structure - it is that element that will en-wrap everything else.
         *
         * This does not work with elements that contain text. Any necessary text
         * must be added after the wrapping is done.
         *
         * @example $("p").wrap( document.getElementById('content') );
         * @before <p>Test Paragraph.</p><div id="content"></div>
         * @result <div id="content"><p>Test Paragraph.</p></div>
         *
         * @test var defaultText = 'Try them out:'
         * var result = $('#first').wrap(document.getElementById('empty')).parent();
         * ok( result.is('ol'), 'Check for element wrapping' );
         * ok( result.text() == defaultText, 'Check for element wrapping' );
         *
         * @name wrap
         * @type jQuery
         * @param Element elem A DOM element that will be wrapped.
         * @cat DOM/Manipulation
         */
        wrap: function() {
                // The elements to wrap the target around
                var a = jQuery.clean(arguments);

                // Wrap each of the matched elements individually
                return this.each(function(){
                        // Clone the structure that we're using to wrap
                        var b = a[0].cloneNode(true);

                        // Insert it before the element to be wrapped
                        this.parentNode.insertBefore( b, this );

                        // Find the deepest point in the wrap structure
                        while ( b.firstChild )
                                b = b.firstChild;

                        // Move the matched element to within the wrap structure
                        b.appendChild( this );
                });
        },

        /**
         * Append any number of elements to the inside of every matched elements,
         * generated from the provided HTML.
         * This operation is similar to doing an appendChild to all the
         * specified elements, adding them into the document.
         *
         * @example $("p").append("<b>Hello</b>");
         * @before <p>I would like to say: </p>
         * @result <p>I would like to say: <b>Hello</b></p>
         *
         * @test var defaultText = 'Try them out:'
         * var result = $('#first').append('<b>buga</b>');
         * ok( result.text() == defaultText + 'buga', 'Check if text appending works' );
         * ok( $('#select3').append('<option value="appendTest">Append Test</option>').find('option:last-child').attr('value') == 'appendTest', 'Appending html options to select element');
         *
         * @name append
         * @type jQuery
         * @param String html A string of HTML, that will be created on the fly and appended to the target.
         * @cat DOM/Manipulation
         */

        /**
         * Append an element to the inside of all matched elements.
         * This operation is similar to doing an appendChild to all the
         * specified elements, adding them into the document.
         *
         * @example $("p").append( $("#foo")[0] );
         * @before <p>I would like to say: </p><b id="foo">Hello</b>
         * @result <p>I would like to say: <b id="foo">Hello</b></p>
         *
         * @test var expected = "This link has class=\"blog\": Simon Willison's WeblogTry them out:";
         * $('#sap').append(document.getElementById('first'));
         * ok( expected == $('#sap').text(), "Check for appending of element" );
         *
         * @name append
         * @type jQuery
         * @param Element elem A DOM element that will be appended.
         * @cat DOM/Manipulation
         */

        /**
         * Append any number of elements to the inside of all matched elements.
         * This operation is similar to doing an appendChild to all the
         * specified elements, adding them into the document.
         *
         * @example $("p").append( $("b") );
         * @before <p>I would like to say: </p><b>Hello</b>
         * @result <p>I would like to say: <b>Hello</b></p>
         *
         * @test var expected = "This link has class=\"blog\": Simon Willison's WeblogTry them out:Yahoo";
         * $('#sap').append([document.getElementById('first'), document.getElementById('yahoo')]);
         * ok( expected == $('#sap').text(), "Check for appending of array of elements" );
         *
         * @name append
         * @type jQuery
         * @param Array<Element> elems An array of elements, all of which will be appended.
         * @cat DOM/Manipulation
         */
        append: function() {
                return this.domManip(arguments, true, 1, function(a){
                        this.appendChild( a );
                });
        },

        /**
         * Prepend any number of elements to the inside of every matched elements,
         * generated from the provided HTML.
         * This operation is the best way to insert dynamically created elements
         * inside, at the beginning, of all the matched element.
         *
         * @example $("p").prepend("<b>Hello</b>");
         * @before <p>I would like to say: </p>
         * @result <p><b>Hello</b>I would like to say: </p>
         *
         * @test var defaultText = 'Try them out:'
         * var result = $('#first').prepend('<b>buga</b>');
         * ok( result.text() == 'buga' + defaultText, 'Check if text prepending works' );
         * ok( $('#select3').prepend('<option value="prependTest">Prepend Test</option>').find('option:first-child').attr('value') == 'prependTest', 'Prepending html options to select element');
         *
         * @name prepend
         * @type jQuery
         * @param String html A string of HTML, that will be created on the fly and appended to the target.
         * @cat DOM/Manipulation
         */

        /**
         * Prepend an element to the inside of all matched elements.
         * This operation is the best way to insert an element inside, at the
         * beginning, of all the matched element.
         *
         * @example $("p").prepend( $("#foo")[0] );
         * @before <p>I would like to say: </p><b id="foo">Hello</b>
         * @result <p><b id="foo">Hello</b>I would like to say: </p>
         *       
         * @test var expected = "Try them out:This link has class=\"blog\": Simon Willison's Weblog";
         * $('#sap').prepend(document.getElementById('first'));
         * ok( expected == $('#sap').text(), "Check for prepending of element" );
         *
         * @name prepend
         * @type jQuery
         * @param Element elem A DOM element that will be appended.
         * @cat DOM/Manipulation
         */

        /**
         * Prepend any number of elements to the inside of all matched elements.
         * This operation is the best way to insert a set of elements inside, at the
         * beginning, of all the matched element.
         *
         * @example $("p").prepend( $("b") );
         * @before <p>I would like to say: </p><b>Hello</b>
         * @result <p><b>Hello</b>I would like to say: </p>
         *
         * @test var expected = "Try them out:YahooThis link has class=\"blog\": Simon Willison's Weblog";
         * $('#sap').prepend([document.getElementById('first'), document.getElementById('yahoo')]);
         * ok( expected == $('#sap').text(), "Check for prepending of array of elements" );
         *
         * @name prepend
         * @type jQuery
         * @param Array<Element> elems An array of elements, all of which will be appended.
         * @cat DOM/Manipulation
         */
        prepend: function() {
                return this.domManip(arguments, true, -1, function(a){
                        this.insertBefore( a, this.firstChild );
                });
        },

        /**
         * Insert any number of dynamically generated elements before each of the
         * matched elements.
         *
         * @example $("p").before("<b>Hello</b>");
         * @before <p>I would like to say: </p>
         * @result <b>Hello</b><p>I would like to say: </p>
         *
         * @test var expected = 'This is a normal link: bugaYahoo';
         * $('#yahoo').before('<b>buga</b>');
         * ok( expected == $('#en').text(), 'Insert String before' );
         *
         * @name before
         * @type jQuery
         * @param String html A string of HTML, that will be created on the fly and appended to the target.
         * @cat DOM/Manipulation
         */

        /**
         * Insert an element before each of the matched elements.
         *
         * @example $("p").before( $("#foo")[0] );
         * @before <p>I would like to say: </p><b id="foo">Hello</b>
         * @result <b id="foo">Hello</b><p>I would like to say: </p>
         *
         * @test var expected = "This is a normal link: Try them out:Yahoo";
         * $('#yahoo').before(document.getElementById('first'));
         * ok( expected == $('#en').text(), "Insert element before" );
         *
         * @name before
         * @type jQuery
         * @param Element elem A DOM element that will be appended.
         * @cat DOM/Manipulation
         */

        /**
         * Insert any number of elements before each of the matched elements.
         *
         * @example $("p").before( $("b") );
         * @before <p>I would like to say: </p><b>Hello</b>
         * @result <b>Hello</b><p>I would like to say: </p>
         *
         * @test var expected = "This is a normal link: Try them out:diveintomarkYahoo";
         * $('#yahoo').before([document.getElementById('first'), document.getElementById('mark')]);
         * ok( expected == $('#en').text(), "Insert array of elements before" );
         *
         * @name before
         * @type jQuery
         * @param Array<Element> elems An array of elements, all of which will be appended.
         * @cat DOM/Manipulation
         */
        before: function() {
                return this.domManip(arguments, false, 1, function(a){
                        this.parentNode.insertBefore( a, this );
                });
        },

        /**
         * Insert any number of dynamically generated elements after each of the
         * matched elements.
         *
         * @example $("p").after("<b>Hello</b>");
         * @before <p>I would like to say: </p>
         * @result <p>I would like to say: </p><b>Hello</b>
         *
         * @test var expected = 'This is a normal link: Yahoobuga';
         * $('#yahoo').after('<b>buga</b>');
         * ok( expected == $('#en').text(), 'Insert String after' );
         *
         * @name after
         * @type jQuery
         * @param String html A string of HTML, that will be created on the fly and appended to the target.
         * @cat DOM/Manipulation
         */

        /**
         * Insert an element after each of the matched elements.
         *
         * @example $("p").after( $("#foo")[0] );
         * @before <b id="foo">Hello</b><p>I would like to say: </p>
         * @result <p>I would like to say: </p><b id="foo">Hello</b>
         *
         * @test var expected = "This is a normal link: YahooTry them out:";
         * $('#yahoo').after(document.getElementById('first'));
         * ok( expected == $('#en').text(), "Insert element after" );
         *
         * @name after
         * @type jQuery
         * @param Element elem A DOM element that will be appended.
         * @cat DOM/Manipulation
         */

        /**
         * Insert any number of elements after each of the matched elements.
         *
         * @example $("p").after( $("b") );
         * @before <b>Hello</b><p>I would like to say: </p>
         * @result <p>I would like to say: </p><b>Hello</b>
         *
         * @test var expected = "This is a normal link: YahooTry them out:diveintomark";
         * $('#yahoo').after([document.getElementById('first'), document.getElementById('mark')]);
         * ok( expected == $('#en').text(), "Insert array of elements after" );
         *
         * @name after
         * @type jQuery
         * @param Array<Element> elems An array of elements, all of which will be appended.
         * @cat DOM/Manipulation
         */
        after: function() {
                return this.domManip(arguments, false, -1, function(a){
                        this.parentNode.insertBefore( a, this.nextSibling );
                });
        },

        /**
         * End the most recent 'destructive' operation, reverting the list of matched elements
         * back to its previous state. After an end operation, the list of matched elements will
         * revert to the last state of matched elements.
         *
         * @example $("p").find("span").end();
         * @before <p><span>Hello</span>, how are you?</p>
         * @result $("p").find("span").end() == [ <p>...</p> ]
         *
         * @test ok( 'Yahoo' == $('#yahoo').parent().end().text(), 'Check for end' );
         *
         * @name end
         * @type jQuery
         * @cat DOM/Traversing
         */
        end: function() {
                return this.get( this.stack.pop() );
        },

        /**
         * Searches for all elements that match the specified expression.
         * This method is the optimal way of finding additional descendant
         * elements with which to process.
         *
         * All searching is done using a jQuery expression. The expression can be
         * written using CSS 1-3 Selector syntax, or basic XPath.
         *
         * @example $("p").find("span");
         * @before <p><span>Hello</span>, how are you?</p>
         * @result $("p").find("span") == [ <span>Hello</span> ]
         *
         * @test ok( 'Yahoo' == $('#foo').find('.blogTest').text(), 'Check for find' );
         *
         * @name find
         * @type jQuery
         * @param String expr An expression to search with.
         * @cat DOM/Traversing
         */
        find: function(t) {
                return this.pushStack( jQuery.map( this, function(a){
                        return jQuery.find(t,a);
                }), arguments );
        },

        /**
         * Create cloned copies of all matched DOM Elements. This does
         * not create a cloned copy of this particular jQuery object,
         * instead it creates duplicate copies of all DOM Elements.
         * This is useful for moving copies of the elements to another
         * location in the DOM.
         *
         * @example $("b").clone().prependTo("p");
         * @before <b>Hello</b><p>, how are you?</p>
         * @result <b>Hello</b><p><b>Hello</b>, how are you?</p>
         *
         * @test ok( 'This is a normal link: Yahoo' == $('#en').text(), 'Assert text for #en' );
         * var clone = $('#yahoo').clone();
         * ok( 'Try them out:Yahoo' == $('#first').append(clone).text(), 'Check for clone' );
         * ok( 'This is a normal link: Yahoo' == $('#en').text(), 'Reassert text for #en' );
         *
         * @name clone
         * @type jQuery
         * @cat DOM/Manipulation
         */
        clone: function(deep) {
                return this.pushStack( jQuery.map( this, function(a){
                        return a.cloneNode( deep != undefined ? deep : true );
                }), arguments );
        },

        /**
         * Removes all elements from the set of matched elements that do not
         * match the specified expression. This method is used to narrow down
         * the results of a search.
         *
         * All searching is done using a jQuery expression. The expression
         * can be written using CSS 1-3 Selector syntax, or basic XPath.
         *
         * @example $("p").filter(".selected")
         * @before <p class="selected">Hello</p><p>How are you?</p>
         * @result $("p").filter(".selected") == [ <p class="selected">Hello</p> ]
         *
         * @test isSet( $("input").filter(":checked").get(), q("radio2", "check1"), "Filter elements" );
         * @test $("input").filter(":checked",function(i){ 
         *   ok( this == q("radio2", "check1")[i], "Filter elements, context" );
         * });
         * @test $("#main > p#ap > a").filter("#foobar",function(){},function(i){
         *   ok( this == q("google","groups", "mark")[i], "Filter elements, else context" );
         * });
         *
         * @name filter
         * @type jQuery
         * @param String expr An expression to search with.
         * @cat DOM/Traversing
         */

        /**
         * Removes all elements from the set of matched elements that do not
         * match at least one of the expressions passed to the function. This
         * method is used when you want to filter the set of matched elements
         * through more than one expression.
         *
         * Elements will be retained in the jQuery object if they match at
         * least one of the expressions passed.
         *
         * @example $("p").filter([".selected", ":first"])
         * @before <p>Hello</p><p>Hello Again</p><p class="selected">And Again</p>
         * @result $("p").filter([".selected", ":first"]) == [ <p>Hello</p>, <p class="selected">And Again</p> ]
         *
         * @name filter
         * @type jQuery
         * @param Array<String> exprs A set of expressions to evaluate against
         * @cat DOM/Traversing
         */
        filter: function(t) {
                return this.pushStack(
                        t.constructor == Array &&
                        jQuery.map(this,function(a){
                                for ( var i = 0; i < t.length; i++ )
                                        if ( jQuery.filter(t[i],[a]).r.length )
                                                return a;
                                return false;
                        }) ||

                        t.constructor == Boolean &&
                        ( t ? this.get() : [] ) ||

                        typeof t == "function" &&
                        jQuery.grep( this, t ) ||

                        jQuery.filter(t,this).r, arguments );
        },

        /**
         * Removes the specified Element from the set of matched elements. This
         * method is used to remove a single Element from a jQuery object.
         *
         * @example $("p").not( document.getElementById("selected") )
         * @before <p>Hello</p><p id="selected">Hello Again</p>
         * @result [ <p>Hello</p> ]
         *
         * @name not
         * @type jQuery
         * @param Element el An element to remove from the set
         * @cat DOM/Traversing
         */

        /**
         * Removes elements matching the specified expression from the set
         * of matched elements. This method is used to remove one or more
         * elements from a jQuery object.
         *
         * @example $("p").not("#selected")
         * @before <p>Hello</p><p id="selected">Hello Again</p>
         * @result [ <p>Hello</p> ]
         *
         * @test ok($("#main > p#ap > a").not("#google").length == 2, ".not")
         *
         * @name not
         * @type jQuery
         * @param String expr An expression with which to remove matching elements
         * @cat DOM/Traversing
         */
        not: function(t) {
                return this.pushStack( t.constructor == String ?
                        jQuery.filter(t,this,false).r :
                        jQuery.grep(this,function(a){ return a != t; }), arguments );
        },

        /**
         * Adds the elements matched by the expression to the jQuery object. This
         * can be used to concatenate the result sets of two expressions.
         *
         * @example $("p").add("span")
         * @before <p>Hello</p><p><span>Hello Again</span></p>
         * @result [ <p>Hello</p>, <span>Hello Again</span> ]
         *
         * @name add
         * @type jQuery
         * @param String expr An expression whose matched elements are added
         * @cat DOM/Traversing
         */

        /**
         * Adds each of the Elements in the array to the set of matched elements.
         * This is used to add a set of Elements to a jQuery object.
         *
         * @example $("p").add([document.getElementById("a"), document.getElementById("b")])
         * @before <p>Hello</p><p><span id="a">Hello Again</span><span id="b">And Again</span></p>
         * @result [ <p>Hello</p>, <span id="a">Hello Again</span>, <span id="b">And Again</span> ]
         *
         * @name add
         * @type jQuery
         * @param Array<Element> els An array of Elements to add
         * @cat DOM/Traversing
         */

        /**
         * Adds a single Element to the set of matched elements. This is used to
         * add a single Element to a jQuery object.
         *
         * @example $("p").add( document.getElementById("a") )
         * @before <p>Hello</p><p><span id="a">Hello Again</span></p>
         * @result [ <p>Hello</p>, <span id="a">Hello Again</span> ]
         *
         * @name add
         * @type jQuery
         * @param Element el An Element to add
         * @cat DOM/Traversing
         */
        add: function(t) {
                return this.pushStack( jQuery.merge( this, t.constructor == String ?
                        jQuery.find(t) : t.constructor == Array ? t : [t] ), arguments );
        },

        /**
         * Checks the current selection against an expression and returns true,
         * if the selection fits the given expression. Does return false, if the
         * selection does not fit or the expression is not valid.
         *
         * @example $("input[@type='checkbox']").parent().is("form")
         * @before <form><input type="checkbox" /></form>
         * @result true
         * @desc Returns true, because the parent of the input is a form element
         * 
         * @example $("input[@type='checkbox']").parent().is("form")
         * @before <form><p><input type="checkbox" /></p></form>
         * @result false
         * @desc Returns false, because the parent of the input is a p element
         *
         * @example $("form").is(null)
         * @before <form></form>
         * @result false
         * @desc An invalid expression always returns false.
         *
         * @test ok( $('#form').is('form'), 'Check for element: A form must be a form' );
         * ok( !$('#form').is('div'), 'Check for element: A form is not a div' );
         * ok( $('#mark').is('.blog'), 'Check for class: Expected class "blog"' );
         * ok( !$('#mark').is('.link'), 'Check for class: Did not expect class "link"' );
         * ok( $('#simon').is('.blog.link'), 'Check for multiple classes: Expected classes "blog" and "link"' );
         * ok( !$('#simon').is('.blogTest'), 'Check for multiple classes: Expected classes "blog" and "link", but not "blogTest"' );
         * ok( $('#en').is('[@lang="en"]'), 'Check for attribute: Expected attribute lang to be "en"' );
         * ok( !$('#en').is('[@lang="de"]'), 'Check for attribute: Expected attribute lang to be "en", not "de"' );
         * ok( $('#text1').is('[@type="text"]'), 'Check for attribute: Expected attribute type to be "text"' );
         * ok( !$('#text1').is('[@type="radio"]'), 'Check for attribute: Expected attribute type to be "text", not "radio"' );
         * ok( $('#text2').is(':disabled'), 'Check for pseudoclass: Expected to be disabled' );
         * ok( !$('#text1').is(':disabled'), 'Check for pseudoclass: Expected not disabled' );
         * ok( $('#radio2').is(':checked'), 'Check for pseudoclass: Expected to be checked' );
         * ok( !$('#radio1').is(':checked'), 'Check for pseudoclass: Expected not checked' );
         * ok( $('#foo').is('[p]'), 'Check for child: Expected a child "p" element' );
         * ok( !$('#foo').is('[ul]'), 'Check for child: Did not expect "ul" element' );
         * ok( $('#foo').is('[p][a][code]'), 'Check for childs: Expected "p", "a" and "code" child elements' );
         * ok( !$('#foo').is('[p][a][code][ol]'), 'Check for childs: Expected "p", "a" and "code" child elements, but no "ol"' );
         * ok( !$('#foo').is(0), 'Expected false for an invalid expression - 0' );
         * ok( !$('#foo').is(null), 'Expected false for an invalid expression - null' );
         * ok( !$('#foo').is(''), 'Expected false for an invalid expression - ""' );
         * ok( !$('#foo').is(undefined), 'Expected false for an invalid expression - undefined' );
         *
         * @name is
         * @type Boolean
         * @param String expr The expression with which to filter
         * @cat DOM/Traversing
         */
        is: function(expr) {
                return expr ? jQuery.filter(expr,this).r.length > 0 : false;
        },
        
        /**
         *
         *
         * @private
         * @name domManip
         * @param Array args
         * @param Boolean table
         * @param Number int
         * @param Function fn The function doing the DOM manipulation.
         * @type jQuery
         * @cat Core
         */
        domManip: function(args, table, dir, fn){
                var clone = this.size() > 1;
                var a = jQuery.clean(args);

                return this.each(function(){
                        var obj = this;

                        if ( table && this.nodeName.toUpperCase() == "TABLE" && a[0].nodeName.toUpperCase() != "THEAD" ) {
                                var tbody = this.getElementsByTagName("tbody");

                                if ( !tbody.length ) {
                                        obj = document.createElement("tbody");
                                        this.appendChild( obj );
                                } else
                                        obj = tbody[0];
                        }

                        for ( var i = ( dir < 0 ? a.length - 1 : 0 );
                                i != ( dir < 0 ? dir : a.length ); i += dir ) {
                                        fn.apply( obj, [ clone ? a[i].cloneNode(true) : a[i] ] );
                        }
                });
        },

        /**
         *
         *
         * @private
         * @name pushStack
         * @param Array a
         * @param Array args
         * @type jQuery
         * @cat Core
         */
        pushStack: function(a,args) {
                var fn = args && args[args.length-1];
                var fn2 = args && args[args.length-2];
                
                if ( fn && fn.constructor != Function ) fn = null;
                if ( fn2 && fn2.constructor != Function ) fn2 = null;

                if ( !fn ) {
                        if ( !this.stack ) this.stack = [];
                        this.stack.push( this.get() );
                        this.get( a );
                } else {
                        var old = this.get();
                        this.get( a );

                        if ( fn2 && a.length || !fn2 )
                                this.each( fn2 || fn ).get( old );
                        else
                                this.get( old ).each( fn );
                }

                return this;
        }
};

/**
 * Extends the jQuery object itself. Can be used to add both static
 * functions and plugin methods.
 * 
 * @example $.fn.extend({
 *   check: function() {
 *     this.each(function() { this.checked = true; });
 *   ),
 *   uncheck: function() {
 *     this.each(function() { this.checked = false; });
 *   }
 * });
 * $("input[@type=checkbox]").check();
 * $("input[@type=radio]").uncheck();
 * @desc Adds two plugin methods.
 *
 * @private
 * @name extend
 * @param Object obj
 * @type Object
 * @cat Core
 */

/**
 * Extend one object with another, returning the original,
 * modified, object. This is a great utility for simple inheritance.
 * 
 * @example var settings = { validate: false, limit: 5, name: "foo" };
 * var options = { validate: true, name: "bar" };
 * jQuery.extend(settings, options);
 * @result settings == { validate: true, limit: 5, name: "bar" }
 *
 * @test var settings = { xnumber1: 5, xnumber2: 7, xstring1: "peter", xstring2: "pan" };
 * var options =     { xnumber2: 1, xstring2: "x", xxx: "newstring" };
 * var optionsCopy = { xnumber2: 1, xstring2: "x", xxx: "newstring" };
 * var merged = { xnumber1: 5, xnumber2: 1, xstring1: "peter", xstring2: "x", xxx: "newstring" };
 * jQuery.extend(settings, options);
 * isSet( settings, merged, "Check if extended: settings must be extended" );
 * isSet ( options, optionsCopy, "Check if not modified: options must not be modified" );
 *
 * @name $.extend
 * @param Object obj The object to extend
 * @param Object prop The object that will be merged into the first.
 * @type Object
 * @cat Javascript
 */
jQuery.extend = jQuery.fn.extend = function(obj,prop) {
        // Watch for the case where null or undefined gets passed in by accident
        if ( arguments.length > 1 && (prop === null || prop == undefined) )
                return obj;

        // If no property object was provided, then we're extending jQuery
        if ( !prop ) { prop = obj; obj = this; }

        // Extend the base object
        for ( var i in prop ) obj[i] = prop[i];

        // Return the modified object
        return obj;
};

jQuery.extend({
        /**
         * @private
         * @name init
         * @type undefined
         * @cat Core
         */
        init: function(){
                jQuery.initDone = true;

                jQuery.each( jQuery.macros.axis, function(i,n){
                        jQuery.fn[ i ] = function(a) {
                                var ret = jQuery.map(this,n);
                                if ( a && a.constructor == String )
                                        ret = jQuery.filter(a,ret).r;
                                return this.pushStack( ret, arguments );
                        };
                });

                jQuery.each( jQuery.macros.to, function(i,n){
                        jQuery.fn[ i ] = function(){
                                var a = arguments;
                                return this.each(function(){
                                        for ( var j = 0; j < a.length; j++ )
                                                jQuery(a[j])[n]( this );
                                });
                        };
                });

                jQuery.each( jQuery.macros.each, function(i,n){
                        jQuery.fn[ i ] = function() {
                                return this.each( n, arguments );
                        };
                });

                jQuery.each( jQuery.macros.filter, function(i,n){
                        jQuery.fn[ n ] = function(num,fn) {
                                return this.filter( ":" + n + "(" + num + ")", fn );
                        };
                });

                jQuery.each( jQuery.macros.attr, function(i,n){
                        n = n || i;
                        jQuery.fn[ i ] = function(h) {
                                return h == undefined ?
                                        this.length ? this[0][n] : null :
                                        this.attr( n, h );
                        };
                });

                jQuery.each( jQuery.macros.css, function(i,n){
                        jQuery.fn[ n ] = function(h) {
                                return h == undefined ?
                                        ( this.length ? jQuery.css( this[0], n ) : null ) :
                                        this.css( n, h );
                        };
                });

        },

        /**
         * A generic iterator function, which can be used to seemlessly
         * iterate over both objects and arrays. This function is not the same
         * as $().each() - which is used to iterate, exclusively, over a jQuery
         * object. This function can be used to iterate over anything.
         *
         * @example $.each( [0,1,2], function(i){
         *   alert( "Item #" + i + ": " + this );
         * });
         * @desc This is an example of iterating over the items in an array, accessing both the current item and its index.
         *
         * @example $.each( { name: "John", lang: "JS" }, function(i){
         *   alert( "Name: " + i + ", Value: " + this );
         * });
         * @desc This is an example of iterating over the properties in an Object, accessing both the current item and its key.
         *
         * @name $.each
         * @param Object obj The object, or array, to iterate over.
         * @param Function fn The function that will be executed on every object.
         * @type Object
         * @cat Javascript
         */
        each: function( obj, fn, args ) {
                if ( obj.length == undefined )
                        for ( var i in obj )
                                fn.apply( obj[i], args || [i, obj[i]] );
                else
                        for ( var i = 0; i < obj.length; i++ )
                                if ( fn.apply( obj[i], args || [i, obj[i]] ) === false ) break;
                return obj;
        },

        className: {
                add: function(o,c){
                        if (jQuery.className.has(o,c)) return;
                        o.className += ( o.className ? " " : "" ) + c;
                },
                remove: function(o,c){
                        if( !c ) {
                                o.className = "";
                        } else {
                                var classes = o.className.split(" ");
                                for(var i=0; i<classes.length; i++) {
                                        if(classes[i] == c) {
                                                classes.splice(i, 1);
                                                break;
                                        }
                                }
                                o.className = classes.join(' ');
                        }
                },
                has: function(e,a) {
                        if ( e.className != undefined )
                                e = e.className;
                        return new RegExp("(^|\\s)" + a + "(\\s|$)").test(e);
                }
        },

        /**
         * Swap in/out style options.
         * @private
         */
        swap: function(e,o,f) {
                for ( var i in o ) {
                        e.style["old"+i] = e.style[i];
                        e.style[i] = o[i];
                }
                f.apply( e, [] );
                for ( var i in o )
                        e.style[i] = e.style["old"+i];
        },

        css: function(e,p) {
                if ( p == "height" || p == "width" ) {
                        var old = {}, oHeight, oWidth, d = ["Top","Bottom","Right","Left"];

                        for ( var i in d ) {
                                old["padding" + d[i]] = 0;
                                old["border" + d[i] + "Width"] = 0;
                        }

                        jQuery.swap( e, old, function() {
                                if (jQuery.css(e,"display") != "none") {
                                        oHeight = e.offsetHeight;
                                        oWidth = e.offsetWidth;
                                } else {
                                        e = jQuery(e.cloneNode(true))
                                                .find(":radio").removeAttr("checked").end()
                                                .css({
                                                        visibility: "hidden", position: "absolute", display: "block", right: "0", left: "0"
                                                }).appendTo(e.parentNode)[0];

                                        var parPos = jQuery.css(e.parentNode,"position");
                                        if ( parPos == "" || parPos == "static" )
                                                e.parentNode.style.position = "relative";

                                        oHeight = e.clientHeight;
                                        oWidth = e.clientWidth;

                                        if ( parPos == "" || parPos == "static" )
                                                e.parentNode.style.position = "static";

                                        e.parentNode.removeChild(e);
                                }
                        });

                        return p == "height" ? oHeight : oWidth;
                }

                return jQuery.curCSS( e, p );
        },

        curCSS: function(elem, prop, force) {
                var ret;
                
                if (prop == 'opacity' && jQuery.browser.msie)
                        return jQuery.attr(elem.style, 'opacity');
                        
                if (prop == "float" || prop == "cssFloat")
                    prop = jQuery.browser.msie ? "styleFloat" : "cssFloat";

                if (!force && elem.style[prop]) {

                        ret = elem.style[prop];

                } else if (elem.currentStyle) {

                        var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
                        ret = elem.currentStyle[prop] || elem.currentStyle[newProp];

                } else if (document.defaultView && document.defaultView.getComputedStyle) {

                        if (prop == "cssFloat" || prop == "styleFloat")
                                prop = "float";

                        prop = prop.replace(/([A-Z])/g,"-$1").toLowerCase();
                        var cur = document.defaultView.getComputedStyle(elem, null);

                        if ( cur )
                                ret = cur.getPropertyValue(prop);
                        else if ( prop == 'display' )
                                ret = 'none';
                        else
                                jQuery.swap(elem, { display: 'block' }, function() {
                                        ret = document.defaultView.getComputedStyle(this,null).getPropertyValue(prop);
                                });

                }

                return ret;
        },
        
        clean: function(a) {
                var r = [];
                for ( var i = 0; i < a.length; i++ ) {
                        var arg = a[i];
                        if ( arg.constructor == String ) { // Convert html string into DOM nodes
                                // Trim whitespace, otherwise indexOf won't work as expected
                                var s = jQuery.trim(arg), div = document.createElement("div"), wrap = [0,"",""];

                                if ( !s.indexOf("<opt") ) // option or optgroup
                                        wrap = [1, "<select>", "</select>"];
                                else if ( !s.indexOf("<thead") || !s.indexOf("<tbody") )
                                        wrap = [1, "<table>", "</table>"];
                                else if ( !s.indexOf("<tr") )
                                        wrap = [2, "<table>", "</table>"];      // tbody auto-inserted
                                else if ( !s.indexOf("<td") || !s.indexOf("<th") )
                                        wrap = [3, "<table><tbody><tr>", "</tr></tbody></table>"];

                                // Go to html and back, then peel off extra wrappers
                                div.innerHTML = wrap[1] + s + wrap[2];
                                while ( wrap[0]-- ) div = div.firstChild;
                                
                                // Have to loop through the childNodes here to 
                                // prevent a Safari crash with text nodes and /n characters
                                for ( var j = 0; j < div.childNodes.length; j++ )
                                        r.push( div.childNodes[j] );
                        } 
                        else if ( arg.length != undefined && !arg.nodeType ) // Handles Array, jQuery, DOM NodeList collections
                                for ( var n = 0; n < arg.length; n++ )
                                        r.push(arg[n]);
                        else
                                r.push( arg.nodeType ? arg : document.createTextNode(arg.toString()) );
                }

                return r;
        },

        expr: {
                "": "m[2]== '*'||a.nodeName.toUpperCase()==m[2].toUpperCase()",
                "#": "a.getAttribute('id')&&a.getAttribute('id')==m[2]",
                ":": {
                        // Position Checks
                        lt: "i<m[3]-0",
                        gt: "i>m[3]-0",
                        nth: "m[3]-0==i",
                        eq: "m[3]-0==i",
                        first: "i==0",
                        last: "i==r.length-1",
                        even: "i%2==0",
                        odd: "i%2",

                        // Child Checks
                        "nth-child": "jQuery.sibling(a,m[3]).cur",
                        "first-child": "jQuery.sibling(a,0).cur",
                        "last-child": "jQuery.sibling(a,0).last",
                        "only-child": "jQuery.sibling(a).length==1",

                        // Parent Checks
                        parent: "a.childNodes.length",
                        empty: "!a.childNodes.length",

                        // Text Check
                        contains: "jQuery.fn.text.apply([a]).indexOf(m[3])>=0",

                        // Visibility
                        visible: "a.type!='hidden'&&jQuery.css(a,'display')!='none'&&jQuery.css(a,'visibility')!='hidden'",
                        hidden: "a.type=='hidden'||jQuery.css(a,'display')=='none'||jQuery.css(a,'visibility')=='hidden'",

                        // Form attributes
                        enabled: "!a.disabled",
                        disabled: "a.disabled",
                        checked: "a.checked",
                        selected: "a.selected || jQuery.attr(a, 'selected')",

                        // Form elements
                        text: "a.type=='text'",
                        radio: "a.type=='radio'",
                        checkbox: "a.type=='checkbox'",
                        file: "a.type=='file'",
                        password: "a.type=='password'",
                        submit: "a.type=='submit'",
                        image: "a.type=='image'",
                        reset: "a.type=='reset'",
                        button: "a.type=='button'",
                        input: "a.nodeName.toLowerCase().match(/input|select|textarea|button/)"
                },
                ".": "jQuery.className.has(a,m[2])",
                "@": {
                        "=": "z==m[4]",
                        "!=": "z!=m[4]",
                        "^=": "z && !z.indexOf(m[4])",
                        "$=": "z && z.substr(z.length - m[4].length,m[4].length)==m[4]",
                        "*=": "z && z.indexOf(m[4])>=0",
                        "": "z"
                },
                "[": "jQuery.find(m[2],a).length"
        },

        token: [
                "\\.\\.|/\\.\\.", "a.parentNode",
                ">|/", "jQuery.sibling(a.firstChild)",
                "\\+", "jQuery.sibling(a).next",
                "~", function(a){
                        var r = [];
                        var s = jQuery.sibling(a);
                        if ( s.n > 0 )
                                for ( var i = s.n; i < s.length; i++ )
                                        r.push( s[i] );
                        return r;
                }
        ],

        /**
         *
         * @test t( "Element Selector", "div", ["main","foo"] );
         * t( "Element Selector", "body", ["body"] );
         * t( "Element Selector", "html", ["html"] );
         * ok( $("*").size() >= 30, "Element Selector" );
         * t( "Parent Element", "div div", ["foo"] );
         *
         * t( "ID Selector", "#body", ["body"] );
         * t( "ID Selector w/ Element", "body#body", ["body"] );
         * t( "ID Selector w/ Element", "ul#first", [] );
         *
         * t( "Class Selector", ".blog", ["mark","simon"] );
         * t( "Class Selector", ".blog.link", ["simon"] );
         * t( "Class Selector w/ Element", "a.blog", ["mark","simon"] );
         * t( "Parent Class Selector", "p .blog", ["mark","simon"] );
         *
         * t( "Comma Support", "a.blog, div", ["mark","simon","main","foo"] );
         * t( "Comma Support", "a.blog , div", ["mark","simon","main","foo"] );
         * t( "Comma Support", "a.blog ,div", ["mark","simon","main","foo"] );
         * t( "Comma Support", "a.blog,div", ["mark","simon","main","foo"] );
         *
         * t( "Child", "p > a", ["simon1","google","groups","mark","yahoo","simon"] );
         * t( "Child", "p> a", ["simon1","google","groups","mark","yahoo","simon"] );
         * t( "Child", "p >a", ["simon1","google","groups","mark","yahoo","simon"] );
         * t( "Child", "p>a", ["simon1","google","groups","mark","yahoo","simon"] );
         * t( "Child w/ Class", "p > a.blog", ["mark","simon"] );
         * t( "All Children", "code > *", ["anchor1","anchor2"] );
         * t( "All Grandchildren", "p > * > *", ["anchor1","anchor2"] );
         * t( "Adjacent", "a + a", ["groups"] );
         * t( "Adjacent", "a +a", ["groups"] );
         * t( "Adjacent", "a+ a", ["groups"] );
         * t( "Adjacent", "a+a", ["groups"] );
         * t( "Adjacent", "p + p", ["ap","en","sap"] );
         * t( "Comma, Child, and Adjacent", "a + a, code > a", ["groups","anchor1","anchor2"] );
         * t( "First Child", "p:first-child", ["firstp","sndp"] );
         * t( "Attribute Exists", "a[@title]", ["google"] );
         * t( "Attribute Exists", "*[@title]", ["google"] );
         * t( "Attribute Exists", "[@title]", ["google"] );
         * 
         * t( "Non-existing part of attribute", "[@name*=bla]", [] ); 
         * t( "Non-existing start of attribute", "[@name^=bla]", [] ); 
         * t( "Non-existing end of attribute", "[@name$=bla]", [] ); 
         *
         * t( "Attribute Equals", "a[@rel='bookmark']", ["simon1"] );
         * t( "Attribute Equals", 'a[@rel="bookmark"]', ["simon1"] );
         * t( "Attribute Equals", "a[@rel=bookmark]", ["simon1"] );
         * t( "Multiple Attribute Equals", "input[@type='hidden'],input[@type='radio']", ["hidden1","radio1","radio2"] );
         * t( "Multiple Attribute Equals", "input[@type=\"hidden\"],input[@type='radio']", ["hidden1","radio1","radio2"] );
         * t( "Multiple Attribute Equals", "input[@type=hidden],input[@type=radio]", ["hidden1","radio1","radio2"] );
         *
         * t( "Attribute Begins With", "a[@href ^= 'http://www']", ["google","yahoo"] );
         * t( "Attribute Ends With", "a[@href $= 'org/']", ["mark"] );
         * t( "Attribute Contains", "a[@href *= 'google']", ["google","groups"] );
         * t( "First Child", "p:first-child", ["firstp","sndp"] );
         * t( "Last Child", "p:last-child", ["sap"] );
         * t( "Only Child", "a:only-child", ["simon1","anchor1","yahoo","anchor2"] );
         * t( "Empty", "ul:empty", ["firstUL"] );
         * t( "Enabled UI Element", "input:enabled", ["text1","radio1","radio2","check1","check2","hidden1","hidden2","name"] );
         * t( "Disabled UI Element", "input:disabled", ["text2"] );
         * t( "Checked UI Element", "input:checked", ["radio2","check1"] );
         * t( "Selected Option Element", "option:selected", ["option1a","option2d","option3b","option3c"] );
         * t( "Text Contains", "a:contains('Google')", ["google","groups"] );
         * t( "Text Contains", "a:contains('Google Groups')", ["groups"] );
         * t( "Element Preceded By", "p ~ div", ["foo"] );
         * t( "Not", "a.blog:not(.link)", ["mark"] );
         *
         * ok( jQuery.find("//*").length >= 30, "All Elements (//*)" );
         * t( "All Div Elements", "//div", ["main","foo"] );
         * t( "Absolute Path", "/html/body", ["body"] );
         * t( "Absolute Path w/ *", "/* /body", ["body"] );
         * t( "Long Absolute Path", "/html/body/dl/div/div/p", ["sndp","en","sap"] );
         * t( "Absolute and Relative Paths", "/html//div", ["main","foo"] );
         * t( "All Children, Explicit", "//code/*", ["anchor1","anchor2"] );
         * t( "All Children, Implicit", "//code/", ["anchor1","anchor2"] );
         * t( "Attribute Exists", "//a[@title]", ["google"] );
         * t( "Attribute Equals", "//a[@rel='bookmark']", ["simon1"] );
         * t( "Parent Axis", "//p/..", ["main","foo"] );
         * t( "Sibling Axis", "//p/../", ["firstp","ap","foo","first","firstUL","empty","form","sndp","en","sap"] );
         * t( "Sibling Axis", "//p/../*", ["firstp","ap","foo","first","firstUL","empty","form","sndp","en","sap"] );
         * t( "Has Children", "//p[a]", ["firstp","ap","en","sap"] );
         *
         * t( "nth Element", "p:nth(1)", ["ap"] );
         * t( "First Element", "p:first", ["firstp"] );
         * t( "Last Element", "p:last", ["first"] );
         * t( "Even Elements", "p:even", ["firstp","sndp","sap"] );
         * t( "Odd Elements", "p:odd", ["ap","en","first"] );
         * t( "Position Equals", "p:eq(1)", ["ap"] );
         * t( "Position Greater Than", "p:gt(0)", ["ap","sndp","en","sap","first"] );
         * t( "Position Less Than", "p:lt(3)", ["firstp","ap","sndp"] );
         * t( "Is A Parent", "p:parent", ["firstp","ap","sndp","en","sap","first"] );
         * t( "Is Visible", "input:visible", ["text1","text2","radio1","radio2","check1","check2","name"] );
         * t( "Is Hidden", "input:hidden", ["hidden1","hidden2"] );
         *
         * t( "Grouped Form Elements", "input[@name='foo[bar]']", ["hidden2"] );
         *
         * t( "All Children of ID", "#foo/*", ["sndp", "en", "sap"]  );
         * t( "All Children of ID with no children", "#firstUL/*", []  );
         *
         * t( "Form element :input", ":input", ["text1", "text2", "radio1", "radio2", "check1", "check2", "hidden1", "hidden2", "name", "button", "area1", "select1", "select2", "select3"] );
         * t( "Form element :radio", ":radio", ["radio1", "radio2"] );
         * t( "Form element :checkbox", ":checkbox", ["check1", "check2"] );
         * t( "Form element :text", ":text", ["text1", "text2", "hidden2", "name"] );
         * t( "Form element :radio:checked", ":radio:checked", ["radio2"] );
         * t( "Form element :checkbox:checked", ":checkbox:checked", ["check1"] );
         * t( "Form element :checkbox:checked, :radio:checked", ":checkbox:checked, :radio:checked", ["check1", "radio2"] );
         *
         * t( ":not() Existing attribute", "select:not([@multiple])", ["select1", "select2"]);
         * t( ":not() Equals attribute", "select:not([@name=select1])", ["select2", "select3"]);
         * t( ":not() Equals quoted attribute", "select:not([@name='select1'])", ["select2", "select3"]);
         *
         * @name $.find
         * @type Array<Element>
         * @private
         * @cat Core
         */
        find: function( t, context ) {
                // Make sure that the context is a DOM Element
                if ( context && context.nodeType == undefined )
                        context = null;

                // Set the correct context (if none is provided)
                context = context || jQuery.context || document;

                if ( t.constructor != String ) return [t];

                if ( !t.indexOf("//") ) {
                        context = context.documentElement;
                        t = t.substr(2,t.length);
                } else if ( !t.indexOf("/") ) {
                        context = context.documentElement;
                        t = t.substr(1,t.length);
                        // FIX Assume the root element is right :(
                        if ( t.indexOf("/") >= 1 )
                                t = t.substr(t.indexOf("/"),t.length);
                }

                var ret = [context];
                var done = [];
                var last = null;

                while ( t.length > 0 && last != t ) {
                        var r = [];
                        last = t;

                        t = jQuery.trim(t).replace( /^\/\//i, "" );

                        var foundToken = false;

                        for ( var i = 0; i < jQuery.token.length; i += 2 ) {
                                if ( foundToken ) continue;

                                var re = new RegExp("^(" + jQuery.token[i] + ")");
                                var m = re.exec(t);

                                if ( m ) {
                                        r = ret = jQuery.map( ret, jQuery.token[i+1] );
                                        t = jQuery.trim( t.replace( re, "" ) );
                                        foundToken = true;
                                }
                        }

                        if ( !foundToken ) {
                                if ( !t.indexOf(",") || !t.indexOf("|") ) {
                                        if ( ret[0] == context ) ret.shift();
                                        done = jQuery.merge( done, ret );
                                        r = ret = [context];
                                        t = " " + t.substr(1,t.length);
                                } else {
                                        var re2 = /^([#.]?)([a-z0-9\\*_-]*)/i;
                                        var m = re2.exec(t);

                                        if ( m[1] == "#" ) {
                                                // Ummm, should make this work in all XML docs
                                                var oid = document.getElementById(m[2]);
                                                r = ret = oid ? [oid] : [];
                                                t = t.replace( re2, "" );
                                        } else {
                                                if ( !m[2] || m[1] == "." ) m[2] = "*";

                                                for ( var i = 0; i < ret.length; i++ )
                                                        r = jQuery.merge( r,
                                                                m[2] == "*" ?
                                                                        jQuery.getAll(ret[i]) :
                                                                        ret[i].getElementsByTagName(m[2])
                                                        );
                                        }
                                }

                        }

                        if ( t ) {
                                var val = jQuery.filter(t,r);
                                ret = r = val.r;
                                t = jQuery.trim(val.t);
                        }
                }

                if ( ret && ret[0] == context ) ret.shift();
                done = jQuery.merge( done, ret );

                return done;
        },

        getAll: function(o,r) {
                r = r || [];
                var s = o.childNodes;
                for ( var i = 0; i < s.length; i++ )
                        if ( s[i].nodeType == 1 ) {
                                r.push( s[i] );
                                jQuery.getAll( s[i], r );
                        }
                return r;
        },

        attr: function(elem, name, value){
                var fix = {
                        "for": "htmlFor",
                        "class": "className",
                        "float": jQuery.browser.msie ? "styleFloat" : "cssFloat",
                        cssFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
                        innerHTML: "innerHTML",
                        className: "className",
                        value: "value",
                        disabled: "disabled",
                        checked: "checked",
                        readonly: "readOnly"
                };
                
                // IE actually uses filters for opacity ... elem is actually elem.style
                if (name == "opacity" && jQuery.browser.msie && value != undefined) {
                        // IE has trouble with opacity if it does not have layout
                        // Would prefer to check element.hasLayout first but don't have access to the element here
                        elem['zoom'] = 1; 
                        if (value == 1) // Remove filter to avoid more IE weirdness
                                return elem["filter"] = elem["filter"].replace(/alpha\([^\)]*\)/gi,"");
                        else
                                return elem["filter"] = elem["filter"].replace(/alpha\([^\)]*\)/gi,"") + "alpha(opacity=" + value * 100 + ")";
                } else if (name == "opacity" && jQuery.browser.msie) {
                        return elem["filter"] ? parseFloat( elem["filter"].match(/alpha\(opacity=(.*)\)/)[1] )/100 : 1;
                }
                
                // Mozilla doesn't play well with opacity 1
                if (name == "opacity" && jQuery.browser.mozilla && value == 1) value = 0.9999;

                if ( fix[name] ) {
                        if ( value != undefined ) elem[fix[name]] = value;
                        return elem[fix[name]];
                } else if( value == undefined && jQuery.browser.msie && elem.nodeName && elem.nodeName.toUpperCase() == 'FORM' && (name == 'action' || name == 'method') ) {
                        return elem.getAttributeNode(name).nodeValue;
                } else if ( elem.getAttribute != undefined && elem.tagName ) { // IE elem.getAttribute passes even for style
                        if ( value != undefined ) elem.setAttribute( name, value );
                        return elem.getAttribute( name );
                } else {
                        name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
                        if ( value != undefined ) elem[name] = value;
                        return elem[name];
                }
        },

        // The regular expressions that power the parsing engine
        parse: [
                // Match: [@value='test'], [@foo]
                "\\[ *(@)S *([!*$^=]*) *('?\"?)(.*?)\\4 *\\]",

                // Match: [div], [div p]
                "(\\[)\s*(.*?)\s*\\]",

                // Match: :contains('foo')
                "(:)S\\(\"?'?([^\\)]*?)\"?'?\\)",

                // Match: :even, :last-chlid
                "([:.#]*)S"
        ],

        filter: function(t,r,not) {
                // Figure out if we're doing regular, or inverse, filtering
                var g = not !== false ? jQuery.grep :
                        function(a,f) {return jQuery.grep(a,f,true);};

                while ( t && /^[a-z[({<*:.#]/i.test(t) ) {

                        var p = jQuery.parse;

                        for ( var i = 0; i < p.length; i++ ) {
                
                                // Look for, and replace, string-like sequences
                                // and finally build a regexp out of it
                                var re = new RegExp(
                                        "^" + p[i].replace("S", "([a-z*_-][a-z0-9_-]*)"), "i" );

                                var m = re.exec( t );

                                if ( m ) {
                                        // Re-organize the first match
                                        if ( !i )
                                                m = ["",m[1], m[3], m[2], m[5]];

                                        // Remove what we just matched
                                        t = t.replace( re, "" );

                                        break;
                                }
                        }

                        // :not() is a special case that can be optimized by
                        // keeping it out of the expression list
                        if ( m[1] == ":" && m[2] == "not" )
                                r = jQuery.filter(m[3],r,false).r;

                        // Otherwise, find the expression to execute
                        else {
                                var f = jQuery.expr[m[1]];
                                if ( f.constructor != String )
                                        f = jQuery.expr[m[1]][m[2]];

                                // Build a custom macro to enclose it
                                eval("f = function(a,i){" +
                                        ( m[1] == "@" ? "z=jQuery.attr(a,m[3]);" : "" ) +
                                        "return " + f + "}");

                                // Execute it against the current filter
                                r = g( r, f );
                        }
                }

                // Return an array of filtered elements (r)
                // and the modified expression string (t)
                return { r: r, t: t };
        },

        /**
         * Remove the whitespace from the beginning and end of a string.
         *
         * @example $.trim("  hello, how are you?  ");
         * @result "hello, how are you?"
         *
         * @name $.trim
         * @type String
         * @param String str The string to trim.
         * @cat Javascript
         */
        trim: function(t){
                return t.replace(/^\s+|\s+$/g, "");
        },

        /**
         * All ancestors of a given element.
         *
         * @private
         * @name $.parents
         * @type Array<Element>
         * @param Element elem The element to find the ancestors of.
         * @cat DOM/Traversing
         */
        parents: function( elem ){
                var matched = [];
                var cur = elem.parentNode;
                while ( cur && cur != document ) {
                        matched.push( cur );
                        cur = cur.parentNode;
                }
                return matched;
        },

        /**
         * All elements on a specified axis.
         *
         * @private
         * @name $.sibling
         * @type Array
         * @param Element elem The element to find all the siblings of (including itself).
         * @cat DOM/Traversing
         */
        sibling: function(elem, pos, not) {
                var elems = [];
                
                if(elem) {
                        var siblings = elem.parentNode.childNodes;
                        for ( var i = 0; i < siblings.length; i++ ) {
                                if ( not === true && siblings[i] == elem ) continue;
        
                                if ( siblings[i].nodeType == 1 )
                                        elems.push( siblings[i] );
                                if ( siblings[i] == elem )
                                        elems.n = elems.length - 1;
                        }
                }

                return jQuery.extend( elems, {
                        last: elems.n == elems.length - 1,
                        cur: pos == "even" && elems.n % 2 == 0 || pos == "odd" && elems.n % 2 || elems[pos] == elem,
                        prev: elems[elems.n - 1],
                        next: elems[elems.n + 1]
                });
        },

        /**
         * Merge two arrays together, removing all duplicates. The final order
         * or the new array is: All the results from the first array, followed
         * by the unique results from the second array.
         *
         * @example $.merge( [0,1,2], [2,3,4] )
         * @result [0,1,2,3,4]
         *
         * @example $.merge( [3,2,1], [4,3,2] )
         * @result [3,2,1,4]
         *
         * @name $.merge
         * @type Array
         * @param Array first The first array to merge.
         * @param Array second The second array to merge.
         * @cat Javascript
         */
        merge: function(first, second) {
                var result = [];

                // Move b over to the new array (this helps to avoid
                // StaticNodeList instances)
                for ( var k = 0; k < first.length; k++ )
                        result[k] = first[k];

                // Now check for duplicates between a and b and only
                // add the unique items
                for ( var i = 0; i < second.length; i++ ) {
                        var noCollision = true;

                        // The collision-checking process
                        for ( var j = 0; j < first.length; j++ )
                                if ( second[i] == first[j] )
                                        noCollision = false;

                        // If the item is unique, add it
                        if ( noCollision )
                                result.push( second[i] );
                }

                return result;
        },

        /**
         * Filter items out of an array, by using a filter function.
         * The specified function will be passed two arguments: The
         * current array item and the index of the item in the array. The
         * function should return 'true' if you wish to keep the item in
         * the array, false if it should be removed.
         *
         * @example $.grep( [0,1,2], function(i){
         *   return i > 0;
         * });
         * @result [1, 2]
         *
         * @name $.grep
         * @type Array
         * @param Array array The Array to find items in.
         * @param Function fn The function to process each item against.
         * @param Boolean inv Invert the selection - select the opposite of the function.
         * @cat Javascript
         */
        grep: function(elems, fn, inv) {
                // If a string is passed in for the function, make a function
                // for it (a handy shortcut)
                if ( fn.constructor == String )
                        fn = new Function("a","i","return " + fn);

                var result = [];

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

                return result;
        },

        /**
         * Translate all items in an array to another array of items. 
         * The translation function that is provided to this method is 
         * called for each item in the array and is passed one argument: 
         * The item to be translated. The function can then return:
         * The translated value, 'null' (to remove the item), or 
         * an array of values - which will be flattened into the full array.
         *
         * @example $.map( [0,1,2], function(i){
         *   return i + 4;
         * });
         * @result [4, 5, 6]
         *
         * @example $.map( [0,1,2], function(i){
         *   return i > 0 ? i + 1 : null;
         * });
         * @result [2, 3]
         * 
         * @example $.map( [0,1,2], function(i){
         *   return [ i, i + 1 ];
         * });
         * @result [0, 1, 1, 2, 2, 3]
         *
         * @name $.map
         * @type Array
         * @param Array array The Array to translate.
         * @param Function fn The function to process each item against.
         * @cat Javascript
         */
        map: function(elems, fn) {
                // If a string is passed in for the function, make a function
                // for it (a handy shortcut)
                if ( fn.constructor == String )
                        fn = new Function("a","return " + fn);

                var result = [];

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

                        if ( val !== null && val != undefined ) {
                                if ( val.constructor != Array ) val = [val];
                                result = jQuery.merge( result, val );
                        }
                }

                return result;
        },

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

                // Bind an event to an element
                // Original by Dean Edwards
                add: function(element, type, handler) {
                        // For whatever reason, IE has trouble passing the window object
                        // around, causing it to be cloned in the process
                        if ( jQuery.browser.msie && element.setInterval != undefined )
                                element = window;

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

                        // Init the element's event structure
                        if (!element.events)
                                element.events = {};

                        // Get the current list of functions bound to this event
                        var handlers = element.events[type];

                        // If it hasn't been initialized yet
                        if (!handlers) {
                                // Init the event handler queue
                                handlers = element.events[type] = {};

                                // Remember an existing handler, if it's already there
                                if (element["on" + type])
                                        handlers[0] = element["on" + type];
                        }

                        // Add the function to the element's handler list
                        handlers[handler.guid] = handler;

                        // And bind the global event handler to the element
                        element["on" + type] = this.handle;

                        // Remember the function in a global list (for triggering)
                        if (!this.global[type])
                                this.global[type] = [];
                        this.global[type].push( element );
                },

                guid: 1,
                global: {},

                // Detach an event or set of events from an element
                remove: function(element, type, handler) {
                        if (element.events)
                                if (type && element.events[type])
                                        if ( handler )
                                                delete element.events[type][handler.guid];
                                        else
                                                for ( var i in element.events[type] )
                                                        delete element.events[type][i];
                                else
                                        for ( var j in element.events )
                                                this.remove( element, j );
                },

                trigger: function(type,data,element) {
                        // Touch up the incoming data
                        data = data || [];

                        // Handle a global trigger
                        if ( !element ) {
                                var g = this.global[type];
                                if ( g )
                                        for ( var i = 0; i < g.length; i++ )
                                                this.trigger( type, data, g[i] );

                        // Handle triggering a single element
                        } else if ( element["on" + type] ) {
                                // Pass along a fake event
                                data.unshift( this.fix({ type: type, target: element }) );

                                // Trigger the event
                                element["on" + type].apply( element, data );
                        }
                },

                handle: function(event) {
                        if ( typeof jQuery == "undefined" ) return false;

                        event = event || jQuery.event.fix( window.event );

                        // If no correct event was found, fail
                        if ( !event ) return false;

                        var returnValue = true;

                        var c = this.events[event.type];

                        var args = [].slice.call( arguments, 1 );
                        args.unshift( event );

                        for ( var j in c ) {
                                if ( c[j].apply( this, args ) === false ) {
                                        event.preventDefault();
                                        event.stopPropagation();
                                        returnValue = false;
                                }
                        }

                        return returnValue;
                },

                fix: function(event) {
                        // check IE
                        if(jQuery.browser.msie) {
                                // get real event from window.event
                                event = window.event;
                                // fix target property
                                event.target = event.srcElement;
                        // check safari and if target is a textnode
                        } else if(jQuery.browser.safari && event.target.nodeType == 3) {
                                // target is readonly, clone the event object
                                event = jQuery.extend({}, event);
                                // get parentnode from textnode
                                event.target = event.target.parentNode;
                        }
                        // fix preventDefault and stopPropagation
                        event.preventDefault = function() {
                                this.returnValue = false;
                        };
                        event.stopPropagation = function() {
                                this.cancelBubble = true;
                        };
                        return event;
                }

        }
});

/**
 * Contains flags for the useragent, read from navigator.userAgent.
 * Available flags are: safari, opera, msie, mozilla
 * This property is available before the DOM is ready, therefore you can
 * use it to add ready events only for certain browsers.
 *
 * See <a href="http://davecardwell.co.uk/geekery/javascript/jquery/jqbrowser/">
 * jQBrowser plugin</a> for advanced browser detection:
 *
 * @example $.browser.msie
 * @desc returns true if the current useragent is some version of microsoft's internet explorer
 *
 * @example if($.browser.safari) { $( function() { alert("this is safari!"); } ); }
 * @desc Alerts "this is safari!" only for safari browsers
 *
 * @name $.browser
 * @type Boolean
 * @cat Javascript
 */
new function() {
        var b = navigator.userAgent.toLowerCase();

        // Figure out what browser is being used
        jQuery.browser = {
                safari: /webkit/.test(b),
                opera: /opera/.test(b),
                msie: /msie/.test(b) && !/opera/.test(b),
                mozilla: /mozilla/.test(b) && !/(compatible|webkit)/.test(b)
        };

        // Check to see if the W3C box model is being used
        jQuery.boxModel = !jQuery.browser.msie || document.compatMode == "CSS1Compat";
};

jQuery.macros = {
        to: {
                /**
                 * Append all of the matched elements to another, specified, set of elements.
                 * This operation is, essentially, the reverse of doing a regular
                 * $(A).append(B), in that instead of appending B to A, you're appending
                 * A to B.
                 *
                 * @example $("p").appendTo("#foo");
                 * @before <p>I would like to say: </p><div id="foo"></div>
                 * @result <div id="foo"><p>I would like to say: </p></div>
                 *
                 * @name appendTo
                 * @type jQuery
                 * @param String expr A jQuery expression of elements to match.
                 * @cat DOM/Manipulation
                 */
                appendTo: "append",

                /**
                 * Prepend all of the matched elements to another, specified, set of elements.
                 * This operation is, essentially, the reverse of doing a regular
                 * $(A).prepend(B), in that instead of prepending B to A, you're prepending
                 * A to B.
                 *
                 * @example $("p").prependTo("#foo");
                 * @before <p>I would like to say: </p><div id="foo"><b>Hello</b></div>
                 * @result <div id="foo"><p>I would like to say: </p><b>Hello</b></div>
                 *
                 * @name prependTo
                 * @type jQuery
                 * @param String expr A jQuery expression of elements to match.
                 * @cat DOM/Manipulation
                 */
                prependTo: "prepend",

                /**
                 * Insert all of the matched elements before another, specified, set of elements.
                 * This operation is, essentially, the reverse of doing a regular
                 * $(A).before(B), in that instead of inserting B before A, you're inserting
                 * A before B.
                 *
                 * @example $("p").insertBefore("#foo");
                 * @before <div id="foo">Hello</div><p>I would like to say: </p>
                 * @result <p>I would like to say: </p><div id="foo">Hello</div>
                 *
                 * @name insertBefore
                 * @type jQuery
                 * @param String expr A jQuery expression of elements to match.
                 * @cat DOM/Manipulation
                 */
                insertBefore: "before",

                /**
                 * Insert all of the matched elements after another, specified, set of elements.
                 * This operation is, essentially, the reverse of doing a regular
                 * $(A).after(B), in that instead of inserting B after A, you're inserting
                 * A after B.
                 *
                 * @example $("p").insertAfter("#foo");
                 * @before <p>I would like to say: </p><div id="foo">Hello</div>
                 * @result <div id="foo">Hello</div><p>I would like to say: </p>
                 *
                 * @name insertAfter
                 * @type jQuery
                 * @param String expr A jQuery expression of elements to match.
                 * @cat DOM/Manipulation
                 */
                insertAfter: "after"
        },

        /**
         * Get the current CSS width of the first matched element.
         *
         * @example $("p").width();
         * @before <p>This is just a test.</p>
         * @result "300px"
         *
         * @name width
         * @type String
         * @cat CSS
         */

        /**
         * Set the CSS width of every matched element. Be sure to include
         * the "px" (or other unit of measurement) after the number that you
         * specify, otherwise you might get strange results.
         *
         * @example $("p").width("20px");
         * @before <p>This is just a test.</p>
         * @result <p style="width:20px;">This is just a test.</p>
         *
         * @name width
         * @type jQuery
         * @param String val Set the CSS property to the specified value.
         * @cat CSS
         */

        /**
         * Get the current CSS height of the first matched element.
         *
         * @example $("p").height();
         * @before <p>This is just a test.</p>
         * @result "14px"
         *
         * @name height
         * @type String
         * @cat CSS
         */

        /**
         * Set the CSS height of every matched element. Be sure to include
         * the "px" (or other unit of measurement) after the number that you
         * specify, otherwise you might get strange results.
         *
         * @example $("p").height("20px");
         * @before <p>This is just a test.</p>
         * @result <p style="height:20px;">This is just a test.</p>
         *
         * @name height
         * @type jQuery
         * @param String val Set the CSS property to the specified value.
         * @cat CSS
         */

        /**
         * Get the current CSS top of the first matched element.
         *
         * @example $("p").top();
         * @before <p>This is just a test.</p>
         * @result "0px"
         *
         * @name top
         * @type String
         * @cat CSS
         */

        /**
         * Set the CSS top of every matched element. Be sure to include
         * the "px" (or other unit of measurement) after the number that you
         * specify, otherwise you might get strange results.
         *
         * @example $("p").top("20px");
         * @before <p>This is just a test.</p>
         * @result <p style="top:20px;">This is just a test.</p>
         *
         * @name top
         * @type jQuery
         * @param String val Set the CSS property to the specified value.
         * @cat CSS
         */

        /**
         * Get the current CSS left of the first matched element.
         *
         * @example $("p").left();
         * @before <p>This is just a test.</p>
         * @result "0px"
         *
         * @name left
         * @type String
         * @cat CSS
         */

        /**
         * Set the CSS left of every matched element. Be sure to include
         * the "px" (or other unit of measurement) after the number that you
         * specify, otherwise you might get strange results.
         *
         * @example $("p").left("20px");
         * @before <p>This is just a test.</p>
         * @result <p style="left:20px;">This is just a test.</p>
         *
         * @name left
         * @type jQuery
         * @param String val Set the CSS property to the specified value.
         * @cat CSS
         */

        /**
         * Get the current CSS position of the first matched element.
         *
         * @example $("p").position();
         * @before <p>This is just a test.</p>
         * @result "static"
         *
         * @name position
         * @type String
         * @cat CSS
         */

        /**
         * Set the CSS position of every matched element.
         *
         * @example $("p").position("relative");
         * @before <p>This is just a test.</p>
         * @result <p style="position:relative;">This is just a test.</p>
         *
         * @name position
         * @type jQuery
         * @param String val Set the CSS property to the specified value.
         * @cat CSS
         */

        /**
         * Get the current CSS float of the first matched element.
         *
         * @example $("p").float();
         * @before <p>This is just a test.</p>
         * @result "none"
         *
         * @name float
         * @type String
         * @cat CSS
         */

        /**
         * Set the CSS float of every matched element.
         *
         * @example $("p").float("left");
         * @before <p>This is just a test.</p>
         * @result <p style="float:left;">This is just a test.</p>
         *
         * @name float
         * @type jQuery
         * @param String val Set the CSS property to the specified value.
         * @cat CSS
         */

        /**
         * Get the current CSS overflow of the first matched element.
         *
         * @example $("p").overflow();
         * @before <p>This is just a test.</p>
         * @result "none"
         *
         * @name overflow
         * @type String
         * @cat CSS
         */

        /**
         * Set the CSS overflow of every matched element.
         *
         * @example $("p").overflow("auto");
         * @before <p>This is just a test.</p>
         * @result <p style="overflow:auto;">This is just a test.</p>
         *
         * @name overflow
         * @type jQuery
         * @param String val Set the CSS property to the specified value.
         * @cat CSS
         */

        /**
         * Get the current CSS color of the first matched element.
         *
         * @example $("p").color();
         * @before <p>This is just a test.</p>
         * @result "black"
         *
         * @name color
         * @type String
         * @cat CSS
         */

        /**
         * Set the CSS color of every matched element.
         *
         * @example $("p").color("blue");
         * @before <p>This is just a test.</p>
         * @result <p style="color:blue;">This is just a test.</p>
         *
         * @name color
         * @type jQuery
         * @param String val Set the CSS property to the specified value.
         * @cat CSS
         */

        /**
         * Get the current CSS background of the first matched element.
         *
         * @example $("p").background();
         * @before <p style="background:blue;">This is just a test.</p>
         * @result "blue"
         *
         * @name background
         * @type String
         * @cat CSS
         */

        /**
         * Set the CSS background of every matched element.
         *
         * @example $("p").background("blue");
         * @before <p>This is just a test.</p>
         * @result <p style="background:blue;">This is just a test.</p>
         *
         * @name background
         * @type jQuery
         * @param String val Set the CSS property to the specified value.
         * @cat CSS
         */

        css: "width,height,top,left,position,float,overflow,color,background".split(","),

        /**
         * Reduce the set of matched elements to a single element.
         * The position of the element in the set of matched elements
         * starts at 0 and goes to length - 1.
         *
         * @example $("p").eq(1)
         * @before <p>This is just a test.</p><p>So is this</p>
         * @result [ <p>So is this</p> ]
         *
         * @name eq
         * @type jQuery
         * @param Number pos The index of the element that you wish to limit to.
         * @cat Core
         */

        /**
         * Reduce the set of matched elements to all elements before a given position.
         * The position of the element in the set of matched elements
         * starts at 0 and goes to length - 1.
         *
         * @example $("p").lt(1)
         * @before <p>This is just a test.</p><p>So is this</p>
         * @result [ <p>This is just a test.</p> ]
         *
         * @name lt
         * @type jQuery
         * @param Number pos Reduce the set to all elements below this position.
         * @cat Core
         */

        /**
         * Reduce the set of matched elements to all elements after a given position.
         * The position of the element in the set of matched elements
         * starts at 0 and goes to length - 1.
         *
         * @example $("p").gt(0)
         * @before <p>This is just a test.</p><p>So is this</p>
         * @result [ <p>So is this</p> ]
         *
         * @name gt
         * @type jQuery
         * @param Number pos Reduce the set to all elements after this position.
         * @cat Core
         */

        /**
         * Filter the set of elements to those that contain the specified text.
         *
         * @example $("p").contains("test")
         * @before <p>This is just a test.</p><p>So is this</p>
         * @result [ <p>This is just a test.</p> ]
         *
         * @name contains
         * @type jQuery
         * @param String str The string that will be contained within the text of an element.
         * @cat DOM/Traversing
         */

        filter: [ "eq", "lt", "gt", "contains" ],

        attr: {
                /**
                 * Get the current value of the first matched element.
                 *
                 * @example $("input").val();
                 * @before <input type="text" value="some text"/>
                 * @result "some text"
                 *
                 * @test ok( $("#text1").val() == "Test", "Check for value of input element" );
                 * ok( !$("#text1").val() == "", "Check for value of input element" );
                 *
                 * @name val
                 * @type String
                 * @cat DOM/Attributes
                 */

                /**
                 * Set the value of every matched element.
                 *
                 * @example $("input").val("test");
                 * @before <input type="text" value="some text"/>
                 * @result <input type="text" value="test"/>
                 *
                 * @test document.getElementById('text1').value = "bla";
                 * ok( $("#text1").val() == "bla", "Check for modified value of input element" );
                 * $("#text1").val('test');
                 * ok ( document.getElementById('text1').value == "test", "Check for modified (via val(String)) value of input element" );
                 *
                 * @name val
                 * @type jQuery
                 * @param String val Set the property to the specified value.
                 * @cat DOM/Attributes
                 */
                val: "value",

                /**
                 * Get the html contents of the first matched element.
                 *
                 * @example $("div").html();
                 * @before <div><input/></div>
                 * @result <input/>
                 *
                 * @name html
                 * @type String
                 * @cat DOM/Attributes
                 */

                /**
                 * Set the html contents of every matched element.
                 *
                 * @example $("div").html("<b>new stuff</b>");
                 * @before <div><input/></div>
                 * @result <div><b>new stuff</b></div>
                 *
                 * @test var div = $("div");
                 * div.html("<b>test</b>");
                 * var pass = true;
                 * for ( var i = 0; i < div.size(); i++ ) {
                 *   if ( div.get(i).childNodes.length == 0 ) pass = false;
                 * }
                 * ok( pass, "Set HTML" );
                 *
                 * @name html
                 * @type jQuery
                 * @param String val Set the html contents to the specified value.
                 * @cat DOM/Attributes
                 */
                html: "innerHTML",

                /**
                 * Get the current id of the first matched element.
                 *
                 * @example $("input").id();
                 * @before <input type="text" id="test" value="some text"/>
                 * @result "test"
                 *
                 * @test ok( $(document.getElementById('main')).id() == "main", "Check for id" );
                 * ok( $("#foo").id() == "foo", "Check for id" );
                 * ok( !$("head").id(), "Check for id" );
                 *
                 * @name id
                 * @type String
                 * @cat DOM/Attributes
                 */

                /**
                 * Set the id of every matched element.
                 *
                 * @example $("input").id("newid");
                 * @before <input type="text" id="test" value="some text"/>
                 * @result <input type="text" id="newid" value="some text"/>
                 *
                 * @name id
                 * @type jQuery
                 * @param String val Set the property to the specified value.
                 * @cat DOM/Attributes
                 */
                id: null,

                /**
                 * Get the current title of the first matched element.
                 *
                 * @example $("img").title();
                 * @before <img src="test.jpg" title="my image"/>
                 * @result "my image"
                 *
                 * @test ok( $(document.getElementById('google')).title() == "Google!", "Check for title" );
                 * ok( !$("#yahoo").title(), "Check for title" );
                 *
                 * @name title
                 * @type String
                 * @cat DOM/Attributes
                 */

                /**
                 * Set the title of every matched element.
                 *
                 * @example $("img").title("new title");
                 * @before <img src="test.jpg" title="my image"/>
                 * @result <img src="test.jpg" title="new image"/>
                 *
                 * @name title
                 * @type jQuery
                 * @param String val Set the property to the specified value.
                 * @cat DOM/Attributes
                 */
                title: null,

                /**
                 * Get the current name of the first matched element.
                 *
                 * @example $("input").name();
                 * @before <input type="text" name="username"/>
                 * @result "username"
                 *
                 * @test ok( $(document.getElementById('text1')).name() == "action", "Check for name" );
                 * ok( $("#hidden1").name() == "hidden", "Check for name" );
                 * ok( !$("#area1").name(), "Check for name" );
                 *
                 * @name name
                 * @type String
                 * @cat DOM/Attributes
                 */

                /**
                 * Set the name of every matched element.
                 *
                 * @example $("input").name("user");
                 * @before <input type="text" name="username"/>
                 * @result <input type="text" name="user"/>
                 *
                 * @name name
                 * @type jQuery
                 * @param String val Set the property to the specified value.
                 * @cat DOM/Attributes
                 */
                name: null,

                /**
                 * Get the current href of the first matched element.
                 *
                 * @example $("a").href();
                 * @before <a href="test.html">my link</a>
                 * @result "test.html"
                 *
                 * @name href
                 * @type String
                 * @cat DOM/Attributes
                 */

                /**
                 * Set the href of every matched element.
                 *
                 * @example $("a").href("test2.html");
                 * @before <a href="test.html">my link</a>
                 * @result <a href="test2.html">my link</a>
                 *
                 * @name href
                 * @type jQuery
                 * @param String val Set the property to the specified value.
                 * @cat DOM/Attributes
                 */
                href: null,

                /**
                 * Get the current src of the first matched element.
                 *
                 * @example $("img").src();
                 * @before <img src="test.jpg" title="my image"/>
                 * @result "test.jpg"
                 *
                 * @name src
                 * @type String
                 * @cat DOM/Attributes
                 */

                /**
                 * Set the src of every matched element.
                 *
                 * @example $("img").src("test2.jpg");
                 * @before <img src="test.jpg" title="my image"/>
                 * @result <img src="test2.jpg" title="my image"/>
                 *
                 * @name src
                 * @type jQuery
                 * @param String val Set the property to the specified value.
                 * @cat DOM/Attributes
                 */
                src: null,

                /**
                 * Get the current rel of the first matched element.
                 *
                 * @example $("a").rel();
                 * @before <a href="test.html" rel="nofollow">my link</a>
                 * @result "nofollow"
                 *
                 * @name rel
                 * @type String
                 * @cat DOM/Attributes
                 */

                /**
                 * Set the rel of every matched element.
                 *
                 * @example $("a").rel("nofollow");
                 * @before <a href="test.html">my link</a>
                 * @result <a href="test.html" rel="nofollow">my link</a>
                 *
                 * @name rel
                 * @type jQuery
                 * @param String val Set the property to the specified value.
                 * @cat DOM/Attributes
                 */
                rel: null
        },

        axis: {
                /**
                 * Get a set of elements containing the unique parents of the matched
                 * set of elements.
                 *
                 * @example $("p").parent()
                 * @before <div><p>Hello</p><p>Hello</p></div>
                 * @result [ <div><p>Hello</p><p>Hello</p></div> ]
                 *
                 * @name parent
                 * @type jQuery
                 * @cat DOM/Traversing
                 */

                /**
                 * Get a set of elements containing the unique parents of the matched
                 * set of elements, and filtered by an expression.
                 *
                 * @example $("p").parent(".selected")
                 * @before <div><p>Hello</p></div><div class="selected"><p>Hello Again</p></div>
                 * @result [ <div class="selected"><p>Hello Again</p></div> ]
                 *
                 * @name parent
                 * @type jQuery
                 * @param String expr An expression to filter the parents with
                 * @cat DOM/Traversing
                 */
                parent: "a.parentNode",

                /**
                 * Get a set of elements containing the unique ancestors of the matched
                 * set of elements (except for the root element).
                 *
                 * @example $("span").ancestors()
                 * @before <html><body><div><p><span>Hello</span></p><span>Hello Again</span></div></body></html>
                 * @result [ <body>...</body>, <div>...</div>, <p><span>Hello</span></p> ]
                 *
                 * @name ancestors
                 * @type jQuery
                 * @cat DOM/Traversing
                 */

                /**
                 * Get a set of elements containing the unique ancestors of the matched
                 * set of elements, and filtered by an expression.
                 *
                 * @example $("span").ancestors("p")
                 * @before <html><body><div><p><span>Hello</span></p><span>Hello Again</span></div></body></html>
                 * @result [ <p><span>Hello</span></p> ]
                 *
                 * @name ancestors
                 * @type jQuery
                 * @param String expr An expression to filter the ancestors with
                 * @cat DOM/Traversing
                 */
                ancestors: jQuery.parents,

                /**
                 * Get a set of elements containing the unique ancestors of the matched
                 * set of elements (except for the root element).
                 *
                 * @example $("span").ancestors()
                 * @before <html><body><div><p><span>Hello</span></p><span>Hello Again</span></div></body></html>
                 * @result [ <body>...</body>, <div>...</div>, <p><span>Hello</span></p> ]
                 *
                 * @name parents
                 * @type jQuery
                 * @cat DOM/Traversing
                 */

                /**
                 * Get a set of elements containing the unique ancestors of the matched
                 * set of elements, and filtered by an expression.
                 *
                 * @example $("span").ancestors("p")
                 * @before <html><body><div><p><span>Hello</span></p><span>Hello Again</span></div></body></html>
                 * @result [ <p><span>Hello</span></p> ]
                 *
                 * @name parents
                 * @type jQuery
                 * @param String expr An expression to filter the ancestors with
                 * @cat DOM/Traversing
                 */
                parents: jQuery.parents,

                /**
                 * Get a set of elements containing the unique next siblings of each of the
                 * matched set of elements.
                 *
                 * It only returns the very next sibling, not all next siblings.
                 *
                 * @example $("p").next()
                 * @before <p>Hello</p><p>Hello Again</p><div><span>And Again</span></div>
                 * @result [ <p>Hello Again</p>, <div><span>And Again</span></div> ]
                 *
                 * @name next
                 * @type jQuery
                 * @cat DOM/Traversing
                 */

                /**
                 * Get a set of elements containing the unique next siblings of each of the
                 * matched set of elements, and filtered by an expression.
                 *
                 * It only returns the very next sibling, not all next siblings.
                 *
                 * @example $("p").next(".selected")
                 * @before <p>Hello</p><p class="selected">Hello Again</p><div><span>And Again</span></div>
                 * @result [ <p class="selected">Hello Again</p> ]
                 *
                 * @name next
                 * @type jQuery
                 * @param String expr An expression to filter the next Elements with
                 * @cat DOM/Traversing
                 */
                next: "jQuery.sibling(a).next",

                /**
                 * Get a set of elements containing the unique previous siblings of each of the
                 * matched set of elements.
                 *
                 * It only returns the immediately previous sibling, not all previous siblings.
                 *
                 * @example $("p").prev()
                 * @before <p>Hello</p><div><span>Hello Again</span></div><p>And Again</p>
                 * @result [ <div><span>Hello Again</span></div> ]
                 *
                 * @name prev
                 * @type jQuery
                 * @cat DOM/Traversing
                 */

                /**
                 * Get a set of elements containing the unique previous siblings of each of the
                 * matched set of elements, and filtered by an expression.
                 *
                 * It only returns the immediately previous sibling, not all previous siblings.
                 *
                 * @example $("p").prev(".selected")
                 * @before <div><span>Hello</span></div><p class="selected">Hello Again</p><p>And Again</p>
                 * @result [ <div><span>Hello</span></div> ]
                 *
                 * @name prev
                 * @type jQuery
                 * @param String expr An expression to filter the previous Elements with
                 * @cat DOM/Traversing
                 */
                prev: "jQuery.sibling(a).prev",

                /**
                 * Get a set of elements containing all of the unique siblings of each of the
                 * matched set of elements.
                 *
                 * @example $("div").siblings()
                 * @before <p>Hello</p><div><span>Hello Again</span></div><p>And Again</p>
                 * @result [ <p>Hello</p>, <p>And Again</p> ]
                 *
                 * @test isSet( $("#en").siblings().get(), q("sndp", "sap"), "Check for siblings" ); 
                 *
                 * @name siblings
                 * @type jQuery
                 * @cat DOM/Traversing
                 */

                /**
                 * Get a set of elements containing all of the unique siblings of each of the
                 * matched set of elements, and filtered by an expression.
                 *
                 * @example $("div").siblings(".selected")
                 * @before <div><span>Hello</span></div><p class="selected">Hello Again</p><p>And Again</p>
                 * @result [ <p class="selected">Hello Again</p> ]
                 *
                 * @test isSet( $("#sndp").siblings("[code]").get(), q("sap"), "Check for filtered siblings (has code child element)" ); 
                 * isSet( $("#sndp").siblings("[a]").get(), q("en", "sap"), "Check for filtered siblings (has anchor child element)" );
                 *
                 * @name siblings
                 * @type jQuery
                 * @param String expr An expression to filter the sibling Elements with
                 * @cat DOM/Traversing
                 */
                siblings: "jQuery.sibling(a, null, true)",


                /**
                 * Get a set of elements containing all of the unique children of each of the
                 * matched set of elements.
                 *
                 * @example $("div").children()
                 * @before <p>Hello</p><div><span>Hello Again</span></div><p>And Again</p>
                 * @result [ <span>Hello Again</span> ]
                 *
                 * @test isSet( $("#foo").children().get(), q("sndp", "en", "sap"), "Check for children" );
                 *
                 * @name children
                 * @type jQuery
                 * @cat DOM/Traversing
                 */

                /**
                 * Get a set of elements containing all of the unique children of each of the
                 * matched set of elements, and filtered by an expression.
                 *
                 * @example $("div").children(".selected")
                 * @before <div><span>Hello</span><p class="selected">Hello Again</p><p>And Again</p></div>
                 * @result [ <p class="selected">Hello Again</p> ]
                 *
                 * @test isSet( $("#foo").children("[code]").get(), q("sndp", "sap"), "Check for filtered children" ); 
                 *
                 * @name children
                 * @type jQuery
                 * @param String expr An expression to filter the child Elements with
                 * @cat DOM/Traversing
                 */
                children: "jQuery.sibling(a.firstChild)"
        },

        each: {

                /**
                 * Remove an attribute from each of the matched elements.
                 *
                 * @example $("input").removeAttr("disabled")
                 * @before <input disabled="disabled"/>
                 * @result <input/>
                 *
                 * @name removeAttr
                 * @type jQuery
                 * @param String name The name of the attribute to remove.
                 * @cat DOM
                 */
                removeAttr: function( key ) {
                        this.removeAttribute( key );
                },

                /**
                 * Displays each of the set of matched elements if they are hidden.
                 *
                 * @example $("p").show()
                 * @before <p style="display: none">Hello</p>
                 * @result [ <p style="display: block">Hello</p> ]
                 *
                 * @test var pass = true, div = $("div");
                 * div.show().each(function(){
                 *   if ( this.style.display == "none" ) pass = false;
                 * });
                 * ok( pass, "Show" );
                 *
                 * @name show
                 * @type jQuery
                 * @cat Effects
                 */
                show: function(){
                        this.style.display = this.oldblock ? this.oldblock : "";
                        if ( jQuery.css(this,"display") == "none" )
                                this.style.display = "block";
                },

                /**
                 * Hides each of the set of matched elements if they are shown.
                 *
                 * @example $("p").hide()
                 * @before <p>Hello</p>
                 * @result [ <p style="display: none">Hello</p> ]
                 *
                 * var pass = true, div = $("div");
                 * div.hide().each(function(){
                 *   if ( this.style.display != "none" ) pass = false;
                 * });
                 * ok( pass, "Hide" );
                 *
                 * @name hide
                 * @type jQuery
                 * @cat Effects
                 */
                hide: function(){
                        this.oldblock = this.oldblock || jQuery.css(this,"display");
                        if ( this.oldblock == "none" )
                                this.oldblock = "block";
                        this.style.display = "none";
                },

                /**
                 * Toggles each of the set of matched elements. If they are shown,
                 * toggle makes them hidden. If they are hidden, toggle
                 * makes them shown.
                 *
                 * @example $("p").toggle()
                 * @before <p>Hello</p><p style="display: none">Hello Again</p>
                 * @result [ <p style="display: none">Hello</p>, <p style="display: block">Hello Again</p> ]
                 *
                 * @name toggle
                 * @type jQuery
                 * @cat Effects
                 */
                toggle: function(){
                        jQuery(this)[ jQuery(this).is(":hidden") ? "show" : "hide" ].apply( jQuery(this), arguments );
                },

                /**
                 * Adds the specified class to each of the set of matched elements.
                 *
                 * @example $("p").addClass("selected")
                 * @before <p>Hello</p>
                 * @result [ <p class="selected">Hello</p> ]
                 *
                 * @test var div = $("div");
                 * div.addClass("test");
                 * var pass = true;
                 * for ( var i = 0; i < div.size(); i++ ) {
                 *  if ( div.get(i).className.indexOf("test") == -1 ) pass = false;
                 * }
                 * ok( pass, "Add Class" );
                 *
                 * @name addClass
                 * @type jQuery
                 * @param String class A CSS class to add to the elements
                 * @cat DOM
                 */
                addClass: function(c){
                        jQuery.className.add(this,c);
                },

                /**
                 * Removes the specified class from the set of matched elements.
                 *
                 * @example $("p").removeClass("selected")
                 * @before <p class="selected">Hello</p>
                 * @result [ <p>Hello</p> ]
                 *
                 * @test var div = $("div").addClass("test");
                 * div.removeClass("test");
                 * var pass = true;
                 * for ( var i = 0; i < div.size(); i++ ) {
                 *  if ( div.get(i).className.indexOf("test") != -1 ) pass = false;
                 * }
                 * ok( pass, "Remove Class" );
                 * 
                 * reset();
                 *
                 * var div = $("div").addClass("test").addClass("foo").addClass("bar");
                 * div.removeClass("test").removeClass("bar").removeClass("foo");
                 * var pass = true;
                 * for ( var i = 0; i < div.size(); i++ ) {
                 *  if ( div.get(i).className.match(/test|bar|foo/) ) pass = false;
                 * }
                 * ok( pass, "Remove multiple classes" );
                 *
                 * @name removeClass
                 * @type jQuery
                 * @param String class A CSS class to remove from the elements
                 * @cat DOM
                 */
                removeClass: function(c){
                        jQuery.className.remove(this,c);
                },

                /**
                 * Adds the specified class if it is present, removes it if it is
                 * not present.
                 *
                 * @example $("p").toggleClass("selected")
                 * @before <p>Hello</p><p class="selected">Hello Again</p>
                 * @result [ <p class="selected">Hello</p>, <p>Hello Again</p> ]
                 *
                 * @name toggleClass
                 * @type jQuery
                 * @param String class A CSS class with which to toggle the elements
                 * @cat DOM
                 */
                toggleClass: function( c ){
                        jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this,c);
                },

                /**
                 * Removes all matched elements from the DOM. This does NOT remove them from the
                 * jQuery object, allowing you to use the matched elements further.
                 *
                 * @example $("p").remove();
                 * @before <p>Hello</p> how are <p>you?</p>
                 * @result how are
                 *
                 * @name remove
                 * @type jQuery
                 * @cat DOM/Manipulation
                 */

                /**
                 * Removes only elements (out of the list of matched elements) that match
                 * the specified jQuery expression. This does NOT remove them from the
                 * jQuery object, allowing you to use the matched elements further.
                 *
                 * @example $("p").remove(".hello");
                 * @before <p class="hello">Hello</p> how are <p>you?</p>
                 * @result how are <p>you?</p>
                 *
                 * @name remove
                 * @type jQuery
                 * @param String expr A jQuery expression to filter elements by.
                 * @cat DOM/Manipulation
                 */
                remove: function(a){
                        if ( !a || jQuery.filter( a, [this] ).r )
                                this.parentNode.removeChild( this );
                },

                /**
                 * Removes all child nodes from the set of matched elements.
                 *
                 * @example $("p").empty()
                 * @before <p>Hello, <span>Person</span> <a href="#">and person</a></p>
                 * @result [ <p></p> ]
                 *
                 * @name empty
                 * @type jQuery
                 * @cat DOM/Manipulation
                 */
                empty: function(){
                        while ( this.firstChild )
                                this.removeChild( this.firstChild );
                },

                /**
                 * Binds a handler to a particular event (like click) for each matched element.
                 * The event handler is passed an event object that you can use to prevent
                 * default behaviour. To stop both default action and event bubbling, your handler
                 * has to return false.
                 *
                 * @example $("p").bind( "click", function() {
                 *   alert( $(this).text() );
                 * } )
                 * @before <p>Hello</p>
                 * @result alert("Hello")
                 *
                 * @example $("form").bind( "submit", function() { return false; } )
                 * @desc Cancel a default action and prevent it from bubbling by returning false
                 * from your function.
                 *
                 * @example $("form").bind( "submit", function(event) {
                 *   event.preventDefault();
                 * } );
                 * @desc Cancel only the default action by using the preventDefault method.
                 *
                 *
                 * @example $("form").bind( "submit", function(event) {
                 *   event.stopPropagation();
                 * } )
                 * @desc Stop only an event from bubbling by using the stopPropagation method.
                 *
                 * @name bind
                 * @type jQuery
                 * @param String type An event type
                 * @param Function fn A function to bind to the event on each of the set of matched elements
                 * @cat Events
                 */
                bind: function( type, fn ) {
                        if ( fn.constructor == String )
                                fn = new Function("e", ( !fn.indexOf(".") ? "jQuery(this)" : "return " ) + fn);
                        jQuery.event.add( this, type, fn );
                },

                /**
                 * The opposite of bind, removes a bound event from each of the matched
                 * elements. You must pass the identical function that was used in the original
                 * bind method.
                 *
                 * @example $("p").unbind( "click", function() { alert("Hello"); } )
                 * @before <p onclick="alert('Hello');">Hello</p>
                 * @result [ <p>Hello</p> ]
                 *
                 * @name unbind
                 * @type jQuery
                 * @param String type An event type
                 * @param Function fn A function to unbind from the event on each of the set of matched elements
                 * @cat Events
                 */

                /**
                 * Removes all bound events of a particular type from each of the matched
                 * elements.
                 *
                 * @example $("p").unbind( "click" )
                 * @before <p onclick="alert('Hello');">Hello</p>
                 * @result [ <p>Hello</p> ]
                 *
                 * @name unbind
                 * @type jQuery
                 * @param String type An event type
                 * @cat Events
                 */

                /**
                 * Removes all bound events from each of the matched elements.
                 *
                 * @example $("p").unbind()
                 * @before <p onclick="alert('Hello');">Hello</p>
                 * @result [ <p>Hello</p> ]
                 *
                 * @name unbind
                 * @type jQuery
                 * @cat Events
                 */
                unbind: function( type, fn ) {
                        jQuery.event.remove( this, type, fn );
                },

                /**
                 * Trigger a type of event on every matched element.
                 *
                 * @example $("p").trigger("click")
                 * @before <p click="alert('hello')">Hello</p>
                 * @result alert('hello')
                 *
                 * @name trigger
                 * @type jQuery
                 * @param String type An event type to trigger.
                 * @cat Events
                 */
                trigger: function( type, data ) {
                        jQuery.event.trigger( type, data, this );
                }
        }
};

jQuery.init();