Fix for #1198

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

/*
 * jQuery @VERSION - New Wave Javascript
 *
 * Copyright (c) 2007 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
 *
 * @constructor
 * @private
 * @name jQuery
 * @param String|Function|Element|Array<Element>|jQuery a selector
 * @param jQuery|Element|Array<Element> c context
 * @cat Core
 */
var jQuery = function(a,c) {
        // If the context is global, return a new object
        if ( window == this )
                return new jQuery(a,c);
        
        return this.init(a,c);
};

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

/**
 * This function accepts a string containing a CSS or
 * basic XPath selector which is then used to match a set of elements.
 *
 * 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.
 *
 * By default, if no context is specified, $() looks for DOM elements within the context of the
 * current HTML document. If you do specify a context, such as a DOM
 * element or jQuery object, the expression will be matched against
 * the contents of that context.
 *
 * See [[DOM/Traversing/Selectors]] for the allowed CSS/XPath syntax for expressions.
 *
 * @example $("div > p")
 * @desc 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 $("input:radio", document.forms[0])
 * @desc Searches for all inputs of type radio within the first form in the 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|jQuery context (optional) A DOM Element, Document or jQuery to use as context
 * @cat Core
 * @type jQuery
 * @see $(Element)
 * @see $(Element<Array>)
 */
 
/**
 * Create DOM elements on-the-fly from the provided String of raw HTML.
 *
 * @example $("<div><p>Hello</p></div>").appendTo("body")
 * @desc Creates a div element (and all of its contents) dynamically, 
 * and appends it to the body element. Internally, an
 * element is created and its innerHTML property set to the given markup.
 * It is therefore both quite flexible and limited. 
 *
 * @name $
 * @param String html A string of HTML to create on the fly.
 * @cat Core
 * @type jQuery
 * @see appendTo(String)
 */

/**
 * Wrap jQuery functionality around a single or multiple DOM Element(s).
 *
 * This function also accepts XML Documents and Window objects
 * as valid arguments (even though they are not DOM Elements).
 *
 * @example $(document.body).css( "background", "black" );
 * @desc Sets the background color of the page to black.
 *
 * @example $( myForm.elements ).hide()
 * @desc Hides all the input elements within a form
 *
 * @name $
 * @param Element|Array<Element> elems DOM element(s) 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
 * other $() operations on your page that depend on the DOM being ready to be
 * operated on. 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.
 *
 * See ready(Function) for details about the ready event. 
 * 
 * @example $(function(){
 *   // Document is ready
 * });
 * @desc Executes the function when the DOM is ready to be used.
 *
 * @example jQuery(function($) {
 *   // Your code using failsafe $ alias here...
 * });
 * @desc Uses both the shortcut for $(document).ready() and the argument
 * to write failsafe jQuery code using the $ alias, without relying on the
 * global alias.
 *
 * @name $
 * @param Function fn The function to execute when the DOM is ready.
 * @cat Core
 * @type jQuery
 * @see ready(Function)
 */

jQuery.fn = jQuery.prototype = {
        /**
         * Initialize a new jQuery object
         *
         * @private
         * @name init
         * @param String|Function|Element|Array<Element>|jQuery a selector
         * @param jQuery|Element|Array<Element> c context
         * @cat Core
         */
        init: function(a,c) {
                // Make sure that a selection was provided
                a = a || document;

                // HANDLE: $(function)
                // Shortcut for document ready
                if ( jQuery.isFunction(a) )
                        return new jQuery(document)[ jQuery.fn.ready ? "ready" : "load" ]( a );

                // Handle HTML strings
                if ( typeof a  == "string" ) {
                        // HANDLE: $(html) -> $(array)
                        var m = /^[^<]*(<(.|\s)+>)[^>]*$/.exec(a);
                        if ( m )
                                a = jQuery.clean( [ m[1] ] );

                        // HANDLE: $(expr)
                        else
                                return new jQuery( c ).find( a );
                }

                return this.setArray(
                        // HANDLE: $(array)
                        a.constructor == Array && a ||

                        // HANDLE: $(arraylike)
                        // Watch for when an array-like object is passed as the selector
                        (a.jquery || a.length && a != window && (!a.nodeType || (jQuery.browser.msie && a.elements)) && a[0] != undefined && a[0].nodeType) && jQuery.makeArray( a ) ||

                        // HANDLE: $(*)
                        [ a ] );
        },
        
        /**
         * The current version of jQuery.
         *
         * @private
         * @property
         * @name jquery
         * @type String
         * @cat Core
         */
        jquery: "@VERSION",

        /**
         * The number of elements currently matched. The size function will return the same value.
         *
         * @example $("img").length;
         * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
         * @result 2
         *
         * @property
         * @name length
         * @type Number
         * @cat Core
         */

        /**
         * Get the number of elements currently matched. This returns the same
         * number as the 'length' property of the jQuery object.
         *
         * @example $("img").size();
         * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
         * @result 2
         *
         * @name size
         * @type Number
         * @cat Core
         */
        size: function() {
                return this.length;
        },
        
        length: 0,

        /**
         * Access all matched DOM 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).
         *
         * It is useful if you need to operate on the DOM elements themselves instead of using built-in jQuery functions.
         *
         * @example $("img").get();
         * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
         * @result [ <img src="test1.jpg"/> <img src="test2.jpg"/> ]
         * @desc Selects all images in the document and returns the DOM Elements as an Array
         *
         * @name get
         * @type Array<Element>
         * @cat Core
         */

        /**
         * Access a single matched DOM element at a specified index in the matched set.
         * This allows you to extract the actual DOM element and operate on it
         * directly without necessarily using jQuery functionality on it.
         *
         * @example $("img").get(0);
         * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
         * @result <img src="test1.jpg"/>
         * @desc Selects all images in the document and returns the first one
         *
         * @name get
         * @type Element
         * @param Number num Access the element in the Nth position.
         * @cat Core
         */
        get: function( num ) {
                return num == undefined ?

                        // Return a 'clean' array
                        jQuery.makeArray( this ) :

                        // Return just the object
                        this[num];
        },
        
        /**
         * Set the jQuery object to an array of elements, while maintaining
         * the stack.
         *
         * @example $("img").pushStack([ document.body ]);
         * @result $("img").pushStack() == [ document.body ]
         *
         * @private
         * @name pushStack
         * @type jQuery
         * @param Elements elems An array of elements
         * @cat Core
         */
        pushStack: function( a ) {
                var ret = jQuery(a);
                ret.prevObject = this;
                return ret;
        },
        
        /**
         * Set the jQuery object to an array of elements. This operation is
         * completely destructive - be sure to use .pushStack() if you wish to maintain
         * the jQuery stack.
         *
         * @example $("img").setArray([ document.body ]);
         * @result $("img").setArray() == [ document.body ]
         *
         * @private
         * @name setArray
         * @type jQuery
         * @param Elements elems An array of elements
         * @cat Core
         */
        setArray: function( a ) {
                this.length = 0;
                [].push.apply( this, a );
                return this;
        },

        /**
         * 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 DOM element.
         *
         * Additionally, the function, when executed, is passed a single
         * argument representing the position of the element in the matched
         * set (integer, zero-index).
         *
         * @example $("img").each(function(i){
         *   this.src = "test" + i + ".jpg";
         * });
         * @before <img/><img/>
         * @result <img src="test0.jpg"/><img src="test1.jpg"/>
         * @desc Iterates over two images and sets their src property
         *
         * @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( $('#foobar')[0] ) 
         * @before <div id="foobar"><b></b><span id="foo"></span></div>
         * @result 0
         * @desc Returns the index for the element with ID foobar
         *
         * @example $("*").index( $('#foo')[0] ) 
         * @before <div id="foobar"><b></b><span id="foo"></span></div>
         * @result 2
         * @desc Returns the index for the element with ID foo within another element
         *
         * @example $("*").index( $('#bar')[0] ) 
         * @before <div id="foobar"><b></b><span id="foo"></span></div>
         * @result -1
         * @desc Returns -1, as there is no element with ID bar
         *
         * @name index
         * @type Number
         * @param Element subject 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.
         *
         * If the element does not have an attribute with such a
         * name, undefined is returned.
         *
         * @example $("img").attr("src");
         * @before <img src="test.jpg"/>
         * @result test.jpg
         * @desc Returns the src attribute from the first image in the document.
         *
         * @name attr
         * @type Object
         * @param String name The name of the property to access.
         * @cat DOM/Attributes
         */

        /**
         * Set a key/value object as 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"/>
         * @desc Sets src and alt attributes to all images.
         *
         * @name attr
         * @type jQuery
         * @param Map properties Key/value pairs to set as object properties.
         * @cat DOM/Attributes
         */

        /**
         * Set a single property to a value, on all matched elements.
         *
         * Note that you can't set the name property of input elements in IE.
         * Use $(html) or .append(html) or .html(html) to create elements
         * on the fly including the name property.
         *
         * @example $("img").attr("src","test.jpg");
         * @before <img/>
         * @result <img src="test.jpg"/>
         * @desc Sets src attribute to all images.
         *
         * @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/Attributes
         */
         
        /**
         * Set a single property to a computed value, on all matched elements.
         *
         * Instead of supplying a string value as described
         * [[DOM/Attributes#attr.28_key.2C_value_.29|above]],
         * a function is provided that computes the value.
         *
         * @example $("img").attr("title", function() { return this.src });
         * @before <img src="test.jpg" />
         * @result <img src="test.jpg" title="test.jpg" />
         * @desc Sets title attribute from src attribute.
         *
         * @example $("img").attr("title", function(index) { return this.title + (i + 1); });
         * @before <img title="pic" /><img title="pic" /><img title="pic" />
         * @result <img title="pic1" /><img title="pic2" /><img title="pic3" />
         * @desc Enumerate title attribute.
         *
         * @name attr
         * @type jQuery
         * @param String key The name of the property to set.
         * @param Function value A function returning the value to set.
         *                Scope: Current element, argument: Index of current element
         * @cat DOM/Attributes
         */
        attr: function( key, value, type ) {
                var obj = key;
                
                // Look for the case where we're accessing a style value
                if ( key.constructor == String )
                        if ( value == undefined )
                                return this.length && jQuery[ type || "attr" ]( this[0], key ) || undefined;
                        else {
                                obj = {};
                                obj[ key ] = value;
                        }
                
                // Check to see if we're setting style values
                return this.each(function(index){
                        // Set all the styles
                        for ( var prop in obj )
                                jQuery.attr(
                                        type ? this.style : this,
                                        prop, jQuery.prop(this, obj[prop], type, index, prop)
                                );
                });
        },

        /**
         * 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("font-weight");
         * @before <p style="font-weight: bold;">Test Paragraph.</p>
         * @result "bold"
         * @desc Retrieves the font-weight style of the first paragraph.
         *
         * @name css
         * @type String
         * @param String name The name of the property to access.
         * @cat CSS
         */

        /**
         * Set a key/value object as 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>
         * @desc Sets color and background styles to all p elements.
         *
         * @name css
         * @type jQuery
         * @param Map properties Key/value pairs to set as style properties.
         * @cat CSS
         */

        /**
         * Set a single style property to a value, on all matched elements.
         * If a number is provided, it is automatically converted into a pixel value.
         *
         * @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
         *
         * @example $("p").css("left",30);
         * @before <p>Test Paragraph.</p>
         * @result <p style="left:30px;">Test Paragraph.</p>
         * @desc Changes the left of all paragraphs to "30px"
         *
         * @name css
         * @type jQuery
         * @param String key The name of the property to set.
         * @param String|Number value The value to set the property to.
         * @cat CSS
         */
        css: function( key, value ) {
                return this.attr( key, value, "curCSS" );
        },

        /**
         * Get 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><b>Test</b> Paragraph.</p><p>Paraparagraph</p>
         * @result Test Paragraph.Paraparagraph
         * @desc Gets the concatenated text of all paragraphs
         *
         * @name text
         * @type String
         * @cat DOM/Attributes
         */

        /**
         * Set the text contents of all matched elements.
         *
         * Similar to html(), but escapes HTML (replace "<" and ">" with their
         * HTML entities).
         *
         * @example $("p").text("<b>Some</b> new text.");
         * @before <p>Test Paragraph.</p>
         * @result <p>&lt;b&gt;Some&lt;/b&gt; new text.</p>
         * @desc Sets the text of all paragraphs.
         *
         * @example $("p").text("<b>Some</b> new text.", true);
         * @before <p>Test Paragraph.</p>
         * @result <p>Some new text.</p>
         * @desc Sets the text of all paragraphs.
         *
         * @name text
         * @type String
         * @param String val The text value to set the contents of the element to.
         * @cat DOM/Attributes
         */
        text: function(e) {
                if ( typeof e == "string" )
                        return this.empty().append( document.createTextNode( e ) );

                var t = "";
                jQuery.each( e || this, function(){
                        jQuery.each( this.childNodes, function(){
                                if ( this.nodeType != 8 )
                                        t += this.nodeType != 1 ?
                                                this.nodeValue : jQuery.fn.text([ this ]);
                        });
                });
                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>
         * 
         * @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>
         *
         * @name wrap
         * @type jQuery
         * @param Element elem A DOM element that will be wrapped around the target.
         * @cat DOM/Manipulation
         */
        wrap: function() {
                // The elements to wrap the target around
                var a, args = arguments;

                // Wrap each of the matched elements individually
                return this.each(function(){
                        if ( !a )
                                a = jQuery.clean(args, this.ownerDocument);

                        // 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 content to the inside of every matched element.
         *
         * 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>
         * @desc Appends some HTML to all paragraphs.
         *
         * @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>
         * @desc Appends an Element to all paragraphs.
         *
         * @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>
         * @desc Appends a jQuery object (similar to an Array of DOM Elements) to all paragraphs.
         *
         * @name append
         * @type jQuery
         * @param <Content> content Content to append to the target
         * @cat DOM/Manipulation
         * @see prepend(<Content>)
         * @see before(<Content>)
         * @see after(<Content>)
         */
        append: function() {
                return this.domManip(arguments, true, 1, function(a){
                        this.appendChild( a );
                });
        },

        /**
         * Prepend content to the inside of every matched element.
         *
         * This operation is the best way to insert elements
         * inside, at the beginning, of all matched elements.
         *
         * @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>
         * @desc Prepends some HTML to all paragraphs.
         *
         * @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>
         * @desc Prepends an Element to all paragraphs.
         *      
         * @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>
         * @desc Prepends a jQuery object (similar to an Array of DOM Elements) to all paragraphs.
         *
         * @name prepend
         * @type jQuery
         * @param <Content> content Content to prepend to the target.
         * @cat DOM/Manipulation
         * @see append(<Content>)
         * @see before(<Content>)
         * @see after(<Content>)
         */
        prepend: function() {
                return this.domManip(arguments, true, -1, function(a){
                        this.insertBefore( a, this.firstChild );
                });
        },
        
        /**
         * Insert content 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>
         * @desc Inserts some HTML before all paragraphs.
         *
         * @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>
         * @desc Inserts an Element before all paragraphs.
         *
         * @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>
         * @desc Inserts a jQuery object (similar to an Array of DOM Elements) before all paragraphs.
         *
         * @name before
         * @type jQuery
         * @param <Content> content Content to insert before each target.
         * @cat DOM/Manipulation
         * @see append(<Content>)
         * @see prepend(<Content>)
         * @see after(<Content>)
         */
        before: function() {
                return this.domManip(arguments, false, 1, function(a){
                        this.parentNode.insertBefore( a, this );
                });
        },

        /**
         * Insert content 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>
         * @desc Inserts some HTML after all paragraphs.
         *
         * @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>
         * @desc Inserts an Element after all paragraphs.
         *
         * @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>
         * @desc Inserts a jQuery object (similar to an Array of DOM Elements) after all paragraphs.
         *
         * @name after
         * @type jQuery
         * @param <Content> content Content to insert after each target.
         * @cat DOM/Manipulation
         * @see append(<Content>)
         * @see prepend(<Content>)
         * @see before(<Content>)
         */
        after: function() {
                return this.domManip(arguments, false, -1, function(a){
                        this.parentNode.insertBefore( a, this.nextSibling );
                });
        },

        /**
         * Revert the most recent 'destructive' operation, changing the set of matched elements
         * to its previous state (right before the destructive operation).
         *
         * If there was no destructive operation before, an empty set is returned.
         *
         * A 'destructive' operation is any operation that changes the set of
         * matched jQuery elements. These functions are: <code>add</code>,
         * <code>children</code>, <code>clone</code>, <code>filter</code>,
         * <code>find</code>, <code>not</code>, <code>next</code>,
         * <code>parent</code>, <code>parents</code>, <code>prev</code> and <code>siblings</code>.
         *
         * @example $("p").find("span").end();
         * @before <p><span>Hello</span>, how are you?</p>
         * @result [ <p>...</p> ]
         * @desc Selects all paragraphs, finds span elements inside these, and reverts the
         * selection back to the paragraphs.
         *
         * @name end
         * @type jQuery
         * @cat DOM/Traversing
         */
        end: function() {
                return this.prevObject || jQuery([]);
        },

        /**
         * Searches for all elements that match the specified expression.
         
         * This method is a good way to find 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 [ <span>Hello</span> ]
         * @desc Starts with all paragraphs and searches for descendant span
         * elements, same as $("p span")
         *
         * @name find
         * @type jQuery
         * @param String expr An expression to search with.
         * @cat DOM/Traversing
         */
        find: function(t) {
                return this.pushStack( jQuery.unique( jQuery.map( this, function(a){
                        return jQuery.find(t,a);
                }) ), t );
        },

        /**
         * Clone matched DOM Elements and select the clones. 
         *
         * 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>
         * @desc Clones all b elements (and selects the clones) and prepends them to all paragraphs.
         *
         * @name clone
         * @type jQuery
         * @param Boolean deep (Optional) Set to false if you don't want to clone all descendant nodes, in addition to the element itself.
         * @cat DOM/Manipulation
         */
        clone: function(deep) {
                // Need to remove events on the element and its descendants
                var $this = this.add(this.find("*"));
                $this.each(function() {
                        this._$events = {};
                        for (var type in this.$events)
                                this._$events[type] = jQuery.extend({},this.$events[type]);
                }).unbind();

                // Do the clone
                var r = this.pushStack( jQuery.map( this, function(a){
                        return a.cloneNode( deep != undefined ? deep : true );
                }) );

                // Add the events back to the original and its descendants
                $this.each(function() {
                        var events = this._$events;
                        for (var type in events)
                                for (var handler in events[type])
                                        jQuery.event.add(this, type, events[type][handler], events[type][handler].data);
                        this._$events = null;
                });

                // Return the cloned set
                return r;
        },

        /**
         * Removes all elements from the set of matched elements that do not
         * match the specified expression(s). This method is used to narrow down
         * the results of a search.
         *
         * Provide a comma-separated list of expressions to apply multiple filters at once.
         *
         * @example $("p").filter(".selected")
         * @before <p class="selected">Hello</p><p>How are you?</p>
         * @result [ <p class="selected">Hello</p> ]
         * @desc Selects all paragraphs and removes those without a class "selected".
         *
         * @example $("p").filter(".selected, :first")
         * @before <p>Hello</p><p>Hello Again</p><p class="selected">And Again</p>
         * @result [ <p>Hello</p>, <p class="selected">And Again</p> ]
         * @desc Selects all paragraphs and removes those without class "selected" and being the first one.
         *
         * @name filter
         * @type jQuery
         * @param String expression Expression(s) to search with.
         * @cat DOM/Traversing
         */
         
        /**
         * Removes all elements from the set of matched elements that do not
         * pass the specified filter. This method is used to narrow down
         * the results of a search.
         *
         * @example $("p").filter(function(index) {
         *   return $("ol", this).length == 0;
         * })
         * @before <p><ol><li>Hello</li></ol></p><p>How are you?</p>
         * @result [ <p>How are you?</p> ]
         * @desc Remove all elements that have a child ol element
         *
         * @name filter
         * @type jQuery
         * @param Function filter A function to use for filtering
         * @cat DOM/Traversing
         */
        filter: function(t) {
                return this.pushStack(
                        jQuery.isFunction( t ) &&
                        jQuery.grep(this, function(el, index){
                                return t.apply(el, [index])
                        }) ||

                        jQuery.multiFilter(t,this) );
        },

        /**
         * 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( $("#selected")[0] )
         * @before <p>Hello</p><p id="selected">Hello Again</p>
         * @result [ <p>Hello</p> ]
         * @desc Removes the element with the ID "selected" from the set of all paragraphs.
         *
         * @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> ]
         * @desc Removes the element with the ID "selected" from the set of all paragraphs.
         *
         * @name not
         * @type jQuery
         * @param String expr An expression with which to remove matching elements
         * @cat DOM/Traversing
         */

        /**
         * Removes any elements inside the array of elements from the set
         * of matched elements. This method is used to remove one or more
         * elements from a jQuery object.
         *
         * Please note: the expression cannot use a reference to the
         * element name. See the two examples below.
         *
         * @example $("p").not( $("div p.selected") )
         * @before <div><p>Hello</p><p class="selected">Hello Again</p></div>
         * @result [ <p>Hello</p> ]
         * @desc Removes all elements that match "div p.selected" from the total set of all paragraphs.
         *
         * @name not
         * @type jQuery
         * @param jQuery elems A set of elements to remove from the jQuery set of matched elements.
         * @cat DOM/Traversing
         */
        not: function(t) {
                return this.pushStack(
                        t.constructor == String &&
                        jQuery.multiFilter(t, this, true) ||

                        jQuery.grep(this, function(a) {
                                return ( t.constructor == Array || t.jquery )
                                        ? jQuery.inArray( a, t ) < 0
                                        : a != t;
                        })
                );
        },

        /**
         * Adds more elements, matched by the given expression,
         * to the set of matched elements.
         *
         * @example $("p").add("span")
         * @before (HTML) <p>Hello</p><span>Hello Again</span>
         * @result (jQuery object matching 2 elements) [ <p>Hello</p>, <span>Hello Again</span> ]
         * @desc Compare the above result to the result of <code>$('p')</code>,
         * which would just result in <code><nowiki>[ <p>Hello</p> ]</nowiki></code>.
         * Using add(), matched elements of <code>$('span')</code> are simply
         * added to the returned jQuery-object.
         *
         * @name add
         * @type jQuery
         * @param String expr An expression whose matched elements are added
         * @cat DOM/Traversing
         */
         
        /**
         * Adds more elements, created on the fly, to the set of
         * matched elements.
         *
         * @example $("p").add("<span>Again</span>")
         * @before <p>Hello</p>
         * @result [ <p>Hello</p>, <span>Again</span> ]
         *
         * @name add
         * @type jQuery
         * @param String html A string of HTML to create on the fly.
         * @cat DOM/Traversing
         */

        /**
         * Adds one or more Elements to the set of matched elements.
         *
         * @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> ]
         *
         * @example $("p").add( document.forms[0].elements )
         * @before <p>Hello</p><p><form><input/><button/></form>
         * @result [ <p>Hello</p>, <input/>, <button/> ]
         *
         * @name add
         * @type jQuery
         * @param Element|Array<Element> elements One or more Elements to add
         * @cat DOM/Traversing
         */
        add: function(t) {
                return this.pushStack( jQuery.merge(
                        this.get(),
                        t.constructor == String ?
                                jQuery(t).get() :
                                t.length != undefined && (!t.nodeName || t.nodeName == "FORM") ?
                                        t : [t] )
                );
        },

        /**
         * Checks the current selection against an expression and returns true,
         * if at least one element of the selection fits the given expression.
         *
         * Does return false, if no element fits or the expression is not valid.
         *
         * filter(String) is used internally, therefore all rules that apply there
         * apply here, too.
         *
         * @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
         *
         * @name is
         * @type Boolean
         * @param String expr The expression with which to filter
         * @cat DOM/Traversing
         */
        is: function(expr) {
                return expr ? jQuery.multiFilter(expr,this).length > 0 : false;
        },
        
        /**
         * Get the content of the value attribute of the first matched element.
         *
         * Use caution when relying on this function to check the value of
         * multiple-select elements and checkboxes in a form. While it will
         * still work as intended, it may not accurately represent the value
         * the server will receive because these elements may send an array
         * of values. For more robust handling of field values, see the
         * [http://www.malsup.com/jquery/form/#fields fieldValue function of the Form Plugin].
         *
         * @example $("input").val();
         * @before <input type="text" value="some text"/>
         * @result "some text"
         *
         * @name val
         * @type String
         * @cat DOM/Attributes
         */
        
        /**
         *      Set the value attribute of every matched element.
         *
         * @example $("input").val("test");
         * @before <input type="text" value="some text"/>
         * @result <input type="text" value="test"/>
         *
         * @name val
         * @type jQuery
         * @param String val Set the property to the specified value.
         * @cat DOM/Attributes
         */
        val: function( val ) {
                return val == undefined ?
                        ( this.length ? this[0].value : null ) :
                        this.attr( "value", val );
        },
        
        /**
         * Get the html contents of the first matched element.
         * This property is not available on XML documents.
         *
         * @example $("div").html();
         * @before <div><input/></div>
         * @result <input/>
         *
         * @name html
         * @type String
         * @cat DOM/Attributes
         */
        
        /**
         * Set the html contents of every matched element.
         * This property is not available on XML documents.
         *
         * @example $("div").html("<b>new stuff</b>");
         * @before <div><input/></div>
         * @result <div><b>new stuff</b></div>
         *
         * @name html
         * @type jQuery
         * @param String val Set the html contents to the specified value.
         * @cat DOM/Attributes
         */
        html: function( val ) {
                return val == undefined ?
                        ( this.length ? this[0].innerHTML : null ) :
                        this.empty().append( val );
        },
        
        /**
         * @private
         * @name domManip
         * @param Array args
         * @param Boolean table Insert TBODY in TABLEs if one is not found.
         * @param Number dir If dir<0, process args in reverse order.
         * @param Function fn The function doing the DOM manipulation.
         * @type jQuery
         * @cat Core
         */
        domManip: function(args, table, dir, fn){
                var clone = this.length > 1, a; 

                return this.each(function(){
                        if ( !a ) {
                                a = jQuery.clean(args, this.ownerDocument);
                                if ( dir < 0 )
                                        a.reverse();
                        }

                        var obj = this;

                        if ( table && jQuery.nodeName(this, "table") && jQuery.nodeName(a[0], "tr") )
                                obj = this.getElementsByTagName("tbody")[0] || this.appendChild(document.createElement("tbody"));

                        jQuery.each( a, function(){
                                fn.apply( obj, [ clone ? this.cloneNode(true) : this ] );
                        });

                });
        }
};

/**
 * Extends the jQuery object itself. Can be used to add functions into
 * the jQuery namespace and to [[Plugins/Authoring|add plugin methods]] (plugins).
 * 
 * @example jQuery.fn.extend({
 *   check: function() {
 *     return this.each(function() { this.checked = true; });
 *   },
 *   uncheck: function() {
 *     return this.each(function() { this.checked = false; });
 *   }
 * });
 * $("input[@type=checkbox]").check();
 * $("input[@type=radio]").uncheck();
 * @desc Adds two plugin methods.
 *
 * @example jQuery.extend({
 *   min: function(a, b) { return a < b ? a : b; },
 *   max: function(a, b) { return a > b ? a : b; }
 * });
 * @desc Adds two functions into the jQuery namespace
 *
 * @name $.extend
 * @param Object prop The object that will be merged into the jQuery object
 * @type Object
 * @cat Core
 */

/**
 * Extend one object with one or more others, 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" }
 * @desc Merge settings and options, modifying settings
 *
 * @example var defaults = { validate: false, limit: 5, name: "foo" };
 * var options = { validate: true, name: "bar" };
 * var settings = jQuery.extend({}, defaults, options);
 * @result settings == { validate: true, limit: 5, name: "bar" }
 * @desc Merge defaults and options, without modifying the defaults
 *
 * @name $.extend
 * @param Object target The object to extend
 * @param Object prop1 The object that will be merged into the first.
 * @param Object propN (optional) More objects to merge into the first
 * @type Object
 * @cat JavaScript
 */
jQuery.extend = jQuery.fn.extend = function() {
        // copy reference to target object
        var target = arguments[0], a = 1;

        // extend jQuery itself if only one argument is passed
        if ( arguments.length == 1 ) {
                target = this;
                a = 0;
        }
        var prop;
        while ( (prop = arguments[a++]) != null )
                // Extend the base object
                for ( var i in prop ) target[i] = prop[i];

        // Return the modified object
        return target;
};

jQuery.extend({
        /**
         * Run this function to give control of the $ variable back
         * to whichever library first implemented it. This helps to make 
         * sure that jQuery doesn't conflict with the $ object
         * of other libraries.
         *
         * By using this function, you will only be able to access jQuery
         * using the 'jQuery' variable. For example, where you used to do
         * $("div p"), you now must do jQuery("div p").
         *
         * @example jQuery.noConflict();
         * // Do something with jQuery
         * jQuery("div p").hide();
         * // Do something with another library's $()
         * $("content").style.display = 'none';
         * @desc Maps the original object that was referenced by $ back to $
         *
         * @example jQuery.noConflict();
         * (function($) { 
         *   $(function() {
         *     // more code using $ as alias to jQuery
         *   });
         * })(jQuery);
         * // other code using $ as an alias to the other library
         * @desc Reverts the $ alias and then creates and executes a
         * function to provide the $ as a jQuery alias inside the functions
         * scope. Inside the function the original $ object is not available.
         * This works well for most plugins that don't rely on any other library.
         * 
         *
         * @name $.noConflict
         * @type undefined
         * @cat Core 
         */
        noConflict: function() {
                if ( jQuery._$ )
                        $ = jQuery._$;
                return jQuery;
        },

        // This may seem like some crazy code, but trust me when I say that this
        // is the only cross-browser way to do this. --John
        isFunction: function( fn ) {
                return !!fn && typeof fn != "string" && !fn.nodeName && 
                        fn.constructor != Array && /function/i.test( fn + "" );
        },
        
        // check if an element is in a XML document
        isXMLDoc: function(elem) {
                return elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
        },

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

        /**
         * A generic iterator function, which can be used to seamlessly
         * 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.
         *
         * The callback has two arguments:the key (objects) or index (arrays) as first
         * the first, and the value as the second.
         *
         * @example $.each( [0,1,2], function(i, n){
         *   alert( "Item #" + i + ": " + n );
         * });
         * @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, n){
         *   alert( "Name: " + i + ", Value: " + n );
         * });
         *
         * @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
         */
        // args is for internal usage only
        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, ol = obj.length; i < ol; i++ )
                                if ( fn.apply( obj[i], args || [i, obj[i]] ) === false ) break;
                return obj;
        },
        
        prop: function(elem, value, type, index, prop){
                        // Handle executable functions
                        if ( jQuery.isFunction( value ) )
                                value = value.call( elem, [index] );
                                
                        // exclude the following css properties to add px
                        var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;

                        // Handle passing in a number to a CSS property
                        return value && value.constructor == Number && type == "curCSS" && !exclude.test(prop) ?
                                value + "px" :
                                value;
        },

        className: {
                // internal only, use addClass("class")
                add: function( elem, c ){
                        jQuery.each( c.split(/\s+/), function(i, cur){
                                if ( !jQuery.className.has( elem.className, cur ) )
                                        elem.className += ( elem.className ? " " : "" ) + cur;
                        });
                },

                // internal only, use removeClass("class")
                remove: function( elem, c ){
                        elem.className = c != undefined ?
                                jQuery.grep( elem.className.split(/\s+/), function(cur){
                                        return !jQuery.className.has( c, cur ); 
                                }).join(" ") : "";
                },

                // internal only, use is(".class")
                has: function( t, c ) {
                        return jQuery.inArray( c, (t.className || t).toString().split(/\s+/) ) > -1;
                }
        },

        /**
         * 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"];

                        jQuery.each( d, function(){
                                old["padding" + this] = 0;
                                old["border" + this + "Width"] = 0;
                        });

                        jQuery.swap( e, old, function() {
                                if ( jQuery(e).is(':visible') ) {
                                        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") || "static";
                                        if ( parPos == "static" )
                                                e.parentNode.style.position = "relative";

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

                                        if ( 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) {
                        ret = jQuery.attr(elem.style, "opacity");
                        return ret == "" ? "1" : ret;
                }
                
                if (prop.match(/float/i))
                        prop = jQuery.browser.msie ? "styleFloat" : "cssFloat";

                if (!force && elem.style[prop])
                        ret = elem.style[prop];

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

                        if (prop.match(/float/i))
                                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() {
                                    var c = document.defaultView.getComputedStyle(this, "");
                                    ret = c && c.getPropertyValue(prop) || "";
                                });

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

                return ret;
        },
        
        clean: function(a, doc) {
                var r = [];
                doc = doc || document;

                jQuery.each( a, function(i,arg){
                        if ( !arg ) return;

                        if ( arg.constructor == Number )
                                arg = arg.toString();
                        
                         // Convert html string into DOM nodes
                        if ( typeof arg == "string" ) {
                                // Trim whitespace, otherwise indexOf won't work as expected
                                var s = jQuery.trim(arg).toLowerCase(), div = doc.createElement("div"), tb = [];

                                var wrap =
                                         // option or optgroup
                                        !s.indexOf("<opt") &&
                                        [1, "<select>", "</select>"] ||
                                        
                                        !s.indexOf("<leg") &&
                                        [1, "<fieldset>", "</fieldset>"] ||
                                        
                                        (!s.indexOf("<thead") || !s.indexOf("<tbody") || !s.indexOf("<tfoot") || !s.indexOf("<colg")) &&
                                        [1, "<table>", "</table>"] ||
                                        
                                        !s.indexOf("<tr") &&
                                        [2, "<table><tbody>", "</tbody></table>"] ||
                                        
                                        // <thead> matched above
                                        (!s.indexOf("<td") || !s.indexOf("<th")) &&
                                        [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
                                        
                                        !s.indexOf("<col") &&
                                        [2, "<table><colgroup>", "</colgroup></table>"] ||
                                        
                                        [0,"",""];

                                // Go to html and back, then peel off extra wrappers
                                div.innerHTML = wrap[1] + arg + wrap[2];
                                
                                // Move to the right depth
                                while ( wrap[0]-- )
                                        div = div.firstChild;
                                
                                // Remove IE's autoinserted <tbody> from table fragments
                                if ( jQuery.browser.msie ) {
                                        
                                        // String was a <table>, *may* have spurious <tbody>
                                        if ( !s.indexOf("<table") && s.indexOf("<tbody") < 0 ) 
                                                tb = div.firstChild && div.firstChild.childNodes;
                                                
                                        // String was a bare <thead> or <tfoot>
                                        else if ( wrap[1] == "<table>" && s.indexOf("<tbody") < 0 )
                                                tb = div.childNodes;

                                        for ( var n = tb.length-1; n >= 0 ; --n )
                                                if ( jQuery.nodeName(tb[n], "tbody") && !tb[n].childNodes.length )
                                                        tb[n].parentNode.removeChild(tb[n]);
                                        
                                }
                                
                                arg = jQuery.makeArray( div.childNodes );
                        }

                        if ( 0 === arg.length && !jQuery(arg).is("form, select") )
                                return;

                        if ( arg[0] == undefined || jQuery.nodeName(arg, "form") || arg.options )
                                r.push( arg );
                        else
                                r = jQuery.merge( r, arg );

                });

                return r;
        },
        
        attr: function(elem, name, value){
                var fix = jQuery.isXMLDoc(elem) ? {} : {
                        "for": "htmlFor",
                        "class": "className",
                        "float": jQuery.browser.msie ? "styleFloat" : "cssFloat",
                        cssFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
                        styleFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
                        innerHTML: "innerHTML",
                        className: "className",
                        value: "value",
                        disabled: "disabled",
                        checked: "checked",
                        readonly: "readOnly",
                        selected: "selected",
                        maxlength: "maxLength"
                };
                
                // IE actually uses filters for opacity ... elem is actually elem.style
                if ( name == "opacity" && jQuery.browser.msie ) {
                        if ( value != undefined ) {
                                // IE has trouble with opacity if it does not have layout
                                // Force it by setting the zoom level
                                elem.zoom = 1; 

                                // Set the alpha filter to set the opacity
                                elem.filter = (elem.filter || "").replace(/alpha\([^)]*\)/,"") +
                                        (parseFloat(value).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
                        }

                        return elem.filter ? 
                                (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() : "";
                }
                
                // Certain attributes only work when accessed via the old DOM 0 way
                if ( fix[name] ) {
                        if ( value != undefined ) elem[fix[name]] = value;
                        return elem[fix[name]];

                } else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName(elem, "form") && (name == "action" || name == "method") )
                        return elem.getAttributeNode(name).nodeValue;

                // IE elem.getAttribute passes even for style
                else if ( elem.tagName ) {
                        if ( value != undefined ) elem.setAttribute( name, value );
                        if ( jQuery.browser.msie && /href|src/.test(name) && !jQuery.isXMLDoc(elem) ) 
                                return elem.getAttribute( name, 2 );
                        return elem.getAttribute( name );

                // elem is actually elem.style ... set the style
                } else {
                        name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
                        if ( value != undefined ) elem[name] = value;
                        return elem[name];
                }
        },
        
        /**
         * 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, "");
        },

        makeArray: function( a ) {
                var r = [];

                // Need to use typeof to fight Safari childNodes crashes
                if ( typeof a != "array" )
                        for ( var i = 0, al = a.length; i < al; i++ )
                                r.push( a[i] );
                else
                        r = a.slice( 0 );

                return r;
        },

        inArray: function( b, a ) {
                for ( var i = 0, al = a.length; i < al; i++ )
                        if ( a[i] == b )
                                return i;
                return -1;
        },

        /**
         * Merge two arrays together, removing all duplicates.
         *
         * The result is the altered first argument with
         * the unique elements from the second array added.
         *
         * @example $.merge( [0,1,2], [2,3,4] )
         * @result [0,1,2,3,4]
         * @desc Merges two arrays, removing the duplicate 2
         *
         * @example var array = [3,2,1];
         * $.merge( array, [4,3,2] )
         * @result array == [3,2,1,4]
         * @desc Merges two arrays, removing the duplicates 3 and 2
         *
         * @name $.merge
         * @type Array
         * @param Array first The first array to merge, the unique elements of second added.
         * @param Array second The second array to merge into the first, unaltered.
         * @cat JavaScript
         */
        merge: function(first, second) {
                // We have to loop this way because IE & Opera overwrite the length
                // expando of getElementsByTagName
                for ( var i = 0; second[i]; i++ )
                        first.push(second[i]);
                return first;
        },

        unique: function(first) {
                var r = [], num = jQuery.mergeNum++;

                for ( var i = 0, fl = first.length; i < fl; i++ )
                        if ( num != first[i].mergeNum ) {
                                first[i].mergeNum = num;
                                r.push(first[i]);
                        }

                return r;
        },

        mergeNum: 0,

        /**
         * 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 must return 'true' to keep the item in the array, 
         * false to remove it.
         *
         * @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 ( typeof fn == "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, el = elems.length; i < el; 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]
         * @desc Maps the original array to a new one and adds 4 to each value.
         *
         * @example $.map( [0,1,2], function(i){
         *   return i > 0 ? i + 1 : null;
         * });
         * @result [2, 3]
         * @desc Maps the original array to a new one and adds 1 to each
         * value if it is bigger then zero, otherwise it's removed-
         * 
         * @example $.map( [0,1,2], function(i){
         *   return [ i, i + 1 ];
         * });
         * @result [0, 1, 1, 2, 2, 3]
         * @desc Maps the original array to a new one, each element is added
         * with it's original value and the value plus one.
         *
         * @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 ( typeof fn == "string" )
                        fn = new Function("a","return " + fn);

                var result = [], r = [];

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

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

                return result;
        }
});

/**
 * 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.
 *
 * There are situations where object detections is not reliable enough, in that
 * cases it makes sense to use browser detection. Simply try to avoid both!
 *
 * A combination of browser and object detection yields quite reliable results.
 *
 * @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
 *
 * @property
 * @name $.browser
 * @type Boolean
 * @cat JavaScript
 */
 
/*
 * Whether the W3C compliant box model is being used.
 *
 * @property
 * @name $.boxModel
 * @type Boolean
 * @cat JavaScript
 */
new function() {
        var b = navigator.userAgent.toLowerCase();

        // Figure out what browser is being used
        jQuery.browser = {
                version: b.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/)[1],
                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";
};

/**
 * Get a set of elements containing the unique parents of the matched
 * set of elements.
 *
 * You may use an optional expression to filter the set of parent elements that will match.
 *
 * @example $("p").parent()
 * @before <div><p>Hello</p><p>Hello</p></div>
 * @result [ <div><p>Hello</p><p>Hello</p></div> ]
 * @desc Find the parent element of each paragraph.
 *
 * @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> ]
 * @desc Find the parent element of each paragraph with a class "selected".
 *
 * @name parent
 * @type jQuery
 * @param String expr (optional) An expression to filter the parents with
 * @cat DOM/Traversing
 */

/**
 * Get a set of elements containing the unique ancestors of the matched
 * set of elements (except for the root element).
 *
 * The matched elements can be filtered with an optional expression.
 *
 * @example $("span").parents()
 * @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> ]
 * @desc Find all parent elements of each span.
 *
 * @example $("span").parents("p")
 * @before <html><body><div><p><span>Hello</span></p><span>Hello Again</span></div></body></html>
 * @result [ <p><span>Hello</span></p> ]
 * @desc Find all parent elements of each span that is a paragraph.
 *
 * @name parents
 * @type jQuery
 * @param String expr (optional) An expression to filter the ancestors with
 * @cat DOM/Traversing
 */

/**
 * 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 for each element, not all
 * next siblings.
 *
 * You may provide an optional expression to filter the match.
 *
 * @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> ]
 * @desc Find the very next sibling of each paragraph.
 *
 * @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> ]
 * @desc Find the very next sibling of each paragraph that has a class "selected".
 *
 * @name next
 * @type jQuery
 * @param String expr (optional) An expression to filter the next Elements with
 * @cat DOM/Traversing
 */

/**
 * Get a set of elements containing the unique previous siblings of each of the
 * matched set of elements.
 *
 * Use an optional expression to filter the matched set.
 *
 *      Only the immediately previous sibling is returned, 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> ]
 * @desc Find the very previous sibling of each paragraph.
 *
 * @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> ]
 * @desc Find the very previous sibling of each paragraph that has a class "selected".
 *
 * @name prev
 * @type jQuery
 * @param String expr (optional) An expression to filter the previous Elements with
 * @cat DOM/Traversing
 */

/**
 * Get a set of elements containing all of the unique siblings of each of the
 * matched set of elements.
 *
 * Can be filtered with an optional expressions.
 *
 * @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> ]
 * @desc Find all siblings of each div.
 *
 * @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> ]
 * @desc Find all siblings with a class "selected" of each div.
 *
 * @name siblings
 * @type jQuery
 * @param String expr (optional) An expression to filter the sibling Elements with
 * @cat DOM/Traversing
 */

/**
 * Get a set of elements containing all of the unique children of each of the
 * matched set of elements.
 *
 * This set can be filtered with an optional expression that will cause
 * only elements matching the selector to be collected.
 *
 * @example $("div").children()
 * @before <p>Hello</p><div><span>Hello Again</span></div><p>And Again</p>
 * @result [ <span>Hello Again</span> ]
 * @desc Find all children of each div.
 *
 * @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> ]
 * @desc Find all children with a class "selected" of each div.
 *
 * @name children
 * @type jQuery
 * @param String expr (optional) An expression to filter the child Elements with
 * @cat DOM/Traversing
 */
jQuery.each({
        parent: "a.parentNode",
        parents: "jQuery.parents(a)",
        next: "jQuery.nth(a,2,'nextSibling')",
        prev: "jQuery.nth(a,2,'previousSibling')",
        siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
        children: "jQuery.sibling(a.firstChild)"
}, function(i,n){
        jQuery.fn[ i ] = function(a) {
                var ret = jQuery.map(this,n);
                if ( a && typeof a == "string" )
                        ret = jQuery.multiFilter(a,ret);
                return this.pushStack( ret );
        };
});

/**
 * 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>
 * @desc Appends all paragraphs to the element with the ID "foo"
 *
 * @name appendTo
 * @type jQuery
 * @param <Content> content Content to append to the selected element to.
 * @cat DOM/Manipulation
 * @see append(<Content>)
 */

/**
 * 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>
 * @desc Prepends all paragraphs to the element with the ID "foo"
 *
 * @name prependTo
 * @type jQuery
 * @param <Content> content Content to prepend to the selected element to.
 * @cat DOM/Manipulation
 * @see prepend(<Content>)
 */

/**
 * 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>
 * @desc Same as $("#foo").before("p")
 *
 * @name insertBefore
 * @type jQuery
 * @param <Content> content Content to insert the selected element before.
 * @cat DOM/Manipulation
 * @see before(<Content>)
 */

/**
 * 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>
 * @desc Same as $("#foo").after("p")
 *
 * @name insertAfter
 * @type jQuery
 * @param <Content> content Content to insert the selected element after.
 * @cat DOM/Manipulation
 * @see after(<Content>)
 */

jQuery.each({
        appendTo: "append",
        prependTo: "prepend",
        insertBefore: "before",
        insertAfter: "after"
}, function(i,n){
        jQuery.fn[ i ] = function(){
                var a = arguments;
                return this.each(function(){
                        for ( var j = 0, al = a.length; j < al; j++ )
                                jQuery(a[j])[n]( this );
                });
        };
});

/**
 * 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/Attributes
 */

/**
 * Adds the specified class(es) to each of the set of matched elements.
 *
 * @example $("p").addClass("selected")
 * @before <p>Hello</p>
 * @result [ <p class="selected">Hello</p> ]
 *
 * @example $("p").addClass("selected highlight")
 * @before <p>Hello</p>
 * @result [ <p class="selected highlight">Hello</p> ]
 *
 * @name addClass
 * @type jQuery
 * @param String class One or more CSS classes to add to the elements
 * @cat DOM/Attributes
 * @see removeClass(String)
 */

/**
 * Removes all or the specified class(es) from the set of matched elements.
 *
 * @example $("p").removeClass()
 * @before <p class="selected">Hello</p>
 * @result [ <p>Hello</p> ]
 *
 * @example $("p").removeClass("selected")
 * @before <p class="selected first">Hello</p>
 * @result [ <p class="first">Hello</p> ]
 *
 * @example $("p").removeClass("selected highlight")
 * @before <p class="highlight selected first">Hello</p>
 * @result [ <p class="first">Hello</p> ]
 *
 * @name removeClass
 * @type jQuery
 * @param String class (optional) One or more CSS classes to remove from the elements
 * @cat DOM/Attributes
 * @see addClass(String)
 */

/**
 * Adds the specified class if it is not present, removes it if it is
 * 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/Attributes
 */

/**
 * Removes all matched elements from the DOM. This does NOT remove them from the
 * jQuery object, allowing you to use the matched elements further.
 *
 * Can be filtered with an optional expressions.
 *
 * @example $("p").remove();
 * @before <p>Hello</p> how are <p>you?</p>
 * @result how are
 *
 * @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 (optional) A jQuery expression to filter elements by.
 * @cat DOM/Manipulation
 */

/**
 * 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
 */

jQuery.each( {
        removeAttr: function( key ) {
                jQuery.attr( this, key, "" );
                this.removeAttribute( key );
        },
        addClass: function(c){
                jQuery.className.add(this,c);
        },
        removeClass: function(c){
                jQuery.className.remove(this,c);
        },
        toggleClass: function( c ){
                jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this, c);
        },
        remove: function(a){
                if ( !a || jQuery.filter( a, [this] ).r.length )
                        this.parentNode.removeChild( this );
        },
        empty: function() {
                while ( this.firstChild )
                        this.removeChild( this.firstChild );
        }
}, function(i,n){
        jQuery.fn[ i ] = function() {
                return this.each( n, arguments );
        };
});

/**
 * 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
 */
jQuery.each( [ "eq", "lt", "gt", "contains" ], function(i,n){
        jQuery.fn[ n ] = function(num,fn) {
                return this.filter( ":" + n + "(" + num + ")", fn );
        };
});

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

/**
 * Set the CSS width of every matched element. If no explicit unit
 * was specified (like 'em' or '%') then "px" is added to the width.
 *
 * @example $("p").width(20);
 * @before <p>This is just a test.</p>
 * @result <p style="width:20px;">This is just a test.</p>
 *
 * @example $("p").width("20em");
 * @before <p>This is just a test.</p>
 * @result <p style="width:20em;">This is just a test.</p>
 *
 * @name width
 * @type jQuery
 * @param String|Number val Set the CSS property to the specified value.
 * @cat CSS
 */
 
/**
 * Get the current computed, pixel, height of the first matched element.
 *
 * @example $("p").height();
 * @before <p>This is just a test.</p>
 * @result 300
 *
 * @name height
 * @type String
 * @cat CSS
 */

/**
 * Set the CSS height of every matched element. If no explicit unit
 * was specified (like 'em' or '%') then "px" is added to the width.
 *
 * @example $("p").height(20);
 * @before <p>This is just a test.</p>
 * @result <p style="height:20px;">This is just a test.</p>
 *
 * @example $("p").height("20em");
 * @before <p>This is just a test.</p>
 * @result <p style="height:20em;">This is just a test.</p>
 *
 * @name height
 * @type jQuery
 * @param String|Number val Set the CSS property to the specified value.
 * @cat CSS
 */

jQuery.each( [ "height", "width" ], function(i,n){
        jQuery.fn[ n ] = function(h) {
                return h == undefined ?
                        ( this.length ? jQuery.css( this[0], n ) : null ) :
                        this.css( n, h.constructor == String ? h : h + "px" );
        };
});