Complete overhaul of the Ajax test suite, it's now passing in all browsers. In order...
[jquery.git] / src / jquery / jquery.js
index 30396ca..b7091e2 100644 (file)
@@ -24,39 +24,10 @@ window.undefined = window.undefined;
  */
 var jQuery = function(a,c) {
        // If the context is global, return a new object
-       if ( window == this )
+       if ( window == this || !this.init )
                return new jQuery(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 && a[0] != undefined && a[0].nodeType) && jQuery.makeArray( a ) ||
-
-               // HANDLE: $(*)
-               [ a ] );
+       return this.init(a,c);
 };
 
 // Map over the $ in case of overwrite
@@ -170,6 +141,48 @@ var $ = jQuery;
 
 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 && a[0] != undefined && a[0].nodeType) && jQuery.makeArray( a ) ||
+
+                       // HANDLE: $(*)
+                       [ a ] );
+       },
+       
+       /**
         * The current version of jQuery.
         *
         * @private
@@ -552,7 +565,7 @@ jQuery.fn = jQuery.prototype = {
         * @cat DOM/Attributes
         */
        text: function(e) {
-               if ( typeof e == "string" )
+               if ( typeof e != "object" && e != null )
                        return this.empty().append( document.createTextNode( e ) );
 
                var t = "";
@@ -614,10 +627,13 @@ jQuery.fn = jQuery.prototype = {
         */
        wrap: function() {
                // The elements to wrap the target around
-               var a = jQuery.clean(arguments);
+               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);
 
@@ -795,7 +811,7 @@ jQuery.fn = jQuery.prototype = {
 
        /**
         * Searches for all elements that match the specified expression.
-        
+        * 
         * This method is a good way to find additional descendant
         * elements with which to process.
         *
@@ -814,9 +830,9 @@ jQuery.fn = jQuery.prototype = {
         * @cat DOM/Traversing
         */
        find: function(t) {
-               return this.pushStack( jQuery.map( this, function(a){
-                       return jQuery.find(t,a);
-               }), t );
+               var data = jQuery.map(this, function(a){ return jQuery.find(t,a); });
+               return this.pushStack( /[^+>] [^+>]/.test( t ) || t.indexOf("..") > -1 ?
+                       jQuery.unique( data ) : data );
        },
 
        /**
@@ -836,11 +852,46 @@ jQuery.fn = jQuery.prototype = {
         * @cat DOM/Manipulation
         */
        clone: function(deep) {
-               return this.pushStack( jQuery.map( this, function(a){
-                       var a = a.cloneNode( deep != undefined ? deep : true );
-                       a.$events = null; // drop $events expando to avoid firing incorrect events
-                       return a;
+               deep = deep != undefined ? deep : true;
+               var $this = this.add(this.find("*"));
+               if (jQuery.browser.msie) {
+                       // Need to remove events on the element and its descendants
+                       $this.each(function() {
+                               this._$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 );
                }) );
+
+               if (jQuery.browser.msie) {
+                       $this.each(function() {
+                               // Add the events back to the original and its descendants
+                               var events = this._$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;
+                       });
+               }
+
+               // copy form values over
+               if (deep) {
+                       var inputs = r.add(r.find('*')).filter('select,input[@type=checkbox]');
+                       $this.filter('select,input[@type=checkbox]').each(function(i) {
+                               if (this.selectedIndex)
+                                       inputs[i].selectedIndex = this.selectedIndex;
+                               if (this.checked)
+                                       inputs[i].checked = true;
+                       });
+               }
+
+               // Return the cloned set
+               return r;
        },
 
        /**
@@ -887,7 +938,7 @@ jQuery.fn = jQuery.prototype = {
                return this.pushStack(
                        jQuery.isFunction( t ) &&
                        jQuery.grep(this, function(el, index){
-                               return t.apply(el, [index])
+                               return t.apply(el, [index]);
                        }) ||
 
                        jQuery.multiFilter(t,this) );
@@ -1038,7 +1089,7 @@ jQuery.fn = jQuery.prototype = {
         * @cat DOM/Traversing
         */
        is: function(expr) {
-               return expr ? jQuery.filter(expr,this).r.length > 0 : false;
+               return expr ? jQuery.multiFilter(expr,this).length > 0 : false;
        },
        
        /**
@@ -1121,21 +1172,29 @@ jQuery.fn = jQuery.prototype = {
         * @cat Core
         */
        domManip: function(args, table, dir, fn){
-               var clone = this.length > 1; 
-               var a = jQuery.clean(args);
-               if ( dir < 0 )
-                       a.reverse();
+               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 ] );
+                               if ( jQuery.nodeName(this, "script") ) {
+                                       if ( this.src )
+                                               jQuery.ajax({ url: this.src, async: false, dataType: "script" });
+                                       else
+                                               jQuery.globalEval( this.text || this.textContent || this.innerHTML || "" );
+                               } else
+                                       fn.apply( obj, [ clone ? this.cloneNode(true) : this ] );
                        });
-
                });
        }
 };
@@ -1193,18 +1252,33 @@ jQuery.fn = jQuery.prototype = {
  */
 jQuery.extend = jQuery.fn.extend = function() {
        // copy reference to target object
-       var target = arguments[0],
-               a = 1;
+       var target = arguments[0] || {}, a = 1, al = arguments.length;
 
        // extend jQuery itself if only one argument is passed
-       if ( arguments.length == 1 ) {
+       if ( al == 1 ) {
                target = this;
                a = 0;
        }
+
        var prop;
-       while (prop = arguments[a++])
-               // Extend the base object
-               for ( var i in prop ) target[i] = prop[i];
+
+       for ( ; a < al; a++ )
+               // Only deal with non-null/undefined values
+               if ( (prop = arguments[a]) != null )
+                       // Extend the base object
+                       for ( var i in prop ) {
+                               // Prevent never-ending loop
+                               if ( target == prop[i] )
+                                       continue;
+
+                               // Recurse if we're merging object values
+                               if ( typeof prop[i] == 'object' && target[i] )
+                                       jQuery.extend( target[i], prop[i] );
+
+                               // Don't bring in undefined values
+                               else if ( prop[i] != undefined )
+                                       target[i] = prop[i];
+                       }
 
        // Return the modified object
        return target;
@@ -1260,7 +1334,23 @@ jQuery.extend({
        
        // check if an element is in a XML document
        isXMLDoc: function(elem) {
-               return elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
+               return elem.documentElement && !elem.body ||
+                       elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
+       },
+
+       // Evalulates a script in a global context
+       // Evaluates Async. in Safari 2 :-(
+       globalEval: function( data ) {
+               data = jQuery.trim( data );
+               if ( data ) {
+                       if ( window.execScript )
+                               window.execScript( data );
+                       else if ( jQuery.browser.safari )
+                               // safari doesn't provide a synchronous global eval
+                               window.setTimeout( data, 0 );
+                       else
+                               eval.call( window, data );
+               }
        },
 
        nodeName: function( elem, name ) {
@@ -1323,7 +1413,7 @@ jQuery.extend({
        className: {
                // internal only, use addClass("class")
                add: function( elem, c ){
-                       jQuery.each( c.split(/\s+/), function(i, cur){
+                       jQuery.each( (c || "").split(/\s+/), function(i, cur){
                                if ( !jQuery.className.has( elem.className, cur ) )
                                        elem.className += ( elem.className ? " " : "" ) + cur;
                        });
@@ -1331,7 +1421,7 @@ jQuery.extend({
 
                // internal only, use removeClass("class")
                remove: function( elem, c ){
-                       elem.className = c ?
+                       elem.className = c != undefined ?
                                jQuery.grep( elem.className.split(/\s+/), function(cur){
                                        return !jQuery.className.has( c, cur ); 
                                }).join(" ") : "";
@@ -1339,10 +1429,7 @@ jQuery.extend({
 
                // internal only, use is(".class")
                has: function( t, c ) {
-                       t = t.className || t;
-                       // escape regex characters
-                       c = c.replace(/([\.\\\+\*\?\[\^\]\$\(\)\{\}\=\!\<\>\|\:])/g, "\\$1");
-                       return t && new RegExp("(^|\\s)" + c + "(\\s|$)").test( t );
+                       return jQuery.inArray( c, (t.className || t).toString().split(/\s+/) ) > -1;
                }
        },
 
@@ -1370,7 +1457,7 @@ jQuery.extend({
                        });
 
                        jQuery.swap( e, old, function() {
-                               if (jQuery.css(e,"display") != "none") {
+                               if ( jQuery(e).is(':visible') ) {
                                        oHeight = e.offsetHeight;
                                        oWidth = e.offsetWidth;
                                } else {
@@ -1380,14 +1467,14 @@ jQuery.extend({
                                                        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" )
+                                       var parPos = jQuery.css(e.parentNode,"position") || "static";
+                                       if ( parPos == "static" )
                                                e.parentNode.style.position = "relative";
 
                                        oHeight = e.clientHeight;
                                        oWidth = e.clientWidth;
 
-                                       if ( parPos == "" || parPos == "static" )
+                                       if ( parPos == "static" )
                                                e.parentNode.style.position = "static";
 
                                        e.parentNode.removeChild(e);
@@ -1401,34 +1488,68 @@ jQuery.extend({
        },
 
        curCSS: function(elem, prop, force) {
-               var ret;
+               var ret, stack = [], swap = [];
+
+               // A helper method for determining if an element's values are broken
+               function color(a){
+                       if ( !jQuery.browser.safari )
+                               return false;
 
-               if (prop == "opacity" && jQuery.browser.msie)
-                       return jQuery.attr(elem.style, "opacity");
+                       var ret = document.defaultView.getComputedStyle(a,null);
+                       return !ret || ret.getPropertyValue("color") == "";
+               }
+
+               if (prop == "opacity" && jQuery.browser.msie) {
+                       ret = jQuery.attr(elem.style, "opacity");
+                       return ret == "" ? "1" : ret;
+               }
                
-               if (prop == "float" || prop == "cssFloat")
-                       prop = jQuery.browser.msie ? "styleFloat" : "cssFloat";
+               if (prop.match(/float/i))
+                       prop = jQuery.styleFloat;
 
                if (!force && elem.style[prop])
                        ret = elem.style[prop];
 
                else if (document.defaultView && document.defaultView.getComputedStyle) {
 
-                       if (prop == "cssFloat" || prop == "styleFloat")
+                       if (prop.match(/float/i))
                                prop = "float";
 
                        prop = prop.replace(/([A-Z])/g,"-$1").toLowerCase();
                        var cur = document.defaultView.getComputedStyle(elem, null);
 
-                       if ( cur )
+                       if ( cur && !color(elem) )
                                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) || "";
-                               });
+
+                       // If the element isn't reporting its values properly in Safari
+                       // then some display: none elements are involved
+                       else {
+                               // Locate all of the parent display: none elements
+                               for ( var a = elem; a && color(a); a = a.parentNode )
+                                       stack.unshift(a);
+
+                               // Go through and make them visible, but in reverse
+                               // (It would be better if we knew the exact display type that they had)
+                               for ( a = 0; a < stack.length; a++ )
+                                       if ( color(stack[a]) ) {
+                                               swap[a] = stack[a].style.display;
+                                               stack[a].style.display = "block";
+                                       }
+
+                               // Since we flip the display style, we have to handle that
+                               // one special, otherwise get the value
+                               ret = prop == "display" && swap[stack.length-1] != null ?
+                                       "none" :
+                                       document.defaultView.getComputedStyle(elem,null).getPropertyValue(prop) || "";
+
+                               // Finally, revert the display styles back
+                               for ( a = 0; a < swap.length; a++ )
+                                       if ( swap[a] != null )
+                                               stack[a].style.display = swap[a];
+                       }
+
+                       if ( prop == "opacity" && ret == "" )
+                               ret = "1";
 
                } else if (elem.currentStyle) {
                        var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
@@ -1438,8 +1559,9 @@ jQuery.extend({
                return ret;
        },
        
-       clean: function(a) {
+       clean: function(a, doc) {
                var r = [];
+               doc = doc || document;
 
                jQuery.each( a, function(i,arg){
                        if ( !arg ) return;
@@ -1447,17 +1569,20 @@ jQuery.extend({
                        if ( arg.constructor == Number )
                                arg = arg.toString();
                        
-                        // Convert html string into DOM nodes
+                       // Convert html string into DOM nodes
                        if ( typeof arg == "string" ) {
                                // Trim whitespace, otherwise indexOf won't work as expected
-                               var s = jQuery.trim(arg), div = document.createElement("div"), tb = [];
+                               var s = jQuery.trim(arg).toLowerCase(), div = doc.createElement("div"), tb = [];
 
                                var wrap =
-                                        // option or optgroup
+                                       // option or optgroup
                                        !s.indexOf("<opt") &&
                                        [1, "<select>", "</select>"] ||
                                        
-                                       (!s.indexOf("<thead") || !s.indexOf("<tbody") || !s.indexOf("<tfoot")) &&
+                                       !s.indexOf("<leg") &&
+                                       [1, "<fieldset>", "</fieldset>"] ||
+                                       
+                                       s.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
                                        [1, "<table>", "</table>"] ||
                                        
                                        !s.indexOf("<tr") &&
@@ -1467,6 +1592,13 @@ jQuery.extend({
                                        (!s.indexOf("<td") || !s.indexOf("<th")) &&
                                        [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
                                        
+                                       !s.indexOf("<col") &&
+                                       [2, "<table><tbody></tbody><colgroup>", "</colgroup></table>"] ||
+
+                                       // IE can't serialize <link> and <script> tags normally
+                                       jQuery.browser.msie &&
+                                       [1, "div<div>", "</div>"] ||
+                                       
                                        [0,"",""];
 
                                // Go to html and back, then peel off extra wrappers
@@ -1474,7 +1606,7 @@ jQuery.extend({
                                
                                // Move to the right depth
                                while ( wrap[0]-- )
-                                       div = div.firstChild;
+                                       div = div.lastChild;
                                
                                // Remove IE's autoinserted <tbody> from table fragments
                                if ( jQuery.browser.msie ) {
@@ -1490,16 +1622,20 @@ jQuery.extend({
                                        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]);
-                                       
+       
+                                       // IE completely kills leading whitespace when innerHTML is used        
+                                       if ( /^\s/.test(arg) )  
+                                               div.insertBefore( doc.createTextNode( arg.match(/^\s*/)[0] ), div.firstChild );
+
                                }
                                
                                arg = jQuery.makeArray( div.childNodes );
                        }
 
-                       if ( arg.length === 0 && !jQuery.nodeName(arg, "form") )
+                       if ( 0 === arg.length && (!jQuery.nodeName(arg, "form") && !jQuery.nodeName(arg, "select")) )
                                return;
-                       
-                       if ( arg[0] == undefined || jQuery.nodeName(arg, "form") )
+
+                       if ( arg[0] == undefined || jQuery.nodeName(arg, "form") || arg.options )
                                r.push( arg );
                        else
                                r = jQuery.merge( r, arg );
@@ -1510,46 +1646,26 @@ jQuery.extend({
        },
        
        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",
-                       innerHTML: "innerHTML",
-                       className: "className",
-                       value: "value",
-                       disabled: "disabled",
-                       checked: "checked",
-                       readonly: "readOnly",
-                       selected: "selected"
-               };
-               
-               // 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 + ")");
-                       }
+               var fix = jQuery.isXMLDoc(elem) ? {} : jQuery.props;
 
-                       return elem.filter ? 
-                               (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() : "1";
-               }
+               // Safari mis-reports the default selected property of a hidden option
+               // Accessing the parent's selectedIndex property fixes it
+               if ( name == "selected" && jQuery.browser.safari )
+                       elem.parentNode.selectedIndex;
                
                // 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 ( jQuery.browser.msie && name == "style" )
+                       return jQuery.attr( elem.style, "cssText", value );
 
-               } else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName(elem, "form") && (name == "action" || name == "method") )
+               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 );
@@ -1557,6 +1673,21 @@ jQuery.extend({
 
                // elem is actually elem.style ... set the style
                } else {
+                       // IE actually uses filters for opacity
+                       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() : "";
+                       }
                        name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
                        if ( value != undefined ) elem[name] = value;
                        return elem[name];
@@ -1575,7 +1706,7 @@ jQuery.extend({
         * @cat JavaScript
         */
        trim: function(t){
-               return t.replace(/^\s+|\s+$/g, "");
+               return (t||"").replace(/^\s+|\s+$/g, "");
        },
 
        makeArray: function( a ) {
@@ -1599,41 +1730,66 @@ jQuery.extend({
        },
 
        /**
-        * Merge two arrays together, removing all duplicates.
-        *
-        * The result is the altered first argument with
-        * the unique elements from the second array added.
+        * Merge two arrays together by concatenating them.
         *
         * @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
+        * @result [0,1,2,2,3,4]
+        * @desc Merges two arrays.
         *
         * @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.
+        * @param Array first The first array to merge, the elements of second are added.
+        * @param Array second The second array to append to the first, unaltered.
         * @cat JavaScript
         */
        merge: function(first, second) {
-               var r = [].slice.call( first, 0 );
-
-               // Now check for duplicates between the two arrays
-               // and only add the unique items
-               for ( var i = 0, sl = second.length; i < sl; i++ )
-                       // Check for duplicates
-                       if ( jQuery.inArray( second[i], r ) == -1 )
-                               // The item is unique, add it
-                               first.push( second[i] );
+               // We have to loop this way because IE & Opera overwrite the length
+               // expando of getElementsByTagName
+
+               // Also, we need to make sure that the correct elements are being returned
+               // (IE returns comment nodes in a '*' query)
+               if ( jQuery.browser.msie ) {
+                       for ( var i = 0; second[i]; i++ )
+                               if ( second[i].nodeType != 8 )
+                                       first.push(second[i]);
+               } else
+                       for ( var i = 0; second[i]; i++ )
+                               first.push(second[i]);
 
                return first;
        },
 
        /**
+        * Reduce an array (of jQuery objects only) to its unique elements.
+        *
+        * @example $.unique( [x1, x2, x3, x2, x3] )
+        * @result [x1, x2, x3]
+        * @desc Reduces the arrays of jQuery objects to unique elements by removing the duplicates of x2 and x3
+        *
+        * @name $.unique
+        * @type Array
+        * @param Array array The array to reduce to its unique jQuery objects.
+        * @cat JavaScript
+        */
+       unique: function(first) {
+               var r = [], num = jQuery.mergeNum++;
+
+               try {
+                       for ( var i = 0, fl = first.length; i < fl; i++ )
+                               if ( num != first[i].mergeNum ) {
+                                       first[i].mergeNum = num;
+                                       r.push(first[i]);
+                               }
+               } catch(e) {
+                       r = first;
+               }
+
+               return r;
+       },
+
+       mergeNum: 0,
+
+       /**
         * Filter items out of an array, by using a filter function.
         *
         * The specified function will be passed two arguments: The
@@ -1713,7 +1869,7 @@ jQuery.extend({
                if ( typeof fn == "string" )
                        fn = new Function("a","return " + fn);
 
-               var result = [], r = [];
+               var result = [];
 
                // Go through the array, translating each of the items to their
                // new value (or values).
@@ -1726,17 +1882,7 @@ jQuery.extend({
                        }
                }
 
-               var r = result.length ? [ result[0] ] : [];
-
-               check: for ( var i = 1, rl = result.length; i < rl; i++ ) {
-                       for ( var j = 0; j < i; j++ )
-                               if ( result[i] == r[j] )
-                                       continue check;
-
-                       r.push( result[i] );
-               }
-
-               return r;
+               return result;
        }
 });
 
@@ -1777,6 +1923,7 @@ new function() {
 
        // 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),
@@ -1785,6 +1932,25 @@ new function() {
 
        // Check to see if the W3C box model is being used
        jQuery.boxModel = !jQuery.browser.msie || document.compatMode == "CSS1Compat";
+
+       jQuery.styleFloat = jQuery.browser.msie ? "styleFloat" : "cssFloat";
+
+       jQuery.props = {
+               "for": "htmlFor",
+               "class": "className",
+               "float": jQuery.styleFloat,
+               cssFloat: jQuery.styleFloat,
+               styleFloat: jQuery.styleFloat,
+               innerHTML: "innerHTML",
+               className: "className",
+               value: "value",
+               disabled: "disabled",
+               checked: "checked",
+               readonly: "readOnly",
+               selected: "selected",
+               maxlength: "maxLength"
+       };
+
 };
 
 /**
@@ -1936,7 +2102,7 @@ jQuery.each({
                var ret = jQuery.map(this,n);
                if ( a && typeof a == "string" )
                        ret = jQuery.multiFilter(a,ret);
-               return this.pushStack( ret );
+               return this.pushStack( jQuery.unique(ret) );
        };
 });