src/jquery/jquery.js

   1 /*
   2  * jQuery @VERSION - New Wave Javascript
   3  *
   4  * Copyright (c) 2007 John Resig (jquery.com)
   5  * Dual licensed under the MIT (MIT-LICENSE.txt)
   6  * and GPL (GPL-LICENSE.txt) licenses.
   7  *
   8  * $Date$
   9  * $Rev$
  10  */
  11
  12 // Map over jQuery in case of overwrite
  13 if ( typeof jQuery != "undefined" )
  14         var _jQuery = jQuery;
  15
  16 var jQuery = window.jQuery = function(a,c) {
  17         // If the context is global, return a new object
  18         if ( window == this || !this.init )
  19                 return new jQuery(a,c);
  20
  21         return this.init(a,c);
  22 };
  23
  24 // Map over the $ in case of overwrite
  25 if ( typeof $ != "undefined" )
  26         var _$ = $;
  27
  28 // Map the jQuery namespace to the '$' one
  29 window.$ = jQuery;
  30
  31 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/;
  32
  33 jQuery.fn = jQuery.prototype = {
  34         init: function(a,c) {
  35                 // Make sure that a selection was provided
  36                 a = a || document;
  37
  38                 // Handle HTML strings
  39                 if ( typeof a  == "string" ) {
  40                         var m = quickExpr.exec(a);
  41                         if ( m && (m[1] || !c) ) {
  42                                 // HANDLE: $(html) -> $(array)
  43                                 if ( m[1] )
  44                                         a = jQuery.clean( [ m[1] ], c );
  45
  46                                 // HANDLE: $("#id")
  47                                 else {
  48                                         var tmp = document.getElementById( m[3] );
  49                                         if ( tmp )
  50                                                 // Handle the case where IE and Opera return items
  51                                                 // by name instead of ID
  52                                                 if ( tmp.id != m[3] )
  53                                                         return jQuery().find( a );
  54                                                 else {
  55                                                         this[0] = tmp;
  56                                                         this.length = 1;
  57                                                         return this;
  58                                                 }
  59                                         else
  60                                                 a = [];
  61                                 }
  62
  63                         // HANDLE: $(expr)
  64                         } else
  65                                 return new jQuery( c ).find( a );
  66
  67                 // HANDLE: $(function)
  68                 // Shortcut for document ready
  69                 } else if ( jQuery.isFunction(a) )
  70                         return new jQuery(document)[ jQuery.fn.ready ? "ready" : "load" ]( a );
  71
  72                 return this.setArray(
  73                         // HANDLE: $(array)
  74                         a.constructor == Array && a ||
  75
  76                         // HANDLE: $(arraylike)
  77                         // Watch for when an array-like object is passed as the selector
  78                         (a.jquery || a.length && a != window && !a.nodeType && a[0] != undefined && a[0].nodeType) && jQuery.makeArray( a ) ||
  79
  80                         // HANDLE: $(*)
  81                         [ a ] );
  82         },
  83
  84         jquery: "@VERSION",
  85
  86         size: function() {
  87                 return this.length;
  88         },
  89
  90         length: 0,
  91
  92         get: function( num ) {
  93                 return num == undefined ?
  94
  95                         // Return a 'clean' array
  96                         jQuery.makeArray( this ) :
  97
  98                         // Return just the object
  99                         this[num];
 100         },
 101
 102         pushStack: function( a ) {
 103                 var ret = jQuery(a);
 104                 ret.prevObject = this;
 105                 return ret;
 106         },
 107
 108         setArray: function( a ) {
 109                 this.length = 0;
 110                 Array.prototype.push.apply( this, a );
 111                 return this;
 112         },
 113
 114         each: function( fn, args ) {
 115                 return jQuery.each( this, fn, args );
 116         },
 117
 118         index: function( obj ) {
 119                 var pos = -1;
 120                 this.each(function(i){
 121                         if ( this == obj ) pos = i;
 122                 });
 123                 return pos;
 124         },
 125
 126         attr: function( key, value, type ) {
 127                 var obj = key;
 128
 129                 // Look for the case where we're accessing a style value
 130                 if ( key.constructor == String )
 131                         if ( value == undefined )
 132                                 return this.length && jQuery[ type || "attr" ]( this[0], key ) || undefined;
 133                         else {
 134                                 obj = {};
 135                                 obj[ key ] = value;
 136                         }
 137
 138                 // Check to see if we're setting style values
 139                 return this.each(function(index){
 140                         // Set all the styles
 141                         for ( var prop in obj )
 142                                 jQuery.attr(
 143                                         type ? this.style : this,
 144                                         prop, jQuery.prop(this, obj[prop], type, index, prop)
 145                                 );
 146                 });
 147         },
 148
 149         css: function( key, value ) {
 150                 return this.attr( key, value, "curCSS" );
 151         },
 152
 153         text: function(e) {
 154                 if ( typeof e != "object" && e != null )
 155                         return this.empty().append( document.createTextNode( e ) );
 156
 157                 var t = "";
 158                 jQuery.each( e || this, function(){
 159                         jQuery.each( this.childNodes, function(){
 160                                 if ( this.nodeType != 8 )
 161                                         t += this.nodeType != 1 ?
 162                                                 this.nodeValue : jQuery.fn.text([ this ]);
 163                         });
 164                 });
 165                 return t;
 166         },
 167
 168         wrapAll: function(html) {
 169                 if ( this[0] )
 170                         // The elements to wrap the target around
 171                         jQuery(html, this[0].ownerDocument)
 172                                 .clone()
 173                                 .insertBefore(this[0])
 174                                 .map(function(){
 175                                         var elem = this;
 176                                         while ( elem.firstChild )
 177                                                 elem = elem.firstChild;
 178                                         return elem;
 179                                 })
 180                                 .append(this);
 181
 182                 return this;
 183         },
 184
 185         wrapInner: function(html) {
 186                 return this.each(function(){
 187                         jQuery(this).contents().wrapAll(html);
 188                 });
 189         },
 190
 191         wrap: function(html) {
 192                 return this.each(function(){
 193                         jQuery(this).wrapAll(html);
 194                 });
 195         },
 196
 197         append: function() {
 198                 return this.domManip(arguments, true, 1, function(a){
 199                         this.appendChild( a );
 200                 });
 201         },
 202
 203         prepend: function() {
 204                 return this.domManip(arguments, true, -1, function(a){
 205                         this.insertBefore( a, this.firstChild );
 206                 });
 207         },
 208
 209         before: function() {
 210                 return this.domManip(arguments, false, 1, function(a){
 211                         this.parentNode.insertBefore( a, this );
 212                 });
 213         },
 214
 215         after: function() {
 216                 return this.domManip(arguments, false, -1, function(a){
 217                         this.parentNode.insertBefore( a, this.nextSibling );
 218                 });
 219         },
 220
 221         end: function() {
 222                 return this.prevObject || jQuery([]);
 223         },
 224
 225         find: function(t) {
 226                 var data = jQuery.map(this, function(a){ return jQuery.find(t,a); });
 227                 return this.pushStack( /[^+>] [^+>]/.test( t ) || t.indexOf("..") > -1 ?
 228                         jQuery.unique( data ) : data );
 229         },
 230
 231         clone: function() {
 232                 var $this = this.add(this.find("*"));
 233                 if (jQuery.browser.msie) {
 234                         // Need to remove events on the element and its descendants
 235                         $this.each(function() {
 236                                 this._$events = {};
 237                                 for (var type in this.$events)
 238                                         this._$events[type] = jQuery.extend({},this.$events[type]);
 239                         }).unbind();
 240                 }
 241
 242                 // Do the clone
 243                 var r = this.pushStack( jQuery.map( this, function(a){
 244                         return a.cloneNode( true );
 245                 }) );
 246
 247                 if (jQuery.browser.msie) {
 248                         $this.each(function() {
 249                                 // Add the events back to the original and its descendants
 250                                 var events = this._$events;
 251                                 for (var type in events)
 252                                         for (var handler in events[type])
 253                                                 jQuery.event.add(this, type, events[type][handler], events[type][handler].data);
 254                                 this._$events = null;
 255                         });
 256                 }
 257
 258                 // copy form values over
 259                 var inputs = r.add(r.find('*')).filter('select,input[@type=checkbox]');
 260                 $this.filter('select,input[@type=checkbox]').each(function(i) {
 261                         if (this.selectedIndex)
 262                                 inputs[i].selectedIndex = this.selectedIndex;
 263                         if (this.checked)
 264                                 inputs[i].checked = true;
 265                 });
 266
 267                 // Return the cloned set
 268                 return r;
 269         },
 270
 271         filter: function(t) {
 272                 return this.pushStack(
 273                         jQuery.isFunction( t ) &&
 274                         jQuery.grep(this, function(el, index){
 275                                 return t.apply(el, [index]);
 276                         }) ||
 277
 278                         jQuery.multiFilter(t,this) );
 279         },
 280
 281         not: function(t) {
 282                 return this.pushStack(
 283                         t.constructor == String &&
 284                         jQuery.multiFilter(t, this, true) ||
 285
 286                         jQuery.grep(this, function(a) {
 287                                 return ( t.constructor == Array || t.jquery )
 288                                         ? jQuery.inArray( a, t ) < 0
 289                                         : a != t;
 290                         })
 291                 );
 292         },
 293
 294         add: function(t) {
 295                 return this.pushStack( jQuery.merge(
 296                         this.get(),
 297                         t.constructor == String ?
 298                                 jQuery(t).get() :
 299                                 t.length != undefined && (!t.nodeName || t.nodeName == "FORM") ?
 300                                         t : [t] )
 301                 );
 302         },
 303
 304         is: function(expr) {
 305                 return expr ? jQuery.multiFilter(expr,this).length > 0 : false;
 306         },
 307
 308         val: function( val ) {
 309                 return val == undefined ?
 310                         ( this.length ? this[0].value : null ) :
 311                         this.attr( "value", val );
 312         },
 313
 314         html: function( val ) {
 315                 return val == undefined ?
 316                         ( this.length ? this[0].innerHTML : null ) :
 317                         this.empty().append( val );
 318         },
 319
 320         replaceWith: function( val ) {
 321                 return this.after( val ).remove();
 322         },
 323
 324         slice: function() {
 325                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 326         },
 327
 328         map: function(fn){
 329                 return this.pushStack(jQuery.map( this, function(elem,i){
 330                         return fn.call( elem, i, elem );
 331                 }));
 332         },
 333
 334         domManip: function(args, table, dir, fn){
 335                 var clone = this.length > 1, a;
 336
 337                 return this.each(function(){
 338                         if ( !a ) {
 339                                 a = jQuery.clean(args, this.ownerDocument);
 340                                 if ( dir < 0 )
 341                                         a.reverse();
 342                         }
 343
 344                         var obj = this;
 345
 346                         if ( table && jQuery.nodeName(this, "table") && jQuery.nodeName(a[0], "tr") )
 347                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild(document.createElement("tbody"));
 348
 349                         jQuery.each( a, function(){
 350                                 if ( jQuery.nodeName(this, "script") ) {
 351                                         if ( this.src )
 352                                                 jQuery.ajax({ url: this.src, async: false, dataType: "script" });
 353                                         else
 354                                                 jQuery.globalEval( this.text || this.textContent || this.innerHTML || "" );
 355                                 } else
 356                                         fn.apply( obj, [ clone ? this.cloneNode(true) : this ] );
 357                         });
 358                 });
 359         }
 360 };
 361
 362 jQuery.extend = jQuery.fn.extend = function() {
 363         // copy reference to target object
 364         var target = arguments[0] || {}, a = 1, al = arguments.length, deep = false;
 365
 366         // Handle a deep copy situation
 367         if ( target.constructor == Boolean ) {
 368                 deep = target;
 369                 target = arguments[1] || {};
 370         }
 371
 372         // extend jQuery itself if only one argument is passed
 373         if ( al == 1 ) {
 374                 target = this;
 375                 a = 0;
 376         }
 377
 378         var prop;
 379
 380         for ( ; a < al; a++ )
 381                 // Only deal with non-null/undefined values
 382                 if ( (prop = arguments[a]) != null )
 383                         // Extend the base object
 384                         for ( var i in prop ) {
 385                                 // Prevent never-ending loop
 386                                 if ( target == prop[i] )
 387                                         continue;
 388
 389                                 // Recurse if we're merging object values
 390                                 if ( deep && typeof prop[i] == 'object' && target[i] )
 391                                         jQuery.extend( target[i], prop[i] );
 392
 393                                 // Don't bring in undefined values
 394                                 else if ( prop[i] != undefined )
 395                                         target[i] = prop[i];
 396                         }
 397
 398         // Return the modified object
 399         return target;
 400 };
 401
 402 jQuery.extend({
 403         noConflict: function(deep) {
 404                 window.$ = _$;
 405                 if ( deep )
 406                         window.jQuery = _jQuery;
 407                 return jQuery;
 408         },
 409
 410         // This may seem like some crazy code, but trust me when I say that this
 411         // is the only cross-browser way to do this. --John
 412         isFunction: function( fn ) {
 413                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 414                         fn.constructor != Array && /function/i.test( fn + "" );
 415         },
 416
 417         // check if an element is in a XML document
 418         isXMLDoc: function(elem) {
 419                 return elem.documentElement && !elem.body ||
 420                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 421         },
 422
 423         // Evalulates a script in a global context
 424         // Evaluates Async. in Safari 2 :-(
 425         globalEval: function( data ) {
 426                 data = jQuery.trim( data );
 427                 if ( data ) {
 428                         if ( window.execScript )
 429                                 window.execScript( data );
 430                         else if ( jQuery.browser.safari )
 431                                 // safari doesn't provide a synchronous global eval
 432                                 window.setTimeout( data, 0 );
 433                         else
 434                                 eval.call( window, data );
 435                 }
 436         },
 437
 438         nodeName: function( elem, name ) {
 439                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 440         },
 441
 442         // args is for internal usage only
 443         each: function( obj, fn, args ) {
 444                 if ( args ) {
 445                         if ( obj.length == undefined )
 446                                 for ( var i in obj )
 447                                         fn.apply( obj[i], args );
 448                         else
 449                                 for ( var i = 0, ol = obj.length; i < ol; i++ )
 450                                         if ( fn.apply( obj[i], args ) === false ) break;
 451
 452                 // A special, fast, case for the most common use of each
 453                 } else {
 454                         if ( obj.length == undefined )
 455                                 for ( var i in obj )
 456                                         fn.call( obj[i], i, obj[i] );
 457                         else
 458                                 for ( var i = 0, ol = obj.length, val = obj[0];
 459                                         i < ol && fn.call(val,i,val) !== false; val = obj[++i] ){}
 460                 }
 461
 462                 return obj;
 463         },
 464
 465         prop: function(elem, value, type, index, prop){
 466                         // Handle executable functions
 467                         if ( jQuery.isFunction( value ) )
 468                                 value = value.call( elem, [index] );
 469
 470                         // exclude the following css properties to add px
 471                         var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 472
 473                         // Handle passing in a number to a CSS property
 474                         return value && value.constructor == Number && type == "curCSS" && !exclude.test(prop) ?
 475                                 value + "px" :
 476                                 value;
 477         },
 478
 479         className: {
 480                 // internal only, use addClass("class")
 481                 add: function( elem, c ){
 482                         jQuery.each( (c || "").split(/\s+/), function(i, cur){
 483                                 if ( !jQuery.className.has( elem.className, cur ) )
 484                                         elem.className += ( elem.className ? " " : "" ) + cur;
 485                         });
 486                 },
 487
 488                 // internal only, use removeClass("class")
 489                 remove: function( elem, c ){
 490                         elem.className = c != undefined ?
 491                                 jQuery.grep( elem.className.split(/\s+/), function(cur){
 492                                         return !jQuery.className.has( c, cur );
 493                                 }).join(" ") : "";
 494                 },
 495
 496                 // internal only, use is(".class")
 497                 has: function( t, c ) {
 498                         return jQuery.inArray( c, (t.className || t).toString().split(/\s+/) ) > -1;
 499                 }
 500         },
 501
 502         swap: function(e,o,f) {
 503                 for ( var i in o ) {
 504                         e.style["old"+i] = e.style[i];
 505                         e.style[i] = o[i];
 506                 }
 507                 f.apply( e, [] );
 508                 for ( var i in o )
 509                         e.style[i] = e.style["old"+i];
 510         },
 511
 512         css: function(e,p) {
 513                 if ( p == "height" || p == "width" ) {
 514                         var old = {}, oHeight, oWidth, d = ["Top","Bottom","Right","Left"];
 515
 516                         jQuery.each( d, function(){
 517                                 old["padding" + this] = 0;
 518                                 old["border" + this + "Width"] = 0;
 519                         });
 520
 521                         jQuery.swap( e, old, function() {
 522                                 if ( jQuery(e).is(':visible') ) {
 523                                         oHeight = e.offsetHeight;
 524                                         oWidth = e.offsetWidth;
 525                                 } else {
 526                                         e = jQuery(e.cloneNode(true))
 527                                                 .find(":radio").removeAttr("checked").end()
 528                                                 .css({
 529                                                         visibility: "hidden", position: "absolute", display: "block", right: "0", left: "0"
 530                                                 }).appendTo(e.parentNode)[0];
 531
 532                                         var parPos = jQuery.css(e.parentNode,"position") || "static";
 533                                         if ( parPos == "static" )
 534                                                 e.parentNode.style.position = "relative";
 535
 536                                         oHeight = e.clientHeight;
 537                                         oWidth = e.clientWidth;
 538
 539                                         if ( parPos == "static" )
 540                                                 e.parentNode.style.position = "static";
 541
 542                                         e.parentNode.removeChild(e);
 543                                 }
 544                         });
 545
 546                         return p == "height" ? oHeight : oWidth;
 547                 }
 548
 549                 return jQuery.curCSS( e, p );
 550         },
 551
 552         curCSS: function(elem, prop, force) {
 553                 var ret, stack = [], swap = [];
 554
 555                 // A helper method for determining if an element's values are broken
 556                 function color(a){
 557                         if ( !jQuery.browser.safari )
 558                                 return false;
 559
 560                         var ret = document.defaultView.getComputedStyle(a,null);
 561                         return !ret || ret.getPropertyValue("color") == "";
 562                 }
 563
 564                 if (prop == "opacity" && jQuery.browser.msie) {
 565                         ret = jQuery.attr(elem.style, "opacity");
 566                         return ret == "" ? "1" : ret;
 567                 }
 568
 569                 if (prop.match(/float/i))
 570                         prop = styleFloat;
 571
 572                 if (!force && elem.style[prop])
 573                         ret = elem.style[prop];
 574
 575                 else if (document.defaultView && document.defaultView.getComputedStyle) {
 576
 577                         if (prop.match(/float/i))
 578                                 prop = "float";
 579
 580                         prop = prop.replace(/([A-Z])/g,"-$1").toLowerCase();
 581                         var cur = document.defaultView.getComputedStyle(elem, null);
 582
 583                         if ( cur && !color(elem) )
 584                                 ret = cur.getPropertyValue(prop);
 585
 586                         // If the element isn't reporting its values properly in Safari
 587                         // then some display: none elements are involved
 588                         else {
 589                                 // Locate all of the parent display: none elements
 590                                 for ( var a = elem; a && color(a); a = a.parentNode )
 591                                         stack.unshift(a);
 592
 593                                 // Go through and make them visible, but in reverse
 594                                 // (It would be better if we knew the exact display type that they had)
 595                                 for ( a = 0; a < stack.length; a++ )
 596                                         if ( color(stack[a]) ) {
 597                                                 swap[a] = stack[a].style.display;
 598                                                 stack[a].style.display = "block";
 599                                         }
 600
 601                                 // Since we flip the display style, we have to handle that
 602                                 // one special, otherwise get the value
 603                                 ret = prop == "display" && swap[stack.length-1] != null ?
 604                                         "none" :
 605                                         document.defaultView.getComputedStyle(elem,null).getPropertyValue(prop) || "";
 606
 607                                 // Finally, revert the display styles back
 608                                 for ( a = 0; a < swap.length; a++ )
 609                                         if ( swap[a] != null )
 610                                                 stack[a].style.display = swap[a];
 611                         }
 612
 613                         if ( prop == "opacity" && ret == "" )
 614                                 ret = "1";
 615
 616                 } else if (elem.currentStyle) {
 617                         var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
 618                         ret = elem.currentStyle[prop] || elem.currentStyle[newProp];
 619                 }
 620
 621                 return ret;
 622         },
 623
 624         clean: function(a, doc) {
 625                 var r = [];
 626                 doc = doc || document;
 627
 628                 jQuery.each( a, function(i,arg){
 629                         if ( !arg ) return;
 630
 631                         if ( arg.constructor == Number )
 632                                 arg = arg.toString();
 633
 634                         // Convert html string into DOM nodes
 635                         if ( typeof arg == "string" ) {
 636                                 // Trim whitespace, otherwise indexOf won't work as expected
 637                                 var s = jQuery.trim(arg).toLowerCase(), div = doc.createElement("div"), tb = [];
 638
 639                                 var wrap =
 640                                         // option or optgroup
 641                                         !s.indexOf("<opt") &&
 642                                         [1, "<select>", "</select>"] ||
 643
 644                                         !s.indexOf("<leg") &&
 645                                         [1, "<fieldset>", "</fieldset>"] ||
 646
 647                                         s.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 648                                         [1, "<table>", "</table>"] ||
 649
 650                                         !s.indexOf("<tr") &&
 651                                         [2, "<table><tbody>", "</tbody></table>"] ||
 652
 653                                         // <thead> matched above
 654                                         (!s.indexOf("<td") || !s.indexOf("<th")) &&
 655                                         [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
 656
 657                                         !s.indexOf("<col") &&
 658                                         [2, "<table><tbody></tbody><colgroup>", "</colgroup></table>"] ||
 659
 660                                         // IE can't serialize <link> and <script> tags normally
 661                                         jQuery.browser.msie &&
 662                                         [1, "div<div>", "</div>"] ||
 663
 664                                         [0,"",""];
 665
 666                                 // Go to html and back, then peel off extra wrappers
 667                                 div.innerHTML = wrap[1] + arg + wrap[2];
 668
 669                                 // Move to the right depth
 670                                 while ( wrap[0]-- )
 671                                         div = div.lastChild;
 672
 673                                 // Remove IE's autoinserted <tbody> from table fragments
 674                                 if ( jQuery.browser.msie ) {
 675
 676                                         // String was a <table>, *may* have spurious <tbody>
 677                                         if ( !s.indexOf("<table") && s.indexOf("<tbody") < 0 )
 678                                                 tb = div.firstChild && div.firstChild.childNodes;
 679
 680                                         // String was a bare <thead> or <tfoot>
 681                                         else if ( wrap[1] == "<table>" && s.indexOf("<tbody") < 0 )
 682                                                 tb = div.childNodes;
 683
 684                                         for ( var n = tb.length-1; n >= 0 ; --n )
 685                                                 if ( jQuery.nodeName(tb[n], "tbody") && !tb[n].childNodes.length )
 686                                                         tb[n].parentNode.removeChild(tb[n]);
 687
 688                                         // IE completely kills leading whitespace when innerHTML is used
 689                                         if ( /^\s/.test(arg) )
 690                                                 div.insertBefore( doc.createTextNode( arg.match(/^\s*/)[0] ), div.firstChild );
 691
 692                                 }
 693
 694                                 arg = jQuery.makeArray( div.childNodes );
 695                         }
 696
 697                         if ( 0 === arg.length && (!jQuery.nodeName(arg, "form") && !jQuery.nodeName(arg, "select")) )
 698                                 return;
 699
 700                         if ( arg[0] == undefined || jQuery.nodeName(arg, "form") || arg.options )
 701                                 r.push( arg );
 702                         else
 703                                 r = jQuery.merge( r, arg );
 704
 705                 });
 706
 707                 return r;
 708         },
 709
 710         attr: function(elem, name, value){
 711                 var fix = jQuery.isXMLDoc(elem) ? {} : jQuery.props;
 712
 713                 // Safari mis-reports the default selected property of a hidden option
 714                 // Accessing the parent's selectedIndex property fixes it
 715                 if ( name == "selected" && jQuery.browser.safari )
 716                         elem.parentNode.selectedIndex;
 717
 718                 // Certain attributes only work when accessed via the old DOM 0 way
 719                 if ( fix[name] ) {
 720                         if ( value != undefined ) elem[fix[name]] = value;
 721                         return elem[fix[name]];
 722                 } else if ( jQuery.browser.msie && name == "style" )
 723                         return jQuery.attr( elem.style, "cssText", value );
 724
 725                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName(elem, "form") && (name == "action" || name == "method") )
 726                         return elem.getAttributeNode(name).nodeValue;
 727
 728                 // IE elem.getAttribute passes even for style
 729                 else if ( elem.tagName ) {
 730
 731                         if ( value != undefined ) elem.setAttribute( name, value );
 732                         if ( jQuery.browser.msie && /href|src/.test(name) && !jQuery.isXMLDoc(elem) )
 733                                 return elem.getAttribute( name, 2 );
 734                         return elem.getAttribute( name );
 735
 736                 // elem is actually elem.style ... set the style
 737                 } else {
 738                         // IE actually uses filters for opacity
 739                         if ( name == "opacity" && jQuery.browser.msie ) {
 740                                 if ( value != undefined ) {
 741                                         // IE has trouble with opacity if it does not have layout
 742                                         // Force it by setting the zoom level
 743                                         elem.zoom = 1;
 744
 745                                         // Set the alpha filter to set the opacity
 746                                         elem.filter = (elem.filter || "").replace(/alpha\([^)]*\)/,"") +
 747                                                 (parseFloat(value).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
 748                                 }
 749
 750                                 return elem.filter ?
 751                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() : "";
 752                         }
 753                         name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
 754                         if ( value != undefined ) elem[name] = value;
 755                         return elem[name];
 756                 }
 757         },
 758
 759         trim: function(t){
 760                 return (t||"").replace(/^\s+|\s+$/g, "");
 761         },
 762
 763         makeArray: function( a ) {
 764                 var r = [];
 765
 766                 // Need to use typeof to fight Safari childNodes crashes
 767                 if ( typeof a != "array" )
 768                         for ( var i = 0, al = a.length; i < al; i++ )
 769                                 r.push( a[i] );
 770                 else
 771                         r = a.slice( 0 );
 772
 773                 return r;
 774         },
 775
 776         inArray: function( b, a ) {
 777                 for ( var i = 0, al = a.length; i < al; i++ )
 778                         if ( a[i] == b )
 779                                 return i;
 780                 return -1;
 781         },
 782
 783         merge: function(first, second) {
 784                 // We have to loop this way because IE & Opera overwrite the length
 785                 // expando of getElementsByTagName
 786
 787                 // Also, we need to make sure that the correct elements are being returned
 788                 // (IE returns comment nodes in a '*' query)
 789                 if ( jQuery.browser.msie ) {
 790                         for ( var i = 0; second[i]; i++ )
 791                                 if ( second[i].nodeType != 8 )
 792                                         first.push(second[i]);
 793                 } else
 794                         for ( var i = 0; second[i]; i++ )
 795                                 first.push(second[i]);
 796
 797                 return first;
 798         },
 799
 800         unique: function(first) {
 801                 var r = [], num = jQuery.mergeNum++;
 802
 803                 try {
 804                         for ( var i = 0, fl = first.length; i < fl; i++ )
 805                                 if ( num != first[i].mergeNum ) {
 806                                         first[i].mergeNum = num;
 807                                         r.push(first[i]);
 808                                 }
 809                 } catch(e) {
 810                         r = first;
 811                 }
 812
 813                 return r;
 814         },
 815
 816         mergeNum: 0,
 817
 818         grep: function(elems, fn, inv) {
 819                 // If a string is passed in for the function, make a function
 820                 // for it (a handy shortcut)
 821                 if ( typeof fn == "string" )
 822                         fn = eval("false||function(a,i){return " + fn + "}");
 823
 824                 var result = [];
 825
 826                 // Go through the array, only saving the items
 827                 // that pass the validator function
 828                 for ( var i = 0, el = elems.length; i < el; i++ )
 829                         if ( !inv && fn(elems[i],i) || inv && !fn(elems[i],i) )
 830                                 result.push( elems[i] );
 831
 832                 return result;
 833         },
 834
 835         map: function(elems, fn) {
 836                 // If a string is passed in for the function, make a function
 837                 // for it (a handy shortcut)
 838                 if ( typeof fn == "string" )
 839                         fn = eval("false||function(a){return " + fn + "}");
 840
 841                 var result = [];
 842
 843                 // Go through the array, translating each of the items to their
 844                 // new value (or values).
 845                 for ( var i = 0, el = elems.length; i < el; i++ ) {
 846                         var val = fn(elems[i],i);
 847
 848                         if ( val !== null && val != undefined ) {
 849                                 if ( val.constructor != Array ) val = [val];
 850                                 result = result.concat( val );
 851                         }
 852                 }
 853
 854                 return result;
 855         }
 856 });
 857
 858 var userAgent = navigator.userAgent.toLowerCase();
 859
 860 // Figure out what browser is being used
 861 jQuery.browser = {
 862         version: (userAgent.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1],
 863         safari: /webkit/.test(userAgent),
 864         opera: /opera/.test(userAgent),
 865         msie: /msie/.test(userAgent) && !/opera/.test(userAgent),
 866         mozilla: /mozilla/.test(userAgent) && !/(compatible|webkit)/.test(userAgent)
 867 };
 868
 869 var styleFloat = jQuery.browser.msie ? "styleFloat" : "cssFloat";
 870
 871 jQuery.extend({
 872         // Check to see if the W3C box model is being used
 873         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
 874
 875         styleFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
 876
 877         props: {
 878                 "for": "htmlFor",
 879                 "class": "className",
 880                 "float": styleFloat,
 881                 cssFloat: styleFloat,
 882                 styleFloat: styleFloat,
 883                 innerHTML: "innerHTML",
 884                 className: "className",
 885                 value: "value",
 886                 disabled: "disabled",
 887                 checked: "checked",
 888                 readonly: "readOnly",
 889                 selected: "selected",
 890                 maxlength: "maxLength"
 891         }
 892 });
 893
 894 jQuery.each({
 895         parent: "a.parentNode",
 896         parents: "jQuery.parents(a)",
 897         next: "jQuery.nth(a,2,'nextSibling')",
 898         prev: "jQuery.nth(a,2,'previousSibling')",
 899         siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
 900         children: "jQuery.sibling(a.firstChild)",
 901         contents: "jQuery.nodeName(a,'iframe')?a.contentDocument||a.contentWindow.document:jQuery.makeArray(a.childNodes)"
 902 }, function(i,n){
 903         jQuery.fn[ i ] = function(a) {
 904                 var ret = jQuery.map(this,n);
 905                 if ( a && typeof a == "string" )
 906                         ret = jQuery.multiFilter(a,ret);
 907                 return this.pushStack( jQuery.unique(ret) );
 908         };
 909 });
 910
 911 jQuery.each({
 912         appendTo: "append",
 913         prependTo: "prepend",
 914         insertBefore: "before",
 915         insertAfter: "after",
 916         replaceAll: "replaceWith"
 917 }, function(i,n){
 918         jQuery.fn[ i ] = function(){
 919                 var a = arguments;
 920                 return this.each(function(){
 921                         for ( var j = 0, al = a.length; j < al; j++ )
 922                                 jQuery(a[j])[n]( this );
 923                 });
 924         };
 925 });
 926
 927 jQuery.each( {
 928         removeAttr: function( key ) {
 929                 jQuery.attr( this, key, "" );
 930                 this.removeAttribute( key );
 931         },
 932         addClass: function(c){
 933                 jQuery.className.add(this,c);
 934         },
 935         removeClass: function(c){
 936                 jQuery.className.remove(this,c);
 937         },
 938         toggleClass: function( c ){
 939                 jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this, c);
 940         },
 941         remove: function(a){
 942                 if ( !a || jQuery.filter( a, [this] ).r.length )
 943                         this.parentNode.removeChild( this );
 944         },
 945         empty: function() {
 946                 while ( this.firstChild )
 947                         this.removeChild( this.firstChild );
 948         }
 949 }, function(i,n){
 950         jQuery.fn[ i ] = function() {
 951                 return this.each( n, arguments );
 952         };
 953 });
 954
 955 jQuery.each( [ "height", "width" ], function(i,n){
 956         jQuery.fn[ n ] = function(h) {
 957                 return h == undefined ?
 958                         ( this.length ? jQuery.css( this[0], n ) : null ) :
 959                         this.css( n, h.constructor == String ? h : h + "px" );
 960         };
 961 });