src/core.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(events) {
 232                 // Do the clone
 233                 var ret = this.map(function(){
 234                         return this.outerHTML ? jQuery(this.outerHTML)[0] : this.cloneNode(true);
 235                 });
 236
 237                 // Need to set the expando to null on the cloned set if it exists
 238                 // removeData doesn't work here, IE removes it from the original as well
 239                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 240                 var clone = ret.find("*").andSelf().each(function(){
 241                         if ( this[ expando ] != undefined )
 242                                 this[ expando ] = null;
 243                 });
 244
 245                 // Copy the events from the original to the clone
 246                 if (events === true)
 247                         this.find("*").andSelf().each(function(i) {
 248                                 var events = jQuery.data(this, "events");
 249                                 for ( var type in events )
 250                                         for ( var handler in events[type] )
 251                                                 jQuery.event.add(clone[i], type, events[type][handler], events[type][handler].data);
 252                         });
 253
 254                 // Return the cloned set
 255                 return ret;
 256         },
 257
 258         filter: function(t) {
 259                 return this.pushStack(
 260                         jQuery.isFunction( t ) &&
 261                         jQuery.grep(this, function(el, index){
 262                                 return t.apply(el, [index]);
 263                         }) ||
 264
 265                         jQuery.multiFilter(t,this) );
 266         },
 267
 268         not: function(t) {
 269                 return this.pushStack(
 270                         t.constructor == String &&
 271                         jQuery.multiFilter(t, this, true) ||
 272
 273                         jQuery.grep(this, function(a) {
 274                                 return ( t.constructor == Array || t.jquery )
 275                                         ? jQuery.inArray( a, t ) < 0
 276                                         : a != t;
 277                         })
 278                 );
 279         },
 280
 281         add: function(t) {
 282                 return this.pushStack( jQuery.merge(
 283                         this.get(),
 284                         t.constructor == String ?
 285                                 jQuery(t).get() :
 286                                 t.length != undefined && (!t.nodeName || t.nodeName == "FORM") ?
 287                                         t : [t] )
 288                 );
 289         },
 290
 291         is: function(expr) {
 292                 return expr ? jQuery.multiFilter(expr,this).length > 0 : false;
 293         },
 294
 295         hasClass: function(expr) {
 296                 return this.is("." + expr);
 297         },
 298
 299         val: function( val ) {
 300                 if ( val == undefined ) {
 301                         if ( this.length ) {
 302                                 var elem = this[0];
 303
 304                                 // We need to handle select boxes special
 305                                 if ( jQuery.nodeName(elem, "select") ) {
 306                                         var index = elem.selectedIndex,
 307                                                 a = [],
 308                                                 options = elem.options,
 309                                                 one = elem.type == "select-one";
 310
 311                                         // Nothing was selected
 312                                         if ( index < 0 )
 313                                                 return null;
 314
 315                                         // Loop through all the selected options
 316                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 317                                                 var option = options[i];
 318                                                 if ( option.selected ) {
 319                                                         // Get the specifc value for the option
 320                                                         var val = jQuery.browser.msie && !option.attributes["value"].specified ? option.text : option.value;
 321
 322                                                         // We don't need an array for one selects
 323                                                         if ( one )
 324                                                                 return val;
 325
 326                                                         // Multi-Selects return an array
 327                                                         a.push(val);
 328                                                 }
 329                                         }
 330
 331                                         return a;
 332
 333                                 // Everything else, we just grab the value
 334                                 } else
 335                                         return this[0].value.replace(/\r/g, "");
 336                         }
 337                 } else
 338                         return this.each(function(){
 339                                 if ( val.constructor == Array && /radio|checkbox/.test(this.type) )
 340                                         this.checked = (jQuery.inArray(this.value, val) >= 0 ||
 341                                                 jQuery.inArray(this.name, val) >= 0);
 342                                 else if ( jQuery.nodeName(this, "select") ) {
 343                                         var tmp = val.constructor == Array ? val : [val];
 344
 345                                         jQuery("option", this).each(function(){
 346                                                 this.selected = (jQuery.inArray(this.value, tmp) >= 0 ||
 347                                                 jQuery.inArray(this.text, tmp) >= 0);
 348                                         });
 349
 350                                         if ( !tmp.length )
 351                                                 this.selectedIndex = -1;
 352                                 } else
 353                                         this.value = val;
 354                         });
 355         },
 356
 357         html: function( val ) {
 358                 return val == undefined ?
 359                         ( this.length ? this[0].innerHTML : null ) :
 360                         this.empty().append( val );
 361         },
 362
 363         replaceWith: function( val ) {
 364                 return this.after( val ).remove();
 365         },
 366
 367         slice: function() {
 368                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 369         },
 370
 371         map: function(fn) {
 372                 return this.pushStack(jQuery.map( this, function(elem,i){
 373                         return fn.call( elem, i, elem );
 374                 }));
 375         },
 376
 377         andSelf: function() {
 378                 return this.add( this.prevObject );
 379         },
 380
 381         domManip: function(args, table, dir, fn) {
 382                 var clone = this.length > 1, a;
 383
 384                 return this.each(function(){
 385                         if ( !a ) {
 386                                 a = jQuery.clean(args, this.ownerDocument);
 387                                 if ( dir < 0 )
 388                                         a.reverse();
 389                         }
 390
 391                         var obj = this;
 392
 393                         if ( table && jQuery.nodeName(this, "table") && jQuery.nodeName(a[0], "tr") )
 394                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild(document.createElement("tbody"));
 395
 396                         jQuery.each( a, function(){
 397                                 if ( jQuery.nodeName(this, "script") ) {
 398                                         if ( this.src )
 399                                                 jQuery.ajax({ url: this.src, async: false, dataType: "script" });
 400                                         else
 401                                                 jQuery.globalEval( this.text || this.textContent || this.innerHTML || "" );
 402                                 } else
 403                                         fn.apply( obj, [ clone ? this.cloneNode(true) : this ] );
 404                         });
 405                 });
 406         }
 407 };
 408
 409 jQuery.extend = jQuery.fn.extend = function() {
 410         // copy reference to target object
 411         var target = arguments[0] || {}, a = 1, al = arguments.length, deep = false;
 412
 413         // Handle a deep copy situation
 414         if ( target.constructor == Boolean ) {
 415                 deep = target;
 416                 target = arguments[1] || {};
 417         }
 418
 419         // extend jQuery itself if only one argument is passed
 420         if ( al == 1 ) {
 421                 target = this;
 422                 a = 0;
 423         }
 424
 425         var prop;
 426
 427         for ( ; a < al; a++ )
 428                 // Only deal with non-null/undefined values
 429                 if ( (prop = arguments[a]) != null )
 430                         // Extend the base object
 431                         for ( var i in prop ) {
 432                                 // Prevent never-ending loop
 433                                 if ( target == prop[i] )
 434                                         continue;
 435
 436                                 // Recurse if we're merging object values
 437                                 if ( deep && typeof prop[i] == 'object' && target[i] )
 438                                         jQuery.extend( target[i], prop[i] );
 439
 440                                 // Don't bring in undefined values
 441                                 else if ( prop[i] != undefined )
 442                                         target[i] = prop[i];
 443                         }
 444
 445         // Return the modified object
 446         return target;
 447 };
 448
 449 var expando = "jQuery" + (new Date()).getTime(), uuid = 0, win = {};
 450
 451 jQuery.extend({
 452         noConflict: function(deep) {
 453                 window.$ = _$;
 454                 if ( deep )
 455                         window.jQuery = _jQuery;
 456                 return jQuery;
 457         },
 458
 459         // This may seem like some crazy code, but trust me when I say that this
 460         // is the only cross-browser way to do this. --John
 461         isFunction: function( fn ) {
 462                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 463                         fn.constructor != Array && /function/i.test( fn + "" );
 464         },
 465
 466         // check if an element is in a XML document
 467         isXMLDoc: function(elem) {
 468                 return elem.documentElement && !elem.body ||
 469                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 470         },
 471
 472         // Evalulates a script in a global context
 473         // Evaluates Async. in Safari 2 :-(
 474         globalEval: function( data ) {
 475                 data = jQuery.trim( data );
 476                 if ( data ) {
 477                         if ( window.execScript )
 478                                 window.execScript( data );
 479                         else if ( jQuery.browser.safari )
 480                                 // safari doesn't provide a synchronous global eval
 481                                 window.setTimeout( data, 0 );
 482                         else
 483                                 eval.call( window, data );
 484                 }
 485         },
 486
 487         nodeName: function( elem, name ) {
 488                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 489         },
 490
 491         cache: {},
 492
 493         data: function( elem, name, data ) {
 494                 elem = elem == window ? win : elem;
 495
 496                 var id = elem[ expando ];
 497
 498                 // Compute a unique ID for the element
 499                 if ( !id )
 500                         id = elem[ expando ] = ++uuid;
 501
 502                 // Only generate the data cache if we're
 503                 // trying to access or manipulate it
 504                 if ( name && !jQuery.cache[ id ] )
 505                         jQuery.cache[ id ] = {};
 506
 507                 // Prevent overriding the named cache with undefined values
 508                 if ( data != undefined )
 509                         jQuery.cache[ id ][ name ] = data;
 510
 511                 // Return the named cache data, or the ID for the element
 512                 return name ? jQuery.cache[ id ][ name ] : id;
 513         },
 514
 515         removeData: function( elem, name ) {
 516                 elem = elem == window ? win : elem;
 517
 518                 var id = elem[ expando ];
 519
 520                 // If we want to remove a specific section of the element's data
 521                 if ( name ) {
 522                         if ( jQuery.cache[ id ] ) {
 523                                 // Remove the section of cache data
 524                                 delete jQuery.cache[ id ][ name ];
 525
 526                                 // If we've removed all the data, remove the element's cache
 527                                 name = "";
 528                                 for ( name in jQuery.cache[ id ] ) break;
 529                                 if ( !name )
 530                                         jQuery.removeData( elem );
 531                         }
 532
 533                 // Otherwise, we want to remove all of the element's data
 534                 } else {
 535                         // Clean up the element expando
 536                         try {
 537                                 delete elem[ expando ];
 538                         } catch(e){
 539                                 // IE has trouble directly removing the expando
 540                                 // but it's ok with using removeAttribute
 541                                 if ( elem.removeAttribute )
 542                                         elem.removeAttribute( expando );
 543                         }
 544
 545                         // Completely remove the data cache
 546                         delete jQuery.cache[ id ];
 547                 }
 548         },
 549
 550         // args is for internal usage only
 551         each: function( obj, fn, args ) {
 552                 if ( args ) {
 553                         if ( obj.length == undefined )
 554                                 for ( var i in obj )
 555                                         fn.apply( obj[i], args );
 556                         else
 557                                 for ( var i = 0, ol = obj.length; i < ol; i++ )
 558                                         if ( fn.apply( obj[i], args ) === false ) break;
 559
 560                 // A special, fast, case for the most common use of each
 561                 } else {
 562                         if ( obj.length == undefined )
 563                                 for ( var i in obj )
 564                                         fn.call( obj[i], i, obj[i] );
 565                         else
 566                                 for ( var i = 0, ol = obj.length, val = obj[0];
 567                                         i < ol && fn.call(val,i,val) !== false; val = obj[++i] ){}
 568                 }
 569
 570                 return obj;
 571         },
 572
 573         prop: function(elem, value, type, index, prop){
 574                         // Handle executable functions
 575                         if ( jQuery.isFunction( value ) )
 576                                 value = value.call( elem, [index] );
 577
 578                         // exclude the following css properties to add px
 579                         var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 580
 581                         // Handle passing in a number to a CSS property
 582                         return value && value.constructor == Number && type == "curCSS" && !exclude.test(prop) ?
 583                                 value + "px" :
 584                                 value;
 585         },
 586
 587         className: {
 588                 // internal only, use addClass("class")
 589                 add: function( elem, c ){
 590                         jQuery.each( (c || "").split(/\s+/), function(i, cur){
 591                                 if ( !jQuery.className.has( elem.className, cur ) )
 592                                         elem.className += ( elem.className ? " " : "" ) + cur;
 593                         });
 594                 },
 595
 596                 // internal only, use removeClass("class")
 597                 remove: function( elem, c ){
 598                         elem.className = c != undefined ?
 599                                 jQuery.grep( elem.className.split(/\s+/), function(cur){
 600                                         return !jQuery.className.has( c, cur );
 601                                 }).join(" ") : "";
 602                 },
 603
 604                 // internal only, use is(".class")
 605                 has: function( t, c ) {
 606                         return jQuery.inArray( c, (t.className || t).toString().split(/\s+/) ) > -1;
 607                 }
 608         },
 609
 610         swap: function(e,o,f) {
 611                 for ( var i in o ) {
 612                         e.style["old"+i] = e.style[i];
 613                         e.style[i] = o[i];
 614                 }
 615                 f.apply( e, [] );
 616                 for ( var i in o )
 617                         e.style[i] = e.style["old"+i];
 618         },
 619
 620         css: function(e,p) {
 621                 if ( p == "height" || p == "width" ) {
 622                         var old = {}, oHeight, oWidth, d = ["Top","Bottom","Right","Left"];
 623
 624                         jQuery.each( d, function(){
 625                                 old["padding" + this] = 0;
 626                                 old["border" + this + "Width"] = 0;
 627                         });
 628
 629                         jQuery.swap( e, old, function() {
 630                                 if ( jQuery(e).is(':visible') ) {
 631                                         oHeight = e.offsetHeight;
 632                                         oWidth = e.offsetWidth;
 633                                 } else {
 634                                         e = jQuery(e.cloneNode(true))
 635                                                 .find(":radio").removeAttr("checked").end()
 636                                                 .css({
 637                                                         visibility: "hidden", position: "absolute", display: "block", right: "0", left: "0"
 638                                                 }).appendTo(e.parentNode)[0];
 639
 640                                         var parPos = jQuery.css(e.parentNode,"position") || "static";
 641                                         if ( parPos == "static" )
 642                                                 e.parentNode.style.position = "relative";
 643
 644                                         oHeight = e.clientHeight;
 645                                         oWidth = e.clientWidth;
 646
 647                                         if ( parPos == "static" )
 648                                                 e.parentNode.style.position = "static";
 649
 650                                         e.parentNode.removeChild(e);
 651                                 }
 652                         });
 653
 654                         return p == "height" ? oHeight : oWidth;
 655                 }
 656
 657                 return jQuery.curCSS( e, p );
 658         },
 659
 660         curCSS: function(elem, prop, force) {
 661                 var ret, stack = [], swap = [];
 662
 663                 // A helper method for determining if an element's values are broken
 664                 function color(a){
 665                         if ( !jQuery.browser.safari )
 666                                 return false;
 667
 668                         var ret = document.defaultView.getComputedStyle(a,null);
 669                         return !ret || ret.getPropertyValue("color") == "";
 670                 }
 671
 672                 if (prop == "opacity" && jQuery.browser.msie) {
 673                         ret = jQuery.attr(elem.style, "opacity");
 674                         return ret == "" ? "1" : ret;
 675                 }
 676
 677                 if (prop.match(/float/i))
 678                         prop = styleFloat;
 679
 680                 if (!force && elem.style[prop])
 681                         ret = elem.style[prop];
 682
 683                 else if (document.defaultView && document.defaultView.getComputedStyle) {
 684
 685                         if (prop.match(/float/i))
 686                                 prop = "float";
 687
 688                         prop = prop.replace(/([A-Z])/g,"-$1").toLowerCase();
 689                         var cur = document.defaultView.getComputedStyle(elem, null);
 690
 691                         if ( cur && !color(elem) )
 692                                 ret = cur.getPropertyValue(prop);
 693
 694                         // If the element isn't reporting its values properly in Safari
 695                         // then some display: none elements are involved
 696                         else {
 697                                 // Locate all of the parent display: none elements
 698                                 for ( var a = elem; a && color(a); a = a.parentNode )
 699                                         stack.unshift(a);
 700
 701                                 // Go through and make them visible, but in reverse
 702                                 // (It would be better if we knew the exact display type that they had)
 703                                 for ( a = 0; a < stack.length; a++ )
 704                                         if ( color(stack[a]) ) {
 705                                                 swap[a] = stack[a].style.display;
 706                                                 stack[a].style.display = "block";
 707                                         }
 708
 709                                 // Since we flip the display style, we have to handle that
 710                                 // one special, otherwise get the value
 711                                 ret = prop == "display" && swap[stack.length-1] != null ?
 712                                         "none" :
 713                                         document.defaultView.getComputedStyle(elem,null).getPropertyValue(prop) || "";
 714
 715                                 // Finally, revert the display styles back
 716                                 for ( a = 0; a < swap.length; a++ )
 717                                         if ( swap[a] != null )
 718                                                 stack[a].style.display = swap[a];
 719                         }
 720
 721                         if ( prop == "opacity" && ret == "" )
 722                                 ret = "1";
 723
 724                 } else if (elem.currentStyle) {
 725                         var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
 726                         ret = elem.currentStyle[prop] || elem.currentStyle[newProp];
 727
 728                         // From the awesome hack by Dean Edwards
 729                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 730
 731                         // If we're not dealing with a regular pixel number
 732                         // but a number that has a weird ending, we need to convert it to pixels
 733                         if ( !/^\d+(px)?$/i.test(ret) && /^\d/.test(ret) ) {
 734                                 var style = elem.style.left;
 735                                 var runtimeStyle = elem.runtimeStyle.left;
 736                                 elem.runtimeStyle.left = elem.currentStyle.left;
 737                                 elem.style.left = ret || 0;
 738                                 ret = elem.style.pixelLeft + "px";
 739                                 elem.style.left = style;
 740                                 elem.runtimeStyle.left = runtimeStyle;
 741                         }
 742                 }
 743
 744                 return ret;
 745         },
 746
 747         clean: function(a, doc) {
 748                 var r = [];
 749                 doc = doc || document;
 750
 751                 jQuery.each( a, function(i,arg){
 752                         if ( !arg ) return;
 753
 754                         if ( arg.constructor == Number )
 755                                 arg = arg.toString();
 756
 757                         // Convert html string into DOM nodes
 758                         if ( typeof arg == "string" ) {
 759                                 // Fix "XHTML"-style tags in all browsers
 760                                 arg = arg.replace(/(<(\w+)[^>]*?)\/>/g, function(m, all, tag){
 761                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area)$/i)? m : all+"></"+tag+">";
 762                                 });
 763
 764                                 // Trim whitespace, otherwise indexOf won't work as expected
 765                                 var s = jQuery.trim(arg).toLowerCase(), div = doc.createElement("div"), tb = [];
 766
 767                                 var wrap =
 768                                         // option or optgroup
 769                                         !s.indexOf("<opt") &&
 770                                         [1, "<select>", "</select>"] ||
 771
 772                                         !s.indexOf("<leg") &&
 773                                         [1, "<fieldset>", "</fieldset>"] ||
 774
 775                                         s.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 776                                         [1, "<table>", "</table>"] ||
 777
 778                                         !s.indexOf("<tr") &&
 779                                         [2, "<table><tbody>", "</tbody></table>"] ||
 780
 781                                         // <thead> matched above
 782                                         (!s.indexOf("<td") || !s.indexOf("<th")) &&
 783                                         [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
 784
 785                                         !s.indexOf("<col") &&
 786                                         [2, "<table><tbody></tbody><colgroup>", "</colgroup></table>"] ||
 787
 788                                         // IE can't serialize <link> and <script> tags normally
 789                                         jQuery.browser.msie &&
 790                                         [1, "div<div>", "</div>"] ||
 791
 792                                         [0,"",""];
 793
 794                                 // Go to html and back, then peel off extra wrappers
 795                                 div.innerHTML = wrap[1] + arg + wrap[2];
 796
 797                                 // Move to the right depth
 798                                 while ( wrap[0]-- )
 799                                         div = div.lastChild;
 800
 801                                 // Remove IE's autoinserted <tbody> from table fragments
 802                                 if ( jQuery.browser.msie ) {
 803
 804                                         // String was a <table>, *may* have spurious <tbody>
 805                                         if ( !s.indexOf("<table") && s.indexOf("<tbody") < 0 )
 806                                                 tb = div.firstChild && div.firstChild.childNodes;
 807
 808                                         // String was a bare <thead> or <tfoot>
 809                                         else if ( wrap[1] == "<table>" && s.indexOf("<tbody") < 0 )
 810                                                 tb = div.childNodes;
 811
 812                                         for ( var n = tb.length-1; n >= 0 ; --n )
 813                                                 if ( jQuery.nodeName(tb[n], "tbody") && !tb[n].childNodes.length )
 814                                                         tb[n].parentNode.removeChild(tb[n]);
 815
 816                                         // IE completely kills leading whitespace when innerHTML is used
 817                                         if ( /^\s/.test(arg) )
 818                                                 div.insertBefore( doc.createTextNode( arg.match(/^\s*/)[0] ), div.firstChild );
 819
 820                                 }
 821
 822                                 arg = jQuery.makeArray( div.childNodes );
 823                         }
 824
 825                         if ( 0 === arg.length && (!jQuery.nodeName(arg, "form") && !jQuery.nodeName(arg, "select")) )
 826                                 return;
 827
 828                         if ( arg[0] == undefined || jQuery.nodeName(arg, "form") || arg.options )
 829                                 r.push( arg );
 830                         else
 831                                 r = jQuery.merge( r, arg );
 832
 833                 });
 834
 835                 return r;
 836         },
 837
 838         attr: function(elem, name, value){
 839                 var fix = jQuery.isXMLDoc(elem) ? {} : jQuery.props;
 840
 841                 // Safari mis-reports the default selected property of a hidden option
 842                 // Accessing the parent's selectedIndex property fixes it
 843                 if ( name == "selected" && jQuery.browser.safari )
 844                         elem.parentNode.selectedIndex;
 845
 846                 // Certain attributes only work when accessed via the old DOM 0 way
 847                 if ( fix[name] ) {
 848                         if ( value != undefined ) elem[fix[name]] = value;
 849                         return elem[fix[name]];
 850                 } else if ( jQuery.browser.msie && name == "style" )
 851                         return jQuery.attr( elem.style, "cssText", value );
 852
 853                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName(elem, "form") && (name == "action" || name == "method") )
 854                         return elem.getAttributeNode(name).nodeValue;
 855
 856                 // IE elem.getAttribute passes even for style
 857                 else if ( elem.tagName ) {
 858
 859                         if ( value != undefined ) {
 860                                 if ( name == "type" && jQuery.nodeName(elem,"input") && elem.parentNode )
 861                                         throw "type property can't be changed";
 862                                 elem.setAttribute( name, value );
 863                         }
 864
 865                         if ( jQuery.browser.msie && /href|src/.test(name) && !jQuery.isXMLDoc(elem) )
 866                                 return elem.getAttribute( name, 2 );
 867
 868                         return elem.getAttribute( name );
 869
 870                 // elem is actually elem.style ... set the style
 871                 } else {
 872                         // IE actually uses filters for opacity
 873                         if ( name == "opacity" && jQuery.browser.msie ) {
 874                                 if ( value != undefined ) {
 875                                         // IE has trouble with opacity if it does not have layout
 876                                         // Force it by setting the zoom level
 877                                         elem.zoom = 1;
 878
 879                                         // Set the alpha filter to set the opacity
 880                                         elem.filter = (elem.filter || "").replace(/alpha\([^)]*\)/,"") +
 881                                                 (parseFloat(value).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
 882                                 }
 883
 884                                 return elem.filter ?
 885                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() : "";
 886                         }
 887                         name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
 888                         if ( value != undefined ) elem[name] = value;
 889                         return elem[name];
 890                 }
 891         },
 892
 893         trim: function(t){
 894                 return (t||"").replace(/^\s+|\s+$/g, "");
 895         },
 896
 897         makeArray: function( a ) {
 898                 var r = [];
 899
 900                 // Need to use typeof to fight Safari childNodes crashes
 901                 if ( typeof a != "array" )
 902                         for ( var i = 0, al = a.length; i < al; i++ )
 903                                 r.push( a[i] );
 904                 else
 905                         r = a.slice( 0 );
 906
 907                 return r;
 908         },
 909
 910         inArray: function( b, a ) {
 911                 for ( var i = 0, al = a.length; i < al; i++ )
 912                         if ( a[i] == b )
 913                                 return i;
 914                 return -1;
 915         },
 916
 917         merge: function(first, second) {
 918                 // We have to loop this way because IE & Opera overwrite the length
 919                 // expando of getElementsByTagName
 920
 921                 // Also, we need to make sure that the correct elements are being returned
 922                 // (IE returns comment nodes in a '*' query)
 923                 if ( jQuery.browser.msie ) {
 924                         for ( var i = 0; second[i]; i++ )
 925                                 if ( second[i].nodeType != 8 )
 926                                         first.push(second[i]);
 927                 } else
 928                         for ( var i = 0; second[i]; i++ )
 929                                 first.push(second[i]);
 930
 931                 return first;
 932         },
 933
 934         unique: function(first) {
 935                 var r = [], done = {};
 936
 937                 try {
 938                         for ( var i = 0, fl = first.length; i < fl; i++ ) {
 939                                 var id = jQuery.data(first[i]);
 940                                 if ( !done[id] ) {
 941                                         done[id] = true;
 942                                         r.push(first[i]);
 943                                 }
 944                         }
 945                 } catch(e) {
 946                         r = first;
 947                 }
 948
 949                 return r;
 950         },
 951
 952         grep: function(elems, fn, inv) {
 953                 // If a string is passed in for the function, make a function
 954                 // for it (a handy shortcut)
 955                 if ( typeof fn == "string" )
 956                         fn = eval("false||function(a,i){return " + fn + "}");
 957
 958                 var result = [];
 959
 960                 // Go through the array, only saving the items
 961                 // that pass the validator function
 962                 for ( var i = 0, el = elems.length; i < el; i++ )
 963                         if ( !inv && fn(elems[i],i) || inv && !fn(elems[i],i) )
 964                                 result.push( elems[i] );
 965
 966                 return result;
 967         },
 968
 969         map: function(elems, fn) {
 970                 // If a string is passed in for the function, make a function
 971                 // for it (a handy shortcut)
 972                 if ( typeof fn == "string" )
 973                         fn = eval("false||function(a){return " + fn + "}");
 974
 975                 var result = [];
 976
 977                 // Go through the array, translating each of the items to their
 978                 // new value (or values).
 979                 for ( var i = 0, el = elems.length; i < el; i++ ) {
 980                         var val = fn(elems[i],i);
 981
 982                         if ( val !== null && val != undefined ) {
 983                                 if ( val.constructor != Array ) val = [val];
 984                                 result = result.concat( val );
 985                         }
 986                 }
 987
 988                 return result;
 989         }
 990 });
 991
 992 var userAgent = navigator.userAgent.toLowerCase();
 993
 994 // Figure out what browser is being used
 995 jQuery.browser = {
 996         version: (userAgent.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1],
 997         safari: /webkit/.test(userAgent),
 998         opera: /opera/.test(userAgent),
 999         msie: /msie/.test(userAgent) && !/opera/.test(userAgent),
1000         mozilla: /mozilla/.test(userAgent) && !/(compatible|webkit)/.test(userAgent)
1001 };
1002
1003 var styleFloat = jQuery.browser.msie ? "styleFloat" : "cssFloat";
1004
1005 jQuery.extend({
1006         // Check to see if the W3C box model is being used
1007         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1008
1009         styleFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
1010
1011         props: {
1012                 "for": "htmlFor",
1013                 "class": "className",
1014                 "float": styleFloat,
1015                 cssFloat: styleFloat,
1016                 styleFloat: styleFloat,
1017                 innerHTML: "innerHTML",
1018                 className: "className",
1019                 value: "value",
1020                 disabled: "disabled",
1021                 checked: "checked",
1022                 readonly: "readOnly",
1023                 selected: "selected",
1024                 maxlength: "maxLength"
1025         }
1026 });
1027
1028 jQuery.each({
1029         parent: "a.parentNode",
1030         parents: "jQuery.dir(a,'parentNode')",
1031         next: "jQuery.nth(a,2,'nextSibling')",
1032         prev: "jQuery.nth(a,2,'previousSibling')",
1033         nextAll: "jQuery.dir(a,'nextSibling')",
1034         prevAll: "jQuery.dir(a,'previousSibling')",
1035         siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
1036         children: "jQuery.sibling(a.firstChild)",
1037         contents: "jQuery.nodeName(a,'iframe')?a.contentDocument||a.contentWindow.document:jQuery.makeArray(a.childNodes)"
1038 }, function(i,n){
1039         jQuery.fn[ i ] = function(a) {
1040                 var ret = jQuery.map(this,n);
1041                 if ( a && typeof a == "string" )
1042                         ret = jQuery.multiFilter(a,ret);
1043                 return this.pushStack( jQuery.unique(ret) );
1044         };
1045 });
1046
1047 jQuery.each({
1048         appendTo: "append",
1049         prependTo: "prepend",
1050         insertBefore: "before",
1051         insertAfter: "after",
1052         replaceAll: "replaceWith"
1053 }, function(i,n){
1054         jQuery.fn[ i ] = function(){
1055                 var a = arguments;
1056                 return this.each(function(){
1057                         for ( var j = 0, al = a.length; j < al; j++ )
1058                                 jQuery(a[j])[n]( this );
1059                 });
1060         };
1061 });
1062
1063 jQuery.each( {
1064         removeAttr: function( key ) {
1065                 jQuery.attr( this, key, "" );
1066                 this.removeAttribute( key );
1067         },
1068         addClass: function(c){
1069                 jQuery.className.add(this,c);
1070         },
1071         removeClass: function(c){
1072                 jQuery.className.remove(this,c);
1073         },
1074         toggleClass: function( c ){
1075                 jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this, c);
1076         },
1077         remove: function(a){
1078                 if ( !a || jQuery.filter( a, [this] ).r.length ) {
1079                         jQuery.removeData( this );
1080                         this.parentNode.removeChild( this );
1081                 }
1082         },
1083         empty: function() {
1084                 // Clean up the cache
1085                 jQuery("*", this).each(function(){ jQuery.removeData(this); });
1086
1087                 while ( this.firstChild )
1088                         this.removeChild( this.firstChild );
1089         }
1090 }, function(i,n){
1091         jQuery.fn[ i ] = function() {
1092                 return this.each( n, arguments );
1093         };
1094 });
1095
1096 jQuery.each( [ "Height", "Width" ], function(i,name){
1097         var n = name.toLowerCase();
1098
1099         jQuery.fn[ n ] = function(h) {
1100                 return this[0] == window ?
1101                         jQuery.browser.safari && self["inner" + name] ||
1102                         jQuery.boxModel && Math.max(document.documentElement["client" + name], document.body["client" + name]) ||
1103                         document.body["client" + name] :
1104
1105                         this[0] == document ?
1106                                 Math.max( document.body["scroll" + name], document.body["offset" + name] ) :
1107
1108                                 h == undefined ?
1109                                         ( this.length ? jQuery.css( this[0], n ) : null ) :
1110                                         this.css( n, h.constructor == String ? h : h + "px" );
1111         };
1112 });