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                                 var elem = clone ? this.cloneNode(true) : this;
 398                                 if ( !evalScript(0, elem) )
 399                                         fn.call( obj, elem );
 400                         });
 401                 });
 402         }
 403 };
 404
 405 function evalScript(i, elem){
 406         var script = jQuery.nodeName(elem, "script");
 407
 408         if ( script ) {
 409                 if ( elem.src )
 410                         jQuery.ajax({ url: elem.src, async: false, dataType: "script" });
 411                 else
 412                         jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 413
 414                 if ( elem.parentNode )
 415                         elem.parentNode.removeChild(elem);
 416
 417         } else if ( elem.nodeType == 1 )
 418     jQuery("script", elem).each(evalScript);
 419
 420         return script;
 421 }
 422
 423 jQuery.extend = jQuery.fn.extend = function() {
 424         // copy reference to target object
 425         var target = arguments[0] || {}, a = 1, al = arguments.length, deep = false;
 426
 427         // Handle a deep copy situation
 428         if ( target.constructor == Boolean ) {
 429                 deep = target;
 430                 target = arguments[1] || {};
 431         }
 432
 433         // extend jQuery itself if only one argument is passed
 434         if ( al == 1 ) {
 435                 target = this;
 436                 a = 0;
 437         }
 438
 439         var prop;
 440
 441         for ( ; a < al; a++ )
 442                 // Only deal with non-null/undefined values
 443                 if ( (prop = arguments[a]) != null )
 444                         // Extend the base object
 445                         for ( var i in prop ) {
 446                                 // Prevent never-ending loop
 447                                 if ( target == prop[i] )
 448                                         continue;
 449
 450                                 // Recurse if we're merging object values
 451                                 if ( deep && typeof prop[i] == 'object' && target[i] )
 452                                         jQuery.extend( target[i], prop[i] );
 453
 454                                 // Don't bring in undefined values
 455                                 else if ( prop[i] != undefined )
 456                                         target[i] = prop[i];
 457                         }
 458
 459         // Return the modified object
 460         return target;
 461 };
 462
 463 var expando = "jQuery" + (new Date()).getTime(), uuid = 0, win = {};
 464
 465 jQuery.extend({
 466         noConflict: function(deep) {
 467                 window.$ = _$;
 468                 if ( deep )
 469                         window.jQuery = _jQuery;
 470                 return jQuery;
 471         },
 472
 473         // This may seem like some crazy code, but trust me when I say that this
 474         // is the only cross-browser way to do this. --John
 475         isFunction: function( fn ) {
 476                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 477                         fn.constructor != Array && /function/i.test( fn + "" );
 478         },
 479
 480         // check if an element is in a XML document
 481         isXMLDoc: function(elem) {
 482                 return elem.documentElement && !elem.body ||
 483                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 484         },
 485
 486         // Evalulates a script in a global context
 487         // Evaluates Async. in Safari 2 :-(
 488         globalEval: function( data ) {
 489                 data = jQuery.trim( data );
 490                 if ( data ) {
 491                         if ( window.execScript )
 492                                 window.execScript( data );
 493                         else if ( jQuery.browser.safari )
 494                                 // safari doesn't provide a synchronous global eval
 495                                 window.setTimeout( data, 0 );
 496                         else
 497                                 eval.call( window, data );
 498                 }
 499         },
 500
 501         nodeName: function( elem, name ) {
 502                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 503         },
 504
 505         cache: {},
 506
 507         data: function( elem, name, data ) {
 508                 elem = elem == window ? win : elem;
 509
 510                 var id = elem[ expando ];
 511
 512                 // Compute a unique ID for the element
 513                 if ( !id )
 514                         id = elem[ expando ] = ++uuid;
 515
 516                 // Only generate the data cache if we're
 517                 // trying to access or manipulate it
 518                 if ( name && !jQuery.cache[ id ] )
 519                         jQuery.cache[ id ] = {};
 520
 521                 // Prevent overriding the named cache with undefined values
 522                 if ( data != undefined )
 523                         jQuery.cache[ id ][ name ] = data;
 524
 525                 // Return the named cache data, or the ID for the element
 526                 return name ? jQuery.cache[ id ][ name ] : id;
 527         },
 528
 529         removeData: function( elem, name ) {
 530                 elem = elem == window ? win : elem;
 531
 532                 var id = elem[ expando ];
 533
 534                 // If we want to remove a specific section of the element's data
 535                 if ( name ) {
 536                         if ( jQuery.cache[ id ] ) {
 537                                 // Remove the section of cache data
 538                                 delete jQuery.cache[ id ][ name ];
 539
 540                                 // If we've removed all the data, remove the element's cache
 541                                 name = "";
 542                                 for ( name in jQuery.cache[ id ] ) break;
 543                                 if ( !name )
 544                                         jQuery.removeData( elem );
 545                         }
 546
 547                 // Otherwise, we want to remove all of the element's data
 548                 } else {
 549                         // Clean up the element expando
 550                         try {
 551                                 delete elem[ expando ];
 552                         } catch(e){
 553                                 // IE has trouble directly removing the expando
 554                                 // but it's ok with using removeAttribute
 555                                 if ( elem.removeAttribute )
 556                                         elem.removeAttribute( expando );
 557                         }
 558
 559                         // Completely remove the data cache
 560                         delete jQuery.cache[ id ];
 561                 }
 562         },
 563
 564         // args is for internal usage only
 565         each: function( obj, fn, args ) {
 566                 if ( args ) {
 567                         if ( obj.length == undefined )
 568                                 for ( var i in obj )
 569                                         fn.apply( obj[i], args );
 570                         else
 571                                 for ( var i = 0, ol = obj.length; i < ol; i++ )
 572                                         if ( fn.apply( obj[i], args ) === false ) break;
 573
 574                 // A special, fast, case for the most common use of each
 575                 } else {
 576                         if ( obj.length == undefined )
 577                                 for ( var i in obj )
 578                                         fn.call( obj[i], i, obj[i] );
 579                         else
 580                                 for ( var i = 0, ol = obj.length, val = obj[0];
 581                                         i < ol && fn.call(val,i,val) !== false; val = obj[++i] ){}
 582                 }
 583
 584                 return obj;
 585         },
 586
 587         prop: function(elem, value, type, index, prop){
 588                         // Handle executable functions
 589                         if ( jQuery.isFunction( value ) )
 590                                 value = value.call( elem, [index] );
 591
 592                         // exclude the following css properties to add px
 593                         var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 594
 595                         // Handle passing in a number to a CSS property
 596                         return value && value.constructor == Number && type == "curCSS" && !exclude.test(prop) ?
 597                                 value + "px" :
 598                                 value;
 599         },
 600
 601         className: {
 602                 // internal only, use addClass("class")
 603                 add: function( elem, c ){
 604                         jQuery.each( (c || "").split(/\s+/), function(i, cur){
 605                                 if ( !jQuery.className.has( elem.className, cur ) )
 606                                         elem.className += ( elem.className ? " " : "" ) + cur;
 607                         });
 608                 },
 609
 610                 // internal only, use removeClass("class")
 611                 remove: function( elem, c ){
 612                         elem.className = c != undefined ?
 613                                 jQuery.grep( elem.className.split(/\s+/), function(cur){
 614                                         return !jQuery.className.has( c, cur );
 615                                 }).join(" ") : "";
 616                 },
 617
 618                 // internal only, use is(".class")
 619                 has: function( t, c ) {
 620                         return jQuery.inArray( c, (t.className || t).toString().split(/\s+/) ) > -1;
 621                 }
 622         },
 623
 624         swap: function(e,o,f) {
 625                 for ( var i in o ) {
 626                         e.style["old"+i] = e.style[i];
 627                         e.style[i] = o[i];
 628                 }
 629                 f.apply( e, [] );
 630                 for ( var i in o )
 631                         e.style[i] = e.style["old"+i];
 632         },
 633
 634         css: function(e,p) {
 635                 if ( p == "height" || p == "width" ) {
 636                         var old = {}, oHeight, oWidth, d = ["Top","Bottom","Right","Left"];
 637
 638                         jQuery.each( d, function(){
 639                                 old["padding" + this] = 0;
 640                                 old["border" + this + "Width"] = 0;
 641                         });
 642
 643                         jQuery.swap( e, old, function() {
 644                                 if ( jQuery(e).is(':visible') ) {
 645                                         oHeight = e.offsetHeight;
 646                                         oWidth = e.offsetWidth;
 647                                 } else {
 648                                         e = jQuery(e.cloneNode(true))
 649                                                 .find(":radio").removeAttr("checked").end()
 650                                                 .css({
 651                                                         visibility: "hidden", position: "absolute", display: "block", right: "0", left: "0"
 652                                                 }).appendTo(e.parentNode)[0];
 653
 654                                         var parPos = jQuery.css(e.parentNode,"position") || "static";
 655                                         if ( parPos == "static" )
 656                                                 e.parentNode.style.position = "relative";
 657
 658                                         oHeight = e.clientHeight;
 659                                         oWidth = e.clientWidth;
 660
 661                                         if ( parPos == "static" )
 662                                                 e.parentNode.style.position = "static";
 663
 664                                         e.parentNode.removeChild(e);
 665                                 }
 666                         });
 667
 668                         return p == "height" ? oHeight : oWidth;
 669                 }
 670
 671                 return jQuery.curCSS( e, p );
 672         },
 673
 674         curCSS: function(elem, prop, force) {
 675                 var ret, stack = [], swap = [];
 676
 677                 // A helper method for determining if an element's values are broken
 678                 function color(a){
 679                         if ( !jQuery.browser.safari )
 680                                 return false;
 681
 682                         var ret = document.defaultView.getComputedStyle(a,null);
 683                         return !ret || ret.getPropertyValue("color") == "";
 684                 }
 685
 686                 if (prop == "opacity" && jQuery.browser.msie) {
 687                         ret = jQuery.attr(elem.style, "opacity");
 688                         return ret == "" ? "1" : ret;
 689                 }
 690
 691                 if (prop.match(/float/i))
 692                         prop = styleFloat;
 693
 694                 if (!force && elem.style[prop])
 695                         ret = elem.style[prop];
 696
 697                 else if (document.defaultView && document.defaultView.getComputedStyle) {
 698
 699                         if (prop.match(/float/i))
 700                                 prop = "float";
 701
 702                         prop = prop.replace(/([A-Z])/g,"-$1").toLowerCase();
 703                         var cur = document.defaultView.getComputedStyle(elem, null);
 704
 705                         if ( cur && !color(elem) )
 706                                 ret = cur.getPropertyValue(prop);
 707
 708                         // If the element isn't reporting its values properly in Safari
 709                         // then some display: none elements are involved
 710                         else {
 711                                 // Locate all of the parent display: none elements
 712                                 for ( var a = elem; a && color(a); a = a.parentNode )
 713                                         stack.unshift(a);
 714
 715                                 // Go through and make them visible, but in reverse
 716                                 // (It would be better if we knew the exact display type that they had)
 717                                 for ( a = 0; a < stack.length; a++ )
 718                                         if ( color(stack[a]) ) {
 719                                                 swap[a] = stack[a].style.display;
 720                                                 stack[a].style.display = "block";
 721                                         }
 722
 723                                 // Since we flip the display style, we have to handle that
 724                                 // one special, otherwise get the value
 725                                 ret = prop == "display" && swap[stack.length-1] != null ?
 726                                         "none" :
 727                                         document.defaultView.getComputedStyle(elem,null).getPropertyValue(prop) || "";
 728
 729                                 // Finally, revert the display styles back
 730                                 for ( a = 0; a < swap.length; a++ )
 731                                         if ( swap[a] != null )
 732                                                 stack[a].style.display = swap[a];
 733                         }
 734
 735                         if ( prop == "opacity" && ret == "" )
 736                                 ret = "1";
 737
 738                 } else if (elem.currentStyle) {
 739                         var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
 740                         ret = elem.currentStyle[prop] || elem.currentStyle[newProp];
 741
 742                         // From the awesome hack by Dean Edwards
 743                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 744
 745                         // If we're not dealing with a regular pixel number
 746                         // but a number that has a weird ending, we need to convert it to pixels
 747                         if ( !/^\d+(px)?$/i.test(ret) && /^\d/.test(ret) ) {
 748                                 var style = elem.style.left;
 749                                 var runtimeStyle = elem.runtimeStyle.left;
 750                                 elem.runtimeStyle.left = elem.currentStyle.left;
 751                                 elem.style.left = ret || 0;
 752                                 ret = elem.style.pixelLeft + "px";
 753                                 elem.style.left = style;
 754                                 elem.runtimeStyle.left = runtimeStyle;
 755                         }
 756                 }
 757
 758                 return ret;
 759         },
 760
 761         clean: function(a, doc) {
 762                 var r = [];
 763                 doc = doc || document;
 764
 765                 jQuery.each( a, function(i,arg){
 766                         if ( !arg ) return;
 767
 768                         if ( arg.constructor == Number )
 769                                 arg = arg.toString();
 770
 771                         // Convert html string into DOM nodes
 772                         if ( typeof arg == "string" ) {
 773                                 // Fix "XHTML"-style tags in all browsers
 774                                 arg = arg.replace(/(<(\w+)[^>]*?)\/>/g, function(m, all, tag){
 775                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area)$/i)? m : all+"></"+tag+">";
 776                                 });
 777
 778                                 // Trim whitespace, otherwise indexOf won't work as expected
 779                                 var s = jQuery.trim(arg).toLowerCase(), div = doc.createElement("div"), tb = [];
 780
 781                                 var wrap =
 782                                         // option or optgroup
 783                                         !s.indexOf("<opt") &&
 784                                         [1, "<select>", "</select>"] ||
 785
 786                                         !s.indexOf("<leg") &&
 787                                         [1, "<fieldset>", "</fieldset>"] ||
 788
 789                                         s.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 790                                         [1, "<table>", "</table>"] ||
 791
 792                                         !s.indexOf("<tr") &&
 793                                         [2, "<table><tbody>", "</tbody></table>"] ||
 794
 795                                         // <thead> matched above
 796                                         (!s.indexOf("<td") || !s.indexOf("<th")) &&
 797                                         [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
 798
 799                                         !s.indexOf("<col") &&
 800                                         [2, "<table><tbody></tbody><colgroup>", "</colgroup></table>"] ||
 801
 802                                         // IE can't serialize <link> and <script> tags normally
 803                                         jQuery.browser.msie &&
 804                                         [1, "div<div>", "</div>"] ||
 805
 806                                         [0,"",""];
 807
 808                                 // Go to html and back, then peel off extra wrappers
 809                                 div.innerHTML = wrap[1] + arg + wrap[2];
 810
 811                                 // Move to the right depth
 812                                 while ( wrap[0]-- )
 813                                         div = div.lastChild;
 814
 815                                 // Remove IE's autoinserted <tbody> from table fragments
 816                                 if ( jQuery.browser.msie ) {
 817
 818                                         // String was a <table>, *may* have spurious <tbody>
 819                                         if ( !s.indexOf("<table") && s.indexOf("<tbody") < 0 )
 820                                                 tb = div.firstChild && div.firstChild.childNodes;
 821
 822                                         // String was a bare <thead> or <tfoot>
 823                                         else if ( wrap[1] == "<table>" && s.indexOf("<tbody") < 0 )
 824                                                 tb = div.childNodes;
 825
 826                                         for ( var n = tb.length-1; n >= 0 ; --n )
 827                                                 if ( jQuery.nodeName(tb[n], "tbody") && !tb[n].childNodes.length )
 828                                                         tb[n].parentNode.removeChild(tb[n]);
 829
 830                                         // IE completely kills leading whitespace when innerHTML is used
 831                                         if ( /^\s/.test(arg) )
 832                                                 div.insertBefore( doc.createTextNode( arg.match(/^\s*/)[0] ), div.firstChild );
 833
 834                                 }
 835
 836                                 arg = jQuery.makeArray( div.childNodes );
 837                         }
 838
 839                         if ( 0 === arg.length && (!jQuery.nodeName(arg, "form") && !jQuery.nodeName(arg, "select")) )
 840                                 return;
 841
 842                         if ( arg[0] == undefined || jQuery.nodeName(arg, "form") || arg.options )
 843                                 r.push( arg );
 844                         else
 845                                 r = jQuery.merge( r, arg );
 846
 847                 });
 848
 849                 return r;
 850         },
 851
 852         attr: function(elem, name, value){
 853                 var fix = jQuery.isXMLDoc(elem) ? {} : jQuery.props;
 854
 855                 // Safari mis-reports the default selected property of a hidden option
 856                 // Accessing the parent's selectedIndex property fixes it
 857                 if ( name == "selected" && jQuery.browser.safari )
 858                         elem.parentNode.selectedIndex;
 859
 860                 // Certain attributes only work when accessed via the old DOM 0 way
 861                 if ( fix[name] ) {
 862                         if ( value != undefined ) elem[fix[name]] = value;
 863                         return elem[fix[name]];
 864                 } else if ( jQuery.browser.msie && name == "style" )
 865                         return jQuery.attr( elem.style, "cssText", value );
 866
 867                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName(elem, "form") && (name == "action" || name == "method") )
 868                         return elem.getAttributeNode(name).nodeValue;
 869
 870                 // IE elem.getAttribute passes even for style
 871                 else if ( elem.tagName ) {
 872
 873                         if ( value != undefined ) {
 874                                 if ( name == "type" && jQuery.nodeName(elem,"input") && elem.parentNode )
 875                                         throw "type property can't be changed";
 876                                 elem.setAttribute( name, value );
 877                         }
 878
 879                         if ( jQuery.browser.msie && /href|src/.test(name) && !jQuery.isXMLDoc(elem) )
 880                                 return elem.getAttribute( name, 2 );
 881
 882                         return elem.getAttribute( name );
 883
 884                 // elem is actually elem.style ... set the style
 885                 } else {
 886                         // IE actually uses filters for opacity
 887                         if ( name == "opacity" && jQuery.browser.msie ) {
 888                                 if ( value != undefined ) {
 889                                         // IE has trouble with opacity if it does not have layout
 890                                         // Force it by setting the zoom level
 891                                         elem.zoom = 1;
 892
 893                                         // Set the alpha filter to set the opacity
 894                                         elem.filter = (elem.filter || "").replace(/alpha\([^)]*\)/,"") +
 895                                                 (parseFloat(value).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
 896                                 }
 897
 898                                 return elem.filter ?
 899                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() : "";
 900                         }
 901                         name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
 902                         if ( value != undefined ) elem[name] = value;
 903                         return elem[name];
 904                 }
 905         },
 906
 907         trim: function(t){
 908                 return (t||"").replace(/^\s+|\s+$/g, "");
 909         },
 910
 911         makeArray: function( a ) {
 912                 var r = [];
 913
 914                 // Need to use typeof to fight Safari childNodes crashes
 915                 if ( typeof a != "array" )
 916                         for ( var i = 0, al = a.length; i < al; i++ )
 917                                 r.push( a[i] );
 918                 else
 919                         r = a.slice( 0 );
 920
 921                 return r;
 922         },
 923
 924         inArray: function( b, a ) {
 925                 for ( var i = 0, al = a.length; i < al; i++ )
 926                         if ( a[i] == b )
 927                                 return i;
 928                 return -1;
 929         },
 930
 931         merge: function(first, second) {
 932                 // We have to loop this way because IE & Opera overwrite the length
 933                 // expando of getElementsByTagName
 934
 935                 // Also, we need to make sure that the correct elements are being returned
 936                 // (IE returns comment nodes in a '*' query)
 937                 if ( jQuery.browser.msie ) {
 938                         for ( var i = 0; second[i]; i++ )
 939                                 if ( second[i].nodeType != 8 )
 940                                         first.push(second[i]);
 941                 } else
 942                         for ( var i = 0; second[i]; i++ )
 943                                 first.push(second[i]);
 944
 945                 return first;
 946         },
 947
 948         unique: function(first) {
 949                 var r = [], done = {};
 950
 951                 try {
 952                         for ( var i = 0, fl = first.length; i < fl; i++ ) {
 953                                 var id = jQuery.data(first[i]);
 954                                 if ( !done[id] ) {
 955                                         done[id] = true;
 956                                         r.push(first[i]);
 957                                 }
 958                         }
 959                 } catch(e) {
 960                         r = first;
 961                 }
 962
 963                 return r;
 964         },
 965
 966         grep: function(elems, fn, inv) {
 967                 // If a string is passed in for the function, make a function
 968                 // for it (a handy shortcut)
 969                 if ( typeof fn == "string" )
 970                         fn = eval("false||function(a,i){return " + fn + "}");
 971
 972                 var result = [];
 973
 974                 // Go through the array, only saving the items
 975                 // that pass the validator function
 976                 for ( var i = 0, el = elems.length; i < el; i++ )
 977                         if ( !inv && fn(elems[i],i) || inv && !fn(elems[i],i) )
 978                                 result.push( elems[i] );
 979
 980                 return result;
 981         },
 982
 983         map: function(elems, fn) {
 984                 // If a string is passed in for the function, make a function
 985                 // for it (a handy shortcut)
 986                 if ( typeof fn == "string" )
 987                         fn = eval("false||function(a){return " + fn + "}");
 988
 989                 var result = [];
 990
 991                 // Go through the array, translating each of the items to their
 992                 // new value (or values).
 993                 for ( var i = 0, el = elems.length; i < el; i++ ) {
 994                         var val = fn(elems[i],i);
 995
 996                         if ( val !== null && val != undefined ) {
 997                                 if ( val.constructor != Array ) val = [val];
 998                                 result = result.concat( val );
 999                         }
1000                 }
1001
1002                 return result;
1003         }
1004 });
1005
1006 var userAgent = navigator.userAgent.toLowerCase();
1007
1008 // Figure out what browser is being used
1009 jQuery.browser = {
1010         version: (userAgent.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1],
1011         safari: /webkit/.test(userAgent),
1012         opera: /opera/.test(userAgent),
1013         msie: /msie/.test(userAgent) && !/opera/.test(userAgent),
1014         mozilla: /mozilla/.test(userAgent) && !/(compatible|webkit)/.test(userAgent)
1015 };
1016
1017 var styleFloat = jQuery.browser.msie ? "styleFloat" : "cssFloat";
1018
1019 jQuery.extend({
1020         // Check to see if the W3C box model is being used
1021         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1022
1023         styleFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
1024
1025         props: {
1026                 "for": "htmlFor",
1027                 "class": "className",
1028                 "float": styleFloat,
1029                 cssFloat: styleFloat,
1030                 styleFloat: styleFloat,
1031                 innerHTML: "innerHTML",
1032                 className: "className",
1033                 value: "value",
1034                 disabled: "disabled",
1035                 checked: "checked",
1036                 readonly: "readOnly",
1037                 selected: "selected",
1038                 maxlength: "maxLength"
1039         }
1040 });
1041
1042 jQuery.each({
1043         parent: "a.parentNode",
1044         parents: "jQuery.dir(a,'parentNode')",
1045         next: "jQuery.nth(a,2,'nextSibling')",
1046         prev: "jQuery.nth(a,2,'previousSibling')",
1047         nextAll: "jQuery.dir(a,'nextSibling')",
1048         prevAll: "jQuery.dir(a,'previousSibling')",
1049         siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
1050         children: "jQuery.sibling(a.firstChild)",
1051         contents: "jQuery.nodeName(a,'iframe')?a.contentDocument||a.contentWindow.document:jQuery.makeArray(a.childNodes)"
1052 }, function(i,n){
1053         jQuery.fn[ i ] = function(a) {
1054                 var ret = jQuery.map(this,n);
1055                 if ( a && typeof a == "string" )
1056                         ret = jQuery.multiFilter(a,ret);
1057                 return this.pushStack( jQuery.unique(ret) );
1058         };
1059 });
1060
1061 jQuery.each({
1062         appendTo: "append",
1063         prependTo: "prepend",
1064         insertBefore: "before",
1065         insertAfter: "after",
1066         replaceAll: "replaceWith"
1067 }, function(i,n){
1068         jQuery.fn[ i ] = function(){
1069                 var a = arguments;
1070                 return this.each(function(){
1071                         for ( var j = 0, al = a.length; j < al; j++ )
1072                                 jQuery(a[j])[n]( this );
1073                 });
1074         };
1075 });
1076
1077 jQuery.each( {
1078         removeAttr: function( key ) {
1079                 jQuery.attr( this, key, "" );
1080                 this.removeAttribute( key );
1081         },
1082         addClass: function(c){
1083                 jQuery.className.add(this,c);
1084         },
1085         removeClass: function(c){
1086                 jQuery.className.remove(this,c);
1087         },
1088         toggleClass: function( c ){
1089                 jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this, c);
1090         },
1091         remove: function(a){
1092                 if ( !a || jQuery.filter( a, [this] ).r.length ) {
1093                         jQuery.removeData( this );
1094                         this.parentNode.removeChild( this );
1095                 }
1096         },
1097         empty: function() {
1098                 // Clean up the cache
1099                 jQuery("*", this).each(function(){ jQuery.removeData(this); });
1100
1101                 while ( this.firstChild )
1102                         this.removeChild( this.firstChild );
1103         }
1104 }, function(i,n){
1105         jQuery.fn[ i ] = function() {
1106                 return this.each( n, arguments );
1107         };
1108 });
1109
1110 jQuery.each( [ "Height", "Width" ], function(i,name){
1111         var n = name.toLowerCase();
1112
1113         jQuery.fn[ n ] = function(h) {
1114                 return this[0] == window ?
1115                         jQuery.browser.safari && self["inner" + name] ||
1116                         jQuery.boxModel && Math.max(document.documentElement["client" + name], document.body["client" + name]) ||
1117                         document.body["client" + name] :
1118
1119                         this[0] == document ?
1120                                 Math.max( document.body["scroll" + name], document.body["offset" + name] ) :
1121
1122                                 h == undefined ?
1123                                         ( this.length ? jQuery.css( this[0], n ) : null ) :
1124                                         this.css( n, h.constructor == String ? h : h + "px" );
1125         };
1126 });