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(selector, context) {
  17         // If the context is a namespace object, return a new object
  18         return this instanceof jQuery ?
  19                 this.init(selector, context) :
  20                 new jQuery(selector, context);
  21 };
  22
  23 // Map over the $ in case of overwrite
  24 if ( typeof $ != "undefined" )
  25         var _$ = $;
  26
  27 // Map the jQuery namespace to the '$' one
  28 window.$ = jQuery;
  29
  30 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/;
  31
  32 jQuery.fn = jQuery.prototype = {
  33         init: function(selector, context) {
  34                 // Make sure that a selection was provided
  35                 selector = selector || document;
  36
  37                 // Handle HTML strings
  38                 if ( typeof selector  == "string" ) {
  39                         var m = quickExpr.exec(selector);
  40                         if ( m && (m[1] || !context) ) {
  41                                 // HANDLE: $(html) -> $(array)
  42                                 if ( m[1] )
  43                                         selector = jQuery.clean( [ m[1] ], context );
  44
  45                                 // HANDLE: $("#id")
  46                                 else {
  47                                         var tmp = document.getElementById( m[3] );
  48                                         if ( tmp )
  49                                                 // Handle the case where IE and Opera return items
  50                                                 // by name instead of ID
  51                                                 if ( tmp.id != m[3] )
  52                                                         return jQuery().find( selector );
  53                                                 else {
  54                                                         this[0] = tmp;
  55                                                         this.length = 1;
  56                                                         return this;
  57                                                 }
  58                                         else
  59                                                 selector = [];
  60                                 }
  61
  62                         // HANDLE: $(expr)
  63                         } else
  64                                 return new jQuery( context ).find( selector );
  65
  66                 // HANDLE: $(function)
  67                 // Shortcut for document ready
  68                 } else if ( jQuery.isFunction(selector) )
  69                         return new jQuery(document)[ jQuery.fn.ready ? "ready" : "load" ]( selector );
  70
  71                 return this.setArray(
  72                         // HANDLE: $(array)
  73                         selector.constructor == Array && selector ||
  74
  75                         // HANDLE: $(arraylike)
  76                         // Watch for when an array-like object is passed as the selector
  77                         (selector.jquery || selector.length && selector != window && !selector.nodeType && selector[0] != undefined && selector[0].nodeType) && jQuery.makeArray( selector ) ||
  78
  79                         // HANDLE: $(*)
  80                         [ selector ] );
  81         },
  82
  83         jquery: "@VERSION",
  84
  85         size: function() {
  86                 return this.length;
  87         },
  88
  89         length: 0,
  90
  91         get: function( num ) {
  92                 return num == undefined ?
  93
  94                         // Return a 'clean' array
  95                         jQuery.makeArray( this ) :
  96
  97                         // Return just the object
  98                         this[num];
  99         },
 100
 101         pushStack: function( a ) {
 102                 var ret = jQuery(a);
 103                 ret.prevObject = this;
 104                 return ret;
 105         },
 106
 107         setArray: function( a ) {
 108                 this.length = 0;
 109                 Array.prototype.push.apply( this, a );
 110                 return this;
 111         },
 112
 113         each: function( fn, args ) {
 114                 return jQuery.each( this, fn, args );
 115         },
 116
 117         index: function( obj ) {
 118                 var pos = -1;
 119                 this.each(function(i){
 120                         if ( this == obj ) pos = i;
 121                 });
 122                 return pos;
 123         },
 124
 125         attr: function( key, value, type ) {
 126                 var obj = key;
 127
 128                 // Look for the case where we're accessing a style value
 129                 if ( key.constructor == String )
 130                         if ( value == undefined )
 131                                 return this.length && jQuery[ type || "attr" ]( this[0], key ) || undefined;
 132                         else {
 133                                 obj = {};
 134                                 obj[ key ] = value;
 135                         }
 136
 137                 // Check to see if we're setting style values
 138                 return this.each(function(index){
 139                         // Set all the styles
 140                         for ( var prop in obj )
 141                                 jQuery.attr(
 142                                         type ? this.style : this,
 143                                         prop, jQuery.prop(this, obj[prop], type, index, prop)
 144                                 );
 145                 });
 146         },
 147
 148         css: function( key, value ) {
 149                 return this.attr( key, value, "curCSS" );
 150         },
 151
 152         text: function(e) {
 153                 if ( typeof e != "object" && e != null )
 154                         return this.empty().append( document.createTextNode( e ) );
 155
 156                 var t = "";
 157                 jQuery.each( e || this, function(){
 158                         jQuery.each( this.childNodes, function(){
 159                                 if ( this.nodeType != 8 )
 160                                         t += this.nodeType != 1 ?
 161                                                 this.nodeValue : jQuery.fn.text([ this ]);
 162                         });
 163                 });
 164                 return t;
 165         },
 166
 167         wrapAll: function(html) {
 168                 if ( this[0] )
 169                         // The elements to wrap the target around
 170                         jQuery(html, this[0].ownerDocument)
 171                                 .clone()
 172                                 .insertBefore(this[0])
 173                                 .map(function(){
 174                                         var elem = this;
 175                                         while ( elem.firstChild )
 176                                                 elem = elem.firstChild;
 177                                         return elem;
 178                                 })
 179                                 .append(this);
 180
 181                 return this;
 182         },
 183
 184         wrapInner: function(html) {
 185                 return this.each(function(){
 186                         jQuery(this).contents().wrapAll(html);
 187                 });
 188         },
 189
 190         wrap: function(html) {
 191                 return this.each(function(){
 192                         jQuery(this).wrapAll(html);
 193                 });
 194         },
 195
 196         append: function() {
 197                 return this.domManip(arguments, true, 1, function(a){
 198                         this.appendChild( a );
 199                 });
 200         },
 201
 202         prepend: function() {
 203                 return this.domManip(arguments, true, -1, function(a){
 204                         this.insertBefore( a, this.firstChild );
 205                 });
 206         },
 207
 208         before: function() {
 209                 return this.domManip(arguments, false, 1, function(a){
 210                         this.parentNode.insertBefore( a, this );
 211                 });
 212         },
 213
 214         after: function() {
 215                 return this.domManip(arguments, false, -1, function(a){
 216                         this.parentNode.insertBefore( a, this.nextSibling );
 217                 });
 218         },
 219
 220         end: function() {
 221                 return this.prevObject || jQuery([]);
 222         },
 223
 224         find: function(t) {
 225                 var data = jQuery.map(this, function(a){ return jQuery.find(t,a); });
 226                 return this.pushStack( /[^+>] [^+>]/.test( t ) || t.indexOf("..") > -1 ?
 227                         jQuery.unique( data ) : data );
 228         },
 229
 230         clone: function(events) {
 231                 // Do the clone
 232                 var ret = this.map(function(){
 233                         return this.outerHTML ? jQuery(this.outerHTML)[0] : this.cloneNode(true);
 234                 });
 235
 236                 // Need to set the expando to null on the cloned set if it exists
 237                 // removeData doesn't work here, IE removes it from the original as well
 238                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 239                 var clone = ret.find("*").andSelf().each(function(){
 240                         if ( this[ expando ] != undefined )
 241                                 this[ expando ] = null;
 242                 });
 243
 244                 // Copy the events from the original to the clone
 245                 if (events === true)
 246                         this.find("*").andSelf().each(function(i) {
 247                                 var events = jQuery.data(this, "events");
 248                                 for ( var type in events )
 249                                         for ( var handler in events[type] )
 250                                                 jQuery.event.add(clone[i], type, events[type][handler], events[type][handler].data);
 251                         });
 252
 253                 // Return the cloned set
 254                 return ret;
 255         },
 256
 257         filter: function(t) {
 258                 return this.pushStack(
 259                         jQuery.isFunction( t ) &&
 260                         jQuery.grep(this, function(el, index){
 261                                 return t.apply(el, [index]);
 262                         }) ||
 263
 264                         jQuery.multiFilter(t,this) );
 265         },
 266
 267         not: function(t) {
 268                 return this.pushStack(
 269                         t.constructor == String &&
 270                         jQuery.multiFilter(t, this, true) ||
 271
 272                         jQuery.grep(this, function(a) {
 273                                 return ( t.constructor == Array || t.jquery )
 274                                         ? jQuery.inArray( a, t ) < 0
 275                                         : a != t;
 276                         })
 277                 );
 278         },
 279
 280         add: function(t) {
 281                 return this.pushStack( jQuery.merge(
 282                         this.get(),
 283                         t.constructor == String ?
 284                                 jQuery(t).get() :
 285                                 t.length != undefined && (!t.nodeName || t.nodeName == "FORM") ?
 286                                         t : [t] )
 287                 );
 288         },
 289
 290         is: function(expr) {
 291                 return expr ? jQuery.multiFilter(expr,this).length > 0 : false;
 292         },
 293
 294         hasClass: function(expr) {
 295                 return this.is("." + expr);
 296         },
 297
 298         val: function( val ) {
 299                 if ( val == undefined ) {
 300                         if ( this.length ) {
 301                                 var elem = this[0];
 302
 303                                 // We need to handle select boxes special
 304                                 if ( jQuery.nodeName(elem, "select") ) {
 305                                         var index = elem.selectedIndex,
 306                                                 a = [],
 307                                                 options = elem.options,
 308                                                 one = elem.type == "select-one";
 309
 310                                         // Nothing was selected
 311                                         if ( index < 0 )
 312                                                 return null;
 313
 314                                         // Loop through all the selected options
 315                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 316                                                 var option = options[i];
 317                                                 if ( option.selected ) {
 318                                                         // Get the specifc value for the option
 319                                                         var val = jQuery.browser.msie && !option.attributes["value"].specified ? option.text : option.value;
 320
 321                                                         // We don't need an array for one selects
 322                                                         if ( one )
 323                                                                 return val;
 324
 325                                                         // Multi-Selects return an array
 326                                                         a.push(val);
 327                                                 }
 328                                         }
 329
 330                                         return a;
 331
 332                                 // Everything else, we just grab the value
 333                                 } else
 334                                         return this[0].value.replace(/\r/g, "");
 335                         }
 336                 } else
 337                         return this.each(function(){
 338                                 if ( val.constructor == Array && /radio|checkbox/.test(this.type) )
 339                                         this.checked = (jQuery.inArray(this.value, val) >= 0 ||
 340                                                 jQuery.inArray(this.name, val) >= 0);
 341                                 else if ( jQuery.nodeName(this, "select") ) {
 342                                         var tmp = val.constructor == Array ? val : [val];
 343
 344                                         jQuery("option", this).each(function(){
 345                                                 this.selected = (jQuery.inArray(this.value, tmp) >= 0 ||
 346                                                 jQuery.inArray(this.text, tmp) >= 0);
 347                                         });
 348
 349                                         if ( !tmp.length )
 350                                                 this.selectedIndex = -1;
 351                                 } else
 352                                         this.value = val;
 353                         });
 354         },
 355
 356         html: function( val ) {
 357                 return val == undefined ?
 358                         ( this.length ? this[0].innerHTML : null ) :
 359                         this.empty().append( val );
 360         },
 361
 362         replaceWith: function( val ) {
 363                 return this.after( val ).remove();
 364         },
 365
 366         slice: function() {
 367                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 368         },
 369
 370         map: function(fn) {
 371                 return this.pushStack(jQuery.map( this, function(elem,i){
 372                         return fn.call( elem, i, elem );
 373                 }));
 374         },
 375
 376         andSelf: function() {
 377                 return this.add( this.prevObject );
 378         },
 379
 380         domManip: function(args, table, dir, fn) {
 381                 var clone = this.length > 1, a;
 382
 383                 return this.each(function(){
 384                         if ( !a ) {
 385                                 a = jQuery.clean(args, this.ownerDocument);
 386                                 if ( dir < 0 )
 387                                         a.reverse();
 388                         }
 389
 390                         var obj = this;
 391
 392                         if ( table && jQuery.nodeName(this, "table") && jQuery.nodeName(a[0], "tr") )
 393                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild(document.createElement("tbody"));
 394
 395                         jQuery.each( a, function(){
 396                                 var elem = clone ? this.cloneNode(true) : this;
 397                                 if ( !evalScript(0, elem) )
 398                                         fn.call( obj, elem );
 399                         });
 400                 });
 401         }
 402 };
 403
 404 function evalScript(i, elem){
 405         var script = jQuery.nodeName(elem, "script");
 406
 407         if ( script ) {
 408                 if ( elem.src )
 409                         jQuery.ajax({ url: elem.src, async: false, dataType: "script" });
 410                 else
 411                         jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 412
 413                 if ( elem.parentNode )
 414                         elem.parentNode.removeChild(elem);
 415
 416         } else if ( elem.nodeType == 1 )
 417     jQuery("script", elem).each(evalScript);
 418
 419         return script;
 420 }
 421
 422 jQuery.extend = jQuery.fn.extend = function() {
 423         // copy reference to target object
 424         var target = arguments[0] || {}, a = 1, al = arguments.length, deep = false;
 425
 426         // Handle a deep copy situation
 427         if ( target.constructor == Boolean ) {
 428                 deep = target;
 429                 target = arguments[1] || {};
 430         }
 431
 432         // extend jQuery itself if only one argument is passed
 433         if ( al == 1 ) {
 434                 target = this;
 435                 a = 0;
 436         }
 437
 438         var prop;
 439
 440         for ( ; a < al; a++ )
 441                 // Only deal with non-null/undefined values
 442                 if ( (prop = arguments[a]) != null )
 443                         // Extend the base object
 444                         for ( var i in prop ) {
 445                                 // Prevent never-ending loop
 446                                 if ( target == prop[i] )
 447                                         continue;
 448
 449                                 // Recurse if we're merging object values
 450                                 if ( deep && typeof prop[i] == 'object' && target[i] )
 451                                         jQuery.extend( target[i], prop[i] );
 452
 453                                 // Don't bring in undefined values
 454                                 else if ( prop[i] != undefined )
 455                                         target[i] = prop[i];
 456                         }
 457
 458         // Return the modified object
 459         return target;
 460 };
 461
 462 var expando = "jQuery" + (new Date()).getTime(), uuid = 0, win = {};
 463
 464 jQuery.extend({
 465         noConflict: function(deep) {
 466                 window.$ = _$;
 467                 if ( deep )
 468                         window.jQuery = _jQuery;
 469                 return jQuery;
 470         },
 471
 472         // This may seem like some crazy code, but trust me when I say that this
 473         // is the only cross-browser way to do this. --John
 474         isFunction: function( fn ) {
 475                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 476                         fn.constructor != Array && /function/i.test( fn + "" );
 477         },
 478
 479         // check if an element is in a XML document
 480         isXMLDoc: function(elem) {
 481                 return elem.documentElement && !elem.body ||
 482                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 483         },
 484
 485         // Evalulates a script in a global context
 486         // Evaluates Async. in Safari 2 :-(
 487         globalEval: function( data ) {
 488                 data = jQuery.trim( data );
 489                 if ( data ) {
 490                         if ( window.execScript )
 491                                 window.execScript( data );
 492                         else if ( jQuery.browser.safari )
 493                                 // safari doesn't provide a synchronous global eval
 494                                 window.setTimeout( data, 0 );
 495                         else
 496                                 eval.call( window, data );
 497                 }
 498         },
 499
 500         nodeName: function( elem, name ) {
 501                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 502         },
 503
 504         cache: {},
 505
 506         data: function( elem, name, data ) {
 507                 elem = elem == window ? win : elem;
 508
 509                 var id = elem[ expando ];
 510
 511                 // Compute a unique ID for the element
 512                 if ( !id )
 513                         id = elem[ expando ] = ++uuid;
 514
 515                 // Only generate the data cache if we're
 516                 // trying to access or manipulate it
 517                 if ( name && !jQuery.cache[ id ] )
 518                         jQuery.cache[ id ] = {};
 519
 520                 // Prevent overriding the named cache with undefined values
 521                 if ( data != undefined )
 522                         jQuery.cache[ id ][ name ] = data;
 523
 524                 // Return the named cache data, or the ID for the element
 525                 return name ? jQuery.cache[ id ][ name ] : id;
 526         },
 527
 528         removeData: function( elem, name ) {
 529                 elem = elem == window ? win : elem;
 530
 531                 var id = elem[ expando ];
 532
 533                 // If we want to remove a specific section of the element's data
 534                 if ( name ) {
 535                         if ( jQuery.cache[ id ] ) {
 536                                 // Remove the section of cache data
 537                                 delete jQuery.cache[ id ][ name ];
 538
 539                                 // If we've removed all the data, remove the element's cache
 540                                 name = "";
 541                                 for ( name in jQuery.cache[ id ] ) break;
 542                                 if ( !name )
 543                                         jQuery.removeData( elem );
 544                         }
 545
 546                 // Otherwise, we want to remove all of the element's data
 547                 } else {
 548                         // Clean up the element expando
 549                         try {
 550                                 delete elem[ expando ];
 551                         } catch(e){
 552                                 // IE has trouble directly removing the expando
 553                                 // but it's ok with using removeAttribute
 554                                 if ( elem.removeAttribute )
 555                                         elem.removeAttribute( expando );
 556                         }
 557
 558                         // Completely remove the data cache
 559                         delete jQuery.cache[ id ];
 560                 }
 561         },
 562
 563         // args is for internal usage only
 564         each: function( obj, fn, args ) {
 565                 if ( args ) {
 566                         if ( obj.length == undefined )
 567                                 for ( var i in obj )
 568                                         fn.apply( obj[i], args );
 569                         else
 570                                 for ( var i = 0, ol = obj.length; i < ol; i++ )
 571                                         if ( fn.apply( obj[i], args ) === false ) break;
 572
 573                 // A special, fast, case for the most common use of each
 574                 } else {
 575                         if ( obj.length == undefined )
 576                                 for ( var i in obj )
 577                                         fn.call( obj[i], i, obj[i] );
 578                         else
 579                                 for ( var i = 0, ol = obj.length, val = obj[0];
 580                                         i < ol && fn.call(val,i,val) !== false; val = obj[++i] ){}
 581                 }
 582
 583                 return obj;
 584         },
 585
 586         prop: function(elem, value, type, index, prop){
 587                         // Handle executable functions
 588                         if ( jQuery.isFunction( value ) )
 589                                 value = value.call( elem, [index] );
 590
 591                         // exclude the following css properties to add px
 592                         var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 593
 594                         // Handle passing in a number to a CSS property
 595                         return value && value.constructor == Number && type == "curCSS" && !exclude.test(prop) ?
 596                                 value + "px" :
 597                                 value;
 598         },
 599
 600         className: {
 601                 // internal only, use addClass("class")
 602                 add: function( elem, c ){
 603                         jQuery.each( (c || "").split(/\s+/), function(i, cur){
 604                                 if ( !jQuery.className.has( elem.className, cur ) )
 605                                         elem.className += ( elem.className ? " " : "" ) + cur;
 606                         });
 607                 },
 608
 609                 // internal only, use removeClass("class")
 610                 remove: function( elem, c ){
 611                         elem.className = c != undefined ?
 612                                 jQuery.grep( elem.className.split(/\s+/), function(cur){
 613                                         return !jQuery.className.has( c, cur );
 614                                 }).join(" ") : "";
 615                 },
 616
 617                 // internal only, use is(".class")
 618                 has: function( t, c ) {
 619                         return jQuery.inArray( c, (t.className || t).toString().split(/\s+/) ) > -1;
 620                 }
 621         },
 622
 623         swap: function(e,o,f) {
 624                 for ( var i in o ) {
 625                         e.style["old"+i] = e.style[i];
 626                         e.style[i] = o[i];
 627                 }
 628                 f.apply( e, [] );
 629                 for ( var i in o )
 630                         e.style[i] = e.style["old"+i];
 631         },
 632
 633         css: function(e,p) {
 634                 if ( p == "height" || p == "width" ) {
 635                         var old = {}, oHeight, oWidth, d = ["Top","Bottom","Right","Left"];
 636
 637                         jQuery.each( d, function(){
 638                                 old["padding" + this] = 0;
 639                                 old["border" + this + "Width"] = 0;
 640                         });
 641
 642                         jQuery.swap( e, old, function() {
 643                                 if ( jQuery(e).is(':visible') ) {
 644                                         oHeight = e.offsetHeight;
 645                                         oWidth = e.offsetWidth;
 646                                 } else {
 647                                         e = jQuery(e.cloneNode(true))
 648                                                 .find(":radio").removeAttr("checked").end()
 649                                                 .css({
 650                                                         visibility: "hidden", position: "absolute", display: "block", right: "0", left: "0"
 651                                                 }).appendTo(e.parentNode)[0];
 652
 653                                         var parPos = jQuery.css(e.parentNode,"position") || "static";
 654                                         if ( parPos == "static" )
 655                                                 e.parentNode.style.position = "relative";
 656
 657                                         oHeight = e.clientHeight;
 658                                         oWidth = e.clientWidth;
 659
 660                                         if ( parPos == "static" )
 661                                                 e.parentNode.style.position = "static";
 662
 663                                         e.parentNode.removeChild(e);
 664                                 }
 665                         });
 666
 667                         return p == "height" ? oHeight : oWidth;
 668                 }
 669
 670                 return jQuery.curCSS( e, p );
 671         },
 672
 673         curCSS: function(elem, prop, force) {
 674                 var ret, stack = [], swap = [];
 675
 676                 // A helper method for determining if an element's values are broken
 677                 function color(a){
 678                         if ( !jQuery.browser.safari )
 679                                 return false;
 680
 681                         var ret = document.defaultView.getComputedStyle(a,null);
 682                         return !ret || ret.getPropertyValue("color") == "";
 683                 }
 684
 685                 if (prop == "opacity" && jQuery.browser.msie) {
 686                         ret = jQuery.attr(elem.style, "opacity");
 687                         return ret == "" ? "1" : ret;
 688                 }
 689
 690                 if (prop.match(/float/i))
 691                         prop = styleFloat;
 692
 693                 if (!force && elem.style[prop])
 694                         ret = elem.style[prop];
 695
 696                 else if (document.defaultView && document.defaultView.getComputedStyle) {
 697
 698                         if (prop.match(/float/i))
 699                                 prop = "float";
 700
 701                         prop = prop.replace(/([A-Z])/g,"-$1").toLowerCase();
 702                         var cur = document.defaultView.getComputedStyle(elem, null);
 703
 704                         if ( cur && !color(elem) )
 705                                 ret = cur.getPropertyValue(prop);
 706
 707                         // If the element isn't reporting its values properly in Safari
 708                         // then some display: none elements are involved
 709                         else {
 710                                 // Locate all of the parent display: none elements
 711                                 for ( var a = elem; a && color(a); a = a.parentNode )
 712                                         stack.unshift(a);
 713
 714                                 // Go through and make them visible, but in reverse
 715                                 // (It would be better if we knew the exact display type that they had)
 716                                 for ( a = 0; a < stack.length; a++ )
 717                                         if ( color(stack[a]) ) {
 718                                                 swap[a] = stack[a].style.display;
 719                                                 stack[a].style.display = "block";
 720                                         }
 721
 722                                 // Since we flip the display style, we have to handle that
 723                                 // one special, otherwise get the value
 724                                 ret = prop == "display" && swap[stack.length-1] != null ?
 725                                         "none" :
 726                                         document.defaultView.getComputedStyle(elem,null).getPropertyValue(prop) || "";
 727
 728                                 // Finally, revert the display styles back
 729                                 for ( a = 0; a < swap.length; a++ )
 730                                         if ( swap[a] != null )
 731                                                 stack[a].style.display = swap[a];
 732                         }
 733
 734                         if ( prop == "opacity" && ret == "" )
 735                                 ret = "1";
 736
 737                 } else if (elem.currentStyle) {
 738                         var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
 739                         ret = elem.currentStyle[prop] || elem.currentStyle[newProp];
 740
 741                         // From the awesome hack by Dean Edwards
 742                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 743
 744                         // If we're not dealing with a regular pixel number
 745                         // but a number that has a weird ending, we need to convert it to pixels
 746                         if ( !/^\d+(px)?$/i.test(ret) && /^\d/.test(ret) ) {
 747                                 var style = elem.style.left;
 748                                 var runtimeStyle = elem.runtimeStyle.left;
 749                                 elem.runtimeStyle.left = elem.currentStyle.left;
 750                                 elem.style.left = ret || 0;
 751                                 ret = elem.style.pixelLeft + "px";
 752                                 elem.style.left = style;
 753                                 elem.runtimeStyle.left = runtimeStyle;
 754                         }
 755                 }
 756
 757                 return ret;
 758         },
 759
 760         clean: function(a, doc) {
 761                 var r = [];
 762                 doc = doc || document;
 763
 764                 jQuery.each( a, function(i,arg){
 765                         if ( !arg ) return;
 766
 767                         if ( arg.constructor == Number )
 768                                 arg = arg.toString();
 769
 770                         // Convert html string into DOM nodes
 771                         if ( typeof arg == "string" ) {
 772                                 // Fix "XHTML"-style tags in all browsers
 773                                 arg = arg.replace(/(<(\w+)[^>]*?)\/>/g, function(m, all, tag){
 774                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area)$/i)? m : all+"></"+tag+">";
 775                                 });
 776
 777                                 // Trim whitespace, otherwise indexOf won't work as expected
 778                                 var s = jQuery.trim(arg).toLowerCase(), div = doc.createElement("div"), tb = [];
 779
 780                                 var wrap =
 781                                         // option or optgroup
 782                                         !s.indexOf("<opt") &&
 783                                         [1, "<select>", "</select>"] ||
 784
 785                                         !s.indexOf("<leg") &&
 786                                         [1, "<fieldset>", "</fieldset>"] ||
 787
 788                                         s.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 789                                         [1, "<table>", "</table>"] ||
 790
 791                                         !s.indexOf("<tr") &&
 792                                         [2, "<table><tbody>", "</tbody></table>"] ||
 793
 794                                         // <thead> matched above
 795                                         (!s.indexOf("<td") || !s.indexOf("<th")) &&
 796                                         [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
 797
 798                                         !s.indexOf("<col") &&
 799                                         [2, "<table><tbody></tbody><colgroup>", "</colgroup></table>"] ||
 800
 801                                         // IE can't serialize <link> and <script> tags normally
 802                                         jQuery.browser.msie &&
 803                                         [1, "div<div>", "</div>"] ||
 804
 805                                         [0,"",""];
 806
 807                                 // Go to html and back, then peel off extra wrappers
 808                                 div.innerHTML = wrap[1] + arg + wrap[2];
 809
 810                                 // Move to the right depth
 811                                 while ( wrap[0]-- )
 812                                         div = div.lastChild;
 813
 814                                 // Remove IE's autoinserted <tbody> from table fragments
 815                                 if ( jQuery.browser.msie ) {
 816
 817                                         // String was a <table>, *may* have spurious <tbody>
 818                                         if ( !s.indexOf("<table") && s.indexOf("<tbody") < 0 )
 819                                                 tb = div.firstChild && div.firstChild.childNodes;
 820
 821                                         // String was a bare <thead> or <tfoot>
 822                                         else if ( wrap[1] == "<table>" && s.indexOf("<tbody") < 0 )
 823                                                 tb = div.childNodes;
 824
 825                                         for ( var n = tb.length-1; n >= 0 ; --n )
 826                                                 if ( jQuery.nodeName(tb[n], "tbody") && !tb[n].childNodes.length )
 827                                                         tb[n].parentNode.removeChild(tb[n]);
 828
 829                                         // IE completely kills leading whitespace when innerHTML is used
 830                                         if ( /^\s/.test(arg) )
 831                                                 div.insertBefore( doc.createTextNode( arg.match(/^\s*/)[0] ), div.firstChild );
 832
 833                                 }
 834
 835                                 arg = jQuery.makeArray( div.childNodes );
 836                         }
 837
 838                         if ( 0 === arg.length && (!jQuery.nodeName(arg, "form") && !jQuery.nodeName(arg, "select")) )
 839                                 return;
 840
 841                         if ( arg[0] == undefined || jQuery.nodeName(arg, "form") || arg.options )
 842                                 r.push( arg );
 843                         else
 844                                 r = jQuery.merge( r, arg );
 845
 846                 });
 847
 848                 return r;
 849         },
 850
 851         attr: function(elem, name, value){
 852                 var fix = jQuery.isXMLDoc(elem) ? {} : jQuery.props;
 853
 854                 // Safari mis-reports the default selected property of a hidden option
 855                 // Accessing the parent's selectedIndex property fixes it
 856                 if ( name == "selected" && jQuery.browser.safari )
 857                         elem.parentNode.selectedIndex;
 858
 859                 // Certain attributes only work when accessed via the old DOM 0 way
 860                 if ( fix[name] ) {
 861                         if ( value != undefined ) elem[fix[name]] = value;
 862                         return elem[fix[name]];
 863                 } else if ( jQuery.browser.msie && name == "style" )
 864                         return jQuery.attr( elem.style, "cssText", value );
 865
 866                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName(elem, "form") && (name == "action" || name == "method") )
 867                         return elem.getAttributeNode(name).nodeValue;
 868
 869                 // IE elem.getAttribute passes even for style
 870                 else if ( elem.tagName ) {
 871
 872                         if ( value != undefined ) {
 873                                 if ( name == "type" && jQuery.nodeName(elem,"input") && elem.parentNode )
 874                                         throw "type property can't be changed";
 875                                 elem.setAttribute( name, value );
 876                         }
 877
 878                         if ( jQuery.browser.msie && /href|src/.test(name) && !jQuery.isXMLDoc(elem) )
 879                                 return elem.getAttribute( name, 2 );
 880
 881                         return elem.getAttribute( name );
 882
 883                 // elem is actually elem.style ... set the style
 884                 } else {
 885                         // IE actually uses filters for opacity
 886                         if ( name == "opacity" && jQuery.browser.msie ) {
 887                                 if ( value != undefined ) {
 888                                         // IE has trouble with opacity if it does not have layout
 889                                         // Force it by setting the zoom level
 890                                         elem.zoom = 1;
 891
 892                                         // Set the alpha filter to set the opacity
 893                                         elem.filter = (elem.filter || "").replace(/alpha\([^)]*\)/,"") +
 894                                                 (parseFloat(value).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
 895                                 }
 896
 897                                 return elem.filter ?
 898                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() : "";
 899                         }
 900                         name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
 901                         if ( value != undefined ) elem[name] = value;
 902                         return elem[name];
 903                 }
 904         },
 905
 906         trim: function(t){
 907                 return (t||"").replace(/^\s+|\s+$/g, "");
 908         },
 909
 910         makeArray: function( a ) {
 911                 var r = [];
 912
 913                 // Need to use typeof to fight Safari childNodes crashes
 914                 if ( typeof a != "array" )
 915                         for ( var i = 0, al = a.length; i < al; i++ )
 916                                 r.push( a[i] );
 917                 else
 918                         r = a.slice( 0 );
 919
 920                 return r;
 921         },
 922
 923         inArray: function( b, a ) {
 924                 for ( var i = 0, al = a.length; i < al; i++ )
 925                         if ( a[i] == b )
 926                                 return i;
 927                 return -1;
 928         },
 929
 930         merge: function(first, second) {
 931                 // We have to loop this way because IE & Opera overwrite the length
 932                 // expando of getElementsByTagName
 933
 934                 // Also, we need to make sure that the correct elements are being returned
 935                 // (IE returns comment nodes in a '*' query)
 936                 if ( jQuery.browser.msie ) {
 937                         for ( var i = 0; second[i]; i++ )
 938                                 if ( second[i].nodeType != 8 )
 939                                         first.push(second[i]);
 940                 } else
 941                         for ( var i = 0; second[i]; i++ )
 942                                 first.push(second[i]);
 943
 944                 return first;
 945         },
 946
 947         unique: function(first) {
 948                 var r = [], done = {};
 949
 950                 try {
 951                         for ( var i = 0, fl = first.length; i < fl; i++ ) {
 952                                 var id = jQuery.data(first[i]);
 953                                 if ( !done[id] ) {
 954                                         done[id] = true;
 955                                         r.push(first[i]);
 956                                 }
 957                         }
 958                 } catch(e) {
 959                         r = first;
 960                 }
 961
 962                 return r;
 963         },
 964
 965         grep: function(elems, fn, inv) {
 966                 // If a string is passed in for the function, make a function
 967                 // for it (a handy shortcut)
 968                 if ( typeof fn == "string" )
 969                         fn = eval("false||function(a,i){return " + fn + "}");
 970
 971                 var result = [];
 972
 973                 // Go through the array, only saving the items
 974                 // that pass the validator function
 975                 for ( var i = 0, el = elems.length; i < el; i++ )
 976                         if ( !inv && fn(elems[i],i) || inv && !fn(elems[i],i) )
 977                                 result.push( elems[i] );
 978
 979                 return result;
 980         },
 981
 982         map: function(elems, fn) {
 983                 // If a string is passed in for the function, make a function
 984                 // for it (a handy shortcut)
 985                 if ( typeof fn == "string" )
 986                         fn = eval("false||function(a){return " + fn + "}");
 987
 988                 var result = [];
 989
 990                 // Go through the array, translating each of the items to their
 991                 // new value (or values).
 992                 for ( var i = 0, el = elems.length; i < el; i++ ) {
 993                         var val = fn(elems[i],i);
 994
 995                         if ( val !== null && val != undefined ) {
 996                                 if ( val.constructor != Array ) val = [val];
 997                                 result = result.concat( val );
 998                         }
 999                 }
1000
1001                 return result;
1002         }
1003 });
1004
1005 var userAgent = navigator.userAgent.toLowerCase();
1006
1007 // Figure out what browser is being used
1008 jQuery.browser = {
1009         version: (userAgent.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1],
1010         safari: /webkit/.test(userAgent),
1011         opera: /opera/.test(userAgent),
1012         msie: /msie/.test(userAgent) && !/opera/.test(userAgent),
1013         mozilla: /mozilla/.test(userAgent) && !/(compatible|webkit)/.test(userAgent)
1014 };
1015
1016 var styleFloat = jQuery.browser.msie ? "styleFloat" : "cssFloat";
1017
1018 jQuery.extend({
1019         // Check to see if the W3C box model is being used
1020         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1021
1022         styleFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
1023
1024         props: {
1025                 "for": "htmlFor",
1026                 "class": "className",
1027                 "float": styleFloat,
1028                 cssFloat: styleFloat,
1029                 styleFloat: styleFloat,
1030                 innerHTML: "innerHTML",
1031                 className: "className",
1032                 value: "value",
1033                 disabled: "disabled",
1034                 checked: "checked",
1035                 readonly: "readOnly",
1036                 selected: "selected",
1037                 maxlength: "maxLength"
1038         }
1039 });
1040
1041 jQuery.each({
1042         parent: "a.parentNode",
1043         parents: "jQuery.dir(a,'parentNode')",
1044         next: "jQuery.nth(a,2,'nextSibling')",
1045         prev: "jQuery.nth(a,2,'previousSibling')",
1046         nextAll: "jQuery.dir(a,'nextSibling')",
1047         prevAll: "jQuery.dir(a,'previousSibling')",
1048         siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
1049         children: "jQuery.sibling(a.firstChild)",
1050         contents: "jQuery.nodeName(a,'iframe')?a.contentDocument||a.contentWindow.document:jQuery.makeArray(a.childNodes)"
1051 }, function(i,n){
1052         jQuery.fn[ i ] = function(a) {
1053                 var ret = jQuery.map(this,n);
1054                 if ( a && typeof a == "string" )
1055                         ret = jQuery.multiFilter(a,ret);
1056                 return this.pushStack( jQuery.unique(ret) );
1057         };
1058 });
1059
1060 jQuery.each({
1061         appendTo: "append",
1062         prependTo: "prepend",
1063         insertBefore: "before",
1064         insertAfter: "after",
1065         replaceAll: "replaceWith"
1066 }, function(i,n){
1067         jQuery.fn[ i ] = function(){
1068                 var a = arguments;
1069                 return this.each(function(){
1070                         for ( var j = 0, al = a.length; j < al; j++ )
1071                                 jQuery(a[j])[n]( this );
1072                 });
1073         };
1074 });
1075
1076 jQuery.each( {
1077         removeAttr: function( key ) {
1078                 jQuery.attr( this, key, "" );
1079                 this.removeAttribute( key );
1080         },
1081         addClass: function(c){
1082                 jQuery.className.add(this,c);
1083         },
1084         removeClass: function(c){
1085                 jQuery.className.remove(this,c);
1086         },
1087         toggleClass: function( c ){
1088                 jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this, c);
1089         },
1090         remove: function(a){
1091                 if ( !a || jQuery.filter( a, [this] ).r.length ) {
1092                         jQuery.removeData( this );
1093                         this.parentNode.removeChild( this );
1094                 }
1095         },
1096         empty: function() {
1097                 // Clean up the cache
1098                 jQuery("*", this).each(function(){ jQuery.removeData(this); });
1099
1100                 while ( this.firstChild )
1101                         this.removeChild( this.firstChild );
1102         }
1103 }, function(i,n){
1104         jQuery.fn[ i ] = function() {
1105                 return this.each( n, arguments );
1106         };
1107 });
1108
1109 jQuery.each( [ "Height", "Width" ], function(i,name){
1110         var n = name.toLowerCase();
1111
1112         jQuery.fn[ n ] = function(h) {
1113                 return this[0] == window ?
1114                         jQuery.browser.safari && self["inner" + name] ||
1115                         jQuery.boxModel && Math.max(document.documentElement["client" + name], document.body["client" + name]) ||
1116                         document.body["client" + name] :
1117
1118                         this[0] == document ?
1119                                 Math.max( document.body["scroll" + name], document.body["offset" + name] ) :
1120
1121                                 h == undefined ?
1122                                         ( this.length ? jQuery.css( this[0], n ) : null ) :
1123                                         this.css( n, h.constructor == String ? h : h + "px" );
1124         };
1125 });