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