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 || jQuery.nodeName(t, "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         eq: function(i){
 367                 return this.slice(i, i+1);
 368         },
 369
 370         slice: function() {
 371                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 372         },
 373
 374         map: function(fn) {
 375                 return this.pushStack(jQuery.map( this, function(elem,i){
 376                         return fn.call( elem, i, elem );
 377                 }));
 378         },
 379
 380         andSelf: function() {
 381                 return this.add( this.prevObject );
 382         },
 383
 384         domManip: function(args, table, dir, fn) {
 385                 var clone = this.length > 1, a;
 386
 387                 return this.each(function(){
 388                         if ( !a ) {
 389                                 a = jQuery.clean(args, this.ownerDocument);
 390                                 if ( dir < 0 )
 391                                         a.reverse();
 392                         }
 393
 394                         var obj = this;
 395
 396                         if ( table && jQuery.nodeName(this, "table") && jQuery.nodeName(a[0], "tr") )
 397                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild(document.createElement("tbody"));
 398
 399                         jQuery.each( a, function(){
 400                                 var elem = clone ? this.cloneNode(true) : this;
 401                                 if ( !evalScript(0, elem) )
 402                                         fn.call( obj, elem );
 403                         });
 404                 });
 405         }
 406 };
 407
 408 function evalScript(i, elem){
 409         var script = jQuery.nodeName(elem, "script");
 410
 411         if ( script ) {
 412                 if ( elem.src )
 413                         jQuery.ajax({ url: elem.src, async: false, dataType: "script" });
 414                 else
 415                         jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 416
 417                 if ( elem.parentNode )
 418                         elem.parentNode.removeChild(elem);
 419
 420         } else if ( elem.nodeType == 1 )
 421     jQuery("script", elem).each(evalScript);
 422
 423         return script;
 424 }
 425
 426 jQuery.extend = jQuery.fn.extend = function() {
 427         // copy reference to target object
 428         var target = arguments[0] || {}, a = 1, al = arguments.length, deep = false;
 429
 430         // Handle a deep copy situation
 431         if ( target.constructor == Boolean ) {
 432                 deep = target;
 433                 target = arguments[1] || {};
 434         }
 435
 436         // extend jQuery itself if only one argument is passed
 437         if ( al == 1 ) {
 438                 target = this;
 439                 a = 0;
 440         }
 441
 442         var prop;
 443
 444         for ( ; a < al; a++ )
 445                 // Only deal with non-null/undefined values
 446                 if ( (prop = arguments[a]) != null )
 447                         // Extend the base object
 448                         for ( var i in prop ) {
 449                                 // Prevent never-ending loop
 450                                 if ( target == prop[i] )
 451                                         continue;
 452
 453                                 // Recurse if we're merging object values
 454                                 if ( deep && typeof prop[i] == 'object' && target[i] )
 455                                         jQuery.extend( target[i], prop[i] );
 456
 457                                 // Don't bring in undefined values
 458                                 else if ( prop[i] != undefined )
 459                                         target[i] = prop[i];
 460                         }
 461
 462         // Return the modified object
 463         return target;
 464 };
 465
 466 var expando = "jQuery" + (new Date()).getTime(), uuid = 0, win = {};
 467
 468 jQuery.extend({
 469         noConflict: function(deep) {
 470                 window.$ = _$;
 471                 if ( deep )
 472                         window.jQuery = _jQuery;
 473                 return jQuery;
 474         },
 475
 476         // This may seem like some crazy code, but trust me when I say that this
 477         // is the only cross-browser way to do this. --John
 478         isFunction: function( fn ) {
 479                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 480                         fn.constructor != Array && /function/i.test( fn + "" );
 481         },
 482
 483         // check if an element is in a XML document
 484         isXMLDoc: function(elem) {
 485                 return elem.documentElement && !elem.body ||
 486                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 487         },
 488
 489         // Evalulates a script in a global context
 490         // Evaluates Async. in Safari 2 :-(
 491         globalEval: function( data ) {
 492                 data = jQuery.trim( data );
 493                 if ( data ) {
 494                         if ( window.execScript )
 495                                 window.execScript( data );
 496                         else if ( jQuery.browser.safari )
 497                                 // safari doesn't provide a synchronous global eval
 498                                 window.setTimeout( data, 0 );
 499                         else
 500                                 eval.call( window, data );
 501                 }
 502         },
 503
 504         nodeName: function( elem, name ) {
 505                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 506         },
 507
 508         cache: {},
 509
 510         data: function( elem, name, data ) {
 511                 elem = elem == window ? win : elem;
 512
 513                 var id = elem[ expando ];
 514
 515                 // Compute a unique ID for the element
 516                 if ( !id )
 517                         id = elem[ expando ] = ++uuid;
 518
 519                 // Only generate the data cache if we're
 520                 // trying to access or manipulate it
 521                 if ( name && !jQuery.cache[ id ] )
 522                         jQuery.cache[ id ] = {};
 523
 524                 // Prevent overriding the named cache with undefined values
 525                 if ( data != undefined )
 526                         jQuery.cache[ id ][ name ] = data;
 527
 528                 // Return the named cache data, or the ID for the element
 529                 return name ? jQuery.cache[ id ][ name ] : id;
 530         },
 531
 532         removeData: function( elem, name ) {
 533                 elem = elem == window ? win : elem;
 534
 535                 var id = elem[ expando ];
 536
 537                 // If we want to remove a specific section of the element's data
 538                 if ( name ) {
 539                         if ( jQuery.cache[ id ] ) {
 540                                 // Remove the section of cache data
 541                                 delete jQuery.cache[ id ][ name ];
 542
 543                                 // If we've removed all the data, remove the element's cache
 544                                 name = "";
 545                                 for ( name in jQuery.cache[ id ] ) break;
 546                                 if ( !name )
 547                                         jQuery.removeData( elem );
 548                         }
 549
 550                 // Otherwise, we want to remove all of the element's data
 551                 } else {
 552                         // Clean up the element expando
 553                         try {
 554                                 delete elem[ expando ];
 555                         } catch(e){
 556                                 // IE has trouble directly removing the expando
 557                                 // but it's ok with using removeAttribute
 558                                 if ( elem.removeAttribute )
 559                                         elem.removeAttribute( expando );
 560                         }
 561
 562                         // Completely remove the data cache
 563                         delete jQuery.cache[ id ];
 564                 }
 565         },
 566
 567         // args is for internal usage only
 568         each: function( obj, fn, args ) {
 569                 if ( args ) {
 570                         if ( obj.length == undefined )
 571                                 for ( var i in obj )
 572                                         fn.apply( obj[i], args );
 573                         else
 574                                 for ( var i = 0, ol = obj.length; i < ol; i++ )
 575                                         if ( fn.apply( obj[i], args ) === false ) break;
 576
 577                 // A special, fast, case for the most common use of each
 578                 } else {
 579                         if ( obj.length == undefined )
 580                                 for ( var i in obj )
 581                                         fn.call( obj[i], i, obj[i] );
 582                         else
 583                                 for ( var i = 0, ol = obj.length, val = obj[0];
 584                                         i < ol && fn.call(val,i,val) !== false; val = obj[++i] ){}
 585                 }
 586
 587                 return obj;
 588         },
 589
 590         prop: function(elem, value, type, index, prop){
 591                         // Handle executable functions
 592                         if ( jQuery.isFunction( value ) )
 593                                 value = value.call( elem, [index] );
 594
 595                         // exclude the following css properties to add px
 596                         var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 597
 598                         // Handle passing in a number to a CSS property
 599                         return value && value.constructor == Number && type == "curCSS" && !exclude.test(prop) ?
 600                                 value + "px" :
 601                                 value;
 602         },
 603
 604         className: {
 605                 // internal only, use addClass("class")
 606                 add: function( elem, c ){
 607                         jQuery.each( (c || "").split(/\s+/), function(i, cur){
 608                                 if ( !jQuery.className.has( elem.className, cur ) )
 609                                         elem.className += ( elem.className ? " " : "" ) + cur;
 610                         });
 611                 },
 612
 613                 // internal only, use removeClass("class")
 614                 remove: function( elem, c ){
 615                         elem.className = c != undefined ?
 616                                 jQuery.grep( elem.className.split(/\s+/), function(cur){
 617                                         return !jQuery.className.has( c, cur );
 618                                 }).join(" ") : "";
 619                 },
 620
 621                 // internal only, use is(".class")
 622                 has: function( t, c ) {
 623                         return jQuery.inArray( c, (t.className || t).toString().split(/\s+/) ) > -1;
 624                 }
 625         },
 626
 627         swap: function(e,o,f) {
 628                 for ( var i in o ) {
 629                         e.style["old"+i] = e.style[i];
 630                         e.style[i] = o[i];
 631                 }
 632                 f.apply( e, [] );
 633                 for ( var i in o )
 634                         e.style[i] = e.style["old"+i];
 635         },
 636
 637         css: function(e,p) {
 638                 if ( p == "height" || p == "width" ) {
 639                         var old = {}, oHeight, oWidth, d = ["Top","Bottom","Right","Left"];
 640
 641                         jQuery.each( d, function(){
 642                                 old["padding" + this] = 0;
 643                                 old["border" + this + "Width"] = 0;
 644                         });
 645
 646                         jQuery.swap( e, old, function() {
 647                                 if ( jQuery(e).is(':visible') ) {
 648                                         oHeight = e.offsetHeight;
 649                                         oWidth = e.offsetWidth;
 650                                 } else {
 651                                         e = jQuery(e.cloneNode(true))
 652                                                 .find(":radio").removeAttr("checked").end()
 653                                                 .css({
 654                                                         visibility: "hidden", position: "absolute", display: "block", right: "0", left: "0"
 655                                                 }).appendTo(e.parentNode)[0];
 656
 657                                         var parPos = jQuery.css(e.parentNode,"position") || "static";
 658                                         if ( parPos == "static" )
 659                                                 e.parentNode.style.position = "relative";
 660
 661                                         oHeight = e.clientHeight;
 662                                         oWidth = e.clientWidth;
 663
 664                                         if ( parPos == "static" )
 665                                                 e.parentNode.style.position = "static";
 666
 667                                         e.parentNode.removeChild(e);
 668                                 }
 669                         });
 670
 671                         return p == "height" ? oHeight : oWidth;
 672                 }
 673
 674                 return jQuery.curCSS( e, p );
 675         },
 676
 677         curCSS: function(elem, prop, force) {
 678                 var ret, stack = [], swap = [];
 679
 680                 // A helper method for determining if an element's values are broken
 681                 function color(a){
 682                         if ( !jQuery.browser.safari )
 683                                 return false;
 684
 685                         var ret = document.defaultView.getComputedStyle(a,null);
 686                         return !ret || ret.getPropertyValue("color") == "";
 687                 }
 688
 689                 if (prop == "opacity" && jQuery.browser.msie) {
 690                         ret = jQuery.attr(elem.style, "opacity");
 691                         return ret == "" ? "1" : ret;
 692                 }
 693
 694                 if (prop.match(/float/i))
 695                         prop = styleFloat;
 696
 697                 if (!force && elem.style[prop])
 698                         ret = elem.style[prop];
 699
 700                 else if (document.defaultView && document.defaultView.getComputedStyle) {
 701
 702                         if (prop.match(/float/i))
 703                                 prop = "float";
 704
 705                         prop = prop.replace(/([A-Z])/g,"-$1").toLowerCase();
 706                         var cur = document.defaultView.getComputedStyle(elem, null);
 707
 708                         if ( cur && !color(elem) )
 709                                 ret = cur.getPropertyValue(prop);
 710
 711                         // If the element isn't reporting its values properly in Safari
 712                         // then some display: none elements are involved
 713                         else {
 714                                 // Locate all of the parent display: none elements
 715                                 for ( var a = elem; a && color(a); a = a.parentNode )
 716                                         stack.unshift(a);
 717
 718                                 // Go through and make them visible, but in reverse
 719                                 // (It would be better if we knew the exact display type that they had)
 720                                 for ( a = 0; a < stack.length; a++ )
 721                                         if ( color(stack[a]) ) {
 722                                                 swap[a] = stack[a].style.display;
 723                                                 stack[a].style.display = "block";
 724                                         }
 725
 726                                 // Since we flip the display style, we have to handle that
 727                                 // one special, otherwise get the value
 728                                 ret = prop == "display" && swap[stack.length-1] != null ?
 729                                         "none" :
 730                                         document.defaultView.getComputedStyle(elem,null).getPropertyValue(prop) || "";
 731
 732                                 // Finally, revert the display styles back
 733                                 for ( a = 0; a < swap.length; a++ )
 734                                         if ( swap[a] != null )
 735                                                 stack[a].style.display = swap[a];
 736                         }
 737
 738                         if ( prop == "opacity" && ret == "" )
 739                                 ret = "1";
 740
 741                 } else if (elem.currentStyle) {
 742                         var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
 743                         ret = elem.currentStyle[prop] || elem.currentStyle[newProp];
 744
 745                         // From the awesome hack by Dean Edwards
 746                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 747
 748                         // If we're not dealing with a regular pixel number
 749                         // but a number that has a weird ending, we need to convert it to pixels
 750                         if ( !/^\d+(px)?$/i.test(ret) && /^\d/.test(ret) ) {
 751                                 var style = elem.style.left;
 752                                 var runtimeStyle = elem.runtimeStyle.left;
 753                                 elem.runtimeStyle.left = elem.currentStyle.left;
 754                                 elem.style.left = ret || 0;
 755                                 ret = elem.style.pixelLeft + "px";
 756                                 elem.style.left = style;
 757                                 elem.runtimeStyle.left = runtimeStyle;
 758                         }
 759                 }
 760
 761                 return ret;
 762         },
 763
 764         clean: function(a, doc) {
 765                 var r = [];
 766                 doc = doc || document;
 767
 768                 jQuery.each( a, function(i,arg){
 769                         if ( !arg ) return;
 770
 771                         if ( arg.constructor == Number )
 772                                 arg = arg.toString();
 773
 774                         // Convert html string into DOM nodes
 775                         if ( typeof arg == "string" ) {
 776                                 // Fix "XHTML"-style tags in all browsers
 777                                 arg = arg.replace(/(<(\w+)[^>]*?)\/>/g, function(m, all, tag){
 778                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area)$/i)? m : all+"></"+tag+">";
 779                                 });
 780
 781                                 // Trim whitespace, otherwise indexOf won't work as expected
 782                                 var s = jQuery.trim(arg).toLowerCase(), div = doc.createElement("div"), tb = [];
 783
 784                                 var wrap =
 785                                         // option or optgroup
 786                                         !s.indexOf("<opt") &&
 787                                         [1, "<select>", "</select>"] ||
 788
 789                                         !s.indexOf("<leg") &&
 790                                         [1, "<fieldset>", "</fieldset>"] ||
 791
 792                                         s.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 793                                         [1, "<table>", "</table>"] ||
 794
 795                                         !s.indexOf("<tr") &&
 796                                         [2, "<table><tbody>", "</tbody></table>"] ||
 797
 798                                         // <thead> matched above
 799                                         (!s.indexOf("<td") || !s.indexOf("<th")) &&
 800                                         [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
 801
 802                                         !s.indexOf("<col") &&
 803                                         [2, "<table><tbody></tbody><colgroup>", "</colgroup></table>"] ||
 804
 805                                         // IE can't serialize <link> and <script> tags normally
 806                                         jQuery.browser.msie &&
 807                                         [1, "div<div>", "</div>"] ||
 808
 809                                         [0,"",""];
 810
 811                                 // Go to html and back, then peel off extra wrappers
 812                                 div.innerHTML = wrap[1] + arg + wrap[2];
 813
 814                                 // Move to the right depth
 815                                 while ( wrap[0]-- )
 816                                         div = div.lastChild;
 817
 818                                 // Remove IE's autoinserted <tbody> from table fragments
 819                                 if ( jQuery.browser.msie ) {
 820
 821                                         // String was a <table>, *may* have spurious <tbody>
 822                                         if ( !s.indexOf("<table") && s.indexOf("<tbody") < 0 )
 823                                                 tb = div.firstChild && div.firstChild.childNodes;
 824
 825                                         // String was a bare <thead> or <tfoot>
 826                                         else if ( wrap[1] == "<table>" && s.indexOf("<tbody") < 0 )
 827                                                 tb = div.childNodes;
 828
 829                                         for ( var n = tb.length-1; n >= 0 ; --n )
 830                                                 if ( jQuery.nodeName(tb[n], "tbody") && !tb[n].childNodes.length )
 831                                                         tb[n].parentNode.removeChild(tb[n]);
 832
 833                                         // IE completely kills leading whitespace when innerHTML is used
 834                                         if ( /^\s/.test(arg) )
 835                                                 div.insertBefore( doc.createTextNode( arg.match(/^\s*/)[0] ), div.firstChild );
 836
 837                                 }
 838
 839                                 arg = jQuery.makeArray( div.childNodes );
 840                         }
 841
 842                         if ( 0 === arg.length && (!jQuery.nodeName(arg, "form") && !jQuery.nodeName(arg, "select")) )
 843                                 return;
 844
 845                         if ( arg[0] == undefined || jQuery.nodeName(arg, "form") || arg.options )
 846                                 r.push( arg );
 847                         else
 848                                 r = jQuery.merge( r, arg );
 849
 850                 });
 851
 852                 return r;
 853         },
 854
 855         attr: function(elem, name, value){
 856                 var fix = jQuery.isXMLDoc(elem) ? {} : jQuery.props;
 857
 858                 // Safari mis-reports the default selected property of a hidden option
 859                 // Accessing the parent's selectedIndex property fixes it
 860                 if ( name == "selected" && jQuery.browser.safari )
 861                         elem.parentNode.selectedIndex;
 862
 863                 // Certain attributes only work when accessed via the old DOM 0 way
 864                 if ( fix[name] ) {
 865                         if ( value != undefined ) elem[fix[name]] = value;
 866                         return elem[fix[name]];
 867                 } else if ( jQuery.browser.msie && name == "style" )
 868                         return jQuery.attr( elem.style, "cssText", value );
 869
 870                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName(elem, "form") && (name == "action" || name == "method") )
 871                         return elem.getAttributeNode(name).nodeValue;
 872
 873                 // IE elem.getAttribute passes even for style
 874                 else if ( elem.tagName ) {
 875
 876                         if ( value != undefined ) {
 877                                 if ( name == "type" && jQuery.nodeName(elem,"input") && elem.parentNode )
 878                                         throw "type property can't be changed";
 879                                 elem.setAttribute( name, value );
 880                         }
 881
 882                         if ( jQuery.browser.msie && /href|src/.test(name) && !jQuery.isXMLDoc(elem) )
 883                                 return elem.getAttribute( name, 2 );
 884
 885                         return elem.getAttribute( name );
 886
 887                 // elem is actually elem.style ... set the style
 888                 } else {
 889                         // IE actually uses filters for opacity
 890                         if ( name == "opacity" && jQuery.browser.msie ) {
 891                                 if ( value != undefined ) {
 892                                         // IE has trouble with opacity if it does not have layout
 893                                         // Force it by setting the zoom level
 894                                         elem.zoom = 1;
 895
 896                                         // Set the alpha filter to set the opacity
 897                                         elem.filter = (elem.filter || "").replace(/alpha\([^)]*\)/,"") +
 898                                                 (parseFloat(value).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
 899                                 }
 900
 901                                 return elem.filter ?
 902                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() : "";
 903                         }
 904                         name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
 905                         if ( value != undefined ) elem[name] = value;
 906                         return elem[name];
 907                 }
 908         },
 909
 910         trim: function(t){
 911                 return (t||"").replace(/^\s+|\s+$/g, "");
 912         },
 913
 914         makeArray: function( a ) {
 915                 var r = [];
 916
 917                 // Need to use typeof to fight Safari childNodes crashes
 918                 if ( typeof a != "array" )
 919                         for ( var i = 0, al = a.length; i < al; i++ )
 920                                 r.push( a[i] );
 921                 else
 922                         r = a.slice( 0 );
 923
 924                 return r;
 925         },
 926
 927         inArray: function( b, a ) {
 928                 for ( var i = 0, al = a.length; i < al; i++ )
 929                         if ( a[i] == b )
 930                                 return i;
 931                 return -1;
 932         },
 933
 934         merge: function(first, second) {
 935                 // We have to loop this way because IE & Opera overwrite the length
 936                 // expando of getElementsByTagName
 937
 938                 // Also, we need to make sure that the correct elements are being returned
 939                 // (IE returns comment nodes in a '*' query)
 940                 if ( jQuery.browser.msie ) {
 941                         for ( var i = 0; second[i]; i++ )
 942                                 if ( second[i].nodeType != 8 )
 943                                         first.push(second[i]);
 944                 } else
 945                         for ( var i = 0; second[i]; i++ )
 946                                 first.push(second[i]);
 947
 948                 return first;
 949         },
 950
 951         unique: function(first) {
 952                 var r = [], done = {};
 953
 954                 try {
 955                         for ( var i = 0, fl = first.length; i < fl; i++ ) {
 956                                 var id = jQuery.data(first[i]);
 957                                 if ( !done[id] ) {
 958                                         done[id] = true;
 959                                         r.push(first[i]);
 960                                 }
 961                         }
 962                 } catch(e) {
 963                         r = first;
 964                 }
 965
 966                 return r;
 967         },
 968
 969         grep: function(elems, fn, inv) {
 970                 // If a string is passed in for the function, make a function
 971                 // for it (a handy shortcut)
 972                 if ( typeof fn == "string" )
 973                         fn = eval("false||function(a,i){return " + fn + "}");
 974
 975                 var result = [];
 976
 977                 // Go through the array, only saving the items
 978                 // that pass the validator function
 979                 for ( var i = 0, el = elems.length; i < el; i++ )
 980                         if ( !inv && fn(elems[i],i) || inv && !fn(elems[i],i) )
 981                                 result.push( elems[i] );
 982
 983                 return result;
 984         },
 985
 986         map: function(elems, fn) {
 987                 // If a string is passed in for the function, make a function
 988                 // for it (a handy shortcut)
 989                 if ( typeof fn == "string" )
 990                         fn = eval("false||function(a){return " + fn + "}");
 991
 992                 var result = [];
 993
 994                 // Go through the array, translating each of the items to their
 995                 // new value (or values).
 996                 for ( var i = 0, el = elems.length; i < el; i++ ) {
 997                         var val = fn(elems[i],i);
 998
 999                         if ( val !== null && val != undefined ) {
1000                                 if ( val.constructor != Array ) val = [val];
1001                                 result = result.concat( val );
1002                         }
1003                 }
1004
1005                 return result;
1006         }
1007 });
1008
1009 var userAgent = navigator.userAgent.toLowerCase();
1010
1011 // Figure out what browser is being used
1012 jQuery.browser = {
1013         version: (userAgent.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1],
1014         safari: /webkit/.test(userAgent),
1015         opera: /opera/.test(userAgent),
1016         msie: /msie/.test(userAgent) && !/opera/.test(userAgent),
1017         mozilla: /mozilla/.test(userAgent) && !/(compatible|webkit)/.test(userAgent)
1018 };
1019
1020 var styleFloat = jQuery.browser.msie ? "styleFloat" : "cssFloat";
1021
1022 jQuery.extend({
1023         // Check to see if the W3C box model is being used
1024         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1025
1026         styleFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
1027
1028         props: {
1029                 "for": "htmlFor",
1030                 "class": "className",
1031                 "float": styleFloat,
1032                 cssFloat: styleFloat,
1033                 styleFloat: styleFloat,
1034                 innerHTML: "innerHTML",
1035                 className: "className",
1036                 value: "value",
1037                 disabled: "disabled",
1038                 checked: "checked",
1039                 readonly: "readOnly",
1040                 selected: "selected",
1041                 maxlength: "maxLength"
1042         }
1043 });
1044
1045 jQuery.each({
1046         parent: "a.parentNode",
1047         parents: "jQuery.dir(a,'parentNode')",
1048         next: "jQuery.nth(a,2,'nextSibling')",
1049         prev: "jQuery.nth(a,2,'previousSibling')",
1050         nextAll: "jQuery.dir(a,'nextSibling')",
1051         prevAll: "jQuery.dir(a,'previousSibling')",
1052         siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
1053         children: "jQuery.sibling(a.firstChild)",
1054         contents: "jQuery.nodeName(a,'iframe')?a.contentDocument||a.contentWindow.document:jQuery.makeArray(a.childNodes)"
1055 }, function(i,n){
1056         jQuery.fn[ i ] = function(a) {
1057                 var ret = jQuery.map(this,n);
1058                 if ( a && typeof a == "string" )
1059                         ret = jQuery.multiFilter(a,ret);
1060                 return this.pushStack( jQuery.unique(ret) );
1061         };
1062 });
1063
1064 jQuery.each({
1065         appendTo: "append",
1066         prependTo: "prepend",
1067         insertBefore: "before",
1068         insertAfter: "after",
1069         replaceAll: "replaceWith"
1070 }, function(i,n){
1071         jQuery.fn[ i ] = function(){
1072                 var a = arguments;
1073                 return this.each(function(){
1074                         for ( var j = 0, al = a.length; j < al; j++ )
1075                                 jQuery(a[j])[n]( this );
1076                 });
1077         };
1078 });
1079
1080 jQuery.each( {
1081         removeAttr: function( key ) {
1082                 jQuery.attr( this, key, "" );
1083                 this.removeAttribute( key );
1084         },
1085         addClass: function(c){
1086                 jQuery.className.add(this,c);
1087         },
1088         removeClass: function(c){
1089                 jQuery.className.remove(this,c);
1090         },
1091         toggleClass: function( c ){
1092                 jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this, c);
1093         },
1094         remove: function(a){
1095                 if ( !a || jQuery.filter( a, [this] ).r.length ) {
1096                         jQuery.removeData( this );
1097                         this.parentNode.removeChild( this );
1098                 }
1099         },
1100         empty: function() {
1101                 // Clean up the cache
1102                 jQuery("*", this).each(function(){ jQuery.removeData(this); });
1103
1104                 while ( this.firstChild )
1105                         this.removeChild( this.firstChild );
1106         }
1107 }, function(i,n){
1108         jQuery.fn[ i ] = function() {
1109                 return this.each( n, arguments );
1110         };
1111 });
1112
1113 jQuery.each( [ "Height", "Width" ], function(i,name){
1114         var n = name.toLowerCase();
1115
1116         jQuery.fn[ n ] = function(h) {
1117                 // Get window width or height
1118                 return this[0] == window ?
1119                         // Opera reports document.body.client[Width/Height] properly in both quirks and standards
1120                         jQuery.browser.opera && document.body["client" + name] ||
1121
1122                         // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
1123                         jQuery.browser.safari && self["inner" + name] ||
1124
1125                         // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
1126                         document.compatMode == "CSS1Compat" && document.documentElement["client" + name] || document.body["client" + name] :
1127
1128                 // Get document width or height
1129                         this[0] == document ?
1130                                 // Either scroll[Width/Height] or offset[Width/Height], whichever is greater (Mozilla reports scrollWidth the same as offsetWidth)
1131                                 Math.max( document.body["scroll" + name], document.body["offset" + name] ) :
1132
1133                 // Get or set width or height on the element
1134                                 h == undefined ?
1135                                         // Get width or height on the element
1136                                         ( this.length ? jQuery.css( this[0], n ) : null ) :
1137                                         // Set the width or height on the element (default to pixels if value is unitless)
1138                                         this.css( n, h.constructor == String ? h : h + "px" );
1139         };
1140 });