src/core.js

   1 /*
   2  * jQuery @VERSION - New Wave Javascript
   3  *
   4  * Copyright (c) 2008 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 var _jQuery = window.jQuery,
  14 // Map over the $ in case of overwrite
  15         _$ = window.$;
  16
  17 var jQuery = window.jQuery = window.$ = function( selector, context ) {
  18         // The jQuery object is actually just the init constructor 'enhanced'
  19         return new jQuery.fn.init( selector, context );
  20 };
  21
  22 // A simple way to check for HTML strings or ID strings
  23 // (both of which we optimize for)
  24 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
  25
  26 // Is it a simple selector
  27         isSimple = /^.[^:#\[\.]*$/,
  28
  29 // Will speed up references to undefined, and allows munging its name.
  30         undefined;
  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 $(DOMElement)
  38                 if ( selector.nodeType ) {
  39                         this[0] = selector;
  40                         this.length = 1;
  41                         return this;
  42                 }
  43                 // Handle HTML strings
  44                 if ( typeof selector == "string" ) {
  45                         // Are we dealing with HTML string or an ID?
  46                         var match = quickExpr.exec( selector );
  47
  48                         // Verify a match, and that no context was specified for #id
  49                         if ( match && (match[1] || !context) ) {
  50
  51                                 // HANDLE: $(html) -> $(array)
  52                                 if ( match[1] )
  53                                         selector = jQuery.clean( [ match[1] ], context );
  54
  55                                 // HANDLE: $("#id")
  56                                 else {
  57                                         var elem = document.getElementById( match[3] );
  58
  59                                         // Make sure an element was located
  60                                         if ( elem ){
  61                                                 // Handle the case where IE and Opera return items
  62                                                 // by name instead of ID
  63                                                 if ( elem.id != match[3] )
  64                                                         return jQuery().find( selector );
  65
  66                                                 // Otherwise, we inject the element directly into the jQuery object
  67                                                 return jQuery( elem );
  68                                         }
  69                                         selector = [];
  70                                 }
  71
  72                         // HANDLE: $(expr, [context])
  73                         // (which is just equivalent to: $(content).find(expr)
  74                         } else
  75                                 return jQuery( context ).find( selector );
  76
  77                 // HANDLE: $(function)
  78                 // Shortcut for document ready
  79                 } else if ( jQuery.isFunction( selector ) )
  80                         return jQuery( document )[ jQuery.fn.ready ? "ready" : "load" ]( selector );
  81
  82                 return this.setArray(jQuery.makeArray(selector));
  83         },
  84
  85         // The current version of jQuery being used
  86         jquery: "@VERSION",
  87
  88         // The number of elements contained in the matched element set
  89         size: function() {
  90                 return this.length;
  91         },
  92
  93         // Get the Nth element in the matched element set OR
  94         // Get the whole matched element set as a clean array
  95         get: function( num ) {
  96                 return num == undefined ?
  97
  98                         // Return a 'clean' array
  99                         jQuery.makeArray( this ) :
 100
 101                         // Return just the object
 102                         this[ num ];
 103         },
 104
 105         // Take an array of elements and push it onto the stack
 106         // (returning the new matched element set)
 107         pushStack: function( elems ) {
 108                 // Build a new jQuery matched element set
 109                 var ret = jQuery( elems );
 110
 111                 // Add the old object onto the stack (as a reference)
 112                 ret.prevObject = this;
 113
 114                 // Return the newly-formed element set
 115                 return ret;
 116         },
 117
 118         // Force the current matched set of elements to become
 119         // the specified array of elements (destroying the stack in the process)
 120         // You should use pushStack() in order to do this, but maintain the stack
 121         setArray: function( elems ) {
 122                 // Resetting the length to 0, then using the native Array push
 123                 // is a super-fast way to populate an object with array-like properties
 124                 this.length = 0;
 125                 Array.prototype.push.apply( this, elems );
 126
 127                 return this;
 128         },
 129
 130         // Execute a callback for every element in the matched set.
 131         // (You can seed the arguments with an array of args, but this is
 132         // only used internally.)
 133         each: function( callback, args ) {
 134                 return jQuery.each( this, callback, args );
 135         },
 136
 137         // Determine the position of an element within
 138         // the matched set of elements
 139         index: function( elem ) {
 140                 var ret = -1;
 141
 142                 // Locate the position of the desired element
 143                 return jQuery.inArray(
 144                         // If it receives a jQuery object, the first element is used
 145                         elem && elem.jquery ? elem[0] : elem
 146                 , this );
 147         },
 148
 149         attr: function( name, value, type ) {
 150                 var options = name;
 151
 152                 // Look for the case where we're accessing a style value
 153                 if ( name.constructor == String )
 154                         if ( value === undefined )
 155                                 return this[0] && jQuery[ type || "attr" ]( this[0], name );
 156
 157                         else {
 158                                 options = {};
 159                                 options[ name ] = value;
 160                         }
 161
 162                 // Check to see if we're setting style values
 163                 return this.each(function(i){
 164                         // Set all the styles
 165                         for ( name in options )
 166                                 jQuery.attr(
 167                                         type ?
 168                                                 this.style :
 169                                                 this,
 170                                         name, jQuery.prop( this, options[ name ], type, i, name )
 171                                 );
 172                 });
 173         },
 174
 175         css: function( key, value ) {
 176                 // ignore negative width and height values
 177                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 178                         value = undefined;
 179                 return this.attr( key, value, "curCSS" );
 180         },
 181
 182         text: function( text ) {
 183                 if ( typeof text != "object" && text != null )
 184                         return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
 185
 186                 var ret = "";
 187
 188                 jQuery.each( text || this, function(){
 189                         jQuery.each( this.childNodes, function(){
 190                                 if ( this.nodeType != 8 )
 191                                         ret += this.nodeType != 1 ?
 192                                                 this.nodeValue :
 193                                                 jQuery.fn.text( [ this ] );
 194                         });
 195                 });
 196
 197                 return ret;
 198         },
 199
 200         wrapAll: function( html ) {
 201                 if ( this[0] )
 202                         // The elements to wrap the target around
 203                         jQuery( html, this[0].ownerDocument )
 204                                 .clone()
 205                                 .insertBefore( this[0] )
 206                                 .map(function(){
 207                                         var elem = this;
 208
 209                                         while ( elem.firstChild )
 210                                                 elem = elem.firstChild;
 211
 212                                         return elem;
 213                                 })
 214                                 .append(this);
 215
 216                 return this;
 217         },
 218
 219         wrapInner: function( html ) {
 220                 return this.each(function(){
 221                         jQuery( this ).contents().wrapAll( html );
 222                 });
 223         },
 224
 225         wrap: function( html ) {
 226                 return this.each(function(){
 227                         jQuery( this ).wrapAll( html );
 228                 });
 229         },
 230
 231         append: function() {
 232                 return this.domManip(arguments, true, false, function(elem){
 233                         if (this.nodeType == 1)
 234                                 this.appendChild( elem );
 235                 });
 236         },
 237
 238         prepend: function() {
 239                 return this.domManip(arguments, true, true, function(elem){
 240                         if (this.nodeType == 1)
 241                                 this.insertBefore( elem, this.firstChild );
 242                 });
 243         },
 244
 245         before: function() {
 246                 return this.domManip(arguments, false, false, function(elem){
 247                         this.parentNode.insertBefore( elem, this );
 248                 });
 249         },
 250
 251         after: function() {
 252                 return this.domManip(arguments, false, true, function(elem){
 253                         this.parentNode.insertBefore( elem, this.nextSibling );
 254                 });
 255         },
 256
 257         end: function() {
 258                 return this.prevObject || jQuery( [] );
 259         },
 260
 261         find: function( selector ) {
 262                 var elems = jQuery.map(this, function(elem){
 263                         return jQuery.find( selector, elem );
 264                 });
 265
 266                 return this.pushStack( /[^+>] [^+>]/.test( selector ) ?
 267                         jQuery.unique( elems ) :
 268                         elems );
 269         },
 270
 271         clone: function( events ) {
 272                 // Do the clone
 273                 var ret = this.map(function(){
 274                         if ( jQuery.browser.msie && !jQuery.isXMLDoc(this) ) {
 275                                 // IE copies events bound via attachEvent when
 276                                 // using cloneNode. Calling detachEvent on the
 277                                 // clone will also remove the events from the orignal
 278                                 // In order to get around this, we use innerHTML.
 279                                 // Unfortunately, this means some modifications to
 280                                 // attributes in IE that are actually only stored
 281                                 // as properties will not be copied (such as the
 282                                 // the name attribute on an input).
 283                                 var clone = this.cloneNode(true),
 284                                         container = document.createElement("div");
 285                                 container.appendChild(clone);
 286                                 return jQuery.clean([container.innerHTML])[0];
 287                         } else
 288                                 return this.cloneNode(true);
 289                 });
 290
 291                 // Need to set the expando to null on the cloned set if it exists
 292                 // removeData doesn't work here, IE removes it from the original as well
 293                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 294                 var clone = ret.find("*").andSelf().each(function(){
 295                         if ( this[ expando ] != undefined )
 296                                 this[ expando ] = null;
 297                 });
 298
 299                 // Copy the events from the original to the clone
 300                 if ( events === true )
 301                         this.find("*").andSelf().each(function(i){
 302                                 if (this.nodeType == 3)
 303                                         return;
 304                                 var events = jQuery.data( this, "events" );
 305
 306                                 for ( var type in events )
 307                                         for ( var handler in events[ type ] )
 308                                                 jQuery.event.add( clone[ i ], type, events[ type ][ handler ], events[ type ][ handler ].data );
 309                         });
 310
 311                 // Return the cloned set
 312                 return ret;
 313         },
 314
 315         filter: function( selector ) {
 316                 return this.pushStack(
 317                         jQuery.isFunction( selector ) &&
 318                         jQuery.grep(this, function(elem, i){
 319                                 return selector.call( elem, i );
 320                         }) ||
 321
 322                         jQuery.multiFilter( selector, this ) );
 323         },
 324
 325         not: function( selector ) {
 326                 if ( selector.constructor == String )
 327                         // test special case where just one selector is passed in
 328                         if ( isSimple.test( selector ) )
 329                                 return this.pushStack( jQuery.multiFilter( selector, this, true ) );
 330                         else
 331                                 selector = jQuery.multiFilter( selector, this );
 332
 333                 var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
 334                 return this.filter(function() {
 335                         return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
 336                 });
 337         },
 338
 339         add: function( selector ) {
 340                 return this.pushStack( jQuery.unique( jQuery.merge(
 341                         this.get(),
 342                         typeof selector == 'string' ?
 343                                 jQuery( selector ) :
 344                                 jQuery.makeArray( selector )
 345                 )));
 346         },
 347
 348         is: function( selector ) {
 349                 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
 350         },
 351
 352         hasClass: function( selector ) {
 353                 return this.is( "." + selector );
 354         },
 355
 356         val: function( value ) {
 357                 if ( value == undefined ) {
 358                         var elem = this[0];
 359
 360                         if ( elem ) {
 361                                 if( jQuery.nodeName( elem, 'option' ) )
 362                                         return (elem.attributes.value || {}).specified ? elem.value : elem.text;
 363
 364                                 // We need to handle select boxes special
 365                                 if ( jQuery.nodeName( elem, "select" ) ) {
 366                                         var index = elem.selectedIndex,
 367                                                 values = [],
 368                                                 options = elem.options,
 369                                                 one = elem.type == "select-one";
 370
 371                                         // Nothing was selected
 372                                         if ( index < 0 )
 373                                                 return null;
 374
 375                                         // Loop through all the selected options
 376                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 377                                                 var option = options[ i ];
 378
 379                                                 if ( option.selected ) {
 380                                                         // Get the specifc value for the option
 381                                                         value = jQuery(option).val();
 382
 383                                                         // We don't need an array for one selects
 384                                                         if ( one )
 385                                                                 return value;
 386
 387                                                         // Multi-Selects return an array
 388                                                         values.push( value );
 389                                                 }
 390                                         }
 391
 392                                         return values;
 393                                 }
 394
 395                                 // Everything else, we just grab the value
 396                                 return (elem.value || "").replace(/\r/g, "");
 397
 398                         }
 399
 400                         return undefined;
 401                 }
 402
 403                 if( value.constructor == Number )
 404                         value += '';
 405
 406                 return this.each(function(){
 407                         if ( this.nodeType != 1 )
 408                                 return;
 409
 410                         if ( value.constructor == Array && /radio|checkbox/.test( this.type ) )
 411                                 this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 412                                         jQuery.inArray(this.name, value) >= 0);
 413
 414                         else if ( jQuery.nodeName( this, "select" ) ) {
 415                                 var values = jQuery.makeArray(value);
 416
 417                                 jQuery( "option", this ).each(function(){
 418                                         this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 419                                                 jQuery.inArray( this.text, values ) >= 0);
 420                                 });
 421
 422                                 if ( !values.length )
 423                                         this.selectedIndex = -1;
 424
 425                         } else
 426                                 this.value = value;
 427                 });
 428         },
 429
 430         html: function( value ) {
 431                 return value == undefined ?
 432                         (this[0] ?
 433                                 this[0].innerHTML :
 434                                 null) :
 435                         this.empty().append( value );
 436         },
 437
 438         replaceWith: function( value ) {
 439                 return this.after( value ).remove();
 440         },
 441
 442         eq: function( i ) {
 443                 return this.slice( i, +i + 1 );
 444         },
 445
 446         slice: function() {
 447                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 448         },
 449
 450         map: function( callback ) {
 451                 return this.pushStack( jQuery.map(this, function(elem, i){
 452                         return callback.call( elem, i, elem );
 453                 }));
 454         },
 455
 456         andSelf: function() {
 457                 return this.add( this.prevObject );
 458         },
 459
 460         data: function( key, value ){
 461                 var parts = key.split(".");
 462                 parts[1] = parts[1] ? "." + parts[1] : "";
 463
 464                 if ( value === undefined ) {
 465                         var data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]);
 466
 467                         if ( data === undefined && this.length )
 468                                 data = jQuery.data( this[0], key );
 469
 470                         return data === undefined && parts[1] ?
 471                                 this.data( parts[0] ) :
 472                                 data;
 473                 } else
 474                         return this.trigger("setData" + parts[1] + "!", [parts[0], value]).each(function(){
 475                                 jQuery.data( this, key, value );
 476                         });
 477         },
 478
 479         removeData: function( key ){
 480                 return this.each(function(){
 481                         jQuery.removeData( this, key );
 482                 });
 483         },
 484
 485         domManip: function( args, table, reverse, callback ) {
 486                 var clone = this.length > 1, elems;
 487
 488                 return this.each(function(){
 489                         if ( !elems ) {
 490                                 elems = jQuery.clean( args, this.ownerDocument );
 491
 492                                 if ( reverse )
 493                                         elems.reverse();
 494                         }
 495
 496                         var obj = this;
 497
 498                         if ( table && jQuery.nodeName( this, "table" ) && jQuery.nodeName( elems[0], "tr" ) )
 499                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild( this.ownerDocument.createElement("tbody") );
 500
 501                         var scripts = jQuery( [] );
 502
 503                         jQuery.each(elems, function(){
 504                                 var elem = clone ?
 505                                         jQuery( this ).clone( true )[0] :
 506                                         this;
 507
 508                                 // execute all scripts after the elements have been injected
 509                                 if ( jQuery.nodeName( elem, "script" ) )
 510                                         scripts = scripts.add( elem );
 511                                 else {
 512                                         // Remove any inner scripts for later evaluation
 513                                         if ( elem.nodeType == 1 )
 514                                                 scripts = scripts.add( jQuery( "script", elem ).remove() );
 515
 516                                         // Inject the elements into the document
 517                                         callback.call( obj, elem );
 518                                 }
 519                         });
 520
 521                         scripts.each( evalScript );
 522                 });
 523         }
 524 };
 525
 526 // Give the init function the jQuery prototype for later instantiation
 527 jQuery.fn.init.prototype = jQuery.fn;
 528
 529 function evalScript( i, elem ) {
 530         if ( elem.src )
 531                 jQuery.ajax({
 532                         url: elem.src,
 533                         async: false,
 534                         dataType: "script"
 535                 });
 536
 537         else
 538                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 539
 540         if ( elem.parentNode )
 541                 elem.parentNode.removeChild( elem );
 542 }
 543
 544 function now(){
 545         return +new Date;
 546 }
 547
 548 jQuery.extend = jQuery.fn.extend = function() {
 549         // copy reference to target object
 550         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 551
 552         // Handle a deep copy situation
 553         if ( target.constructor == Boolean ) {
 554                 deep = target;
 555                 target = arguments[1] || {};
 556                 // skip the boolean and the target
 557                 i = 2;
 558         }
 559
 560         // Handle case when target is a string or something (possible in deep copy)
 561         if ( typeof target != "object" && typeof target != "function" )
 562                 target = {};
 563
 564         // extend jQuery itself if only one argument is passed
 565         if ( length == i ) {
 566                 target = this;
 567                 --i;
 568         }
 569
 570         for ( ; i < length; i++ )
 571                 // Only deal with non-null/undefined values
 572                 if ( (options = arguments[ i ]) != null )
 573                         // Extend the base object
 574                         for ( var name in options ) {
 575                                 var src = target[ name ], copy = options[ name ];
 576
 577                                 // Prevent never-ending loop
 578                                 if ( target === copy )
 579                                         continue;
 580
 581                                 // Recurse if we're merging object values
 582                                 if ( deep && copy && typeof copy == "object" && !copy.nodeType )
 583                                         target[ name ] = jQuery.extend( deep,
 584                                                 // Never move original objects, clone them
 585                                                 src || ( copy.length != null ? [ ] : { } )
 586                                         , copy );
 587
 588                                 // Don't bring in undefined values
 589                                 else if ( copy !== undefined )
 590                                         target[ name ] = copy;
 591
 592                         }
 593
 594         // Return the modified object
 595         return target;
 596 };
 597
 598 var expando = "jQuery" + now(), uuid = 0, windowData = {},
 599         // exclude the following css properties to add px
 600         exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
 601         // cache defaultView
 602         defaultView = document.defaultView || {};
 603
 604 jQuery.extend({
 605         noConflict: function( deep ) {
 606                 window.$ = _$;
 607
 608                 if ( deep )
 609                         window.jQuery = _jQuery;
 610
 611                 return jQuery;
 612         },
 613
 614         // See test/unit/core.js for details concerning this function.
 615         // Since version 1.3, DOM methods and functions like alert
 616         // aren't supported. They return false on IE (#2968).
 617
 618         // Memory leaks appear in IE6 when applying instanceof
 619         // to the window, document or any other COM object (#3485)
 620         // http://ajaxian.com/archives/working-aroung-the-instanceof-memory-leak
 621         isFunction: function( fn ) {
 622                 return !!fn && !!fn.hasOwnProperty && fn instanceof Function;
 623         },
 624
 625         // check if an element is in a (or is an) XML document
 626         isXMLDoc: function( elem ) {
 627                 return elem.documentElement && !elem.body ||
 628                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 629         },
 630
 631         // Evalulates a script in a global context
 632         globalEval: function( data ) {
 633                 data = jQuery.trim( data );
 634
 635                 if ( data ) {
 636                         // Inspired by code by Andrea Giammarchi
 637                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 638                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 639                                 script = document.createElement("script");
 640
 641                         script.type = "text/javascript";
 642                         if ( jQuery.browser.msie )
 643                                 script.text = data;
 644                         else
 645                                 script.appendChild( document.createTextNode( data ) );
 646
 647                         // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
 648                         // This arises when a base node is used (#2709).
 649                         head.insertBefore( script, head.firstChild );
 650                         head.removeChild( script );
 651                 }
 652         },
 653
 654         nodeName: function( elem, name ) {
 655                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 656         },
 657
 658         cache: {},
 659
 660         data: function( elem, name, data ) {
 661                 elem = elem == window ?
 662                         windowData :
 663                         elem;
 664
 665                 var id = elem[ expando ];
 666
 667                 // Compute a unique ID for the element
 668                 if ( !id )
 669                         id = elem[ expando ] = ++uuid;
 670
 671                 // Only generate the data cache if we're
 672                 // trying to access or manipulate it
 673                 if ( name && !jQuery.cache[ id ] )
 674                         jQuery.cache[ id ] = {};
 675
 676                 // Prevent overriding the named cache with undefined values
 677                 if ( data !== undefined )
 678                         jQuery.cache[ id ][ name ] = data;
 679
 680                 // Return the named cache data, or the ID for the element
 681                 return name ?
 682                         jQuery.cache[ id ][ name ] :
 683                         id;
 684         },
 685
 686         removeData: function( elem, name ) {
 687                 elem = elem == window ?
 688                         windowData :
 689                         elem;
 690
 691                 var id = elem[ expando ];
 692
 693                 // If we want to remove a specific section of the element's data
 694                 if ( name ) {
 695                         if ( jQuery.cache[ id ] ) {
 696                                 // Remove the section of cache data
 697                                 delete jQuery.cache[ id ][ name ];
 698
 699                                 // If we've removed all the data, remove the element's cache
 700                                 name = "";
 701
 702                                 for ( name in jQuery.cache[ id ] )
 703                                         break;
 704
 705                                 if ( !name )
 706                                         jQuery.removeData( elem );
 707                         }
 708
 709                 // Otherwise, we want to remove all of the element's data
 710                 } else {
 711                         // Clean up the element expando
 712                         try {
 713                                 delete elem[ expando ];
 714                         } catch(e){
 715                                 // IE has trouble directly removing the expando
 716                                 // but it's ok with using removeAttribute
 717                                 if ( elem.removeAttribute )
 718                                         elem.removeAttribute( expando );
 719                         }
 720
 721                         // Completely remove the data cache
 722                         delete jQuery.cache[ id ];
 723                 }
 724         },
 725
 726         // args is for internal usage only
 727         each: function( object, callback, args ) {
 728                 var name, i = 0, length = object.length;
 729
 730                 if ( args ) {
 731                         if ( length == undefined ) {
 732                                 for ( name in object )
 733                                         if ( callback.apply( object[ name ], args ) === false )
 734                                                 break;
 735                         } else
 736                                 for ( ; i < length; )
 737                                         if ( callback.apply( object[ i++ ], args ) === false )
 738                                                 break;
 739
 740                 // A special, fast, case for the most common use of each
 741                 } else {
 742                         if ( length == undefined ) {
 743                                 for ( name in object )
 744                                         if ( callback.call( object[ name ], name, object[ name ] ) === false )
 745                                                 break;
 746                         } else
 747                                 for ( var value = object[0];
 748                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 749                 }
 750
 751                 return object;
 752         },
 753
 754         prop: function( elem, value, type, i, name ) {
 755                 // Handle executable functions
 756                 if ( jQuery.isFunction( value ) )
 757                         value = value.call( elem, i );
 758
 759                 // Handle passing in a number to a CSS property
 760                 return value && value.constructor == Number && type == "curCSS" && !exclude.test( name ) ?
 761                         value + "px" :
 762                         value;
 763         },
 764
 765         className: {
 766                 // internal only, use addClass("class")
 767                 add: function( elem, classNames ) {
 768                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 769                                 if ( elem.nodeType == 1 && !jQuery.className.has( elem.className, className ) )
 770                                         elem.className += (elem.className ? " " : "") + className;
 771                         });
 772                 },
 773
 774                 // internal only, use removeClass("class")
 775                 remove: function( elem, classNames ) {
 776                         if (elem.nodeType == 1)
 777                                 elem.className = classNames != undefined ?
 778                                         jQuery.grep(elem.className.split(/\s+/), function(className){
 779                                                 return !jQuery.className.has( classNames, className );
 780                                         }).join(" ") :
 781                                         "";
 782                 },
 783
 784                 // internal only, use hasClass("class")
 785                 has: function( elem, className ) {
 786                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 787                 }
 788         },
 789
 790         // A method for quickly swapping in/out CSS properties to get correct calculations
 791         swap: function( elem, options, callback ) {
 792                 var old = {};
 793                 // Remember the old values, and insert the new ones
 794                 for ( var name in options ) {
 795                         old[ name ] = elem.style[ name ];
 796                         elem.style[ name ] = options[ name ];
 797                 }
 798
 799                 callback.call( elem );
 800
 801                 // Revert the old values
 802                 for ( var name in options )
 803                         elem.style[ name ] = old[ name ];
 804         },
 805
 806         css: function( elem, name, force ) {
 807                 if ( name == "width" || name == "height" ) {
 808                         var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name == "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
 809
 810                         function getWH() {
 811                                 val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
 812                                 var padding = 0, border = 0;
 813                                 jQuery.each( which, function() {
 814                                         padding += parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
 815                                         border += parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
 816                                 });
 817                                 val -= Math.round(padding + border);
 818                         }
 819
 820                         if ( jQuery(elem).is(":visible") )
 821                                 getWH();
 822                         else
 823                                 jQuery.swap( elem, props, getWH );
 824
 825                         return Math.max(0, val);
 826                 }
 827
 828                 return jQuery.curCSS( elem, name, force );
 829         },
 830
 831         curCSS: function( elem, name, force ) {
 832                 var ret, style = elem.style;
 833
 834                 // A helper method for determining if an element's values are broken
 835                 function color( elem ) {
 836                         if ( !jQuery.browser.safari )
 837                                 return false;
 838
 839                         // defaultView is cached
 840                         var ret = defaultView.getComputedStyle( elem, null );
 841                         return !ret || ret.getPropertyValue("color") == "";
 842                 }
 843
 844                 // We need to handle opacity special in IE
 845                 if ( name == "opacity" && jQuery.browser.msie ) {
 846                         ret = jQuery.attr( style, "opacity" );
 847
 848                         return ret == "" ?
 849                                 "1" :
 850                                 ret;
 851                 }
 852                 // Opera sometimes will give the wrong display answer, this fixes it, see #2037
 853                 if ( jQuery.browser.opera && name == "display" ) {
 854                         var save = style.outline;
 855                         style.outline = "0 solid black";
 856                         style.outline = save;
 857                 }
 858
 859                 // Make sure we're using the right name for getting the float value
 860                 if ( name.match( /float/i ) )
 861                         name = styleFloat;
 862
 863                 if ( !force && style && style[ name ] )
 864                         ret = style[ name ];
 865
 866                 else if ( defaultView.getComputedStyle ) {
 867
 868                         // Only "float" is needed here
 869                         if ( name.match( /float/i ) )
 870                                 name = "float";
 871
 872                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 873
 874                         var computedStyle = defaultView.getComputedStyle( elem, null );
 875
 876                         if ( computedStyle && !color( elem ) )
 877                                 ret = computedStyle.getPropertyValue( name );
 878
 879                         // If the element isn't reporting its values properly in Safari
 880                         // then some display: none elements are involved
 881                         else {
 882                                 var swap = [], stack = [], a = elem, i = 0;
 883
 884                                 // Locate all of the parent display: none elements
 885                                 for ( ; a && color(a); a = a.parentNode )
 886                                         stack.unshift(a);
 887
 888                                 // Go through and make them visible, but in reverse
 889                                 // (It would be better if we knew the exact display type that they had)
 890                                 for ( ; i < stack.length; i++ )
 891                                         if ( color( stack[ i ] ) ) {
 892                                                 swap[ i ] = stack[ i ].style.display;
 893                                                 stack[ i ].style.display = "block";
 894                                         }
 895
 896                                 // Since we flip the display style, we have to handle that
 897                                 // one special, otherwise get the value
 898                                 ret = name == "display" && swap[ stack.length - 1 ] != null ?
 899                                         "none" :
 900                                         ( computedStyle && computedStyle.getPropertyValue( name ) ) || "";
 901
 902                                 // Finally, revert the display styles back
 903                                 for ( i = 0; i < swap.length; i++ )
 904                                         if ( swap[ i ] != null )
 905                                                 stack[ i ].style.display = swap[ i ];
 906                         }
 907
 908                         // We should always get a number back from opacity
 909                         if ( name == "opacity" && ret == "" )
 910                                 ret = "1";
 911
 912                 } else if ( elem.currentStyle ) {
 913                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 914                                 return letter.toUpperCase();
 915                         });
 916
 917                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 918
 919                         // From the awesome hack by Dean Edwards
 920                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 921
 922                         // If we're not dealing with a regular pixel number
 923                         // but a number that has a weird ending, we need to convert it to pixels
 924                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 925                                 // Remember the original values
 926                                 var left = style.left, rsLeft = elem.runtimeStyle.left;
 927
 928                                 // Put in the new values to get a computed value out
 929                                 elem.runtimeStyle.left = elem.currentStyle.left;
 930                                 style.left = ret || 0;
 931                                 ret = style.pixelLeft + "px";
 932
 933                                 // Revert the changed values
 934                                 style.left = left;
 935                                 elem.runtimeStyle.left = rsLeft;
 936                         }
 937                 }
 938
 939                 return ret;
 940         },
 941
 942         clean: function( elems, context ) {
 943                 var ret = [];
 944                 context = context || document;
 945                 // !context.createElement fails in IE with an error but returns typeof 'object'
 946                 if (typeof context.createElement == 'undefined')
 947                         context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 948
 949                 jQuery.each(elems, function(i, elem){
 950                         if ( typeof elem == 'number' )
 951                                 elem += '';
 952
 953                         if ( !elem )
 954                                 return;
 955
 956                         // Convert html string into DOM nodes
 957                         if ( typeof elem == "string" ) {
 958                                 // Fix "XHTML"-style tags in all browsers
 959                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 960                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
 961                                                 all :
 962                                                 front + "></" + tag + ">";
 963                                 });
 964
 965                                 // Trim whitespace, otherwise indexOf won't work as expected
 966                                 var tags = jQuery.trim( elem ).toLowerCase(), div = context.createElement("div");
 967
 968                                 var wrap =
 969                                         // option or optgroup
 970                                         !tags.indexOf("<opt") &&
 971                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 972
 973                                         !tags.indexOf("<leg") &&
 974                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 975
 976                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 977                                         [ 1, "<table>", "</table>" ] ||
 978
 979                                         !tags.indexOf("<tr") &&
 980                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 981
 982                                         // <thead> matched above
 983                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 984                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 985
 986                                         !tags.indexOf("<col") &&
 987                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 988
 989                                         // IE can't serialize <link> and <script> tags normally
 990                                         jQuery.browser.msie &&
 991                                         [ 1, "div<div>", "</div>" ] ||
 992
 993                                         [ 0, "", "" ];
 994
 995                                 // Go to html and back, then peel off extra wrappers
 996                                 div.innerHTML = wrap[1] + elem + wrap[2];
 997
 998                                 // Move to the right depth
 999                                 while ( wrap[0]-- )
1000                                         div = div.lastChild;
1001
1002                                 // Remove IE's autoinserted <tbody> from table fragments
1003                                 if ( jQuery.browser.msie ) {
1004
1005                                         // String was a <table>, *may* have spurious <tbody>
1006                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
1007                                                 div.firstChild && div.firstChild.childNodes :
1008
1009                                                 // String was a bare <thead> or <tfoot>
1010                                                 wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
1011                                                         div.childNodes :
1012                                                         [];
1013
1014                                         for ( var j = tbody.length - 1; j >= 0 ; --j )
1015                                                 if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length )
1016                                                         tbody[ j ].parentNode.removeChild( tbody[ j ] );
1017
1018                                         // IE completely kills leading whitespace when innerHTML is used
1019                                         if ( /^\s/.test( elem ) )
1020                                                 div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
1021
1022                                 }
1023
1024                                 elem = jQuery.makeArray( div.childNodes );
1025                         }
1026
1027                         if ( elem.length === 0 && (!jQuery.nodeName( elem, "form" ) && !jQuery.nodeName( elem, "select" )) )
1028                                 return;
1029
1030                         if ( elem[0] == undefined || jQuery.nodeName( elem, "form" ) || elem.options )
1031                                 ret.push( elem );
1032
1033                         else
1034                                 ret = jQuery.merge( ret, elem );
1035
1036                 });
1037
1038                 return ret;
1039         },
1040
1041         attr: function( elem, name, value ) {
1042                 // don't set attributes on text and comment nodes
1043                 if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
1044                         return undefined;
1045
1046                 var notxml = !jQuery.isXMLDoc( elem ),
1047                         // Whether we are setting (or getting)
1048                         set = value !== undefined,
1049                         msie = jQuery.browser.msie;
1050
1051                 // Try to normalize/fix the name
1052                 name = notxml && jQuery.props[ name ] || name;
1053
1054                 // Only do all the following if this is a node (faster for style)
1055                 // IE elem.getAttribute passes even for style
1056                 if ( elem.tagName ) {
1057
1058                         // These attributes require special treatment
1059                         var special = /href|src|style/.test( name );
1060
1061                         // Safari mis-reports the default selected property of a hidden option
1062                         // Accessing the parent's selectedIndex property fixes it
1063                         if ( name == "selected" && jQuery.browser.safari )
1064                                 elem.parentNode.selectedIndex;
1065
1066                         // If applicable, access the attribute via the DOM 0 way
1067                         if ( name in elem && notxml && !special ) {
1068                                 if ( set ){
1069                                         // We can't allow the type property to be changed (since it causes problems in IE)
1070                                         if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
1071                                                 throw "type property can't be changed";
1072
1073                                         elem[ name ] = value;
1074                                 }
1075
1076                                 // browsers index elements by id/name on forms, give priority to attributes.
1077                                 if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) )
1078                                         return elem.getAttributeNode( name ).nodeValue;
1079
1080                                 return elem[ name ];
1081                         }
1082
1083                         if ( msie && notxml &&  name == "style" )
1084                                 return jQuery.attr( elem.style, "cssText", value );
1085
1086                         if ( set )
1087                                 // convert the value to a string (all browsers do this but IE) see #1070
1088                                 elem.setAttribute( name, "" + value );
1089
1090                         var attr = msie && notxml && special
1091                                         // Some attributes require a special call on IE
1092                                         ? elem.getAttribute( name, 2 )
1093                                         : elem.getAttribute( name );
1094
1095                         // Non-existent attributes return null, we normalize to undefined
1096                         return attr === null ? undefined : attr;
1097                 }
1098
1099                 // elem is actually elem.style ... set the style
1100
1101                 // IE uses filters for opacity
1102                 if ( msie && name == "opacity" ) {
1103                         if ( set ) {
1104                                 // IE has trouble with opacity if it does not have layout
1105                                 // Force it by setting the zoom level
1106                                 elem.zoom = 1;
1107
1108                                 // Set the alpha filter to set the opacity
1109                                 elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1110                                         (parseInt( value ) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1111                         }
1112
1113                         return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
1114                                 (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100) + '':
1115                                 "";
1116                 }
1117
1118                 name = name.replace(/-([a-z])/ig, function(all, letter){
1119                         return letter.toUpperCase();
1120                 });
1121
1122                 if ( set )
1123                         elem[ name ] = value;
1124
1125                 return elem[ name ];
1126         },
1127
1128         trim: function( text ) {
1129                 return (text || "").replace( /^\s+|\s+$/g, "" );
1130         },
1131
1132         makeArray: function( array ) {
1133                 var ret = [];
1134
1135                 if( array != null ){
1136                         var i = array.length;
1137                         // The window, strings (and functions) also have 'length'
1138                         if( i == null || typeof array == 'string' || jQuery.isFunction(array) || array.setInterval )
1139                                 ret[0] = array;
1140                         else
1141                                 while( i )
1142                                         ret[--i] = array[i];
1143                 }
1144
1145                 return ret;
1146         },
1147
1148         inArray: function( elem, array ) {
1149                 for ( var i = 0, length = array.length; i < length; i++ )
1150                 // Use === because on IE, window == document
1151                         if ( array[ i ] === elem )
1152                                 return i;
1153
1154                 return -1;
1155         },
1156
1157         merge: function( first, second ) {
1158                 // We have to loop this way because IE & Opera overwrite the length
1159                 // expando of getElementsByTagName
1160                 var i = 0, elem, pos = first.length;
1161                 // Also, we need to make sure that the correct elements are being returned
1162                 // (IE returns comment nodes in a '*' query)
1163                 if ( jQuery.browser.msie ) {
1164                         while ( elem = second[ i++ ] )
1165                                 if ( elem.nodeType != 8 )
1166                                         first[ pos++ ] = elem;
1167
1168                 } else
1169                         while ( elem = second[ i++ ] )
1170                                 first[ pos++ ] = elem;
1171
1172                 return first;
1173         },
1174
1175         unique: function( array ) {
1176                 var ret = [], done = {};
1177
1178                 try {
1179
1180                         for ( var i = 0, length = array.length; i < length; i++ ) {
1181                                 var id = jQuery.data( array[ i ] );
1182
1183                                 if ( !done[ id ] ) {
1184                                         done[ id ] = true;
1185                                         ret.push( array[ i ] );
1186                                 }
1187                         }
1188
1189                 } catch( e ) {
1190                         ret = array;
1191                 }
1192
1193                 return ret;
1194         },
1195
1196         grep: function( elems, callback, inv ) {
1197                 var ret = [];
1198
1199                 // Go through the array, only saving the items
1200                 // that pass the validator function
1201                 for ( var i = 0, length = elems.length; i < length; i++ )
1202                         if ( !inv != !callback( elems[ i ], i ) )
1203                                 ret.push( elems[ i ] );
1204
1205                 return ret;
1206         },
1207
1208         map: function( elems, callback ) {
1209                 var ret = [];
1210
1211                 // Go through the array, translating each of the items to their
1212                 // new value (or values).
1213                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1214                         var value = callback( elems[ i ], i );
1215
1216                         if ( value != null )
1217                                 ret[ ret.length ] = value;
1218                 }
1219
1220                 return ret.concat.apply( [], ret );
1221         }
1222 });
1223
1224 var userAgent = navigator.userAgent.toLowerCase();
1225
1226 // Figure out what browser is being used
1227 jQuery.browser = {
1228         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
1229         safari: /webkit/.test( userAgent ),
1230         opera: /opera/.test( userAgent ),
1231         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1232         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1233 };
1234
1235 var styleFloat = jQuery.browser.msie ?
1236         "styleFloat" :
1237         "cssFloat";
1238
1239 jQuery.extend({
1240         // Check to see if the W3C box model is being used
1241         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1242
1243         props: {
1244                 "for": "htmlFor",
1245                 "class": "className",
1246                 "float": styleFloat,
1247                 cssFloat: styleFloat,
1248                 styleFloat: styleFloat,
1249                 readonly: "readOnly",
1250                 maxlength: "maxLength",
1251                 cellspacing: "cellSpacing",
1252                 rowspan: "rowSpan"
1253         }
1254 });
1255
1256 jQuery.each({
1257         parent: function(elem){return elem.parentNode;},
1258         parents: function(elem){return jQuery.dir(elem,"parentNode");},
1259         next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
1260         prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
1261         nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
1262         prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
1263         siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
1264         children: function(elem){return jQuery.sibling(elem.firstChild);},
1265         contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
1266 }, function(name, fn){
1267         jQuery.fn[ name ] = function( selector ) {
1268                 var ret = jQuery.map( this, fn );
1269
1270                 if ( selector && typeof selector == "string" )
1271                         ret = jQuery.multiFilter( selector, ret );
1272
1273                 return this.pushStack( jQuery.unique( ret ) );
1274         };
1275 });
1276
1277 jQuery.each({
1278         appendTo: "append",
1279         prependTo: "prepend",
1280         insertBefore: "before",
1281         insertAfter: "after",
1282         replaceAll: "replaceWith"
1283 }, function(name, original){
1284         jQuery.fn[ name ] = function() {
1285                 var args = arguments;
1286
1287                 return this.each(function(){
1288                         for ( var i = 0, length = args.length; i < length; i++ )
1289                                 jQuery( args[ i ] )[ original ]( this );
1290                 });
1291         };
1292 });
1293
1294 jQuery.each({
1295         removeAttr: function( name ) {
1296                 jQuery.attr( this, name, "" );
1297                 if (this.nodeType == 1)
1298                         this.removeAttribute( name );
1299         },
1300
1301         addClass: function( classNames ) {
1302                 jQuery.className.add( this, classNames );
1303         },
1304
1305         removeClass: function( classNames ) {
1306                 jQuery.className.remove( this, classNames );
1307         },
1308
1309         toggleClass: function( classNames ) {
1310                 jQuery.className[ jQuery.className.has( this, classNames ) ? "remove" : "add" ]( this, classNames );
1311         },
1312
1313         remove: function( selector ) {
1314                 if ( !selector || jQuery.filter( selector, [ this ] ).r.length ) {
1315                         // Prevent memory leaks
1316                         jQuery( "*", this ).add([this]).each(function(){
1317                                 jQuery.event.remove(this);
1318                                 jQuery.removeData(this);
1319                         });
1320                         if (this.parentNode)
1321                                 this.parentNode.removeChild( this );
1322                 }
1323         },
1324
1325         empty: function() {
1326                 // Remove element nodes and prevent memory leaks
1327                 jQuery( ">*", this ).remove();
1328
1329                 // Remove any remaining nodes
1330                 while ( this.firstChild )
1331                         this.removeChild( this.firstChild );
1332         }
1333 }, function(name, fn){
1334         jQuery.fn[ name ] = function(){
1335                 return this.each( fn, arguments );
1336         };
1337 });
1338
1339 jQuery.each([ "Height", "Width" ], function(i, name){
1340         var type = name.toLowerCase();
1341
1342         jQuery.fn[ type ] = function( size ) {
1343                 // Get window width or height
1344                 return this[0] == window ?
1345                         // Opera reports document.body.client[Width/Height] properly in both quirks and standards
1346                         jQuery.browser.opera && document.body[ "client" + name ] ||
1347
1348                         // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
1349                         jQuery.browser.safari && window[ "inner" + name ] ||
1350
1351                         // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
1352                         document.compatMode == "CSS1Compat" && document.documentElement[ "client" + name ] || document.body[ "client" + name ] :
1353
1354                         // Get document width or height
1355                         this[0] == document ?
1356                                 // Either scroll[Width/Height] or offset[Width/Height], whichever is greater
1357                                 Math.max(
1358                                         Math.max(document.body["scroll" + name], document.documentElement["scroll" + name]),
1359                                         Math.max(document.body["offset" + name], document.documentElement["offset" + name])
1360                                 ) :
1361
1362                                 // Get or set width or height on the element
1363                                 size == undefined ?
1364                                         // Get width or height on the element
1365                                         (this.length ? jQuery.css( this[0], type ) : null) :
1366
1367                                         // Set the width or height on the element (default to pixels if value is unitless)
1368                                         this.css( type, size.constructor == String ? size : size + "px" );
1369         };
1370 });
1371
1372 // Helper function used by the dimensions and offset modules
1373 function num(elem, prop) {
1374         return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
1375 }