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 ( window.jQuery )
  14         var _jQuery = window.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 ( window.$ )
  25         var _$ = window.$;
  26
  27 // Map the jQuery namespace to the '$' one
  28 window.$ = jQuery;
  29
  30 // A simple way to check for HTML strings or ID strings
  31 // (both of which we optimize for)
  32 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/;
  33
  34 jQuery.fn = jQuery.prototype = {
  35         init: function( selector, context ) {
  36                 // Make sure that a selection was provided
  37                 selector = selector || document;
  38
  39                 // Handle $(DOMElement)
  40                 if ( selector.nodeType ) {
  41                         this[0] = selector;
  42                         this.length = 1;
  43                         return this;
  44
  45                 // Handle HTML strings
  46                 } else if ( typeof selector == "string" ) {
  47                         // Are we dealing with HTML string or an ID?
  48                         var match = quickExpr.exec( selector );
  49
  50                         // Verify a match, and that no context was specified for #id
  51                         if ( match && (match[1] || !context) ) {
  52
  53                                 // HANDLE: $(html) -> $(array)
  54                                 if ( match[1] )
  55                                         selector = jQuery.clean( [ match[1] ], context );
  56
  57                                 // HANDLE: $("#id")
  58                                 else {
  59                                         var elem = document.getElementById( match[3] );
  60
  61                                         // Make sure an element was located
  62                                         if ( elem )
  63                                                 // Handle the case where IE and Opera return items
  64                                                 // by name instead of ID
  65                                                 if ( elem.id != match[3] )
  66                                                         return jQuery().find( selector );
  67
  68                                                 // Otherwise, we inject the element directly into the jQuery object
  69                                                 else {
  70                                                         this[0] = elem;
  71                                                         this.length = 1;
  72                                                         return this;
  73                                                 }
  74
  75                                         else
  76                                                 selector = [];
  77                                 }
  78
  79                         // HANDLE: $(expr, [context])
  80                         // (which is just equivalent to: $(content).find(expr)
  81                         } else
  82                                 return new jQuery( context ).find( selector );
  83
  84                 // HANDLE: $(function)
  85                 // Shortcut for document ready
  86                 } else if ( jQuery.isFunction( selector ) )
  87                         return new jQuery( document )[ jQuery.fn.ready ? "ready" : "load" ]( selector );
  88
  89                 return this.setArray(
  90                         // HANDLE: $(array)
  91                         selector.constructor == Array && selector ||
  92
  93                         // HANDLE: $(arraylike)
  94                         // Watch for when an array-like object, contains DOM nodes, is passed in as the selector
  95                         (selector.jquery || selector.length && selector != window && !selector.nodeType && selector[0] != undefined && selector[0].nodeType) && jQuery.makeArray( selector ) ||
  96
  97                         // HANDLE: $(*)
  98                         [ selector ] );
  99         },
 100
 101         // The current version of jQuery being used
 102         jquery: "@VERSION",
 103
 104         // The number of elements contained in the matched element set
 105         size: function() {
 106                 return this.length;
 107         },
 108
 109         // The number of elements contained in the matched element set
 110         length: 0,
 111
 112         // Get the Nth element in the matched element set OR
 113         // Get the whole matched element set as a clean array
 114         get: function( num ) {
 115                 return num == undefined ?
 116
 117                         // Return a 'clean' array
 118                         jQuery.makeArray( this ) :
 119
 120                         // Return just the object
 121                         this[ num ];
 122         },
 123
 124         // Take an array of elements and push it onto the stack
 125         // (returning the new matched element set)
 126         pushStack: function( elems ) {
 127                 // Build a new jQuery matched element set
 128                 var ret = jQuery( elems );
 129
 130                 // Add the old object onto the stack (as a reference)
 131                 ret.prevObject = this;
 132
 133                 // Return the newly-formed element set
 134                 return ret;
 135         },
 136
 137         // Force the current matched set of elements to become
 138         // the specified array of elements (destroying the stack in the process)
 139         // You should use pushStack() in order to do this, but maintain the stack
 140         setArray: function( elems ) {
 141                 // Resetting the length to 0, then using the native Array push
 142                 // is a super-fast way to populate an object with array-like properties
 143                 this.length = 0;
 144                 Array.prototype.push.apply( this, elems );
 145
 146                 return this;
 147         },
 148
 149         // Execute a callback for every element in the matched set.
 150         // (You can seed the arguments with an array of args, but this is
 151         // only used internally.)
 152         each: function( callback, args ) {
 153                 return jQuery.each( this, callback, args );
 154         },
 155
 156         // Determine the position of an element within
 157         // the matched set of elements
 158         index: function( elem ) {
 159                 var ret = -1;
 160
 161                 // Locate the position of the desired element
 162                 this.each(function(i){
 163                         if ( this == elem )
 164                                 ret = i;
 165                 });
 166
 167                 return ret;
 168         },
 169
 170         attr: function( name, value, type ) {
 171                 var options = name;
 172
 173                 // Look for the case where we're accessing a style value
 174                 if ( name.constructor == String )
 175                         if ( value == undefined )
 176                                 return this.length && jQuery[ type || "attr" ]( this[0], name ) || undefined;
 177
 178                         else {
 179                                 options = {};
 180                                 options[ name ] = value;
 181                         }
 182
 183                 // Check to see if we're setting style values
 184                 return this.each(function(i){
 185                         // Set all the styles
 186                         for ( name in options )
 187                                 jQuery.attr(
 188                                         type ?
 189                                                 this.style :
 190                                                 this,
 191                                         name, jQuery.prop( this, options[ name ], type, i, name )
 192                                 );
 193                 });
 194         },
 195
 196         css: function( key, value ) {
 197                 // ignore negative width and height values
 198                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 199                         value = undefined;
 200                 return this.attr( key, value, "curCSS" );
 201         },
 202
 203         text: function( text ) {
 204                 if ( typeof text != "object" && text != null )
 205                         return this.empty().append( document.createTextNode( text ) );
 206
 207                 var ret = "";
 208
 209                 jQuery.each( text || this, function(){
 210                         jQuery.each( this.childNodes, function(){
 211                                 if ( this.nodeType != 8 )
 212                                         ret += this.nodeType != 1 ?
 213                                                 this.nodeValue :
 214                                                 jQuery.fn.text( [ this ] );
 215                         });
 216                 });
 217
 218                 return ret;
 219         },
 220
 221         wrapAll: function( html ) {
 222                 if ( this[0] )
 223                         // The elements to wrap the target around
 224                         jQuery( html, this[0].ownerDocument )
 225                                 .clone()
 226                                 .insertBefore( this[0] )
 227                                 .map(function(){
 228                                         var elem = this;
 229
 230                                         while ( elem.firstChild )
 231                                                 elem = elem.firstChild;
 232
 233                                         return elem;
 234                                 })
 235                                 .append(this);
 236
 237                 return this;
 238         },
 239
 240         wrapInner: function( html ) {
 241                 return this.each(function(){
 242                         jQuery( this ).contents().wrapAll( html );
 243                 });
 244         },
 245
 246         wrap: function( html ) {
 247                 return this.each(function(){
 248                         jQuery( this ).wrapAll( html );
 249                 });
 250         },
 251
 252         append: function() {
 253                 return this.domManip(arguments, true, false, function(elem){
 254                         this.appendChild( elem );
 255                 });
 256         },
 257
 258         prepend: function() {
 259                 return this.domManip(arguments, true, true, function(elem){
 260                         this.insertBefore( elem, this.firstChild );
 261                 });
 262         },
 263
 264         before: function() {
 265                 return this.domManip(arguments, false, false, function(elem){
 266                         this.parentNode.insertBefore( elem, this );
 267                 });
 268         },
 269
 270         after: function() {
 271                 return this.domManip(arguments, false, true, function(elem){
 272                         this.parentNode.insertBefore( elem, this.nextSibling );
 273                 });
 274         },
 275
 276         end: function() {
 277                 return this.prevObject || jQuery( [] );
 278         },
 279
 280         find: function( selector ) {
 281                 var elems = jQuery.map(this, function(elem){
 282                         return jQuery.find( selector, elem );
 283                 });
 284
 285                 return this.pushStack( /[^+>] [^+>]/.test( selector ) || selector.indexOf("..") > -1 ?
 286                         jQuery.unique( elems ) :
 287                         elems );
 288         },
 289
 290         clone: function( events ) {
 291                 // Do the clone
 292                 var ret = this.map(function(){
 293                         return this.outerHTML ?
 294                                 jQuery( this.outerHTML )[0] :
 295                                 this.cloneNode( true );
 296                 });
 297
 298                 // Need to set the expando to null on the cloned set if it exists
 299                 // removeData doesn't work here, IE removes it from the original as well
 300                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 301                 var clone = ret.find("*").andSelf().each(function(){
 302                         if ( this[ expando ] != undefined )
 303                                 this[ expando ] = null;
 304                 });
 305
 306                 // Copy the events from the original to the clone
 307                 if ( events === true )
 308                         this.find("*").andSelf().each(function(i){
 309                                 var events = jQuery.data( this, "events" );
 310
 311                                 for ( var type in events )
 312                                         for ( var handler in events[ type ] )
 313                                                 jQuery.event.add( clone[ i ], type, events[ type ][ handler ], events[ type ][ handler ].data );
 314                         });
 315
 316                 // Return the cloned set
 317                 return ret;
 318         },
 319
 320         filter: function( selector ) {
 321                 return this.pushStack(
 322                         jQuery.isFunction( selector ) &&
 323                         jQuery.grep(this, function(elem, i){
 324                                 return selector.call( elem, i );
 325                         }) ||
 326
 327                         jQuery.multiFilter( selector, this ) );
 328         },
 329
 330         not: function( selector ) {
 331                 return this.pushStack(
 332                         selector.constructor == String &&
 333                         jQuery.multiFilter( selector, this, true ) ||
 334
 335                         jQuery.grep(this, function(elem) {
 336                                 return selector.constructor == Array || selector.jquery ?
 337                                         jQuery.inArray( elem, selector ) < 0 :
 338                                         elem != selector;
 339                         }) );
 340         },
 341
 342         add: function( selector ) {
 343                 return this.pushStack( jQuery.merge(
 344                         this.get(),
 345                         selector.constructor == String ?
 346                                 jQuery( selector ).get() :
 347                                 selector.length != undefined && (!selector.nodeName || jQuery.nodeName(selector, "form")) ?
 348                                         selector : [selector] ) );
 349         },
 350
 351         is: function( selector ) {
 352                 return selector ?
 353                         jQuery.multiFilter( selector, this ).length > 0 :
 354                         false;
 355         },
 356
 357         hasClass: function( selector ) {
 358                 return this.is( "." + selector );
 359         },
 360
 361         val: function( value ) {
 362                 if ( value == undefined ) {
 363
 364                         if ( this.length ) {
 365                                 var elem = this[0];
 366
 367                                 // We need to handle select boxes special
 368                                 if ( jQuery.nodeName( elem, "select" ) ) {
 369                                         var index = elem.selectedIndex,
 370                                                 values = [],
 371                                                 options = elem.options,
 372                                                 one = elem.type == "select-one";
 373
 374                                         // Nothing was selected
 375                                         if ( index < 0 )
 376                                                 return null;
 377
 378                                         // Loop through all the selected options
 379                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 380                                                 var option = options[ i ];
 381
 382                                                 if ( option.selected ) {
 383                                                         // Get the specifc value for the option
 384                                                         value = jQuery.browser.msie && !option.attributes.value.specified ? option.text : option.value;
 385
 386                                                         // We don't need an array for one selects
 387                                                         if ( one )
 388                                                                 return value;
 389
 390                                                         // Multi-Selects return an array
 391                                                         values.push( value );
 392                                                 }
 393                                         }
 394
 395                                         return values;
 396
 397                                 // Everything else, we just grab the value
 398                                 } else
 399                                         return (this[0].value || "").replace(/\r/g, "");
 400
 401                         }
 402
 403                 } else
 404                         return this.each(function(){
 405                                 if ( value.constructor == Array && /radio|checkbox/.test( this.type ) )
 406                                         this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 407                                                 jQuery.inArray(this.name, value) >= 0);
 408
 409                                 else if ( jQuery.nodeName( this, "select" ) ) {
 410                                         var values = value.constructor == Array ?
 411                                                 value :
 412                                                 [ value ];
 413
 414                                         jQuery( "option", this ).each(function(){
 415                                                 this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 416                                                         jQuery.inArray( this.text, values ) >= 0);
 417                                         });
 418
 419                                         if ( !values.length )
 420                                                 this.selectedIndex = -1;
 421
 422                                 } else
 423                                         this.value = value;
 424                         });
 425         },
 426
 427         html: function( value ) {
 428                 return value == undefined ?
 429                         (this.length ?
 430                                 this[0].innerHTML :
 431                                 null) :
 432                         this.empty().append( value );
 433         },
 434
 435         replaceWith: function( value ) {
 436                 return this.after( value ).remove();
 437         },
 438
 439         eq: function( i ) {
 440                 return this.slice( i, i + 1 );
 441         },
 442
 443         slice: function() {
 444                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 445         },
 446
 447         map: function( callback ) {
 448                 return this.pushStack( jQuery.map(this, function(elem, i){
 449                         return callback.call( elem, i, elem );
 450                 }));
 451         },
 452
 453         andSelf: function() {
 454                 return this.add( this.prevObject );
 455         },
 456
 457         domManip: function( args, table, reverse, callback ) {
 458                 var clone = this.length > 1, elems;
 459
 460                 return this.each(function(){
 461                         if ( !elems ) {
 462                                 elems = jQuery.clean( args, this.ownerDocument );
 463
 464                                 if ( reverse )
 465                                         elems.reverse();
 466                         }
 467
 468                         var obj = this;
 469
 470                         if ( table && jQuery.nodeName( this, "table" ) && jQuery.nodeName( elems[0], "tr" ) )
 471                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild( document.createElement("tbody") );
 472
 473                         var scripts = jQuery( [] );
 474
 475                         jQuery.each(elems, function(){
 476                                 var elem = clone ?
 477                                         this.cloneNode( true ) :
 478                                         this;
 479
 480                                 if ( jQuery.nodeName( elem, "script" ) ) {
 481
 482                                         // If scripts are waiting to be executed, wait on this script as well
 483                                         if ( scripts.length )
 484                                                 scripts = scripts.add( elem );
 485
 486                                         // If nothing is waiting to be executed, run immediately
 487                                         else
 488                                                 evalScript( 0, elem );
 489
 490                                 } else {
 491                                         // Remove any inner scripts for later evaluation
 492                                         if ( elem.nodeType == 1 )
 493                                                 scripts = scripts.add( jQuery( "script", elem ).remove() );
 494
 495                                         // Inject the elements into the document
 496                                         callback.call( obj, elem );
 497                                 }
 498                         });
 499
 500                         scripts.each( evalScript );
 501                 });
 502         }
 503 };
 504
 505 function evalScript( i, elem ) {
 506         if ( elem.src )
 507                 jQuery.ajax({
 508                         url: elem.src,
 509                         async: false,
 510                         dataType: "script"
 511                 });
 512
 513         else
 514                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 515
 516         if ( elem.parentNode )
 517                 elem.parentNode.removeChild( elem );
 518 }
 519
 520 jQuery.extend = jQuery.fn.extend = function() {
 521         // copy reference to target object
 522         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 523
 524         // Handle a deep copy situation
 525         if ( target.constructor == Boolean ) {
 526                 deep = target;
 527                 target = arguments[1] || {};
 528                 // skip the boolean and the target
 529                 i = 2;
 530         }
 531
 532         // Handle case when target is a string or something (possible in deep copy)
 533         if ( typeof target != "object" )
 534                 target = {};
 535
 536         // extend jQuery itself if only one argument is passed
 537         if ( length == 1 ) {
 538                 target = this;
 539                 i = 0;
 540         }
 541
 542         for ( ; i < length; i++ )
 543                 // Only deal with non-null/undefined values
 544                 if ( (options = arguments[ i ]) != null )
 545                         // Extend the base object
 546                         for ( var name in options ) {
 547                                 // Prevent never-ending loop
 548                                 if ( target === options[ name ] )
 549                                         continue;
 550
 551                                 // Recurse if we're merging object values
 552                                 if ( deep && options[ name ] && typeof options[ name ] == "object" && target[ name ] && !options[ name ].nodeType )
 553                                         target[ name ] = jQuery.extend( target[ name ], options[ name ] );
 554
 555                                 // Don't bring in undefined values
 556                                 else if ( options[ name ] !== undefined )
 557                                         target[ name ] = options[ name ];
 558
 559                         }
 560
 561         // Return the modified object
 562         return target;
 563 };
 564
 565 var expando = "jQuery" + (new Date()).getTime(), uuid = 0, windowData = {};
 566
 567 // exclude the following css properties to add px
 568 var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 569
 570 jQuery.extend({
 571         noConflict: function( deep ) {
 572                 window.$ = _$;
 573
 574                 if ( deep )
 575                         window.jQuery = _jQuery;
 576
 577                 return jQuery;
 578         },
 579
 580         // This may seem like some crazy code, but trust me when I say that this
 581         // is the only cross-browser way to do this. --John
 582         isFunction: function( fn ) {
 583                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 584                         fn.constructor != Array && /function/i.test( fn + "" );
 585         },
 586
 587         // check if an element is in a (or is an) XML document
 588         isXMLDoc: function( elem ) {
 589                 return elem.documentElement && !elem.body ||
 590                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 591         },
 592
 593         // Evalulates a script in a global context
 594         // Evaluates Async. in Safari 2 :-(
 595         globalEval: function( data ) {
 596                 data = jQuery.trim( data );
 597
 598                 if ( data ) {
 599                         // Inspired by code by Andrea Giammarchi
 600                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 601                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 602                                 script = document.createElement("script");
 603
 604                         script.type = "text/javascript";
 605                         if ( jQuery.browser.msie )
 606                                 script.text = data;
 607                         else
 608                                 script.appendChild( document.createTextNode( data ) );
 609
 610                         head.appendChild( script );
 611                         head.removeChild( script );
 612                 }
 613         },
 614
 615         nodeName: function( elem, name ) {
 616                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 617         },
 618
 619         cache: {},
 620
 621         data: function( elem, name, data ) {
 622                 elem = elem == window ?
 623                         windowData :
 624                         elem;
 625
 626                 var id = elem[ expando ];
 627
 628                 // Compute a unique ID for the element
 629                 if ( !id )
 630                         id = elem[ expando ] = ++uuid;
 631
 632                 // Only generate the data cache if we're
 633                 // trying to access or manipulate it
 634                 if ( name && !jQuery.cache[ id ] )
 635                         jQuery.cache[ id ] = {};
 636
 637                 // Prevent overriding the named cache with undefined values
 638                 if ( data != undefined )
 639                         jQuery.cache[ id ][ name ] = data;
 640
 641                 // Return the named cache data, or the ID for the element
 642                 return name ?
 643                         jQuery.cache[ id ][ name ] :
 644                         id;
 645         },
 646
 647         removeData: function( elem, name ) {
 648                 elem = elem == window ?
 649                         windowData :
 650                         elem;
 651
 652                 var id = elem[ expando ];
 653
 654                 // If we want to remove a specific section of the element's data
 655                 if ( name ) {
 656                         if ( jQuery.cache[ id ] ) {
 657                                 // Remove the section of cache data
 658                                 delete jQuery.cache[ id ][ name ];
 659
 660                                 // If we've removed all the data, remove the element's cache
 661                                 name = "";
 662
 663                                 for ( name in jQuery.cache[ id ] )
 664                                         break;
 665
 666                                 if ( !name )
 667                                         jQuery.removeData( elem );
 668                         }
 669
 670                 // Otherwise, we want to remove all of the element's data
 671                 } else {
 672                         // Clean up the element expando
 673                         try {
 674                                 delete elem[ expando ];
 675                         } catch(e){
 676                                 // IE has trouble directly removing the expando
 677                                 // but it's ok with using removeAttribute
 678                                 if ( elem.removeAttribute )
 679                                         elem.removeAttribute( expando );
 680                         }
 681
 682                         // Completely remove the data cache
 683                         delete jQuery.cache[ id ];
 684                 }
 685         },
 686
 687         // args is for internal usage only
 688         each: function( object, callback, args ) {
 689                 if ( args ) {
 690                         if ( object.length == undefined )
 691                                 for ( var name in object )
 692                                         callback.apply( object[ name ], args );
 693                         else
 694                                 for ( var i = 0, length = object.length; i < length; i++ )
 695                                         if ( callback.apply( object[ i ], args ) === false )
 696                                                 break;
 697
 698                 // A special, fast, case for the most common use of each
 699                 } else {
 700                         if ( object.length == undefined )
 701                                 for ( var name in object )
 702                                         callback.call( object[ name ], name, object[ name ] );
 703                         else
 704                                 for ( var i = 0, length = object.length, value = object[0];
 705                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 706                 }
 707
 708                 return object;
 709         },
 710
 711         prop: function( elem, value, type, i, name ) {
 712                         // Handle executable functions
 713                         if ( jQuery.isFunction( value ) )
 714                                 value = value.call( elem, i );
 715
 716                         // Handle passing in a number to a CSS property
 717                         return value && value.constructor == Number && type == "curCSS" && !exclude.test( name ) ?
 718                                 value + "px" :
 719                                 value;
 720         },
 721
 722         className: {
 723                 // internal only, use addClass("class")
 724                 add: function( elem, classNames ) {
 725                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 726                                 if ( !jQuery.className.has( elem.className, className ) )
 727                                         elem.className += (elem.className ? " " : "") + className;
 728                         });
 729                 },
 730
 731                 // internal only, use removeClass("class")
 732                 remove: function( elem, classNames ) {
 733                         elem.className = classNames != undefined ?
 734                                 jQuery.grep(elem.className.split(/\s+/), function(className){
 735                                         return !jQuery.className.has( classNames, className );
 736                                 }).join(" ") :
 737                                 "";
 738                 },
 739
 740                 // internal only, use is(".class")
 741                 has: function( elem, className ) {
 742                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 743                 }
 744         },
 745
 746         // A method for quickly swapping in/out CSS properties to get correct calculations
 747         swap: function( elem, options, callback ) {
 748                 // Remember the old values, and insert the new ones
 749                 for ( var name in options ) {
 750                         elem.style[ "old" + name ] = elem.style[ name ];
 751                         elem.style[ name ] = options[ name ];
 752                 }
 753
 754                 callback.call( elem );
 755
 756                 // Revert the old values
 757                 for ( var name in options )
 758                         elem.style[ name ] = elem.style[ "old" + name ];
 759         },
 760
 761         css: function( elem, name, force ) {
 762                 if ( name == "height" || name == "width" ) {
 763                         var old = {}, height, width;
 764
 765                         // Revert the padding and border widths to get the
 766                         // correct height/width values
 767                         jQuery.each([ "Top", "Bottom", "Right", "Left" ], function(){
 768                                 old[ "padding" + this ] = 0;
 769                                 old[ "border" + this + "Width" ] = 0;
 770                         });
 771
 772                         // Swap out the padding/border values temporarily
 773                         jQuery.swap( elem, old, function() {
 774
 775                                 // If the element is visible, then the calculation is easy
 776                                 if ( jQuery( elem ).is(":visible") ) {
 777                                         height = elem.offsetHeight;
 778                                         width = elem.offsetWidth;
 779
 780                                 // Otherwise, we need to flip out more values
 781                                 } else {
 782                                         elem = jQuery( elem.cloneNode(true) )
 783                                                 .find(":radio").removeAttr("checked").removeAttr("defaultChecked").end()
 784                                                 .css({
 785                                                         visibility: "hidden",
 786                                                         position: "absolute",
 787                                                         display: "block",
 788                                                         right: "0",
 789                                                         left: "0"
 790                                                 }).appendTo( elem.parentNode )[0];
 791
 792                                         var position = jQuery.css( elem.parentNode, "position" ) || "static";
 793                                         if ( position == "static" )
 794                                                 elem.parentNode.style.position = "relative";
 795
 796                                         height = elem.clientHeight;
 797                                         width = elem.clientWidth;
 798
 799                                         if ( position == "static" )
 800                                                 elem.parentNode.style.position = "static";
 801
 802                                         elem.parentNode.removeChild( elem );
 803                                 }
 804                         });
 805
 806                         return name == "height" ?
 807                                 height :
 808                                 width;
 809                 }
 810
 811                 return jQuery.curCSS( elem, name, force );
 812         },
 813
 814         curCSS: function( elem, name, force ) {
 815                 var ret;
 816
 817                 // A helper method for determining if an element's values are broken
 818                 function color( elem ) {
 819                         if ( !jQuery.browser.safari )
 820                                 return false;
 821
 822                         var ret = document.defaultView.getComputedStyle( elem, null );
 823                         return !ret || ret.getPropertyValue("color") == "";
 824                 }
 825
 826                 // We need to handle opacity special in IE
 827                 if ( name == "opacity" && jQuery.browser.msie ) {
 828                         ret = jQuery.attr( elem.style, "opacity" );
 829
 830                         return ret == "" ?
 831                                 "1" :
 832                                 ret;
 833                 }
 834
 835                 // Make sure we're using the right name for getting the float value
 836                 if ( name.match( /float/i ) )
 837                         name = styleFloat;
 838
 839                 if ( !force && elem.style[ name ] )
 840                         ret = elem.style[ name ];
 841
 842                 else if ( document.defaultView && document.defaultView.getComputedStyle ) {
 843
 844                         // Only "float" is needed here
 845                         if ( name.match( /float/i ) )
 846                                 name = "float";
 847
 848                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 849
 850                         var getComputedStyle = document.defaultView.getComputedStyle( elem, null );
 851
 852                         if ( getComputedStyle && !color( elem ) )
 853                                 ret = getComputedStyle.getPropertyValue( name );
 854
 855                         // If the element isn't reporting its values properly in Safari
 856                         // then some display: none elements are involved
 857                         else {
 858                                 var swap = [], stack = [];
 859
 860                                 // Locate all of the parent display: none elements
 861                                 for ( var a = elem; a && color(a); a = a.parentNode )
 862                                         stack.unshift(a);
 863
 864                                 // Go through and make them visible, but in reverse
 865                                 // (It would be better if we knew the exact display type that they had)
 866                                 for ( var i = 0; i < stack.length; i++ )
 867                                         if ( color( stack[ i ] ) ) {
 868                                                 swap[ i ] = stack[ i ].style.display;
 869                                                 stack[ i ].style.display = "block";
 870                                         }
 871
 872                                 // Since we flip the display style, we have to handle that
 873                                 // one special, otherwise get the value
 874                                 ret = name == "display" && swap[ stack.length - 1 ] != null ?
 875                                         "none" :
 876                                         ( getComputedStyle && getComputedStyle.getPropertyValue( name ) ) || "";
 877
 878                                 // Finally, revert the display styles back
 879                                 for ( var i = 0; i < swap.length; i++ )
 880                                         if ( swap[ i ] != null )
 881                                                 stack[ i ].style.display = swap[ i ];
 882                         }
 883
 884                         // We should always get a number back from opacity
 885                         if ( name == "opacity" && ret == "" )
 886                                 ret = "1";
 887
 888                 } else if ( elem.currentStyle ) {
 889                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 890                                 return letter.toUpperCase();
 891                         });
 892
 893                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 894
 895                         // From the awesome hack by Dean Edwards
 896                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 897
 898                         // If we're not dealing with a regular pixel number
 899                         // but a number that has a weird ending, we need to convert it to pixels
 900                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 901                                 // Remember the original values
 902                                 var style = elem.style.left, runtimeStyle = elem.runtimeStyle.left;
 903
 904                                 // Put in the new values to get a computed value out
 905                                 elem.runtimeStyle.left = elem.currentStyle.left;
 906                                 elem.style.left = ret || 0;
 907                                 ret = elem.style.pixelLeft + "px";
 908
 909                                 // Revert the changed values
 910                                 elem.style.left = style;
 911                                 elem.runtimeStyle.left = runtimeStyle;
 912                         }
 913                 }
 914
 915                 return ret;
 916         },
 917
 918         clean: function( elems, context ) {
 919                 var ret = [];
 920                 context = context || document;
 921
 922                 jQuery.each(elems, function(i, elem){
 923                         if ( !elem )
 924                                 return;
 925
 926                         if ( elem.constructor == Number )
 927                                 elem = elem.toString();
 928
 929                         // Convert html string into DOM nodes
 930                         if ( typeof elem == "string" ) {
 931                                 // Fix "XHTML"-style tags in all browsers
 932                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 933                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area)$/i) ?
 934                                                 all :
 935                                                 front + "></" + tag + ">";
 936                                 });
 937
 938                                 // Trim whitespace, otherwise indexOf won't work as expected
 939                                 var tags = jQuery.trim( elem ).toLowerCase(), div = context.createElement("div");
 940
 941                                 var wrap =
 942                                         // option or optgroup
 943                                         !tags.indexOf("<opt") &&
 944                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 945
 946                                         !tags.indexOf("<leg") &&
 947                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 948
 949                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 950                                         [ 1, "<table>", "</table>" ] ||
 951
 952                                         !tags.indexOf("<tr") &&
 953                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 954
 955                                         // <thead> matched above
 956                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 957                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 958
 959                                         !tags.indexOf("<col") &&
 960                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 961
 962                                         // IE can't serialize <link> and <script> tags normally
 963                                         jQuery.browser.msie &&
 964                                         [ 1, "div<div>", "</div>" ] ||
 965
 966                                         [ 0, "", "" ];
 967
 968                                 // Go to html and back, then peel off extra wrappers
 969                                 div.innerHTML = wrap[1] + elem + wrap[2];
 970
 971                                 // Move to the right depth
 972                                 while ( wrap[0]-- )
 973                                         div = div.lastChild;
 974
 975                                 // Remove IE's autoinserted <tbody> from table fragments
 976                                 if ( jQuery.browser.msie ) {
 977
 978                                         // String was a <table>, *may* have spurious <tbody>
 979                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
 980                                                 div.firstChild && div.firstChild.childNodes :
 981
 982                                                 // String was a bare <thead> or <tfoot>
 983                                                 wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
 984                                                         div.childNodes :
 985                                                         [];
 986
 987                                         for ( var i = tbody.length - 1; i >= 0 ; --i )
 988                                                 if ( jQuery.nodeName( tbody[ i ], "tbody" ) && !tbody[ i ].childNodes.length )
 989                                                         tbody[ i ].parentNode.removeChild( tbody[ i ] );
 990
 991                                         // IE completely kills leading whitespace when innerHTML is used
 992                                         if ( /^\s/.test( elem ) )
 993                                                 div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
 994
 995                                 }
 996
 997                                 elem = jQuery.makeArray( div.childNodes );
 998                         }
 999
1000                         if ( elem.length === 0 && (!jQuery.nodeName( elem, "form" ) && !jQuery.nodeName( elem, "select" )) )
1001                                 return;
1002
1003                         if ( elem[0] == undefined || jQuery.nodeName( elem, "form" ) || elem.options )
1004                                 ret.push( elem );
1005
1006                         else
1007                                 ret = jQuery.merge( ret, elem );
1008
1009                 });
1010
1011                 return ret;
1012         },
1013
1014         attr: function( elem, name, value ) {
1015                 var fix = jQuery.isXMLDoc( elem ) ?
1016                         {} :
1017                         jQuery.props;
1018
1019                 // Safari mis-reports the default selected property of a hidden option
1020                 // Accessing the parent's selectedIndex property fixes it
1021                 if ( name == "selected" && jQuery.browser.safari )
1022                         elem.parentNode.selectedIndex;
1023
1024                 // Certain attributes only work when accessed via the old DOM 0 way
1025                 if ( fix[ name ] ) {
1026                         if ( value != undefined )
1027                                 elem[ fix[ name ] ] = value;
1028
1029                         return elem[ fix[ name ] ];
1030
1031                 } else if ( jQuery.browser.msie && name == "style" )
1032                         return jQuery.attr( elem.style, "cssText", value );
1033
1034                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName( elem, "form" ) && (name == "action" || name == "method") )
1035                         return elem.getAttributeNode( name ).nodeValue;
1036
1037                 // IE elem.getAttribute passes even for style
1038                 else if ( elem.tagName ) {
1039
1040                         if ( value != undefined ) {
1041                                 // We can't allow the type property to be changed (since it causes problems in IE)
1042                                 if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
1043                                         throw "type property can't be changed";
1044
1045                                 // convert the value to a string (all browsers do this but IE) see #1070
1046                                 elem.setAttribute( name, "" + value );
1047                         }
1048
1049                         if ( jQuery.browser.msie && /href|src/.test( name ) && !jQuery.isXMLDoc( elem ) )
1050                                 return elem.getAttribute( name, 2 );
1051
1052                         return elem.getAttribute( name );
1053
1054                 // elem is actually elem.style ... set the style
1055                 } else {
1056                         // IE actually uses filters for opacity
1057                         if ( name == "opacity" && jQuery.browser.msie ) {
1058                                 if ( value != undefined ) {
1059                                         // IE has trouble with opacity if it does not have layout
1060                                         // Force it by setting the zoom level
1061                                         elem.zoom = 1;
1062
1063                                         // Set the alpha filter to set the opacity
1064                                         elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1065                                                 (parseFloat( value ).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1066                                 }
1067
1068                                 return elem.filter ?
1069                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() :
1070                                         "";
1071                         }
1072
1073                         name = name.replace(/-([a-z])/ig, function(all, letter){
1074                                 return letter.toUpperCase();
1075                         });
1076
1077                         if ( value != undefined )
1078                                 elem[ name ] = value;
1079
1080                         return elem[ name ];
1081                 }
1082         },
1083
1084         trim: function( text ) {
1085                 return (text || "").replace( /^\s+|\s+$/g, "" );
1086         },
1087
1088         makeArray: function( array ) {
1089                 var ret = [];
1090
1091                 // Need to use typeof to fight Safari childNodes crashes
1092                 if ( typeof array != "array" )
1093                         for ( var i = 0, length = array.length; i < length; i++ )
1094                                 ret.push( array[ i ] );
1095                 else
1096                         ret = array.slice( 0 );
1097
1098                 return ret;
1099         },
1100
1101         inArray: function( elem, array ) {
1102                 for ( var i = 0, length = array.length; i < length; i++ )
1103                         if ( array[ i ] == elem )
1104                                 return i;
1105
1106                 return -1;
1107         },
1108
1109         merge: function( first, second ) {
1110                 // We have to loop this way because IE & Opera overwrite the length
1111                 // expando of getElementsByTagName
1112
1113                 // Also, we need to make sure that the correct elements are being returned
1114                 // (IE returns comment nodes in a '*' query)
1115                 if ( jQuery.browser.msie ) {
1116                         for ( var i = 0; second[ i ]; i++ )
1117                                 if ( second[ i ].nodeType != 8 )
1118                                         first.push( second[ i ] );
1119
1120                 } else
1121                         for ( var i = 0; second[ i ]; i++ )
1122                                 first.push( second[ i ] );
1123
1124                 return first;
1125         },
1126
1127         unique: function( array ) {
1128                 var ret = [], done = {};
1129
1130                 try {
1131
1132                         for ( var i = 0, length = array.length; i < length; i++ ) {
1133                                 var id = jQuery.data( array[ i ] );
1134
1135                                 if ( !done[ id ] ) {
1136                                         done[ id ] = true;
1137                                         ret.push( array[ i ] );
1138                                 }
1139                         }
1140
1141                 } catch( e ) {
1142                         ret = array;
1143                 }
1144
1145                 return ret;
1146         },
1147
1148         grep: function( elems, callback, inv ) {
1149                 // If a string is passed in for the function, make a function
1150                 // for it (a handy shortcut)
1151                 if ( typeof callback == "string" )
1152                         callback = eval("false||function(a,i){return " + callback + "}");
1153
1154                 var ret = [];
1155
1156                 // Go through the array, only saving the items
1157                 // that pass the validator function
1158                 for ( var i = 0, length = elems.length; i < length; i++ )
1159                         if ( !inv && callback( elems[ i ], i ) || inv && !callback( elems[ i ], i ) )
1160                                 ret.push( elems[ i ] );
1161
1162                 return ret;
1163         },
1164
1165         map: function( elems, callback ) {
1166                 var ret = [];
1167
1168                 // Go through the array, translating each of the items to their
1169                 // new value (or values).
1170                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1171                         var value = callback( elems[ i ], i );
1172
1173                         if ( value !== null && value != undefined ) {
1174                                 if ( value.constructor != Array )
1175                                         value = [ value ];
1176
1177                                 ret = ret.concat( value );
1178                         }
1179                 }
1180
1181                 return ret;
1182         }
1183 });
1184
1185 var userAgent = navigator.userAgent.toLowerCase();
1186
1187 // Figure out what browser is being used
1188 jQuery.browser = {
1189         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [])[1],
1190         safari: /webkit/.test( userAgent ),
1191         opera: /opera/.test( userAgent ),
1192         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1193         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1194 };
1195
1196 var styleFloat = jQuery.browser.msie ?
1197         "styleFloat" :
1198         "cssFloat";
1199
1200 jQuery.extend({
1201         // Check to see if the W3C box model is being used
1202         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1203
1204         props: {
1205                 "for": "htmlFor",
1206                 "class": "className",
1207                 "float": styleFloat,
1208                 cssFloat: styleFloat,
1209                 styleFloat: styleFloat,
1210                 innerHTML: "innerHTML",
1211                 className: "className",
1212                 value: "value",
1213                 disabled: "disabled",
1214                 checked: "checked",
1215                 readonly: "readOnly",
1216                 selected: "selected",
1217                 maxlength: "maxLength",
1218                 selectedIndex: "selectedIndex",
1219                 defaultValue: "defaultValue",
1220                 tagName: "tagName",
1221                 nodeName: "nodeName"
1222         }
1223 });
1224
1225 jQuery.each({
1226         parent: "elem.parentNode",
1227         parents: "jQuery.dir(elem,'parentNode')",
1228         next: "jQuery.nth(elem,2,'nextSibling')",
1229         prev: "jQuery.nth(elem,2,'previousSibling')",
1230         nextAll: "jQuery.dir(elem,'nextSibling')",
1231         prevAll: "jQuery.dir(elem,'previousSibling')",
1232         siblings: "jQuery.sibling(elem.parentNode.firstChild,elem)",
1233         children: "jQuery.sibling(elem.firstChild)",
1234         contents: "jQuery.nodeName(elem,'iframe')?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes)"
1235 }, function(name, fn){
1236         fn = eval("false||function(elem){return " + fn + "}");
1237
1238         jQuery.fn[ name ] = function( selector ) {
1239                 var ret = jQuery.map( this, fn );
1240
1241                 if ( selector && typeof selector == "string" )
1242                         ret = jQuery.multiFilter( selector, ret );
1243
1244                 return this.pushStack( jQuery.unique( ret ) );
1245         };
1246 });
1247
1248 jQuery.each({
1249         appendTo: "append",
1250         prependTo: "prepend",
1251         insertBefore: "before",
1252         insertAfter: "after",
1253         replaceAll: "replaceWith"
1254 }, function(name, original){
1255         jQuery.fn[ name ] = function() {
1256                 var args = arguments;
1257
1258                 return this.each(function(){
1259                         for ( var i = 0, length = args.length; i < length; i++ )
1260                                 jQuery( args[ i ] )[ original ]( this );
1261                 });
1262         };
1263 });
1264
1265 jQuery.each({
1266         removeAttr: function( name ) {
1267                 jQuery.attr( this, name, "" );
1268                 this.removeAttribute( name );
1269         },
1270
1271         addClass: function( classNames ) {
1272                 jQuery.className.add( this, classNames );
1273         },
1274
1275         removeClass: function( classNames ) {
1276                 jQuery.className.remove( this, classNames );
1277         },
1278
1279         toggleClass: function( classNames ) {
1280                 jQuery.className[ jQuery.className.has( this, classNames ) ? "remove" : "add" ]( this, classNames );
1281         },
1282
1283         remove: function( selector ) {
1284                 if ( !selector || jQuery.filter( selector, [ this ] ).r.length ) {
1285                         // Prevent memory leaks
1286                         jQuery( "*", this ).add(this).each(function(){
1287                                 jQuery.event.remove(this);
1288                                 jQuery.removeData(this);
1289                         });
1290                         if (this.parentNode)
1291                                 this.parentNode.removeChild( this );
1292                 }
1293         },
1294
1295         empty: function() {
1296                 // Remove element nodes and prevent memory leaks
1297                 jQuery( ">*", this ).remove();
1298
1299                 // Remove any remaining nodes
1300                 while ( this.firstChild )
1301                         this.removeChild( this.firstChild );
1302         }
1303 }, function(name, fn){
1304         jQuery.fn[ name ] = function(){
1305                 return this.each( fn, arguments );
1306         };
1307 });
1308
1309 jQuery.each([ "Height", "Width" ], function(i, name){
1310         var type = name.toLowerCase();
1311
1312         jQuery.fn[ type ] = function( size ) {
1313                 // Get window width or height
1314                 return this[0] == window ?
1315                         // Opera reports document.body.client[Width/Height] properly in both quirks and standards
1316                         jQuery.browser.opera && document.body[ "client" + name ] ||
1317
1318                         // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
1319                         jQuery.browser.safari && window[ "inner" + name ] ||
1320
1321                         // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
1322                         document.compatMode == "CSS1Compat" && document.documentElement[ "client" + name ] || document.body[ "client" + name ] :
1323
1324                         // Get document width or height
1325                         this[0] == document ?
1326                                 // Either scroll[Width/Height] or offset[Width/Height], whichever is greater (Mozilla reports scrollWidth the same as offsetWidth)
1327                                 Math.max( document.body[ "scroll" + name ], document.body[ "offset" + name ] ) :
1328
1329                                 // Get or set width or height on the element
1330                                 size == undefined ?
1331                                         // Get width or height on the element
1332                                         (this.length ? jQuery.css( this[0], type ) : null) :
1333
1334                                         // Set the width or height on the element (default to pixels if value is unitless)
1335                                         this.css( type, size.constructor == String ? size : size + "px" );
1336         };
1337 });