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 var
  13         // Will speed up references to window, and allows munging its name.
  14         window = this,
  15         // Will speed up references to undefined, and allows munging its name.
  16         undefined,
  17         // Map over jQuery in case of overwrite
  18         _jQuery = window.jQuery,
  19         // Map over the $ in case of overwrite
  20         _$ = window.$,
  21
  22         jQuery = window.jQuery = window.$ = function( selector, context ) {
  23                 // The jQuery object is actually just the init constructor 'enhanced'
  24                 return new jQuery.fn.init( selector, context );
  25         },
  26
  27         // A simple way to check for HTML strings or ID strings
  28         // (both of which we optimize for)
  29         quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
  30         // Is it a simple selector
  31         isSimple = /^.[^:#\[\.,]*$/;
  32
  33 jQuery.fn = jQuery.prototype = {
  34         init: function( selector, context ) {
  35                 // Make sure that a selection was provided
  36                 selector = selector || document;
  37
  38                 // Handle $(DOMElement)
  39                 if ( selector.nodeType ) {
  40                         this[0] = selector;
  41                         this.length = 1;
  42                         this.context = selector;
  43                         return this;
  44                 }
  45                 // Handle HTML strings
  46                 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                                                 var ret = jQuery( elem );
  70                                                 ret.context = document;
  71                                                 ret.selector = selector;
  72                                                 return ret;
  73                                         }
  74                                         selector = [];
  75                                 }
  76
  77                         // HANDLE: $(expr, [context])
  78                         // (which is just equivalent to: $(content).find(expr)
  79                         } else
  80                                 return jQuery( context ).find( selector );
  81
  82                 // HANDLE: $(function)
  83                 // Shortcut for document ready
  84                 } else if ( jQuery.isFunction( selector ) )
  85                         return jQuery( document ).ready( selector );
  86
  87                 return this.setArray(jQuery.makeArray(selector));
  88         },
  89
  90         // Start with an empty selector
  91         selector: "",
  92
  93         // The current version of jQuery being used
  94         jquery: "@VERSION",
  95
  96         // The number of elements contained in the matched element set
  97         size: function() {
  98                 return this.length;
  99         },
 100
 101         // Get the Nth element in the matched element set OR
 102         // Get the whole matched element set as a clean array
 103         get: function( num ) {
 104                 return num === undefined ?
 105
 106                         // Return a 'clean' array
 107                         jQuery.makeArray( this ) :
 108
 109                         // Return just the object
 110                         this[ num ];
 111         },
 112
 113         // Take an array of elements and push it onto the stack
 114         // (returning the new matched element set)
 115         pushStack: function( elems, name, selector ) {
 116                 // Build a new jQuery matched element set
 117                 var ret = jQuery( elems );
 118
 119                 // Add the old object onto the stack (as a reference)
 120                 ret.prevObject = this;
 121
 122                 ret.context = this.context;
 123
 124                 if ( name === "find" )
 125                         ret.selector = this.selector + (this.selector ? " " : "") + selector;
 126                 else if ( name )
 127                         ret.selector = this.selector + "." + name + "(" + selector + ")";
 128
 129                 // Return the newly-formed element set
 130                 return ret;
 131         },
 132
 133         // Force the current matched set of elements to become
 134         // the specified array of elements (destroying the stack in the process)
 135         // You should use pushStack() in order to do this, but maintain the stack
 136         setArray: function( elems ) {
 137                 // Resetting the length to 0, then using the native Array push
 138                 // is a super-fast way to populate an object with array-like properties
 139                 this.length = 0;
 140                 Array.prototype.push.apply( this, elems );
 141
 142                 return this;
 143         },
 144
 145         // Execute a callback for every element in the matched set.
 146         // (You can seed the arguments with an array of args, but this is
 147         // only used internally.)
 148         each: function( callback, args ) {
 149                 return jQuery.each( this, callback, args );
 150         },
 151
 152         // Determine the position of an element within
 153         // the matched set of elements
 154         index: function( elem ) {
 155                 // Locate the position of the desired element
 156                 return jQuery.inArray(
 157                         // If it receives a jQuery object, the first element is used
 158                         elem && elem.jquery ? elem[0] : elem
 159                 , this );
 160         },
 161
 162         attr: function( name, value, type ) {
 163                 var options = name;
 164
 165                 // Look for the case where we're accessing a style value
 166                 if ( typeof name === "string" )
 167                         if ( value === undefined )
 168                                 return this[0] && jQuery[ type || "attr" ]( this[0], name );
 169
 170                         else {
 171                                 options = {};
 172                                 options[ name ] = value;
 173                         }
 174
 175                 // Check to see if we're setting style values
 176                 return this.each(function(i){
 177                         // Set all the styles
 178                         for ( name in options )
 179                                 jQuery.attr(
 180                                         type ?
 181                                                 this.style :
 182                                                 this,
 183                                         name, jQuery.prop( this, options[ name ], type, i, name )
 184                                 );
 185                 });
 186         },
 187
 188         css: function( key, value ) {
 189                 // ignore negative width and height values
 190                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 191                         value = undefined;
 192                 return this.attr( key, value, "curCSS" );
 193         },
 194
 195         text: function( text ) {
 196                 if ( typeof text !== "object" && text != null )
 197                         return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
 198
 199                 var ret = "";
 200
 201                 jQuery.each( text || this, function(){
 202                         jQuery.each( this.childNodes, function(){
 203                                 if ( this.nodeType != 8 )
 204                                         ret += this.nodeType != 1 ?
 205                                                 this.nodeValue :
 206                                                 jQuery.fn.text( [ this ] );
 207                         });
 208                 });
 209
 210                 return ret;
 211         },
 212
 213         wrapAll: function( html ) {
 214                 if ( this[0] )
 215                         // The elements to wrap the target around
 216                         jQuery( html, this[0].ownerDocument )
 217                                 .clone()
 218                                 .insertBefore( this[0] )
 219                                 .map(function(){
 220                                         var elem = this;
 221
 222                                         while ( elem.firstChild )
 223                                                 elem = elem.firstChild;
 224
 225                                         return elem;
 226                                 })
 227                                 .append(this);
 228
 229                 return this;
 230         },
 231
 232         wrapInner: function( html ) {
 233                 return this.each(function(){
 234                         jQuery( this ).contents().wrapAll( html );
 235                 });
 236         },
 237
 238         wrap: function( html ) {
 239                 return this.each(function(){
 240                         jQuery( this ).wrapAll( html );
 241                 });
 242         },
 243
 244         append: function() {
 245                 return this.domManip(arguments, true, function(elem){
 246                         if (this.nodeType == 1)
 247                                 this.appendChild( elem );
 248                 });
 249         },
 250
 251         prepend: function() {
 252                 return this.domManip(arguments, true, function(elem){
 253                         if (this.nodeType == 1)
 254                                 this.insertBefore( elem, this.firstChild );
 255                 });
 256         },
 257
 258         before: function() {
 259                 return this.domManip(arguments, false, function(elem){
 260                         this.parentNode.insertBefore( elem, this );
 261                 });
 262         },
 263
 264         after: function() {
 265                 return this.domManip(arguments, false, function(elem){
 266                         this.parentNode.insertBefore( elem, this.nextSibling );
 267                 });
 268         },
 269
 270         end: function() {
 271                 return this.prevObject || jQuery( [] );
 272         },
 273
 274         find: function( selector ) {
 275                 var elems = jQuery.map(this, function(elem){
 276                         return jQuery.find( selector, elem );
 277                 });
 278
 279                 return this.pushStack( /[^+>] [^+>]/.test( selector ) ?
 280                         jQuery.unique( elems ) :
 281                         elems, "find", selector );
 282         },
 283
 284         clone: function( events ) {
 285                 // Do the clone
 286                 var ret = this.map(function(){
 287                         if ( !jQuery.support.noCloneEvent && !jQuery.isXMLDoc(this) ) {
 288                                 // IE copies events bound via attachEvent when
 289                                 // using cloneNode. Calling detachEvent on the
 290                                 // clone will also remove the events from the orignal
 291                                 // In order to get around this, we use innerHTML.
 292                                 // Unfortunately, this means some modifications to
 293                                 // attributes in IE that are actually only stored
 294                                 // as properties will not be copied (such as the
 295                                 // the name attribute on an input).
 296                                 var clone = this.cloneNode(true),
 297                                         container = document.createElement("div");
 298                                 container.appendChild(clone);
 299                                 return jQuery.clean([container.innerHTML])[0];
 300                         } else
 301                                 return this.cloneNode(true);
 302                 });
 303
 304                 // Need to set the expando to null on the cloned set if it exists
 305                 // removeData doesn't work here, IE removes it from the original as well
 306                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 307                 var clone = ret.find("*").andSelf().each(function(){
 308                         if ( this[ expando ] !== undefined )
 309                                 this[ expando ] = null;
 310                 });
 311
 312                 // Copy the events from the original to the clone
 313                 if ( events === true )
 314                         this.find("*").andSelf().each(function(i){
 315                                 if (this.nodeType == 3)
 316                                         return;
 317                                 var events = jQuery.data( this, "events" );
 318
 319                                 for ( var type in events )
 320                                         for ( var handler in events[ type ] )
 321                                                 jQuery.event.add( clone[ i ], type, events[ type ][ handler ], events[ type ][ handler ].data );
 322                         });
 323
 324                 // Return the cloned set
 325                 return ret;
 326         },
 327
 328         filter: function( selector ) {
 329                 return this.pushStack(
 330                         jQuery.isFunction( selector ) &&
 331                         jQuery.grep(this, function(elem, i){
 332                                 return selector.call( elem, i );
 333                         }) ||
 334
 335                         jQuery.multiFilter( selector, jQuery.grep(this, function(elem){
 336                                 return elem.nodeType === 1;
 337                         }) ), "filter", selector );
 338         },
 339
 340         closest: function( selector ) {
 341                 return this.map(function(){
 342                         var cur = this;
 343                         while ( cur && cur.ownerDocument ) {
 344                                 if ( jQuery(cur).is(selector) )
 345                                         return cur;
 346                                 cur = cur.parentNode;
 347                         }
 348                 });
 349         },
 350
 351         not: function( selector ) {
 352                 if ( typeof selector === "string" )
 353                         // test special case where just one selector is passed in
 354                         if ( isSimple.test( selector ) )
 355                                 return this.pushStack( jQuery.multiFilter( selector, this, true ), "not", selector );
 356                         else
 357                                 selector = jQuery.multiFilter( selector, this );
 358
 359                 var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
 360                 return this.filter(function() {
 361                         return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
 362                 });
 363         },
 364
 365         add: function( selector ) {
 366                 return this.pushStack( jQuery.unique( jQuery.merge(
 367                         this.get(),
 368                         typeof selector === "string" ?
 369                                 jQuery( selector ) :
 370                                 jQuery.makeArray( selector )
 371                 )));
 372         },
 373
 374         is: function( selector ) {
 375                 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
 376         },
 377
 378         hasClass: function( selector ) {
 379                 return !!selector && this.is( "." + selector );
 380         },
 381
 382         val: function( value ) {
 383                 if ( value === undefined ) {
 384                         var elem = this[0];
 385
 386                         if ( elem ) {
 387                                 if( jQuery.nodeName( elem, 'option' ) )
 388                                         return (elem.attributes.value || {}).specified ? elem.value : elem.text;
 389
 390                                 // We need to handle select boxes special
 391                                 if ( jQuery.nodeName( elem, "select" ) ) {
 392                                         var index = elem.selectedIndex,
 393                                                 values = [],
 394                                                 options = elem.options,
 395                                                 one = elem.type == "select-one";
 396
 397                                         // Nothing was selected
 398                                         if ( index < 0 )
 399                                                 return null;
 400
 401                                         // Loop through all the selected options
 402                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 403                                                 var option = options[ i ];
 404
 405                                                 if ( option.selected ) {
 406                                                         // Get the specifc value for the option
 407                                                         value = jQuery(option).val();
 408
 409                                                         // We don't need an array for one selects
 410                                                         if ( one )
 411                                                                 return value;
 412
 413                                                         // Multi-Selects return an array
 414                                                         values.push( value );
 415                                                 }
 416                                         }
 417
 418                                         return values;
 419                                 }
 420
 421                                 // Everything else, we just grab the value
 422                                 return (elem.value || "").replace(/\r/g, "");
 423
 424                         }
 425
 426                         return undefined;
 427                 }
 428
 429                 if ( typeof value === "number" )
 430                         value += '';
 431
 432                 return this.each(function(){
 433                         if ( this.nodeType != 1 )
 434                                 return;
 435
 436                         if ( jQuery.isArray(value) && /radio|checkbox/.test( this.type ) )
 437                                 this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 438                                         jQuery.inArray(this.name, value) >= 0);
 439
 440                         else if ( jQuery.nodeName( this, "select" ) ) {
 441                                 var values = jQuery.makeArray(value);
 442
 443                                 jQuery( "option", this ).each(function(){
 444                                         this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 445                                                 jQuery.inArray( this.text, values ) >= 0);
 446                                 });
 447
 448                                 if ( !values.length )
 449                                         this.selectedIndex = -1;
 450
 451                         } else
 452                                 this.value = value;
 453                 });
 454         },
 455
 456         html: function( value ) {
 457                 return value === undefined ?
 458                         (this[0] ?
 459                                 this[0].innerHTML :
 460                                 null) :
 461                         this.empty().append( value );
 462         },
 463
 464         replaceWith: function( value ) {
 465                 return this.after( value ).remove();
 466         },
 467
 468         eq: function( i ) {
 469                 return this.slice( i, +i + 1 );
 470         },
 471
 472         slice: function() {
 473                 return this.pushStack( Array.prototype.slice.apply( this, arguments ),
 474                         "slice", Array.prototype.slice.call(arguments).join(",") );
 475         },
 476
 477         map: function( callback ) {
 478                 return this.pushStack( jQuery.map(this, function(elem, i){
 479                         return callback.call( elem, i, elem );
 480                 }));
 481         },
 482
 483         andSelf: function() {
 484                 return this.add( this.prevObject );
 485         },
 486
 487         domManip: function( args, table, callback ) {
 488                 if ( this[0] ) {
 489                         var fragment = this[0].ownerDocument.createDocumentFragment(),
 490                                 scripts = jQuery.clean( args, this[0].ownerDocument, fragment ),
 491                                 first = fragment.firstChild,
 492                                 extra = this.length > 1 ? fragment.cloneNode(true) : fragment;
 493
 494                         if ( first )
 495                                 for ( var i = 0, l = this.length; i < l; i++ )
 496                                         callback.call( root(this[i], first), i > 0 ? extra.cloneNode(true) : fragment );
 497
 498                         if ( scripts )
 499                                 jQuery.each( scripts, evalScript );
 500                 }
 501
 502                 return this;
 503
 504                 function root( elem, cur ) {
 505                         return table && jQuery.nodeName(elem, "table") && jQuery.nodeName(cur, "tr") ?
 506                                 (elem.getElementsByTagName("tbody")[0] ||
 507                                 elem.appendChild(elem.ownerDocument.createElement("tbody"))) :
 508                                 elem;
 509                 }
 510         }
 511 };
 512
 513 // Give the init function the jQuery prototype for later instantiation
 514 jQuery.fn.init.prototype = jQuery.fn;
 515
 516 function evalScript( i, elem ) {
 517         if ( elem.src )
 518                 jQuery.ajax({
 519                         url: elem.src,
 520                         async: false,
 521                         dataType: "script"
 522                 });
 523
 524         else
 525                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 526
 527         if ( elem.parentNode )
 528                 elem.parentNode.removeChild( elem );
 529 }
 530
 531 function now(){
 532         return +new Date;
 533 }
 534
 535 jQuery.extend = jQuery.fn.extend = function() {
 536         // copy reference to target object
 537         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 538
 539         // Handle a deep copy situation
 540         if ( typeof target === "boolean" ) {
 541                 deep = target;
 542                 target = arguments[1] || {};
 543                 // skip the boolean and the target
 544                 i = 2;
 545         }
 546
 547         // Handle case when target is a string or something (possible in deep copy)
 548         if ( typeof target !== "object" && !jQuery.isFunction(target) )
 549                 target = {};
 550
 551         // extend jQuery itself if only one argument is passed
 552         if ( length == i ) {
 553                 target = this;
 554                 --i;
 555         }
 556
 557         for ( ; i < length; i++ )
 558                 // Only deal with non-null/undefined values
 559                 if ( (options = arguments[ i ]) != null )
 560                         // Extend the base object
 561                         for ( var name in options ) {
 562                                 var src = target[ name ], copy = options[ name ];
 563
 564                                 // Prevent never-ending loop
 565                                 if ( target === copy )
 566                                         continue;
 567
 568                                 // Recurse if we're merging object values
 569                                 if ( deep && copy && typeof copy === "object" && !copy.nodeType )
 570                                         target[ name ] = jQuery.extend( deep,
 571                                                 // Never move original objects, clone them
 572                                                 src || ( copy.length != null ? [ ] : { } )
 573                                         , copy );
 574
 575                                 // Don't bring in undefined values
 576                                 else if ( copy !== undefined )
 577                                         target[ name ] = copy;
 578
 579                         }
 580
 581         // Return the modified object
 582         return target;
 583 };
 584
 585 // exclude the following css properties to add px
 586 var     exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
 587         // cache defaultView
 588         defaultView = document.defaultView || {},
 589         toString = Object.prototype.toString;
 590
 591 jQuery.extend({
 592         noConflict: function( deep ) {
 593                 window.$ = _$;
 594
 595                 if ( deep )
 596                         window.jQuery = _jQuery;
 597
 598                 return jQuery;
 599         },
 600
 601         // See test/unit/core.js for details concerning isFunction.
 602         // Since version 1.3, DOM methods and functions like alert
 603         // aren't supported. They return false on IE (#2968).
 604         isFunction: function( obj ) {
 605                 return toString.call(obj) === "[object Function]";
 606         },
 607
 608         isArray: function( obj ) {
 609                 return toString.call(obj) === "[object Array]";
 610         },
 611
 612         // check if an element is in a (or is an) XML document
 613         isXMLDoc: function( elem ) {
 614                 return elem.documentElement && !elem.body ||
 615                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 616         },
 617
 618         // Evalulates a script in a global context
 619         globalEval: function( data ) {
 620                 data = jQuery.trim( data );
 621
 622                 if ( data ) {
 623                         // Inspired by code by Andrea Giammarchi
 624                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 625                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 626                                 script = document.createElement("script");
 627
 628                         script.type = "text/javascript";
 629                         if ( jQuery.support.scriptEval )
 630                                 script.appendChild( document.createTextNode( data ) );
 631                         else
 632                                 script.text = data;
 633
 634                         // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
 635                         // This arises when a base node is used (#2709).
 636                         head.insertBefore( script, head.firstChild );
 637                         head.removeChild( script );
 638                 }
 639         },
 640
 641         nodeName: function( elem, name ) {
 642                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 643         },
 644
 645         // args is for internal usage only
 646         each: function( object, callback, args ) {
 647                 var name, i = 0, length = object.length;
 648
 649                 if ( args ) {
 650                         if ( length === undefined ) {
 651                                 for ( name in object )
 652                                         if ( callback.apply( object[ name ], args ) === false )
 653                                                 break;
 654                         } else
 655                                 for ( ; i < length; )
 656                                         if ( callback.apply( object[ i++ ], args ) === false )
 657                                                 break;
 658
 659                 // A special, fast, case for the most common use of each
 660                 } else {
 661                         if ( length === undefined ) {
 662                                 for ( name in object )
 663                                         if ( callback.call( object[ name ], name, object[ name ] ) === false )
 664                                                 break;
 665                         } else
 666                                 for ( var value = object[0];
 667                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 668                 }
 669
 670                 return object;
 671         },
 672
 673         prop: function( elem, value, type, i, name ) {
 674                 // Handle executable functions
 675                 if ( jQuery.isFunction( value ) )
 676                         value = value.call( elem, i );
 677
 678                 // Handle passing in a number to a CSS property
 679                 return typeof value === "number" && type == "curCSS" && !exclude.test( name ) ?
 680                         value + "px" :
 681                         value;
 682         },
 683
 684         className: {
 685                 // internal only, use addClass("class")
 686                 add: function( elem, classNames ) {
 687                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 688                                 if ( elem.nodeType == 1 && !jQuery.className.has( elem.className, className ) )
 689                                         elem.className += (elem.className ? " " : "") + className;
 690                         });
 691                 },
 692
 693                 // internal only, use removeClass("class")
 694                 remove: function( elem, classNames ) {
 695                         if (elem.nodeType == 1)
 696                                 elem.className = classNames !== undefined ?
 697                                         jQuery.grep(elem.className.split(/\s+/), function(className){
 698                                                 return !jQuery.className.has( classNames, className );
 699                                         }).join(" ") :
 700                                         "";
 701                 },
 702
 703                 // internal only, use hasClass("class")
 704                 has: function( elem, className ) {
 705                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 706                 }
 707         },
 708
 709         // A method for quickly swapping in/out CSS properties to get correct calculations
 710         swap: function( elem, options, callback ) {
 711                 var old = {};
 712                 // Remember the old values, and insert the new ones
 713                 for ( var name in options ) {
 714                         old[ name ] = elem.style[ name ];
 715                         elem.style[ name ] = options[ name ];
 716                 }
 717
 718                 callback.call( elem );
 719
 720                 // Revert the old values
 721                 for ( var name in options )
 722                         elem.style[ name ] = old[ name ];
 723         },
 724
 725         css: function( elem, name, force ) {
 726                 if ( name == "width" || name == "height" ) {
 727                         var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name == "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
 728
 729                         function getWH() {
 730                                 val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
 731                                 var padding = 0, border = 0;
 732                                 jQuery.each( which, function() {
 733                                         padding += parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
 734                                         border += parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
 735                                 });
 736                                 val -= Math.round(padding + border);
 737                         }
 738
 739                         if ( jQuery(elem).is(":visible") )
 740                                 getWH();
 741                         else
 742                                 jQuery.swap( elem, props, getWH );
 743
 744                         return Math.max(0, val);
 745                 }
 746
 747                 return jQuery.curCSS( elem, name, force );
 748         },
 749
 750         curCSS: function( elem, name, force ) {
 751                 var ret, style = elem.style;
 752
 753                 // We need to handle opacity special in IE
 754                 if ( name == "opacity" && !jQuery.support.opacity ) {
 755                         ret = jQuery.attr( style, "opacity" );
 756
 757                         return ret == "" ?
 758                                 "1" :
 759                                 ret;
 760                 }
 761
 762                 // Make sure we're using the right name for getting the float value
 763                 if ( name.match( /float/i ) )
 764                         name = styleFloat;
 765
 766                 if ( !force && style && style[ name ] )
 767                         ret = style[ name ];
 768
 769                 else if ( defaultView.getComputedStyle ) {
 770
 771                         // Only "float" is needed here
 772                         if ( name.match( /float/i ) )
 773                                 name = "float";
 774
 775                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 776
 777                         var computedStyle = defaultView.getComputedStyle( elem, null );
 778
 779                         if ( computedStyle )
 780                                 ret = computedStyle.getPropertyValue( name );
 781
 782                         // We should always get a number back from opacity
 783                         if ( name == "opacity" && ret == "" )
 784                                 ret = "1";
 785
 786                 } else if ( elem.currentStyle ) {
 787                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 788                                 return letter.toUpperCase();
 789                         });
 790
 791                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 792
 793                         // From the awesome hack by Dean Edwards
 794                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 795
 796                         // If we're not dealing with a regular pixel number
 797                         // but a number that has a weird ending, we need to convert it to pixels
 798                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 799                                 // Remember the original values
 800                                 var left = style.left, rsLeft = elem.runtimeStyle.left;
 801
 802                                 // Put in the new values to get a computed value out
 803                                 elem.runtimeStyle.left = elem.currentStyle.left;
 804                                 style.left = ret || 0;
 805                                 ret = style.pixelLeft + "px";
 806
 807                                 // Revert the changed values
 808                                 style.left = left;
 809                                 elem.runtimeStyle.left = rsLeft;
 810                         }
 811                 }
 812
 813                 return ret;
 814         },
 815
 816         clean: function( elems, context, fragment ) {
 817                 context = context || document;
 818
 819                 // !context.createElement fails in IE with an error but returns typeof 'object'
 820                 if ( typeof context.createElement === "undefined" )
 821                         context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 822
 823                 // If a single string is passed in and it's a single tag
 824                 // just do a createElement and skip the rest
 825                 if ( !fragment && elems.length === 1 && typeof elems[0] === "string" ) {
 826                         var match = /^<(\w+)\s*\/?>$/.exec(elems[0]);
 827                         if ( match )
 828                                 return [ context.createElement( match[1] ) ];
 829                 }
 830
 831                 var ret = [], scripts = [], div = context.createElement("div");
 832
 833                 jQuery.each(elems, function(i, elem){
 834                         if ( typeof elem === "number" )
 835                                 elem += '';
 836
 837                         if ( !elem )
 838                                 return;
 839
 840                         // Convert html string into DOM nodes
 841                         if ( typeof elem === "string" ) {
 842                                 // Fix "XHTML"-style tags in all browsers
 843                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 844                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
 845                                                 all :
 846                                                 front + "></" + tag + ">";
 847                                 });
 848
 849                                 // Trim whitespace, otherwise indexOf won't work as expected
 850                                 var tags = jQuery.trim( elem ).toLowerCase();
 851
 852                                 var wrap =
 853                                         // option or optgroup
 854                                         !tags.indexOf("<opt") &&
 855                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 856
 857                                         !tags.indexOf("<leg") &&
 858                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 859
 860                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 861                                         [ 1, "<table>", "</table>" ] ||
 862
 863                                         !tags.indexOf("<tr") &&
 864                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 865
 866                                         // <thead> matched above
 867                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 868                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 869
 870                                         !tags.indexOf("<col") &&
 871                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 872
 873                                         // IE can't serialize <link> and <script> tags normally
 874                                         !jQuery.support.htmlSerialize &&
 875                                         [ 1, "div<div>", "</div>" ] ||
 876
 877                                         [ 0, "", "" ];
 878
 879                                 // Go to html and back, then peel off extra wrappers
 880                                 div.innerHTML = wrap[1] + elem + wrap[2];
 881
 882                                 // Move to the right depth
 883                                 while ( wrap[0]-- )
 884                                         div = div.lastChild;
 885
 886                                 // Remove IE's autoinserted <tbody> from table fragments
 887                                 if ( !jQuery.support.tbody ) {
 888
 889                                         // String was a <table>, *may* have spurious <tbody>
 890                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
 891                                                 div.firstChild && div.firstChild.childNodes :
 892
 893                                                 // String was a bare <thead> or <tfoot>
 894                                                 wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
 895                                                         div.childNodes :
 896                                                         [];
 897
 898                                         for ( var j = tbody.length - 1; j >= 0 ; --j )
 899                                                 if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length )
 900                                                         tbody[ j ].parentNode.removeChild( tbody[ j ] );
 901
 902                                         }
 903
 904                                 // IE completely kills leading whitespace when innerHTML is used
 905                                 if ( !jQuery.support.leadingWhitespace && /^\s/.test( elem ) )
 906                                         div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
 907
 908                                 if ( fragment ) {
 909                                         var found = div.getElementsByTagName("script");
 910
 911                                         while ( found.length ) {
 912                                                 scripts.push( found[0] );
 913                                                 found[0].parentNode.removeChild( found[0] );
 914                                         }
 915                                 }
 916
 917                                 elem = jQuery.makeArray( div.childNodes );
 918                         }
 919
 920                         if ( elem.nodeType )
 921                                 ret.push( elem );
 922                         else
 923                                 ret = jQuery.merge( ret, elem );
 924
 925                 });
 926
 927                 if ( fragment ) {
 928                         for ( var i = 0; ret[i]; i++ ) {
 929                                 var node = ret[i];
 930                                 if ( jQuery.nodeName( node, "script" ) ) {
 931                                         if( node.parentNode )
 932                                                 node.parentNode.removeChild( node );
 933                                 } else {
 934                                         if ( node.nodeType === 1 )
 935                                                 ret = jQuery.merge( ret, node.getElementsByTagName("script"));
 936                                         fragment.appendChild( node );
 937                                 }
 938                         }
 939
 940                         return scripts;
 941                 }
 942
 943                 return ret;
 944         },
 945
 946         attr: function( elem, name, value ) {
 947                 // don't set attributes on text and comment nodes
 948                 if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
 949                         return undefined;
 950
 951                 var notxml = !jQuery.isXMLDoc( elem ),
 952                         // Whether we are setting (or getting)
 953                         set = value !== undefined;
 954
 955                 // Try to normalize/fix the name
 956                 name = notxml && jQuery.props[ name ] || name;
 957
 958                 // Only do all the following if this is a node (faster for style)
 959                 // IE elem.getAttribute passes even for style
 960                 if ( elem.tagName ) {
 961
 962                         // These attributes require special treatment
 963                         var special = /href|src|style/.test( name );
 964
 965                         // Safari mis-reports the default selected property of a hidden option
 966                         // Accessing the parent's selectedIndex property fixes it
 967                         if ( name == "selected" )
 968                                 elem.parentNode.selectedIndex;
 969
 970                         // If applicable, access the attribute via the DOM 0 way
 971                         if ( name in elem && notxml && !special ) {
 972                                 if ( set ){
 973                                         // We can't allow the type property to be changed (since it causes problems in IE)
 974                                         if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
 975                                                 throw "type property can't be changed";
 976
 977                                         elem[ name ] = value;
 978                                 }
 979
 980                                 // browsers index elements by id/name on forms, give priority to attributes.
 981                                 if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) )
 982                                         return elem.getAttributeNode( name ).nodeValue;
 983
 984                                 return elem[ name ];
 985                         }
 986
 987                         if ( !jQuery.support.style && notxml &&  name == "style" )
 988                                 return jQuery.attr( elem.style, "cssText", value );
 989
 990                         if ( set )
 991                                 // convert the value to a string (all browsers do this but IE) see #1070
 992                                 elem.setAttribute( name, "" + value );
 993
 994                         var attr = !jQuery.support.hrefNormalized && notxml && special
 995                                         // Some attributes require a special call on IE
 996                                         ? elem.getAttribute( name, 2 )
 997                                         : elem.getAttribute( name );
 998
 999                         // Non-existent attributes return null, we normalize to undefined
1000                         return attr === null ? undefined : attr;
1001                 }
1002
1003                 // elem is actually elem.style ... set the style
1004
1005                 // IE uses filters for opacity
1006                 if ( !jQuery.support.opacity && name == "opacity" ) {
1007                         if ( set ) {
1008                                 // IE has trouble with opacity if it does not have layout
1009                                 // Force it by setting the zoom level
1010                                 elem.zoom = 1;
1011
1012                                 // Set the alpha filter to set the opacity
1013                                 elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1014                                         (parseInt( value ) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1015                         }
1016
1017                         return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
1018                                 (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100) + '':
1019                                 "";
1020                 }
1021
1022                 name = name.replace(/-([a-z])/ig, function(all, letter){
1023                         return letter.toUpperCase();
1024                 });
1025
1026                 if ( set )
1027                         elem[ name ] = value;
1028
1029                 return elem[ name ];
1030         },
1031
1032         trim: function( text ) {
1033                 return (text || "").replace( /^\s+|\s+$/g, "" );
1034         },
1035
1036         makeArray: function( array ) {
1037                 var ret = [];
1038
1039                 if( array != null ){
1040                         var i = array.length;
1041                         // The window, strings (and functions) also have 'length'
1042                         if( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval )
1043                                 ret[0] = array;
1044                         else
1045                                 while( i )
1046                                         ret[--i] = array[i];
1047                 }
1048
1049                 return ret;
1050         },
1051
1052         inArray: function( elem, array ) {
1053                 for ( var i = 0, length = array.length; i < length; i++ )
1054                 // Use === because on IE, window == document
1055                         if ( array[ i ] === elem )
1056                                 return i;
1057
1058                 return -1;
1059         },
1060
1061         merge: function( first, second ) {
1062                 // We have to loop this way because IE & Opera overwrite the length
1063                 // expando of getElementsByTagName
1064                 var i = 0, elem, pos = first.length;
1065                 // Also, we need to make sure that the correct elements are being returned
1066                 // (IE returns comment nodes in a '*' query)
1067                 if ( !jQuery.support.getAll ) {
1068                         while ( (elem = second[ i++ ]) != null )
1069                                 if ( elem.nodeType != 8 )
1070                                         first[ pos++ ] = elem;
1071
1072                 } else
1073                         while ( (elem = second[ i++ ]) != null )
1074                                 first[ pos++ ] = elem;
1075
1076                 return first;
1077         },
1078
1079         unique: function( array ) {
1080                 var ret = [], done = {};
1081
1082                 try {
1083
1084                         for ( var i = 0, length = array.length; i < length; i++ ) {
1085                                 var id = jQuery.data( array[ i ] );
1086
1087                                 if ( !done[ id ] ) {
1088                                         done[ id ] = true;
1089                                         ret.push( array[ i ] );
1090                                 }
1091                         }
1092
1093                 } catch( e ) {
1094                         ret = array;
1095                 }
1096
1097                 return ret;
1098         },
1099
1100         grep: function( elems, callback, inv ) {
1101                 var ret = [];
1102
1103                 // Go through the array, only saving the items
1104                 // that pass the validator function
1105                 for ( var i = 0, length = elems.length; i < length; i++ )
1106                         if ( !inv != !callback( elems[ i ], i ) )
1107                                 ret.push( elems[ i ] );
1108
1109                 return ret;
1110         },
1111
1112         map: function( elems, callback ) {
1113                 var ret = [];
1114
1115                 // Go through the array, translating each of the items to their
1116                 // new value (or values).
1117                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1118                         var value = callback( elems[ i ], i );
1119
1120                         if ( value != null )
1121                                 ret[ ret.length ] = value;
1122                 }
1123
1124                 return ret.concat.apply( [], ret );
1125         }
1126 });
1127
1128 // Use of jQuery.browser is deprecated.
1129 // It's included for backwards compatibility and plugins,
1130 // although they should work to migrate away.
1131
1132 var userAgent = navigator.userAgent.toLowerCase();
1133
1134 // Figure out what browser is being used
1135 jQuery.browser = {
1136         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
1137         safari: /webkit/.test( userAgent ),
1138         opera: /opera/.test( userAgent ),
1139         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1140         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1141 };
1142
1143 // Check to see if the W3C box model is being used
1144 jQuery.boxModel = !jQuery.browser.msie || document.compatMode == "CSS1Compat";
1145
1146 jQuery.each({
1147         parent: function(elem){return elem.parentNode;},
1148         parents: function(elem){return jQuery.dir(elem,"parentNode");},
1149         next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
1150         prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
1151         nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
1152         prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
1153         siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
1154         children: function(elem){return jQuery.sibling(elem.firstChild);},
1155         contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
1156 }, function(name, fn){
1157         jQuery.fn[ name ] = function( selector ) {
1158                 var ret = jQuery.map( this, fn );
1159
1160                 if ( selector && typeof selector == "string" )
1161                         ret = jQuery.multiFilter( selector, ret );
1162
1163                 return this.pushStack( jQuery.unique( ret ), name, selector );
1164         };
1165 });
1166
1167 jQuery.each({
1168         appendTo: "append",
1169         prependTo: "prepend",
1170         insertBefore: "before",
1171         insertAfter: "after",
1172         replaceAll: "replaceWith"
1173 }, function(name, original){
1174         jQuery.fn[ name ] = function() {
1175                 var args = arguments;
1176
1177                 return this.each(function(){
1178                         for ( var i = 0, length = args.length; i < length; i++ )
1179                                 jQuery( args[ i ] )[ original ]( this );
1180                 });
1181         };
1182 });
1183
1184 jQuery.each({
1185         removeAttr: function( name ) {
1186                 jQuery.attr( this, name, "" );
1187                 if (this.nodeType == 1)
1188                         this.removeAttribute( name );
1189         },
1190
1191         addClass: function( classNames ) {
1192                 jQuery.className.add( this, classNames );
1193         },
1194
1195         removeClass: function( classNames ) {
1196                 jQuery.className.remove( this, classNames );
1197         },
1198
1199         toggleClass: function( classNames, state ) {
1200                 if( typeof state !== "boolean" )
1201                         state = !jQuery.className.has( this, classNames );
1202                 jQuery.className[ state ? "add" : "remove" ]( this, classNames );
1203         },
1204
1205         remove: function( selector ) {
1206                 if ( !selector || jQuery.filter( selector, [ this ] ).length ) {
1207                         // Prevent memory leaks
1208                         jQuery( "*", this ).add([this]).each(function(){
1209                                 jQuery.event.remove(this);
1210                                 jQuery.removeData(this);
1211                         });
1212                         if (this.parentNode)
1213                                 this.parentNode.removeChild( this );
1214                 }
1215         },
1216
1217         empty: function() {
1218                 // Remove element nodes and prevent memory leaks
1219                 jQuery( ">*", this ).remove();
1220
1221                 // Remove any remaining nodes
1222                 while ( this.firstChild )
1223                         this.removeChild( this.firstChild );
1224         }
1225 }, function(name, fn){
1226         jQuery.fn[ name ] = function(){
1227                 return this.each( fn, arguments );
1228         };
1229 });
1230
1231 // Helper function used by the dimensions and offset modules
1232 function num(elem, prop) {
1233         return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
1234 }