src/core.js

   1 /*
   2  * jQuery @VERSION - New Wave Javascript
   3  *
   4  * Copyright (c) 2007 John Resig (jquery.com)
   5  * Dual licensed under the MIT (MIT-LICENSE.txt)
   6  * and GPL (GPL-LICENSE.txt) licenses.
   7  *
   8  * $Date$
   9  * $Rev$
  10  */
  11
  12 // Map over jQuery in case of overwrite
  13 if ( typeof jQuery != "undefined" )
  14         var _jQuery = jQuery;
  15
  16 var jQuery = window.jQuery = function(a,c) {
  17         // If the context is global, return a new object
  18         if ( window == this || !this.init )
  19                 return new jQuery(a,c);
  20
  21         return this.init(a,c);
  22 };
  23
  24 // Map over the $ in case of overwrite
  25 if ( typeof $ != "undefined" )
  26         var _$ = $;
  27
  28 // Map the jQuery namespace to the '$' one
  29 window.$ = jQuery;
  30
  31 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/;
  32
  33 jQuery.fn = jQuery.prototype = {
  34         init: function(a,c) {
  35                 // Make sure that a selection was provided
  36                 a = a || document;
  37
  38                 // Handle HTML strings
  39                 if ( typeof a  == "string" ) {
  40                         var m = quickExpr.exec(a);
  41                         if ( m && (m[1] || !c) ) {
  42                                 // HANDLE: $(html) -> $(array)
  43                                 if ( m[1] )
  44                                         a = jQuery.clean( [ m[1] ], c );
  45
  46                                 // HANDLE: $("#id")
  47                                 else {
  48                                         var tmp = document.getElementById( m[3] );
  49                                         if ( tmp )
  50                                                 // Handle the case where IE and Opera return items
  51                                                 // by name instead of ID
  52                                                 if ( tmp.id != m[3] )
  53                                                         return jQuery().find( a );
  54                                                 else {
  55                                                         this[0] = tmp;
  56                                                         this.length = 1;
  57                                                         return this;
  58                                                 }
  59                                         else
  60                                                 a = [];
  61                                 }
  62
  63                         // HANDLE: $(expr)
  64                         } else
  65                                 return new jQuery( c ).find( a );
  66
  67                 // HANDLE: $(function)
  68                 // Shortcut for document ready
  69                 } else if ( jQuery.isFunction(a) )
  70                         return new jQuery(document)[ jQuery.fn.ready ? "ready" : "load" ]( a );
  71
  72                 return this.setArray(
  73                         // HANDLE: $(array)
  74                         a.constructor == Array && a ||
  75
  76                         // HANDLE: $(arraylike)
  77                         // Watch for when an array-like object is passed as the selector
  78                         (a.jquery || a.length && a != window && !a.nodeType && a[0] != undefined && a[0].nodeType) && jQuery.makeArray( a ) ||
  79
  80                         // HANDLE: $(*)
  81                         [ a ] );
  82         },
  83
  84         jquery: "@VERSION",
  85
  86         size: function() {
  87                 return this.length;
  88         },
  89
  90         length: 0,
  91
  92         get: function( num ) {
  93                 return num == undefined ?
  94
  95                         // Return a 'clean' array
  96                         jQuery.makeArray( this ) :
  97
  98                         // Return just the object
  99                         this[num];
 100         },
 101
 102         pushStack: function( a ) {
 103                 var ret = jQuery(a);
 104                 ret.prevObject = this;
 105                 return ret;
 106         },
 107
 108         setArray: function( a ) {
 109                 this.length = 0;
 110                 Array.prototype.push.apply( this, a );
 111                 return this;
 112         },
 113
 114         each: function( fn, args ) {
 115                 return jQuery.each( this, fn, args );
 116         },
 117
 118         index: function( obj ) {
 119                 var pos = -1;
 120                 this.each(function(i){
 121                         if ( this == obj ) pos = i;
 122                 });
 123                 return pos;
 124         },
 125
 126         attr: function( key, value, type ) {
 127                 var obj = key;
 128
 129                 // Look for the case where we're accessing a style value
 130                 if ( key.constructor == String )
 131                         if ( value == undefined )
 132                                 return this.length && jQuery[ type || "attr" ]( this[0], key ) || undefined;
 133                         else {
 134                                 obj = {};
 135                                 obj[ key ] = value;
 136                         }
 137
 138                 // Check to see if we're setting style values
 139                 return this.each(function(index){
 140                         // Set all the styles
 141                         for ( var prop in obj )
 142                                 jQuery.attr(
 143                                         type ? this.style : this,
 144                                         prop, jQuery.prop(this, obj[prop], type, index, prop)
 145                                 );
 146                 });
 147         },
 148
 149         css: function( key, value ) {
 150                 return this.attr( key, value, "curCSS" );
 151         },
 152
 153         text: function(e) {
 154                 if ( typeof e != "object" && e != null )
 155                         return this.empty().append( document.createTextNode( e ) );
 156
 157                 var t = "";
 158                 jQuery.each( e || this, function(){
 159                         jQuery.each( this.childNodes, function(){
 160                                 if ( this.nodeType != 8 )
 161                                         t += this.nodeType != 1 ?
 162                                                 this.nodeValue : jQuery.fn.text([ this ]);
 163                         });
 164                 });
 165                 return t;
 166         },
 167
 168         wrapAll: function(html) {
 169                 if ( this[0] )
 170                         // The elements to wrap the target around
 171                         jQuery(html, this[0].ownerDocument)
 172                                 .clone()
 173                                 .insertBefore(this[0])
 174                                 .map(function(){
 175                                         var elem = this;
 176                                         while ( elem.firstChild )
 177                                                 elem = elem.firstChild;
 178                                         return elem;
 179                                 })
 180                                 .append(this);
 181
 182                 return this;
 183         },
 184
 185         wrapInner: function(html) {
 186                 return this.each(function(){
 187                         jQuery(this).contents().wrapAll(html);
 188                 });
 189         },
 190
 191         wrap: function(html) {
 192                 return this.each(function(){
 193                         jQuery(this).wrapAll(html);
 194                 });
 195         },
 196
 197         append: function() {
 198                 return this.domManip(arguments, true, 1, function(a){
 199                         this.appendChild( a );
 200                 });
 201         },
 202
 203         prepend: function() {
 204                 return this.domManip(arguments, true, -1, function(a){
 205                         this.insertBefore( a, this.firstChild );
 206                 });
 207         },
 208
 209         before: function() {
 210                 return this.domManip(arguments, false, 1, function(a){
 211                         this.parentNode.insertBefore( a, this );
 212                 });
 213         },
 214
 215         after: function() {
 216                 return this.domManip(arguments, false, -1, function(a){
 217                         this.parentNode.insertBefore( a, this.nextSibling );
 218                 });
 219         },
 220
 221         end: function() {
 222                 return this.prevObject || jQuery([]);
 223         },
 224
 225         find: function(t) {
 226                 var data = jQuery.map(this, function(a){ return jQuery.find(t,a); });
 227                 return this.pushStack( /[^+>] [^+>]/.test( t ) || t.indexOf("..") > -1 ?
 228                         jQuery.unique( data ) : data );
 229         },
 230
 231         clone: function(events) {
 232                 // Do the clone
 233                 var ret = this.map(function(){
 234                         return this.outerHTML ? jQuery(this.outerHTML)[0] : this.cloneNode(true);
 235                 });
 236
 237                 if (events === true) {
 238                         var clone = ret.find("*").andSelf();
 239
 240                         this.find("*").andSelf().each(function(i) {
 241                                 var events = this.$events;
 242                                 for ( var type in events )
 243                                         for ( var handler in events[type] )
 244                                                 jQuery.event.add(clone[i], type, events[type][handler], events[type][handler].data);
 245                         });
 246                 }
 247
 248                 // Return the cloned set
 249                 return ret;
 250         },
 251
 252         filter: function(t) {
 253                 return this.pushStack(
 254                         jQuery.isFunction( t ) &&
 255                         jQuery.grep(this, function(el, index){
 256                                 return t.apply(el, [index]);
 257                         }) ||
 258
 259                         jQuery.multiFilter(t,this) );
 260         },
 261
 262         not: function(t) {
 263                 return this.pushStack(
 264                         t.constructor == String &&
 265                         jQuery.multiFilter(t, this, true) ||
 266
 267                         jQuery.grep(this, function(a) {
 268                                 return ( t.constructor == Array || t.jquery )
 269                                         ? jQuery.inArray( a, t ) < 0
 270                                         : a != t;
 271                         })
 272                 );
 273         },
 274
 275         add: function(t) {
 276                 return this.pushStack( jQuery.merge(
 277                         this.get(),
 278                         t.constructor == String ?
 279                                 jQuery(t).get() :
 280                                 t.length != undefined && (!t.nodeName || t.nodeName == "FORM") ?
 281                                         t : [t] )
 282                 );
 283         },
 284
 285         is: function(expr) {
 286                 return expr ? jQuery.multiFilter(expr,this).length > 0 : false;
 287         },
 288
 289         hasClass: function(expr) {
 290                 return this.is("." + expr);
 291         },
 292
 293         val: function( val ) {
 294                 if ( val == undefined ) {
 295                     if ( this.length ) {
 296                         var elem = this[0];
 297
 298                         // We need to handle select boxes special\r                              if ( jQuery.nodeName(elem, "select") ) {\r                                       var index = elem.selectedIndex,
 299                                                 a = [],
 300                                                 options = elem.options,
 301                                                 one = elem.type == "select-one";
 302
 303                                         // Nothing was selected\r                                        if ( index < 0 )
 304                                                 return null;\r
 305
 306                                         // Loop through all the selected options\r                                       for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 307                                                 var option = options[i];\r                                               if ( option.selected ) {\r                                                       // Get the specifc value for the option\r                                                        var val = jQuery.browser.msie && !option.attributes["value"].specified ? option.text : option.value;
 308
 309                                                         // We don't need an array for one selects\r                                                      if ( one )
 310                                                                 return val;
 311
 312                                                         // Multi-Selects return an array\r                                                       a.push(val);\r                                           }\r                                      }
 313                                         \r                                       return a;
 314
 315                                 // Everything else, we just grab the value\r                             } else
 316                                         return this[0].value.replace(/\r/g, "");
 317                         }
 318                 } else
 319                         return this.attr( "value", val );
 320         },
 321
 322         html: function( val ) {
 323                 return val == undefined ?
 324                         ( this.length ? this[0].innerHTML : null ) :
 325                         this.empty().append( val );
 326         },
 327
 328         replaceWith: function( val ) {
 329                 return this.after( val ).remove();
 330         },
 331
 332         slice: function() {
 333                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 334         },
 335
 336         map: function(fn) {
 337                 return this.pushStack(jQuery.map( this, function(elem,i){
 338                         return fn.call( elem, i, elem );
 339                 }));
 340         },
 341
 342         andSelf: function() {
 343                 return this.add( this.prevObject );
 344         },
 345
 346         domManip: function(args, table, dir, fn) {
 347                 var clone = this.length > 1, a;
 348
 349                 return this.each(function(){
 350                         if ( !a ) {
 351                                 a = jQuery.clean(args, this.ownerDocument);
 352                                 if ( dir < 0 )
 353                                         a.reverse();
 354                         }
 355
 356                         var obj = this;
 357
 358                         if ( table && jQuery.nodeName(this, "table") && jQuery.nodeName(a[0], "tr") )
 359                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild(document.createElement("tbody"));
 360
 361                         jQuery.each( a, function(){
 362                                 if ( jQuery.nodeName(this, "script") ) {
 363                                         if ( this.src )
 364                                                 jQuery.ajax({ url: this.src, async: false, dataType: "script" });
 365                                         else
 366                                                 jQuery.globalEval( this.text || this.textContent || this.innerHTML || "" );
 367                                 } else
 368                                         fn.apply( obj, [ clone ? this.cloneNode(true) : this ] );
 369                         });
 370                 });
 371         }
 372 };
 373
 374 jQuery.extend = jQuery.fn.extend = function() {
 375         // copy reference to target object
 376         var target = arguments[0] || {}, a = 1, al = arguments.length, deep = false;
 377
 378         // Handle a deep copy situation
 379         if ( target.constructor == Boolean ) {
 380                 deep = target;
 381                 target = arguments[1] || {};
 382         }
 383
 384         // extend jQuery itself if only one argument is passed
 385         if ( al == 1 ) {
 386                 target = this;
 387                 a = 0;
 388         }
 389
 390         var prop;
 391
 392         for ( ; a < al; a++ )
 393                 // Only deal with non-null/undefined values
 394                 if ( (prop = arguments[a]) != null )
 395                         // Extend the base object
 396                         for ( var i in prop ) {
 397                                 // Prevent never-ending loop
 398                                 if ( target == prop[i] )
 399                                         continue;
 400
 401                                 // Recurse if we're merging object values
 402                                 if ( deep && typeof prop[i] == 'object' && target[i] )
 403                                         jQuery.extend( target[i], prop[i] );
 404
 405                                 // Don't bring in undefined values
 406                                 else if ( prop[i] != undefined )
 407                                         target[i] = prop[i];
 408                         }
 409
 410         // Return the modified object
 411         return target;
 412 };
 413
 414 jQuery.extend({
 415         noConflict: function(deep) {
 416                 window.$ = _$;
 417                 if ( deep )
 418                         window.jQuery = _jQuery;
 419                 return jQuery;
 420         },
 421
 422         // This may seem like some crazy code, but trust me when I say that this
 423         // is the only cross-browser way to do this. --John
 424         isFunction: function( fn ) {
 425                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 426                         fn.constructor != Array && /function/i.test( fn + "" );
 427         },
 428
 429         // check if an element is in a XML document
 430         isXMLDoc: function(elem) {
 431                 return elem.documentElement && !elem.body ||
 432                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 433         },
 434
 435         // Evalulates a script in a global context
 436         // Evaluates Async. in Safari 2 :-(
 437         globalEval: function( data ) {
 438                 data = jQuery.trim( data );
 439                 if ( data ) {
 440                         if ( window.execScript )
 441                                 window.execScript( data );
 442                         else if ( jQuery.browser.safari )
 443                                 // safari doesn't provide a synchronous global eval
 444                                 window.setTimeout( data, 0 );
 445                         else
 446                                 eval.call( window, data );
 447                 }
 448         },
 449
 450         nodeName: function( elem, name ) {
 451                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 452         },
 453
 454         // args is for internal usage only
 455         each: function( obj, fn, args ) {
 456                 if ( args ) {
 457                         if ( obj.length == undefined )
 458                                 for ( var i in obj )
 459                                         fn.apply( obj[i], args );
 460                         else
 461                                 for ( var i = 0, ol = obj.length; i < ol; i++ )
 462                                         if ( fn.apply( obj[i], args ) === false ) break;
 463
 464                 // A special, fast, case for the most common use of each
 465                 } else {
 466                         if ( obj.length == undefined )
 467                                 for ( var i in obj )
 468                                         fn.call( obj[i], i, obj[i] );
 469                         else
 470                                 for ( var i = 0, ol = obj.length, val = obj[0];
 471                                         i < ol && fn.call(val,i,val) !== false; val = obj[++i] ){}
 472                 }
 473
 474                 return obj;
 475         },
 476
 477         prop: function(elem, value, type, index, prop){
 478                         // Handle executable functions
 479                         if ( jQuery.isFunction( value ) )
 480                                 value = value.call( elem, [index] );
 481
 482                         // exclude the following css properties to add px
 483                         var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 484
 485                         // Handle passing in a number to a CSS property
 486                         return value && value.constructor == Number && type == "curCSS" && !exclude.test(prop) ?
 487                                 value + "px" :
 488                                 value;
 489         },
 490
 491         className: {
 492                 // internal only, use addClass("class")
 493                 add: function( elem, c ){
 494                         jQuery.each( (c || "").split(/\s+/), function(i, cur){
 495                                 if ( !jQuery.className.has( elem.className, cur ) )
 496                                         elem.className += ( elem.className ? " " : "" ) + cur;
 497                         });
 498                 },
 499
 500                 // internal only, use removeClass("class")
 501                 remove: function( elem, c ){
 502                         elem.className = c != undefined ?
 503                                 jQuery.grep( elem.className.split(/\s+/), function(cur){
 504                                         return !jQuery.className.has( c, cur );
 505                                 }).join(" ") : "";
 506                 },
 507
 508                 // internal only, use is(".class")
 509                 has: function( t, c ) {
 510                         return jQuery.inArray( c, (t.className || t).toString().split(/\s+/) ) > -1;
 511                 }
 512         },
 513
 514         swap: function(e,o,f) {
 515                 for ( var i in o ) {
 516                         e.style["old"+i] = e.style[i];
 517                         e.style[i] = o[i];
 518                 }
 519                 f.apply( e, [] );
 520                 for ( var i in o )
 521                         e.style[i] = e.style["old"+i];
 522         },
 523
 524         css: function(e,p) {
 525                 if ( p == "height" || p == "width" ) {
 526                         var old = {}, oHeight, oWidth, d = ["Top","Bottom","Right","Left"];
 527
 528                         jQuery.each( d, function(){
 529                                 old["padding" + this] = 0;
 530                                 old["border" + this + "Width"] = 0;
 531                         });
 532
 533                         jQuery.swap( e, old, function() {
 534                                 if ( jQuery(e).is(':visible') ) {
 535                                         oHeight = e.offsetHeight;
 536                                         oWidth = e.offsetWidth;
 537                                 } else {
 538                                         e = jQuery(e.cloneNode(true))
 539                                                 .find(":radio").removeAttr("checked").end()
 540                                                 .css({
 541                                                         visibility: "hidden", position: "absolute", display: "block", right: "0", left: "0"
 542                                                 }).appendTo(e.parentNode)[0];
 543
 544                                         var parPos = jQuery.css(e.parentNode,"position") || "static";
 545                                         if ( parPos == "static" )
 546                                                 e.parentNode.style.position = "relative";
 547
 548                                         oHeight = e.clientHeight;
 549                                         oWidth = e.clientWidth;
 550
 551                                         if ( parPos == "static" )
 552                                                 e.parentNode.style.position = "static";
 553
 554                                         e.parentNode.removeChild(e);
 555                                 }
 556                         });
 557
 558                         return p == "height" ? oHeight : oWidth;
 559                 }
 560
 561                 return jQuery.curCSS( e, p );
 562         },
 563
 564         curCSS: function(elem, prop, force) {
 565                 var ret, stack = [], swap = [];
 566
 567                 // A helper method for determining if an element's values are broken
 568                 function color(a){
 569                         if ( !jQuery.browser.safari )
 570                                 return false;
 571
 572                         var ret = document.defaultView.getComputedStyle(a,null);
 573                         return !ret || ret.getPropertyValue("color") == "";
 574                 }
 575
 576                 if (prop == "opacity" && jQuery.browser.msie) {
 577                         ret = jQuery.attr(elem.style, "opacity");
 578                         return ret == "" ? "1" : ret;
 579                 }
 580
 581                 if (prop.match(/float/i))
 582                         prop = styleFloat;
 583
 584                 if (!force && elem.style[prop])
 585                         ret = elem.style[prop];
 586
 587                 else if (document.defaultView && document.defaultView.getComputedStyle) {
 588
 589                         if (prop.match(/float/i))
 590                                 prop = "float";
 591
 592                         prop = prop.replace(/([A-Z])/g,"-$1").toLowerCase();
 593                         var cur = document.defaultView.getComputedStyle(elem, null);
 594
 595                         if ( cur && !color(elem) )
 596                                 ret = cur.getPropertyValue(prop);
 597
 598                         // If the element isn't reporting its values properly in Safari
 599                         // then some display: none elements are involved
 600                         else {
 601                                 // Locate all of the parent display: none elements
 602                                 for ( var a = elem; a && color(a); a = a.parentNode )
 603                                         stack.unshift(a);
 604
 605                                 // Go through and make them visible, but in reverse
 606                                 // (It would be better if we knew the exact display type that they had)
 607                                 for ( a = 0; a < stack.length; a++ )
 608                                         if ( color(stack[a]) ) {
 609                                                 swap[a] = stack[a].style.display;
 610                                                 stack[a].style.display = "block";
 611                                         }
 612
 613                                 // Since we flip the display style, we have to handle that
 614                                 // one special, otherwise get the value
 615                                 ret = prop == "display" && swap[stack.length-1] != null ?
 616                                         "none" :
 617                                         document.defaultView.getComputedStyle(elem,null).getPropertyValue(prop) || "";
 618
 619                                 // Finally, revert the display styles back
 620                                 for ( a = 0; a < swap.length; a++ )
 621                                         if ( swap[a] != null )
 622                                                 stack[a].style.display = swap[a];
 623                         }
 624
 625                         if ( prop == "opacity" && ret == "" )
 626                                 ret = "1";
 627
 628                 } else if (elem.currentStyle) {
 629                         var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
 630                         ret = elem.currentStyle[prop] || elem.currentStyle[newProp];
 631
 632                         // From the awesome hack by Dean Edwards
 633                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 634
 635                         // If we're not dealing with a regular pixel number
 636                         // but a number that has a weird ending, we need to convert it to pixels
 637                         if ( !/^\d+(px)?$/i.test(ret) && /^\d/.test(ret) ) {
 638                                 var style = elem.style.left;
 639                                 var runtimeStyle = elem.runtimeStyle.left;
 640                                 elem.runtimeStyle.left = elem.currentStyle.left;
 641                                 elem.style.left = ret || 0;
 642                                 ret = elem.style.pixelLeft + "px";
 643                                 elem.style.left = style;
 644                                 elem.runtimeStyle.left = runtimeStyle;
 645                         }
 646                 }
 647
 648                 return ret;
 649         },
 650
 651         clean: function(a, doc) {
 652                 var r = [];
 653                 doc = doc || document;
 654
 655                 jQuery.each( a, function(i,arg){
 656                         if ( !arg ) return;
 657
 658                         if ( arg.constructor == Number )
 659                                 arg = arg.toString();
 660
 661                         // Convert html string into DOM nodes
 662                         if ( typeof arg == "string" ) {
 663                                 // Fix "XHTML"-style tags in all browsers
 664                                 arg = arg.replace(/(<(\w+)[^>]*?)\/>/g, function(m, all, tag){
 665                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area)$/i)? m : all+"></"+tag+">";
 666                                 });
 667
 668                                 // Trim whitespace, otherwise indexOf won't work as expected
 669                                 var s = jQuery.trim(arg).toLowerCase(), div = doc.createElement("div"), tb = [];
 670
 671                                 var wrap =
 672                                         // option or optgroup
 673                                         !s.indexOf("<opt") &&
 674                                         [1, "<select>", "</select>"] ||
 675
 676                                         !s.indexOf("<leg") &&
 677                                         [1, "<fieldset>", "</fieldset>"] ||
 678
 679                                         s.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 680                                         [1, "<table>", "</table>"] ||
 681
 682                                         !s.indexOf("<tr") &&
 683                                         [2, "<table><tbody>", "</tbody></table>"] ||
 684
 685                                         // <thead> matched above
 686                                         (!s.indexOf("<td") || !s.indexOf("<th")) &&
 687                                         [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
 688
 689                                         !s.indexOf("<col") &&
 690                                         [2, "<table><tbody></tbody><colgroup>", "</colgroup></table>"] ||
 691
 692                                         // IE can't serialize <link> and <script> tags normally
 693                                         jQuery.browser.msie &&
 694                                         [1, "div<div>", "</div>"] ||
 695
 696                                         [0,"",""];
 697
 698                                 // Go to html and back, then peel off extra wrappers
 699                                 div.innerHTML = wrap[1] + arg + wrap[2];
 700
 701                                 // Move to the right depth
 702                                 while ( wrap[0]-- )
 703                                         div = div.lastChild;
 704
 705                                 // Remove IE's autoinserted <tbody> from table fragments
 706                                 if ( jQuery.browser.msie ) {
 707
 708                                         // String was a <table>, *may* have spurious <tbody>
 709                                         if ( !s.indexOf("<table") && s.indexOf("<tbody") < 0 )
 710                                                 tb = div.firstChild && div.firstChild.childNodes;
 711
 712                                         // String was a bare <thead> or <tfoot>
 713                                         else if ( wrap[1] == "<table>" && s.indexOf("<tbody") < 0 )
 714                                                 tb = div.childNodes;
 715
 716                                         for ( var n = tb.length-1; n >= 0 ; --n )
 717                                                 if ( jQuery.nodeName(tb[n], "tbody") && !tb[n].childNodes.length )
 718                                                         tb[n].parentNode.removeChild(tb[n]);
 719
 720                                         // IE completely kills leading whitespace when innerHTML is used
 721                                         if ( /^\s/.test(arg) )
 722                                                 div.insertBefore( doc.createTextNode( arg.match(/^\s*/)[0] ), div.firstChild );
 723
 724                                 }
 725
 726                                 arg = jQuery.makeArray( div.childNodes );
 727                         }
 728
 729                         if ( 0 === arg.length && (!jQuery.nodeName(arg, "form") && !jQuery.nodeName(arg, "select")) )
 730                                 return;
 731
 732                         if ( arg[0] == undefined || jQuery.nodeName(arg, "form") || arg.options )
 733                                 r.push( arg );
 734                         else
 735                                 r = jQuery.merge( r, arg );
 736
 737                 });
 738
 739                 return r;
 740         },
 741
 742         attr: function(elem, name, value){
 743                 var fix = jQuery.isXMLDoc(elem) ? {} : jQuery.props;
 744
 745                 // Safari mis-reports the default selected property of a hidden option
 746                 // Accessing the parent's selectedIndex property fixes it
 747                 if ( name == "selected" && jQuery.browser.safari )
 748                         elem.parentNode.selectedIndex;
 749
 750                 // Certain attributes only work when accessed via the old DOM 0 way
 751                 if ( fix[name] ) {
 752                         if ( value != undefined ) elem[fix[name]] = value;
 753                         return elem[fix[name]];
 754                 } else if ( jQuery.browser.msie && name == "style" )
 755                         return jQuery.attr( elem.style, "cssText", value );
 756
 757                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName(elem, "form") && (name == "action" || name == "method") )
 758                         return elem.getAttributeNode(name).nodeValue;
 759
 760                 // IE elem.getAttribute passes even for style
 761                 else if ( elem.tagName ) {
 762
 763                         if ( value != undefined ) {
 764                                 if ( name == "type" && jQuery.nodeName(elem,"input") && elem.parentNode )
 765                                         throw "type property can't be changed";
 766                                 elem.setAttribute( name, value );
 767                         }
 768
 769                         if ( jQuery.browser.msie && /href|src/.test(name) && !jQuery.isXMLDoc(elem) )
 770                                 return elem.getAttribute( name, 2 );
 771
 772                         return elem.getAttribute( name );
 773
 774                 // elem is actually elem.style ... set the style
 775                 } else {
 776                         // IE actually uses filters for opacity
 777                         if ( name == "opacity" && jQuery.browser.msie ) {
 778                                 if ( value != undefined ) {
 779                                         // IE has trouble with opacity if it does not have layout
 780                                         // Force it by setting the zoom level
 781                                         elem.zoom = 1;
 782
 783                                         // Set the alpha filter to set the opacity
 784                                         elem.filter = (elem.filter || "").replace(/alpha\([^)]*\)/,"") +
 785                                                 (parseFloat(value).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
 786                                 }
 787
 788                                 return elem.filter ?
 789                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() : "";
 790                         }
 791                         name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
 792                         if ( value != undefined ) elem[name] = value;
 793                         return elem[name];
 794                 }
 795         },
 796
 797         trim: function(t){
 798                 return (t||"").replace(/^\s+|\s+$/g, "");
 799         },
 800
 801         makeArray: function( a ) {
 802                 var r = [];
 803
 804                 // Need to use typeof to fight Safari childNodes crashes
 805                 if ( typeof a != "array" )
 806                         for ( var i = 0, al = a.length; i < al; i++ )
 807                                 r.push( a[i] );
 808                 else
 809                         r = a.slice( 0 );
 810
 811                 return r;
 812         },
 813
 814         inArray: function( b, a ) {
 815                 for ( var i = 0, al = a.length; i < al; i++ )
 816                         if ( a[i] == b )
 817                                 return i;
 818                 return -1;
 819         },
 820
 821         merge: function(first, second) {
 822                 // We have to loop this way because IE & Opera overwrite the length
 823                 // expando of getElementsByTagName
 824
 825                 // Also, we need to make sure that the correct elements are being returned
 826                 // (IE returns comment nodes in a '*' query)
 827                 if ( jQuery.browser.msie ) {
 828                         for ( var i = 0; second[i]; i++ )
 829                                 if ( second[i].nodeType != 8 )
 830                                         first.push(second[i]);
 831                 } else
 832                         for ( var i = 0; second[i]; i++ )
 833                                 first.push(second[i]);
 834
 835                 return first;
 836         },
 837
 838         unique: function(first) {
 839                 var r = [], num = jQuery.mergeNum++;
 840
 841                 try {
 842                         for ( var i = 0, fl = first.length; i < fl; i++ )
 843                                 if ( num != first[i].mergeNum ) {
 844                                         first[i].mergeNum = num;
 845                                         r.push(first[i]);
 846                                 }
 847                 } catch(e) {
 848                         r = first;
 849                 }
 850
 851                 return r;
 852         },
 853
 854         mergeNum: 0,
 855
 856         grep: function(elems, fn, inv) {
 857                 // If a string is passed in for the function, make a function
 858                 // for it (a handy shortcut)
 859                 if ( typeof fn == "string" )
 860                         fn = eval("false||function(a,i){return " + fn + "}");
 861
 862                 var result = [];
 863
 864                 // Go through the array, only saving the items
 865                 // that pass the validator function
 866                 for ( var i = 0, el = elems.length; i < el; i++ )
 867                         if ( !inv && fn(elems[i],i) || inv && !fn(elems[i],i) )
 868                                 result.push( elems[i] );
 869
 870                 return result;
 871         },
 872
 873         map: function(elems, fn) {
 874                 // If a string is passed in for the function, make a function
 875                 // for it (a handy shortcut)
 876                 if ( typeof fn == "string" )
 877                         fn = eval("false||function(a){return " + fn + "}");
 878
 879                 var result = [];
 880
 881                 // Go through the array, translating each of the items to their
 882                 // new value (or values).
 883                 for ( var i = 0, el = elems.length; i < el; i++ ) {
 884                         var val = fn(elems[i],i);
 885
 886                         if ( val !== null && val != undefined ) {
 887                                 if ( val.constructor != Array ) val = [val];
 888                                 result = result.concat( val );
 889                         }
 890                 }
 891
 892                 return result;
 893         }
 894 });
 895
 896 var userAgent = navigator.userAgent.toLowerCase();
 897
 898 // Figure out what browser is being used
 899 jQuery.browser = {
 900         version: (userAgent.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1],
 901         safari: /webkit/.test(userAgent),
 902         opera: /opera/.test(userAgent),
 903         msie: /msie/.test(userAgent) && !/opera/.test(userAgent),
 904         mozilla: /mozilla/.test(userAgent) && !/(compatible|webkit)/.test(userAgent)
 905 };
 906
 907 var styleFloat = jQuery.browser.msie ? "styleFloat" : "cssFloat";
 908
 909 jQuery.extend({
 910         // Check to see if the W3C box model is being used
 911         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
 912
 913         styleFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
 914
 915         props: {
 916                 "for": "htmlFor",
 917                 "class": "className",
 918                 "float": styleFloat,
 919                 cssFloat: styleFloat,
 920                 styleFloat: styleFloat,
 921                 innerHTML: "innerHTML",
 922                 className: "className",
 923                 value: "value",
 924                 disabled: "disabled",
 925                 checked: "checked",
 926                 readonly: "readOnly",
 927                 selected: "selected",
 928                 maxlength: "maxLength"
 929         }
 930 });
 931
 932 jQuery.each({
 933         parent: "a.parentNode",
 934         parents: "jQuery.parents(a)",
 935         next: "jQuery.nth(a,2,'nextSibling')",
 936         prev: "jQuery.nth(a,2,'previousSibling')",
 937         siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
 938         children: "jQuery.sibling(a.firstChild)",
 939         contents: "jQuery.nodeName(a,'iframe')?a.contentDocument||a.contentWindow.document:jQuery.makeArray(a.childNodes)"
 940 }, function(i,n){
 941         jQuery.fn[ i ] = function(a) {
 942                 var ret = jQuery.map(this,n);
 943                 if ( a && typeof a == "string" )
 944                         ret = jQuery.multiFilter(a,ret);
 945                 return this.pushStack( jQuery.unique(ret) );
 946         };
 947 });
 948
 949 jQuery.each({
 950         appendTo: "append",
 951         prependTo: "prepend",
 952         insertBefore: "before",
 953         insertAfter: "after",
 954         replaceAll: "replaceWith"
 955 }, function(i,n){
 956         jQuery.fn[ i ] = function(){
 957                 var a = arguments;
 958                 return this.each(function(){
 959                         for ( var j = 0, al = a.length; j < al; j++ )
 960                                 jQuery(a[j])[n]( this );
 961                 });
 962         };
 963 });
 964
 965 jQuery.each( {
 966         removeAttr: function( key ) {
 967                 jQuery.attr( this, key, "" );
 968                 this.removeAttribute( key );
 969         },
 970         addClass: function(c){
 971                 jQuery.className.add(this,c);
 972         },
 973         removeClass: function(c){
 974                 jQuery.className.remove(this,c);
 975         },
 976         toggleClass: function( c ){
 977                 jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this, c);
 978         },
 979         remove: function(a){
 980                 if ( !a || jQuery.filter( a, [this] ).r.length )
 981                         this.parentNode.removeChild( this );
 982         },
 983         empty: function() {
 984                 while ( this.firstChild )
 985                         this.removeChild( this.firstChild );
 986         }
 987 }, function(i,n){
 988         jQuery.fn[ i ] = function() {
 989                 return this.each( n, arguments );
 990         };
 991 });
 992
 993 jQuery.each( [ "height", "width" ], function(i,n){
 994         jQuery.fn[ n ] = function(h) {
 995                 return h == undefined ?
 996                         ( this.length ? jQuery.css( this[0], n ) : null ) :
 997                         this.css( n, h.constructor == String ? h : h + "px" );
 998         };
 999 });