src/selector.js

   1 /*!
   2  * Sizzle CSS Selector Engine - v0.9.1
   3  *  Copyright 2009, The Dojo Foundation
   4  *  Released under the MIT, BSD, and GPL Licenses.
   5  *  More information: http://sizzlejs.com/
   6  */
   7 (function(){
   8
   9 var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|[^[\]]+)+\]|\\.|[^ >+~,(\[]+)+|[>+~])(\s*,\s*)?/g,
  10         done = 0,
  11         toString = Object.prototype.toString;
  12
  13 var Sizzle = function(selector, context, results, seed) {
  14         results = results || [];
  15         context = context || document;
  16
  17         if ( context.nodeType !== 1 && context.nodeType !== 9 )
  18                 return [];
  19
  20         if ( !selector || typeof selector !== "string" ) {
  21                 return results;
  22         }
  23
  24         var parts = [], m, set, checkSet, check, mode, extra, prune = true;
  25
  26         // Reset the position of the chunker regexp (start from head)
  27         chunker.lastIndex = 0;
  28
  29         while ( (m = chunker.exec(selector)) !== null ) {
  30                 parts.push( m[1] );
  31
  32                 if ( m[2] ) {
  33                         extra = RegExp.rightContext;
  34                         break;
  35                 }
  36         }
  37
  38         if ( parts.length > 1 && Expr.match.POS.exec( selector ) ) {
  39                 if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
  40                         var later = "", match;
  41
  42                         // Position selectors must be done after the filter
  43                         while ( (match = Expr.match.POS.exec( selector )) ) {
  44                                 later += match[0];
  45                                 selector = selector.replace( Expr.match.POS, "" );
  46                         }
  47
  48                         set = Sizzle.filter( later, Sizzle( selector, context ) );
  49                 } else {
  50                         set = Expr.relative[ parts[0] ] ?
  51                                 [ context ] :
  52                                 Sizzle( parts.shift(), context );
  53
  54                         while ( parts.length ) {
  55                                 var tmpSet = [];
  56
  57                                 selector = parts.shift();
  58                                 if ( Expr.relative[ selector ] )
  59                                         selector += parts.shift();
  60
  61                                 for ( var i = 0, l = set.length; i < l; i++ ) {
  62                                         Sizzle( selector, set[i], tmpSet );
  63                                 }
  64
  65                                 set = tmpSet;
  66                         }
  67                 }
  68         } else {
  69                 var ret = seed ?
  70                         { expr: parts.pop(), set: makeArray(seed) } :
  71                         Sizzle.find( parts.pop(), parts.length === 1 && context.parentNode ? context.parentNode : context );
  72                 set = Sizzle.filter( ret.expr, ret.set );
  73
  74                 if ( parts.length > 0 ) {
  75                         checkSet = makeArray(set);
  76                 } else {
  77                         prune = false;
  78                 }
  79
  80                 while ( parts.length ) {
  81                         var cur = parts.pop(), pop = cur;
  82
  83                         if ( !Expr.relative[ cur ] ) {
  84                                 cur = "";
  85                         } else {
  86                                 pop = parts.pop();
  87                         }
  88
  89                         if ( pop == null ) {
  90                                 pop = context;
  91                         }
  92
  93                         Expr.relative[ cur ]( checkSet, pop, isXML(context) );
  94                 }
  95         }
  96
  97         if ( !checkSet ) {
  98                 checkSet = set;
  99         }
 100
 101         if ( !checkSet ) {
 102                 throw "Syntax error, unrecognized expression: " + (cur || selector);
 103         }
 104
 105         if ( toString.call(checkSet) === "[object Array]" ) {
 106                 if ( !prune ) {
 107                         results.push.apply( results, checkSet );
 108                 } else if ( context.nodeType === 1 ) {
 109                         for ( var i = 0; checkSet[i] != null; i++ ) {
 110                                 if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
 111                                         results.push( set[i] );
 112                                 }
 113                         }
 114                 } else {
 115                         for ( var i = 0; checkSet[i] != null; i++ ) {
 116                                 if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
 117                                         results.push( set[i] );
 118                                 }
 119                         }
 120                 }
 121         } else {
 122                 makeArray( checkSet, results );
 123         }
 124
 125         if ( extra ) {
 126                 Sizzle( extra, context, results, seed );
 127         }
 128
 129         return results;
 130 };
 131
 132 Sizzle.matches = function(expr, set){
 133         return Sizzle(expr, null, null, set);
 134 };
 135
 136 Sizzle.find = function(expr, context){
 137         var set, match;
 138
 139         if ( !expr ) {
 140                 return [];
 141         }
 142
 143         for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
 144                 var type = Expr.order[i], match;
 145
 146                 if ( (match = Expr.match[ type ].exec( expr )) ) {
 147                         var left = RegExp.leftContext;
 148
 149                         if ( left.substr( left.length - 1 ) !== "\\" ) {
 150                                 match[1] = (match[1] || "").replace(/\\/g, "");
 151                                 set = Expr.find[ type ]( match, context );
 152                                 if ( set != null ) {
 153                                         expr = expr.replace( Expr.match[ type ], "" );
 154                                         break;
 155                                 }
 156                         }
 157                 }
 158         }
 159
 160         if ( !set ) {
 161                 set = context.getElementsByTagName("*");
 162         }
 163
 164         return {set: set, expr: expr};
 165 };
 166
 167 Sizzle.filter = function(expr, set, inplace, not){
 168         var old = expr, result = [], curLoop = set, match, anyFound;
 169
 170         while ( expr && set.length ) {
 171                 for ( var type in Expr.filter ) {
 172                         if ( (match = Expr.match[ type ].exec( expr )) != null ) {
 173                                 var filter = Expr.filter[ type ], goodArray = null, goodPos = 0, found, item;
 174                                 anyFound = false;
 175
 176                                 if ( curLoop == result ) {
 177                                         result = [];
 178                                 }
 179
 180                                 if ( Expr.preFilter[ type ] ) {
 181                                         match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not );
 182
 183                                         if ( !match ) {
 184                                                 anyFound = found = true;
 185                                         } else if ( match[0] === true ) {
 186                                                 goodArray = [];
 187                                                 var last = null, elem;
 188                                                 for ( var i = 0; (elem = curLoop[i]) !== undefined; i++ ) {
 189                                                         if ( elem && last !== elem ) {
 190                                                                 goodArray.push( elem );
 191                                                                 last = elem;
 192                                                         }
 193                                                 }
 194                                         }
 195                                 }
 196
 197                                 if ( match ) {
 198                                         for ( var i = 0; (item = curLoop[i]) !== undefined; i++ ) {
 199                                                 if ( item ) {
 200                                                         if ( goodArray && item != goodArray[goodPos] ) {
 201                                                                 goodPos++;
 202                                                         }
 203
 204                                                         found = filter( item, match, goodPos, goodArray );
 205                                                         var pass = not ^ !!found;
 206
 207                                                         if ( inplace && found != null ) {
 208                                                                 if ( pass ) {
 209                                                                         anyFound = true;
 210                                                                 } else {
 211                                                                         curLoop[i] = false;
 212                                                                 }
 213                                                         } else if ( pass ) {
 214                                                                 result.push( item );
 215                                                                 anyFound = true;
 216                                                         }
 217                                                 }
 218                                         }
 219                                 }
 220
 221                                 if ( found !== undefined ) {
 222                                         if ( !inplace ) {
 223                                                 curLoop = result;
 224                                         }
 225
 226                                         expr = expr.replace( Expr.match[ type ], "" );
 227
 228                                         if ( !anyFound ) {
 229                                                 return [];
 230                                         }
 231
 232                                         break;
 233                                 }
 234                         }
 235                 }
 236
 237                 expr = expr.replace(/\s*,\s*/, "");
 238
 239                 // Improper expression
 240                 if ( expr == old ) {
 241                         if ( anyFound == null ) {
 242                                 throw "Syntax error, unrecognized expression: " + expr;
 243                         } else {
 244                                 break;
 245                         }
 246                 }
 247
 248                 old = expr;
 249         }
 250
 251         return curLoop;
 252 };
 253
 254 var Expr = Sizzle.selectors = {
 255         order: [ "ID", "NAME", "TAG" ],
 256         match: {
 257                 ID: /#((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 258                 CLASS: /\.((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 259                 NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF_-]|\\.)+)['"]*\]/,
 260                 ATTR: /\[((?:[\w\u00c0-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\]/,
 261                 TAG: /^((?:[\w\u00c0-\uFFFF\*_-]|\\.)+)/,
 262                 CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
 263                 POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
 264                 PSEUDO: /:((?:[\w\u00c0-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
 265         },
 266         attrMap: {
 267                 "class": "className",
 268                 "for": "htmlFor"
 269         },
 270         relative: {
 271                 "+": function(checkSet, part){
 272                         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 273                                 var elem = checkSet[i];
 274                                 if ( elem ) {
 275                                         var cur = elem.previousSibling;
 276                                         while ( cur && cur.nodeType !== 1 ) {
 277                                                 cur = cur.previousSibling;
 278                                         }
 279                                         checkSet[i] = typeof part === "string" ?
 280                                                 cur || false :
 281                                                 cur === part;
 282                                 }
 283                         }
 284
 285                         if ( typeof part === "string" ) {
 286                                 Sizzle.filter( part, checkSet, true );
 287                         }
 288                 },
 289                 ">": function(checkSet, part, isXML){
 290                         if ( typeof part === "string" && !/\W/.test(part) ) {
 291                                 part = isXML ? part : part.toUpperCase();
 292
 293                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 294                                         var elem = checkSet[i];
 295                                         if ( elem ) {
 296                                                 var parent = elem.parentNode;
 297                                                 checkSet[i] = parent.nodeName === part ? parent : false;
 298                                         }
 299                                 }
 300                         } else {
 301                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 302                                         var elem = checkSet[i];
 303                                         if ( elem ) {
 304                                                 checkSet[i] = typeof part === "string" ?
 305                                                         elem.parentNode :
 306                                                         elem.parentNode === part;
 307                                         }
 308                                 }
 309
 310                                 if ( typeof part === "string" ) {
 311                                         Sizzle.filter( part, checkSet, true );
 312                                 }
 313                         }
 314                 },
 315                 "": function(checkSet, part, isXML){
 316                         var doneName = "done" + (done++), checkFn = dirCheck;
 317
 318                         if ( !part.match(/\W/) ) {
 319                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 320                                 checkFn = dirNodeCheck;
 321                         }
 322
 323                         checkFn("parentNode", part, doneName, checkSet, nodeCheck);
 324                 },
 325                 "~": function(checkSet, part, isXML){
 326                         var doneName = "done" + (done++), checkFn = dirCheck;
 327
 328                         if ( typeof part === "string" && !part.match(/\W/) ) {
 329                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 330                                 checkFn = dirNodeCheck;
 331                         }
 332
 333                         checkFn("previousSibling", part, doneName, checkSet, nodeCheck);
 334                 }
 335         },
 336         find: {
 337                 ID: function(match, context){
 338                         if ( context.getElementById ) {
 339                                 var m = context.getElementById(match[1]);
 340                                 return m ? [m] : [];
 341                         }
 342                 },
 343                 NAME: function(match, context){
 344                         return context.getElementsByName ? context.getElementsByName(match[1]) : null;
 345                 },
 346                 TAG: function(match, context){
 347                         return context.getElementsByTagName(match[1]);
 348                 }
 349         },
 350         preFilter: {
 351                 CLASS: function(match, curLoop, inplace, result, not){
 352                         match = " " + match[1].replace(/\\/g, "") + " ";
 353
 354                         for ( var i = 0; curLoop[i]; i++ ) {
 355                                 if ( not ^ (" " + curLoop[i].className + " ").indexOf(match) >= 0 ) {
 356                                         if ( !inplace )
 357                                                 result.push( curLoop[i] );
 358                                 } else if ( inplace ) {
 359                                         curLoop[i] = false;
 360                                 }
 361                         }
 362
 363                         return false;
 364                 },
 365                 ID: function(match){
 366                         return match[1].replace(/\\/g, "");
 367                 },
 368                 TAG: function(match, curLoop){
 369                         for ( var i = 0; !curLoop[i]; i++ ){}
 370                         return isXML(curLoop[i]) ? match[1] : match[1].toUpperCase();
 371                 },
 372                 CHILD: function(match){
 373                         if ( match[1] == "nth" ) {
 374                                 // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
 375                                 var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
 376                                         match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
 377                                         !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);
 378
 379                                 // calculate the numbers (first)n+(last) including if they are negative
 380                                 match[2] = (test[1] + (test[2] || 1)) - 0;
 381                                 match[3] = test[3] - 0;
 382                         }
 383
 384                         // TODO: Move to normal caching system
 385                         match[0] = "done" + (done++);
 386
 387                         return match;
 388                 },
 389                 ATTR: function(match){
 390                         var name = match[1];
 391
 392                         if ( Expr.attrMap[name] ) {
 393                                 match[1] = Expr.attrMap[name];
 394                         }
 395
 396                         if ( match[2] === "~=" ) {
 397                                 match[4] = " " + match[4] + " ";
 398                         }
 399
 400                         return match;
 401                 },
 402                 PSEUDO: function(match, curLoop, inplace, result, not){
 403                         if ( match[1] === "not" ) {
 404                                 // If we're dealing with a complex expression, or a simple one
 405                                 if ( match[3].match(chunker).length > 1 ) {
 406                                         match[3] = Sizzle(match[3], null, null, curLoop);
 407                                 } else {
 408                                         var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
 409                                         if ( !inplace ) {
 410                                                 result.push.apply( result, ret );
 411                                         }
 412                                         return false;
 413                                 }
 414                         }
 415
 416                         return match;
 417                 },
 418                 POS: function(match){
 419                         match.unshift( true );
 420                         return match;
 421                 }
 422         },
 423         filters: {
 424                 enabled: function(elem){
 425                         return elem.disabled === false && elem.type !== "hidden";
 426                 },
 427                 disabled: function(elem){
 428                         return elem.disabled === true;
 429                 },
 430                 checked: function(elem){
 431                         return elem.checked === true;
 432                 },
 433                 selected: function(elem){
 434                         // Accessing this property makes selected-by-default
 435                         // options in Safari work properly
 436                         elem.parentNode.selectedIndex;
 437                         return elem.selected === true;
 438                 },
 439                 parent: function(elem){
 440                         return !!elem.firstChild;
 441                 },
 442                 empty: function(elem){
 443                         return !elem.firstChild;
 444                 },
 445                 has: function(elem, i, match){
 446                         return !!Sizzle( match[3], elem ).length;
 447                 },
 448                 header: function(elem){
 449                         return /h\d/i.test( elem.nodeName );
 450                 },
 451                 text: function(elem){
 452                         return "text" === elem.type;
 453                 },
 454                 radio: function(elem){
 455                         return "radio" === elem.type;
 456                 },
 457                 checkbox: function(elem){
 458                         return "checkbox" === elem.type;
 459                 },
 460                 file: function(elem){
 461                         return "file" === elem.type;
 462                 },
 463                 password: function(elem){
 464                         return "password" === elem.type;
 465                 },
 466                 submit: function(elem){
 467                         return "submit" === elem.type;
 468                 },
 469                 image: function(elem){
 470                         return "image" === elem.type;
 471                 },
 472                 reset: function(elem){
 473                         return "reset" === elem.type;
 474                 },
 475                 button: function(elem){
 476                         return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
 477                 },
 478                 input: function(elem){
 479                         return /input|select|textarea|button/i.test(elem.nodeName);
 480                 }
 481         },
 482         setFilters: {
 483                 first: function(elem, i){
 484                         return i === 0;
 485                 },
 486                 last: function(elem, i, match, array){
 487                         return i === array.length - 1;
 488                 },
 489                 even: function(elem, i){
 490                         return i % 2 === 0;
 491                 },
 492                 odd: function(elem, i){
 493                         return i % 2 === 1;
 494                 },
 495                 lt: function(elem, i, match){
 496                         return i < match[3] - 0;
 497                 },
 498                 gt: function(elem, i, match){
 499                         return i > match[3] - 0;
 500                 },
 501                 nth: function(elem, i, match){
 502                         return match[3] - 0 == i;
 503                 },
 504                 eq: function(elem, i, match){
 505                         return match[3] - 0 == i;
 506                 }
 507         },
 508         filter: {
 509                 CHILD: function(elem, match){
 510                         var type = match[1], parent = elem.parentNode;
 511
 512                         var doneName = match[0];
 513
 514                         if ( parent && !parent[ doneName ] ) {
 515                                 var count = 1;
 516
 517                                 for ( var node = parent.firstChild; node; node = node.nextSibling ) {
 518                                         if ( node.nodeType == 1 ) {
 519                                                 node.nodeIndex = count++;
 520                                         }
 521                                 }
 522
 523                                 parent[ doneName ] = count - 1;
 524                         }
 525
 526                         if ( type == "first" ) {
 527                                 return elem.nodeIndex == 1;
 528                         } else if ( type == "last" ) {
 529                                 return elem.nodeIndex == parent[ doneName ];
 530                         } else if ( type == "only" ) {
 531                                 return parent[ doneName ] == 1;
 532                         } else if ( type == "nth" ) {
 533                                 var add = false, first = match[2], last = match[3];
 534
 535                                 if ( first == 1 && last == 0 ) {
 536                                         return true;
 537                                 }
 538
 539                                 if ( first == 0 ) {
 540                                         if ( elem.nodeIndex == last ) {
 541                                                 add = true;
 542                                         }
 543                                 } else if ( (elem.nodeIndex - last) % first == 0 && (elem.nodeIndex - last) / first >= 0 ) {
 544                                         add = true;
 545                                 }
 546
 547                                 return add;
 548                         }
 549                 },
 550                 PSEUDO: function(elem, match, i, array){
 551                         var name = match[1], filter = Expr.filters[ name ];
 552
 553                         if ( filter ) {
 554                                 return filter( elem, i, match, array );
 555                         } else if ( name === "contains" ) {
 556                                 return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
 557                         } else if ( name === "not" ) {
 558                                 var not = match[3];
 559
 560                                 for ( var i = 0, l = not.length; i < l; i++ ) {
 561                                         if ( not[i] === elem ) {
 562                                                 return false;
 563                                         }
 564                                 }
 565
 566                                 return true;
 567                         }
 568                 },
 569                 ID: function(elem, match){
 570                         return elem.nodeType === 1 && elem.getAttribute("id") === match;
 571                 },
 572                 TAG: function(elem, match){
 573                         return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
 574                 },
 575                 CLASS: function(elem, match){
 576                         return match.test( elem.className );
 577                 },
 578                 ATTR: function(elem, match){
 579                         var result = elem[ match[1] ] || elem.getAttribute( match[1] ), value = result + "", type = match[2], check = match[4];
 580                         return result == null ?
 581                                 false :
 582                                 type === "=" ?
 583                                 value === check :
 584                                 type === "*=" ?
 585                                 value.indexOf(check) >= 0 :
 586                                 type === "~=" ?
 587                                 (" " + value + " ").indexOf(check) >= 0 :
 588                                 !match[4] ?
 589                                 result :
 590                                 type === "!=" ?
 591                                 value != check :
 592                                 type === "^=" ?
 593                                 value.indexOf(check) === 0 :
 594                                 type === "$=" ?
 595                                 value.substr(value.length - check.length) === check :
 596                                 type === "|=" ?
 597                                 value === check || value.substr(0, check.length + 1) === check + "-" :
 598                                 false;
 599                 },
 600                 POS: function(elem, match, i, array){
 601                         var name = match[2], filter = Expr.setFilters[ name ];
 602
 603                         if ( filter ) {
 604                                 return filter( elem, i, match, array );
 605                         }
 606                 }
 607         }
 608 };
 609
 610 for ( var type in Expr.match ) {
 611         Expr.match[ type ] = RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
 612 }
 613
 614 var makeArray = function(array, results) {
 615         array = Array.prototype.slice.call( array );
 616
 617         if ( results ) {
 618                 results.push.apply( results, array );
 619                 return results;
 620         }
 621
 622         return array;
 623 };
 624
 625 // Perform a simple check to determine if the browser is capable of
 626 // converting a NodeList to an array using builtin methods.
 627 try {
 628         Array.prototype.slice.call( document.documentElement.childNodes );
 629
 630 // Provide a fallback method if it does not work
 631 } catch(e){
 632         makeArray = function(array, results) {
 633                 var ret = results || [];
 634
 635                 if ( toString.call(array) === "[object Array]" ) {
 636                         Array.prototype.push.apply( ret, array );
 637                 } else {
 638                         if ( typeof array.length === "number" ) {
 639                                 for ( var i = 0, l = array.length; i < l; i++ ) {
 640                                         ret.push( array[i] );
 641                                 }
 642                         } else {
 643                                 for ( var i = 0; array[i]; i++ ) {
 644                                         ret.push( array[i] );
 645                                 }
 646                         }
 647                 }
 648
 649                 return ret;
 650         };
 651 }
 652
 653 // Check to see if the browser returns elements by name when
 654 // querying by getElementById (and provide a workaround)
 655 (function(){
 656         // We're going to inject a fake input element with a specified name
 657         var form = document.createElement("form"),
 658                 id = "script" + (new Date).getTime();
 659         form.innerHTML = "<input name='" + id + "'/>";
 660
 661         // Inject it into the root element, check its status, and remove it quickly
 662         var root = document.documentElement;
 663         root.insertBefore( form, root.firstChild );
 664
 665         // The workaround has to do additional checks after a getElementById
 666         // Which slows things down for other browsers (hence the branching)
 667         if ( !!document.getElementById( id ) ) {
 668                 Expr.find.ID = function(match, context){
 669                         if ( context.getElementById ) {
 670                                 var m = context.getElementById(match[1]);
 671                                 return m ? m.id === match[1] || m.getAttributeNode && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
 672                         }
 673                 };
 674
 675                 Expr.filter.ID = function(elem, match){
 676                         var node = elem.getAttributeNode && elem.getAttributeNode("id");
 677                         return elem.nodeType === 1 && node && node.nodeValue === match;
 678                 };
 679         }
 680
 681         root.removeChild( form );
 682 })();
 683
 684 // Check to see if the browser returns only elements
 685 // when doing getElementsByTagName("*")
 686 (function(){
 687         // Create a fake element
 688         var div = document.createElement("div");
 689         div.appendChild( document.createComment("") );
 690
 691         // Make sure no comments are found
 692         if ( div.getElementsByTagName("*").length > 0 ) {
 693                 Expr.find.TAG = function(match, context){
 694                         var results = context.getElementsByTagName(match[1]);
 695
 696                         // Filter out possible comments
 697                         if ( match[1] === "*" ) {
 698                                 var tmp = [];
 699
 700                                 for ( var i = 0; results[i]; i++ ) {
 701                                         if ( results[i].nodeType === 1 ) {
 702                                                 tmp.push( results[i] );
 703                                         }
 704                                 }
 705
 706                                 results = tmp;
 707                         }
 708
 709                         return results;
 710                 };
 711         }
 712 })();
 713
 714 if ( document.querySelectorAll ) (function(){
 715         var oldSizzle = Sizzle;
 716
 717         Sizzle = function(query, context, extra, seed){
 718                 context = context || document;
 719
 720                 if ( !seed && context.nodeType === 9 ) {
 721                         try {
 722                                 return makeArray( context.querySelectorAll(query), extra );
 723                         } catch(e){}
 724                 }
 725
 726                 return oldSizzle(query, context, extra, seed);
 727         };
 728
 729         Sizzle.find = oldSizzle.find;
 730         Sizzle.filter = oldSizzle.filter;
 731         Sizzle.selectors = oldSizzle.selectors;
 732         Sizzle.matches = oldSizzle.matches;
 733 })();
 734
 735 if ( document.documentElement.getElementsByClassName ) {
 736         Expr.order.splice(1, 0, "CLASS");
 737         Expr.find.CLASS = function(match, context) {
 738                 return context.getElementsByClassName(match[1]);
 739         };
 740 }
 741
 742 function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck ) {
 743         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 744                 var elem = checkSet[i];
 745                 if ( elem ) {
 746                         elem = elem[dir];
 747                         var match = false;
 748
 749                         while ( elem && elem.nodeType ) {
 750                                 var done = elem[doneName];
 751                                 if ( done ) {
 752                                         match = checkSet[ done ];
 753                                         break;
 754                                 }
 755
 756                                 if ( elem.nodeType === 1 )
 757                                         elem[doneName] = i;
 758
 759                                 if ( elem.nodeName === cur ) {
 760                                         match = elem;
 761                                         break;
 762                                 }
 763
 764                                 elem = elem[dir];
 765                         }
 766
 767                         checkSet[i] = match;
 768                 }
 769         }
 770 }
 771
 772 function dirCheck( dir, cur, doneName, checkSet, nodeCheck ) {
 773         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 774                 var elem = checkSet[i];
 775                 if ( elem ) {
 776                         elem = elem[dir];
 777                         var match = false;
 778
 779                         while ( elem && elem.nodeType ) {
 780                                 if ( elem[doneName] ) {
 781                                         match = checkSet[ elem[doneName] ];
 782                                         break;
 783                                 }
 784
 785                                 if ( elem.nodeType === 1 ) {
 786                                         elem[doneName] = i;
 787
 788                                         if ( typeof cur !== "string" ) {
 789                                                 if ( elem === cur ) {
 790                                                         match = true;
 791                                                         break;
 792                                                 }
 793
 794                                         } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
 795                                                 match = elem;
 796                                                 break;
 797                                         }
 798                                 }
 799
 800                                 elem = elem[dir];
 801                         }
 802
 803                         checkSet[i] = match;
 804                 }
 805         }
 806 }
 807
 808 var contains = document.compareDocumentPosition ?  function(a, b){
 809         return a.compareDocumentPosition(b) & 16;
 810 } : function(a, b){
 811         return a !== b && (a.contains ? a.contains(b) : true);
 812 };
 813
 814 var isXML = function(elem){
 815         return elem.documentElement && !elem.body ||
 816                 elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 817 };
 818
 819 // EXPOSE
 820 jQuery.find = Sizzle;
 821 jQuery.filter = Sizzle.filter;
 822 jQuery.expr = Sizzle.selectors;
 823 jQuery.expr[":"] = jQuery.expr.filters;
 824
 825 Sizzle.selectors.filters.hidden = function(elem){
 826         return "hidden" === elem.type ||
 827                 jQuery.css(elem, "display") === "none" ||
 828                 jQuery.css(elem, "visibility") === "hidden";
 829 };
 830
 831 Sizzle.selectors.filters.visible = function(elem){
 832         return "hidden" !== elem.type &&
 833                 jQuery.css(elem, "display") !== "none" &&
 834                 jQuery.css(elem, "visibility") !== "hidden";
 835 };
 836
 837 Sizzle.selectors.filters.animated = function(elem){
 838         return jQuery.grep(jQuery.timers, function(fn){
 839                 return elem === fn.elem;
 840         }).length;
 841 };
 842
 843 jQuery.multiFilter = function( expr, elems, not ) {
 844         if ( not ) {
 845                 expr = ":not(" + expr + ")";
 846         }
 847
 848         return Sizzle.matches(expr, elems);
 849 };
 850
 851 jQuery.dir = function( elem, dir ){
 852         var matched = [], cur = elem[dir];
 853         while ( cur && cur != document ) {
 854                 if ( cur.nodeType == 1 )
 855                         matched.push( cur );
 856                 cur = cur[dir];
 857         }
 858         return matched;
 859 };
 860
 861 jQuery.nth = function(cur, result, dir, elem){
 862         result = result || 1;
 863         var num = 0;
 864
 865         for ( ; cur; cur = cur[dir] )
 866                 if ( cur.nodeType == 1 && ++num == result )
 867                         break;
 868
 869         return cur;
 870 };
 871
 872 jQuery.sibling = function(n, elem){
 873         var r = [];
 874
 875         for ( ; n; n = n.nextSibling ) {
 876                 if ( n.nodeType == 1 && n != elem )
 877                         r.push( n );
 878         }
 879
 880         return r;
 881 };
 882
 883 return;
 884
 885 window.Sizzle = Sizzle;
 886
 887 })();