src/selector.js

   1 /*!
   2  * Sizzle CSS Selector Engine - v0.9.3
   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 && origPOS.exec( selector ) ) {
  39                 if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
  40                         set = posProcess( parts[0] + parts[1], context );
  41                 } else {
  42                         set = Expr.relative[ parts[0] ] ?
  43                                 [ context ] :
  44                                 Sizzle( parts.shift(), context );
  45
  46                         while ( parts.length ) {
  47                                 selector = parts.shift();
  48
  49                                 if ( Expr.relative[ selector ] )
  50                                         selector += parts.shift();
  51
  52                                 set = posProcess( selector, set );
  53                         }
  54                 }
  55         } else {
  56                 var ret = seed ?
  57                         { expr: parts.pop(), set: makeArray(seed) } :
  58                         Sizzle.find( parts.pop(), parts.length === 1 && context.parentNode ? context.parentNode : context, isXML(context) );
  59                 set = Sizzle.filter( ret.expr, ret.set );
  60
  61                 if ( parts.length > 0 ) {
  62                         checkSet = makeArray(set);
  63                 } else {
  64                         prune = false;
  65                 }
  66
  67                 while ( parts.length ) {
  68                         var cur = parts.pop(), pop = cur;
  69
  70                         if ( !Expr.relative[ cur ] ) {
  71                                 cur = "";
  72                         } else {
  73                                 pop = parts.pop();
  74                         }
  75
  76                         if ( pop == null ) {
  77                                 pop = context;
  78                         }
  79
  80                         Expr.relative[ cur ]( checkSet, pop, isXML(context) );
  81                 }
  82         }
  83
  84         if ( !checkSet ) {
  85                 checkSet = set;
  86         }
  87
  88         if ( !checkSet ) {
  89                 throw "Syntax error, unrecognized expression: " + (cur || selector);
  90         }
  91
  92         if ( toString.call(checkSet) === "[object Array]" ) {
  93                 if ( !prune ) {
  94                         results.push.apply( results, checkSet );
  95                 } else if ( context.nodeType === 1 ) {
  96                         for ( var i = 0; checkSet[i] != null; i++ ) {
  97                                 if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
  98                                         results.push( set[i] );
  99                                 }
 100                         }
 101                 } else {
 102                         for ( var i = 0; checkSet[i] != null; i++ ) {
 103                                 if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
 104                                         results.push( set[i] );
 105                                 }
 106                         }
 107                 }
 108         } else {
 109                 makeArray( checkSet, results );
 110         }
 111
 112         if ( extra ) {
 113                 Sizzle( extra, context, results, seed );
 114
 115                 if ( sortOrder ) {
 116                         hasDuplicate = false;
 117                         results.sort(sortOrder);
 118
 119                         if ( hasDuplicate ) {
 120                                 for ( var i = 1; i < results.length; i++ ) {
 121                                         if ( results[i] === results[i-1] ) {
 122                                                 results.splice(i--, 1);
 123                                         }
 124                                 }
 125                         }
 126                 }
 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, isXML){
 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, isXML );
 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 ], 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 === true ) {
 186                                                 continue;
 187                                         }
 188                                 }
 189
 190                                 if ( match ) {
 191                                         for ( var i = 0; (item = curLoop[i]) != null; i++ ) {
 192                                                 if ( item ) {
 193                                                         found = filter( item, match, i, curLoop );
 194                                                         var pass = not ^ !!found;
 195
 196                                                         if ( inplace && found != null ) {
 197                                                                 if ( pass ) {
 198                                                                         anyFound = true;
 199                                                                 } else {
 200                                                                         curLoop[i] = false;
 201                                                                 }
 202                                                         } else if ( pass ) {
 203                                                                 result.push( item );
 204                                                                 anyFound = true;
 205                                                         }
 206                                                 }
 207                                         }
 208                                 }
 209
 210                                 if ( found !== undefined ) {
 211                                         if ( !inplace ) {
 212                                                 curLoop = result;
 213                                         }
 214
 215                                         expr = expr.replace( Expr.match[ type ], "" );
 216
 217                                         if ( !anyFound ) {
 218                                                 return [];
 219                                         }
 220
 221                                         break;
 222                                 }
 223                         }
 224                 }
 225
 226                 // Improper expression
 227                 if ( expr == old ) {
 228                         if ( anyFound == null ) {
 229                                 throw "Syntax error, unrecognized expression: " + expr;
 230                         } else {
 231                                 break;
 232                         }
 233                 }
 234
 235                 old = expr;
 236         }
 237
 238         return curLoop;
 239 };
 240
 241 var Expr = Sizzle.selectors = {
 242         order: [ "ID", "NAME", "TAG" ],
 243         match: {
 244                 ID: /#((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 245                 CLASS: /\.((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 246                 NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF_-]|\\.)+)['"]*\]/,
 247                 ATTR: /\[\s*((?:[\w\u00c0-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
 248                 TAG: /^((?:[\w\u00c0-\uFFFF\*_-]|\\.)+)/,
 249                 CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
 250                 POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
 251                 PSEUDO: /:((?:[\w\u00c0-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
 252         },
 253         attrMap: {
 254                 "class": "className",
 255                 "for": "htmlFor"
 256         },
 257         attrHandle: {
 258                 href: function(elem){
 259                         return elem.getAttribute("href");
 260                 }
 261         },
 262         relative: {
 263                 "+": function(checkSet, part, isXML){
 264                         var isPartStr = typeof part === "string",
 265                                 isTag = isPartStr && !/\W/.test(part),
 266                                 isPartStrNotTag = isPartStr && !isTag;
 267
 268                         if ( isTag && !isXML ) {
 269                                 part = part.toUpperCase();
 270                         }
 271
 272                         for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
 273                                 if ( (elem = checkSet[i]) ) {
 274                                         while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {}
 275
 276                                         checkSet[i] = isPartStrNotTag || elem && elem.nodeName === part ?
 277                                                 elem || false :
 278                                                 elem === part;
 279                                 }
 280                         }
 281
 282                         if ( isPartStrNotTag ) {
 283                                 Sizzle.filter( part, checkSet, true );
 284                         }
 285                 },
 286                 ">": function(checkSet, part, isXML){
 287                         var isPartStr = typeof part === "string";
 288
 289                         if ( isPartStr && !/\W/.test(part) ) {
 290                                 part = isXML ? part : part.toUpperCase();
 291
 292                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 293                                         var elem = checkSet[i];
 294                                         if ( elem ) {
 295                                                 var parent = elem.parentNode;
 296                                                 checkSet[i] = parent.nodeName === part ? parent : false;
 297                                         }
 298                                 }
 299                         } else {
 300                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 301                                         var elem = checkSet[i];
 302                                         if ( elem ) {
 303                                                 checkSet[i] = isPartStr ?
 304                                                         elem.parentNode :
 305                                                         elem.parentNode === part;
 306                                         }
 307                                 }
 308
 309                                 if ( isPartStr ) {
 310                                         Sizzle.filter( part, checkSet, true );
 311                                 }
 312                         }
 313                 },
 314                 "": function(checkSet, part, isXML){
 315                         var doneName = done++, checkFn = dirCheck;
 316
 317                         if ( !part.match(/\W/) ) {
 318                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 319                                 checkFn = dirNodeCheck;
 320                         }
 321
 322                         checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML);
 323                 },
 324                 "~": function(checkSet, part, isXML){
 325                         var doneName = done++, checkFn = dirCheck;
 326
 327                         if ( typeof part === "string" && !part.match(/\W/) ) {
 328                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 329                                 checkFn = dirNodeCheck;
 330                         }
 331
 332                         checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML);
 333                 }
 334         },
 335         find: {
 336                 ID: function(match, context, isXML){
 337                         if ( typeof context.getElementById !== "undefined" && !isXML ) {
 338                                 var m = context.getElementById(match[1]);
 339                                 return m ? [m] : [];
 340                         }
 341                 },
 342                 NAME: function(match, context, isXML){
 343                         if ( typeof context.getElementsByName !== "undefined" ) {
 344                                 var ret = [], results = context.getElementsByName(match[1]);
 345
 346                                 for ( var i = 0, l = results.length; i < l; i++ ) {
 347                                         if ( results[i].getAttribute("name") === match[1] ) {
 348                                                 ret.push( results[i] );
 349                                         }
 350                                 }
 351
 352                                 return ret.length === 0 ? null : ret;
 353                         }
 354                 },
 355                 TAG: function(match, context){
 356                         return context.getElementsByTagName(match[1]);
 357                 }
 358         },
 359         preFilter: {
 360                 CLASS: function(match, curLoop, inplace, result, not){
 361                         match = " " + match[1].replace(/\\/g, "") + " ";
 362
 363                         for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) {
 364                                 if ( elem ) {
 365                                         if ( not ^ (elem.className && (" " + elem.className + " ").indexOf(match) >= 0) ) {
 366                                                 if ( !inplace )
 367                                                         result.push( elem );
 368                                         } else if ( inplace ) {
 369                                                 curLoop[i] = false;
 370                                         }
 371                                 }
 372                         }
 373
 374                         return false;
 375                 },
 376                 ID: function(match){
 377                         return match[1].replace(/\\/g, "");
 378                 },
 379                 TAG: function(match, curLoop){
 380                         for ( var i = 0; curLoop[i] === false; i++ ){}
 381                         return curLoop[i] && isXML(curLoop[i]) ? match[1] : match[1].toUpperCase();
 382                 },
 383                 CHILD: function(match){
 384                         if ( match[1] == "nth" ) {
 385                                 // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
 386                                 var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
 387                                         match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
 388                                         !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);
 389
 390                                 // calculate the numbers (first)n+(last) including if they are negative
 391                                 match[2] = (test[1] + (test[2] || 1)) - 0;
 392                                 match[3] = test[3] - 0;
 393                         }
 394
 395                         // TODO: Move to normal caching system
 396                         match[0] = done++;
 397
 398                         return match;
 399                 },
 400                 ATTR: function(match){
 401                         var name = match[1].replace(/\\/g, "");
 402
 403                         if ( Expr.attrMap[name] ) {
 404                                 match[1] = Expr.attrMap[name];
 405                         }
 406
 407                         if ( match[2] === "~=" ) {
 408                                 match[4] = " " + match[4] + " ";
 409                         }
 410
 411                         return match;
 412                 },
 413                 PSEUDO: function(match, curLoop, inplace, result, not){
 414                         if ( match[1] === "not" ) {
 415                                 // If we're dealing with a complex expression, or a simple one
 416                                 if ( match[3].match(chunker).length > 1 || /^\w/.test(match[3]) ) {
 417                                         match[3] = Sizzle(match[3], null, null, curLoop);
 418                                 } else {
 419                                         var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
 420                                         if ( !inplace ) {
 421                                                 result.push.apply( result, ret );
 422                                         }
 423                                         return false;
 424                                 }
 425                         } else if ( Expr.match.POS.test( match[0] ) ) {
 426                                 return true;
 427                         }
 428
 429                         return match;
 430                 },
 431                 POS: function(match){
 432                         match.unshift( true );
 433                         return match;
 434                 }
 435         },
 436         filters: {
 437                 enabled: function(elem){
 438                         return elem.disabled === false && elem.type !== "hidden";
 439                 },
 440                 disabled: function(elem){
 441                         return elem.disabled === true;
 442                 },
 443                 checked: function(elem){
 444                         return elem.checked === true;
 445                 },
 446                 selected: function(elem){
 447                         // Accessing this property makes selected-by-default
 448                         // options in Safari work properly
 449                         elem.parentNode.selectedIndex;
 450                         return elem.selected === true;
 451                 },
 452                 parent: function(elem){
 453                         return !!elem.firstChild;
 454                 },
 455                 empty: function(elem){
 456                         return !elem.firstChild;
 457                 },
 458                 has: function(elem, i, match){
 459                         return !!Sizzle( match[3], elem ).length;
 460                 },
 461                 header: function(elem){
 462                         return /h\d/i.test( elem.nodeName );
 463                 },
 464                 text: function(elem){
 465                         return "text" === elem.type;
 466                 },
 467                 radio: function(elem){
 468                         return "radio" === elem.type;
 469                 },
 470                 checkbox: function(elem){
 471                         return "checkbox" === elem.type;
 472                 },
 473                 file: function(elem){
 474                         return "file" === elem.type;
 475                 },
 476                 password: function(elem){
 477                         return "password" === elem.type;
 478                 },
 479                 submit: function(elem){
 480                         return "submit" === elem.type;
 481                 },
 482                 image: function(elem){
 483                         return "image" === elem.type;
 484                 },
 485                 reset: function(elem){
 486                         return "reset" === elem.type;
 487                 },
 488                 button: function(elem){
 489                         return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
 490                 },
 491                 input: function(elem){
 492                         return /input|select|textarea|button/i.test(elem.nodeName);
 493                 }
 494         },
 495         setFilters: {
 496                 first: function(elem, i){
 497                         return i === 0;
 498                 },
 499                 last: function(elem, i, match, array){
 500                         return i === array.length - 1;
 501                 },
 502                 even: function(elem, i){
 503                         return i % 2 === 0;
 504                 },
 505                 odd: function(elem, i){
 506                         return i % 2 === 1;
 507                 },
 508                 lt: function(elem, i, match){
 509                         return i < match[3] - 0;
 510                 },
 511                 gt: function(elem, i, match){
 512                         return i > match[3] - 0;
 513                 },
 514                 nth: function(elem, i, match){
 515                         return match[3] - 0 == i;
 516                 },
 517                 eq: function(elem, i, match){
 518                         return match[3] - 0 == i;
 519                 }
 520         },
 521         filter: {
 522                 CHILD: function(elem, match){
 523                         var type = match[1], node = elem;
 524                         switch (type) {
 525                                 case 'only':
 526                                 case 'first':
 527                                         while (node = node.previousSibling)  {
 528                                                 if ( node.nodeType === 1 ) return false;
 529                                         }
 530                                         if ( type == 'first') return true;
 531                                         node = elem;
 532                                 case 'last':
 533                                         while (node = node.nextSibling)  {
 534                                                 if ( node.nodeType === 1 ) return false;
 535                                         }
 536                                         return true;
 537                                 case 'nth':
 538                                         var first = match[2], last = match[3];
 539
 540                                         if ( first == 1 && last == 0 ) {
 541                                                 return true;
 542                                         }
 543
 544                                         var doneName = match[0],
 545                                                 parent = elem.parentNode;
 546
 547                                         if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
 548                                                 var count = 0;
 549                                                 for ( node = parent.firstChild; node; node = node.nextSibling ) {
 550                                                         if ( node.nodeType === 1 ) {
 551                                                                 node.nodeIndex = ++count;
 552                                                         }
 553                                                 }
 554                                                 parent.sizcache = doneName;
 555                                         }
 556
 557                                         var diff = elem.nodeIndex - last;
 558                                         if ( first == 0 ) {
 559                                                 return diff == 0;
 560                                         } else {
 561                                                 return ( diff % first == 0 && diff / first >= 0 );
 562                                         }
 563                         }
 564                 },
 565                 PSEUDO: function(elem, match, i, array){
 566                         var name = match[1], filter = Expr.filters[ name ];
 567
 568                         if ( filter ) {
 569                                 return filter( elem, i, match, array );
 570                         } else if ( name === "contains" ) {
 571                                 return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
 572                         } else if ( name === "not" ) {
 573                                 var not = match[3];
 574
 575                                 for ( var i = 0, l = not.length; i < l; i++ ) {
 576                                         if ( not[i] === elem ) {
 577                                                 return false;
 578                                         }
 579                                 }
 580
 581                                 return true;
 582                         }
 583                 },
 584                 ID: function(elem, match){
 585                         return elem.nodeType === 1 && elem.getAttribute("id") === match;
 586                 },
 587                 TAG: function(elem, match){
 588                         return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
 589                 },
 590                 CLASS: function(elem, match){
 591                         return match.test( elem.className );
 592                 },
 593                 ATTR: function(elem, match){
 594                         var name = match[1],
 595                                 result = Expr.attrHandle[ name ] ?
 596                                         Expr.attrHandle[ name ]( elem ) :
 597                                         elem[ name ] != null ?
 598                                                 elem[ name ] :
 599                                                 elem.getAttribute( name ),
 600                                 value = result + "",
 601                                 type = match[2],
 602                                 check = match[4];
 603
 604                         return result == null ?
 605                                 type === "!=" :
 606                                 type === "=" ?
 607                                 value === check :
 608                                 type === "*=" ?
 609                                 value.indexOf(check) >= 0 :
 610                                 type === "~=" ?
 611                                 (" " + value + " ").indexOf(check) >= 0 :
 612                                 !check ?
 613                                 value && result !== false :
 614                                 type === "!=" ?
 615                                 value != check :
 616                                 type === "^=" ?
 617                                 value.indexOf(check) === 0 :
 618                                 type === "$=" ?
 619                                 value.substr(value.length - check.length) === check :
 620                                 type === "|=" ?
 621                                 value === check || value.substr(0, check.length + 1) === check + "-" :
 622                                 false;
 623                 },
 624                 POS: function(elem, match, i, array){
 625                         var name = match[2], filter = Expr.setFilters[ name ];
 626
 627                         if ( filter ) {
 628                                 return filter( elem, i, match, array );
 629                         }
 630                 }
 631         }
 632 };
 633
 634 var origPOS = Expr.match.POS;
 635
 636 for ( var type in Expr.match ) {
 637         Expr.match[ type ] = RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
 638 }
 639
 640 var makeArray = function(array, results) {
 641         array = Array.prototype.slice.call( array );
 642
 643         if ( results ) {
 644                 results.push.apply( results, array );
 645                 return results;
 646         }
 647
 648         return array;
 649 };
 650
 651 // Perform a simple check to determine if the browser is capable of
 652 // converting a NodeList to an array using builtin methods.
 653 try {
 654         Array.prototype.slice.call( document.documentElement.childNodes );
 655
 656 // Provide a fallback method if it does not work
 657 } catch(e){
 658         makeArray = function(array, results) {
 659                 var ret = results || [];
 660
 661                 if ( toString.call(array) === "[object Array]" ) {
 662                         Array.prototype.push.apply( ret, array );
 663                 } else {
 664                         if ( typeof array.length === "number" ) {
 665                                 for ( var i = 0, l = array.length; i < l; i++ ) {
 666                                         ret.push( array[i] );
 667                                 }
 668                         } else {
 669                                 for ( var i = 0; array[i]; i++ ) {
 670                                         ret.push( array[i] );
 671                                 }
 672                         }
 673                 }
 674
 675                 return ret;
 676         };
 677 }
 678
 679 var sortOrder;
 680
 681 if ( Array.prototype.indexOf ) {
 682         var indexOf = Array.prototype.indexOf,
 683                 allSort = document.getElementsByTagName("*");
 684
 685         sortOrder = function( a, b ) {
 686                 var ret = indexOf.call( allSort, a ) - indexOf.call( allSort, b );
 687                 if ( ret === 0 ) {
 688                         hasDuplicate = true;
 689                 }
 690                 return ret;
 691         };
 692 } else if ( document.documentElement.sourceIndex === 1 ) {
 693         sortOrder = function( a, b ) {
 694                 var ret = a.sourceIndex - b.sourceIndex;
 695                 if ( ret === 0 ) {
 696                         hasDuplicate = true;
 697                 }
 698                 return ret;
 699         };
 700 }
 701
 702 // Check to see if the browser returns elements by name when
 703 // querying by getElementById (and provide a workaround)
 704 (function(){
 705         // We're going to inject a fake input element with a specified name
 706         var form = document.createElement("form"),
 707                 id = "script" + (new Date).getTime();
 708         form.innerHTML = "<input name='" + id + "'/>";
 709
 710         // Inject it into the root element, check its status, and remove it quickly
 711         var root = document.documentElement;
 712         root.insertBefore( form, root.firstChild );
 713
 714         // The workaround has to do additional checks after a getElementById
 715         // Which slows things down for other browsers (hence the branching)
 716         if ( !!document.getElementById( id ) ) {
 717                 Expr.find.ID = function(match, context, isXML){
 718                         if ( typeof context.getElementById !== "undefined" && !isXML ) {
 719                                 var m = context.getElementById(match[1]);
 720                                 return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
 721                         }
 722                 };
 723
 724                 Expr.filter.ID = function(elem, match){
 725                         var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
 726                         return elem.nodeType === 1 && node && node.nodeValue === match;
 727                 };
 728         }
 729
 730         root.removeChild( form );
 731 })();
 732
 733 (function(){
 734         // Check to see if the browser returns only elements
 735         // when doing getElementsByTagName("*")
 736
 737         // Create a fake element
 738         var div = document.createElement("div");
 739         div.appendChild( document.createComment("") );
 740
 741         // Make sure no comments are found
 742         if ( div.getElementsByTagName("*").length > 0 ) {
 743                 Expr.find.TAG = function(match, context){
 744                         var results = context.getElementsByTagName(match[1]);
 745
 746                         // Filter out possible comments
 747                         if ( match[1] === "*" ) {
 748                                 var tmp = [];
 749
 750                                 for ( var i = 0; results[i]; i++ ) {
 751                                         if ( results[i].nodeType === 1 ) {
 752                                                 tmp.push( results[i] );
 753                                         }
 754                                 }
 755
 756                                 results = tmp;
 757                         }
 758
 759                         return results;
 760                 };
 761         }
 762
 763         // Check to see if an attribute returns normalized href attributes
 764         div.innerHTML = "<a href='#'></a>";
 765         if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
 766                         div.firstChild.getAttribute("href") !== "#" ) {
 767                 Expr.attrHandle.href = function(elem){
 768                         return elem.getAttribute("href", 2);
 769                 };
 770         }
 771 })();
 772
 773 if ( document.querySelectorAll ) (function(){
 774         var oldSizzle = Sizzle, div = document.createElement("div");
 775         div.innerHTML = "<p class='TEST'></p>";
 776
 777         // Safari can't handle uppercase or unicode characters when
 778         // in quirks mode.
 779         if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
 780                 return;
 781         }
 782
 783         Sizzle = function(query, context, extra, seed){
 784                 context = context || document;
 785
 786                 // Only use querySelectorAll on non-XML documents
 787                 // (ID selectors don't work in non-HTML documents)
 788                 if ( !seed && context.nodeType === 9 && !isXML(context) ) {
 789                         try {
 790                                 return makeArray( context.querySelectorAll(query), extra );
 791                         } catch(e){}
 792                 }
 793
 794                 return oldSizzle(query, context, extra, seed);
 795         };
 796
 797         Sizzle.find = oldSizzle.find;
 798         Sizzle.filter = oldSizzle.filter;
 799         Sizzle.selectors = oldSizzle.selectors;
 800         Sizzle.matches = oldSizzle.matches;
 801 })();
 802
 803 if ( document.getElementsByClassName && document.documentElement.getElementsByClassName ) (function(){
 804         var div = document.createElement("div");
 805         div.innerHTML = "<div class='test e'></div><div class='test'></div>";
 806
 807         // Opera can't find a second classname (in 9.6)
 808         if ( div.getElementsByClassName("e").length === 0 )
 809                 return;
 810
 811         // Safari caches class attributes, doesn't catch changes (in 3.2)
 812         div.lastChild.className = "e";
 813
 814         if ( div.getElementsByClassName("e").length === 1 )
 815                 return;
 816
 817         Expr.order.splice(1, 0, "CLASS");
 818         Expr.find.CLASS = function(match, context) {
 819                 return context.getElementsByClassName(match[1]);
 820         };
 821 })();
 822
 823 function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
 824         var sibDir = dir == "previousSibling" && !isXML;
 825         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 826                 var elem = checkSet[i];
 827                 if ( elem ) {
 828                         if ( sibDir && elem.nodeType === 1 ){
 829                                 elem.sizcache = doneName;
 830                                 elem.sizset = i;
 831                         }
 832                         elem = elem[dir];
 833                         var match = false;
 834
 835                         while ( elem ) {
 836                                 if ( elem.sizcache === doneName ) {
 837                                         match = checkSet[elem.sizset];
 838                                         break;
 839                                 }
 840
 841                                 if ( elem.nodeType === 1 && !isXML ){
 842                                         elem.sizcache = doneName;
 843                                         elem.sizset = i;
 844                                 }
 845
 846                                 if ( elem.nodeName === cur ) {
 847                                         match = elem;
 848                                         break;
 849                                 }
 850
 851                                 elem = elem[dir];
 852                         }
 853
 854                         checkSet[i] = match;
 855                 }
 856         }
 857 }
 858
 859 function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
 860         var sibDir = dir == "previousSibling" && !isXML;
 861         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 862                 var elem = checkSet[i];
 863                 if ( elem ) {
 864                         if ( sibDir && elem.nodeType === 1 ) {
 865                                 elem.sizcache = doneName;
 866                                 elem.sizset = i;
 867                         }
 868                         elem = elem[dir];
 869                         var match = false;
 870
 871                         while ( elem ) {
 872                                 if ( elem.sizcache === doneName ) {
 873                                         match = checkSet[elem.sizset];
 874                                         break;
 875                                 }
 876
 877                                 if ( elem.nodeType === 1 ) {
 878                                         if ( !isXML ) {
 879                                                 elem.sizcache = doneName;
 880                                                 elem.sizset = i;
 881                                         }
 882                                         if ( typeof cur !== "string" ) {
 883                                                 if ( elem === cur ) {
 884                                                         match = true;
 885                                                         break;
 886                                                 }
 887
 888                                         } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
 889                                                 match = elem;
 890                                                 break;
 891                                         }
 892                                 }
 893
 894                                 elem = elem[dir];
 895                         }
 896
 897                         checkSet[i] = match;
 898                 }
 899         }
 900 }
 901
 902 var contains = document.compareDocumentPosition ?  function(a, b){
 903         return a.compareDocumentPosition(b) & 16;
 904 } : function(a, b){
 905         return a !== b && (a.contains ? a.contains(b) : true);
 906 };
 907
 908 var isXML = function(elem){
 909         return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
 910                 !!elem.ownerDocument && isXML( elem.ownerDocument );
 911 };
 912
 913 var posProcess = function(selector, context){
 914         var tmpSet = [], later = "", match,
 915                 root = context.nodeType ? [context] : context;
 916
 917         // Position selectors must be done after the filter
 918         // And so must :not(positional) so we move all PSEUDOs to the end
 919         while ( (match = Expr.match.PSEUDO.exec( selector )) ) {
 920                 later += match[0];
 921                 selector = selector.replace( Expr.match.PSEUDO, "" );
 922         }
 923
 924         selector = Expr.relative[selector] ? selector + "*" : selector;
 925
 926         for ( var i = 0, l = root.length; i < l; i++ ) {
 927                 Sizzle( selector, root[i], tmpSet );
 928         }
 929
 930         return Sizzle.filter( later, tmpSet );
 931 };
 932
 933 // EXPOSE
 934 jQuery.find = Sizzle;
 935 jQuery.filter = Sizzle.filter;
 936 jQuery.expr = Sizzle.selectors;
 937 jQuery.expr[":"] = jQuery.expr.filters;
 938
 939 Sizzle.selectors.filters.hidden = function(elem){
 940         return elem.offsetWidth === 0 || elem.offsetHeight === 0;
 941 };
 942
 943 Sizzle.selectors.filters.visible = function(elem){
 944         return elem.offsetWidth > 0 || elem.offsetHeight > 0;
 945 };
 946
 947 Sizzle.selectors.filters.animated = function(elem){
 948         return jQuery.grep(jQuery.timers, function(fn){
 949                 return elem === fn.elem;
 950         }).length;
 951 };
 952
 953 jQuery.multiFilter = function( expr, elems, not ) {
 954         if ( not ) {
 955                 expr = ":not(" + expr + ")";
 956         }
 957
 958         return Sizzle.matches(expr, elems);
 959 };
 960
 961 jQuery.dir = function( elem, dir ){
 962         var matched = [], cur = elem[dir];
 963         while ( cur && cur != document ) {
 964                 if ( cur.nodeType == 1 )
 965                         matched.push( cur );
 966                 cur = cur[dir];
 967         }
 968         return matched;
 969 };
 970
 971 jQuery.nth = function(cur, result, dir, elem){
 972         result = result || 1;
 973         var num = 0;
 974
 975         for ( ; cur; cur = cur[dir] )
 976                 if ( cur.nodeType == 1 && ++num == result )
 977                         break;
 978
 979         return cur;
 980 };
 981
 982 jQuery.sibling = function(n, elem){
 983         var r = [];
 984
 985         for ( ; n; n = n.nextSibling ) {
 986                 if ( n.nodeType == 1 && n != elem )
 987                         r.push( n );
 988         }
 989
 990         return r;
 991 };
 992
 993 return;
 994
 995 window.Sizzle = Sizzle;
 996
 997 })();