sizzle.js

/*!
 * Sizzle CSS Selector Engine
 * Copyright 2012 jQuery Foundation and other contributors
 * Released under the MIT license
 * http://sizzlejs.com/
 */
(function( window, undefined ) {

var cachedruns,
	assertGetIdNotName,
	Expr,
	getText,
	isXML,
	contains,
	compile,
	sortOrder,
	hasDuplicate,
	outermostContext,

	baseHasDuplicate = true,
	strundefined = "undefined",

	expando = ( "sizcache" + Math.random() ).replace( ".", "" ),

	Token = String,
	document = window.document,
	docElem = document.documentElement,
	dirruns = 0,
	done = 0,
	pop = [].pop,
	push = [].push,
	slice = [].slice,
	// Use a stripped-down indexOf if a native one is unavailable
	indexOf = [].indexOf || function( elem ) {
		var i = 0,
			len = this.length;
		for ( ; i < len; i++ ) {
			if ( this[i] === elem ) {
				return i;
			}
		}
		return -1;
	},

	// Augment a function for special use by Sizzle
	markFunction = function( fn, value ) {
		fn[ expando ] = value == null || value;
		return fn;
	},

	createCache = function() {
		var cache = {},
			keys = [];

		return markFunction(function( key, value ) {
			// Only keep the most recent entries
			if ( keys.push( key ) > Expr.cacheLength ) {
				delete cache[ keys.shift() ];
			}

			// Retrieve with (key + " ") to avoid collision with native Object.prototype properties (see Issue #157)
			return (cache[ key + " " ] = value);
		}, cache );
	},

	classCache = createCache(),
	tokenCache = createCache(),
	compilerCache = createCache(),

	// Regex

	// Whitespace characters http://www.w3.org/TR/css3-selectors/#whitespace
	whitespace = "[\\x20\\t\\r\\n\\f]",
	// http://www.w3.org/TR/css3-syntax/#characters
	characterEncoding = "(?:\\\\.|[-\\w]|[^\\x00-\\xa0])+",

	// Loosely modeled on CSS identifier characters
	// An unquoted value should be a CSS identifier (http://www.w3.org/TR/css3-selectors/#attribute-selectors)
	// Proper syntax: http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
	identifier = characterEncoding.replace( "w", "w#" ),

	// Acceptable operators http://www.w3.org/TR/selectors/#attribute-selectors
	operators = "([*^$|!~]?=)",
	attributes = "\\[" + whitespace + "*(" + characterEncoding + ")" + whitespace +
		"*(?:" + operators + whitespace + "*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|(" + identifier + ")|)|)" + whitespace + "*\\]",

	// Prefer arguments not in parens/brackets,
	//   then attribute selectors and non-pseudos (denoted by :),
	//   then anything else
	// These preferences are here to reduce the number of selectors
	//   needing tokenize in the PSEUDO preFilter
	pseudos = ":(" + characterEncoding + ")(?:\\((?:(['\"])((?:\\\\.|[^\\\\])*?)\\2|([^()[\\]]*|(?:(?:" + attributes + ")|[^:]|\\\\.)*|.*))\\)|)",

	// For matchExpr.POS and matchExpr.needsContext
	pos = ":(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace +
		"*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)",

	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),

	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
	rcombinators = new RegExp( "^" + whitespace + "*([\\x20\\t\\r\\n\\f>+~])" + whitespace + "*" ),
	rpseudo = new RegExp( pseudos ),

	// Easily-parseable/retrievable ID or TAG or CLASS selectors
	rquickExpr = /^(?:#([\w\-]+)|(\w+)|\.([\w\-]+))$/,

	rnot = /^:not/,
	rsibling = /[\x20\t\r\n\f]*[+~]/,
	rendsWithNot = /:not\($/,

	rheader = /h\d/i,
	rinputs = /input|select|textarea|button/i,

	rbackslash = /\\(?!\\)/g,

	matchExpr = {
		"ID": new RegExp( "^#(" + characterEncoding + ")" ),
		"CLASS": new RegExp( "^\\.(" + characterEncoding + ")" ),
		"NAME": new RegExp( "^\\[name=['\"]?(" + characterEncoding + ")['\"]?\\]" ),
		"TAG": new RegExp( "^(" + characterEncoding.replace( "w", "w*" ) + ")" ),
		"ATTR": new RegExp( "^" + attributes ),
		"PSEUDO": new RegExp( "^" + pseudos ),
		"POS": new RegExp( pos, "i" ),
		"CHILD": new RegExp( "^:(only|nth|first|last)-child(?:\\(" + whitespace +
			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
		// For use in libraries implementing .is()
		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|" + pos, "i" )
	},

	// Support

	// Used for testing something on an element
	assert = function( fn ) {
		var div = document.createElement("div");

		try {
			return fn( div );
		} catch (e) {
			return false;
		} finally {
			// release memory in IE
			div = null;
		}
	},

	// Check if getElementsByTagName("*") returns only elements
	assertTagNameNoComments = assert(function( div ) {
		div.appendChild( document.createComment("") );
		return !div.getElementsByTagName("*").length;
	}),

	// Check if getAttribute returns normalized href attributes
	assertHrefNotNormalized = assert(function( div ) {
		div.innerHTML = "<a href='#'></a>";
		return div.firstChild && typeof div.firstChild.getAttribute !== strundefined &&
			div.firstChild.getAttribute("href") === "#";
	}),

	// Check if attributes should be retrieved by attribute nodes
	assertAttributes = assert(function( div ) {
		div.innerHTML = "<select></select>";
		var type = typeof div.lastChild.getAttribute("multiple");
		// IE8 returns a string for some attributes even when not present
		return type !== "boolean" && type !== "string";
	}),

	// Check if getElementsByClassName can be trusted
	assertUsableClassName = assert(function( div ) {
		// Opera can't find a second classname (in 9.6)
		div.innerHTML = "<div class='hidden e'></div><div class='hidden'></div>";
		if ( !div.getElementsByClassName || !div.getElementsByClassName("e").length ) {
			return false;
		}

		// Safari 3.2 caches class attributes and doesn't catch changes
		div.lastChild.className = "e";
		return div.getElementsByClassName("e").length === 2;
	}),

	// Check if getElementById returns elements by name
	// Check if getElementsByName privileges form controls or returns elements by ID
	assertUsableName = assert(function( div ) {
		// Inject content
		div.id = expando + 0;
		div.innerHTML = "<a name='" + expando + "'></a><div name='" + expando + "'></div>";
		docElem.insertBefore( div, docElem.firstChild );

		// Test
		var pass = document.getElementsByName &&
			// buggy browsers will return fewer than the correct 2
			document.getElementsByName( expando ).length === 2 +
			// buggy browsers will return more than the correct 0
			document.getElementsByName( expando + 0 ).length;
		assertGetIdNotName = !document.getElementById( expando );

		// Cleanup
		docElem.removeChild( div );

		return pass;
	});

// If slice is not available, provide a backup
try {
	slice.call( docElem.childNodes, 0 )[0].nodeType;
} catch ( e ) {
	slice = function( i ) {
		var elem,
			results = [];
		for ( ; (elem = this[i]); i++ ) {
			results.push( elem );
		}
		return results;
	};
}

function Sizzle( selector, context, results, seed ) {
	results = results || [];
	context = context || document;
	var match, elem, xml, m,
		nodeType = context.nodeType;

	if ( !selector || typeof selector !== "string" ) {
		return results;
	}

	if ( nodeType !== 1 && nodeType !== 9 ) {
		return [];
	}

	xml = isXML( context );

	if ( !xml && !seed ) {
		if ( (match = rquickExpr.exec( selector )) ) {
			// Speed-up: Sizzle("#ID")
			if ( (m = match[1]) ) {
				if ( nodeType === 9 ) {
					elem = context.getElementById( m );
					// Check parentNode to catch when Blackberry 4.6 returns
					// nodes that are no longer in the document #6963
					if ( elem && elem.parentNode ) {
						// Handle the case where IE, Opera, and Webkit return items
						// by name instead of ID
						if ( elem.id === m ) {
							results.push( elem );
							return results;
						}
					} else {
						return results;
					}
				} else {
					// Context is not a document
					if ( context.ownerDocument && (elem = context.ownerDocument.getElementById( m )) &&
						contains( context, elem ) && elem.id === m ) {
						results.push( elem );
						return results;
					}
				}

			// Speed-up: Sizzle("TAG")
			} else if ( match[2] ) {
				push.apply( results, slice.call(context.getElementsByTagName( selector ), 0) );
				return results;

			// Speed-up: Sizzle(".CLASS")
			} else if ( (m = match[3]) && assertUsableClassName && context.getElementsByClassName ) {
				push.apply( results, slice.call(context.getElementsByClassName( m ), 0) );
				return results;
			}
		}
	}

	// All others
	return select( selector.replace( rtrim, "$1" ), context, results, seed, xml );
}

Sizzle.matches = function( expr, elements ) {
	return Sizzle( expr, null, null, elements );
};

Sizzle.matchesSelector = function( elem, expr ) {
	return Sizzle( expr, null, null, [ elem ] ).length > 0;
};

// Returns a function to use in pseudos for input types
function createInputPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return name === "input" && elem.type === type;
	};
}

// Returns a function to use in pseudos for buttons
function createButtonPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return (name === "input" || name === "button") && elem.type === type;
	};
}

// Returns a function to use in pseudos for positionals
function createPositionalPseudo( fn ) {
	return markFunction(function( argument ) {
		argument = +argument;
		return markFunction(function( seed, matches ) {
			var j,
				matchIndexes = fn( [], seed.length, argument ),
				i = matchIndexes.length;

			// Match elements found at the specified indexes
			while ( i-- ) {
				if ( seed[ (j = matchIndexes[i]) ] ) {
					seed[j] = !(matches[j] = seed[j]);
				}
			}
		});
	});
}

/**
 * Utility function for retrieving the text value of an array of DOM nodes
 * @param {Array|Element} elem
 */
getText = Sizzle.getText = function( elem ) {
	var node,
		ret = "",
		i = 0,
		nodeType = elem.nodeType;

	if ( nodeType ) {
		if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
			// Use textContent for elements
			// innerText usage removed for consistency of new lines (see #11153)
			if ( typeof elem.textContent === "string" ) {
				return elem.textContent;
			} else {
				// Traverse its children
				for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
					ret += getText( elem );
				}
			}
		} else if ( nodeType === 3 || nodeType === 4 ) {
			return elem.nodeValue;
		}
		// Do not include comment or processing instruction nodes
	} else {

		// If no nodeType, this is expected to be an array
		for ( ; (node = elem[i]); i++ ) {
			// Do not traverse comment nodes
			ret += getText( node );
		}
	}
	return ret;
};

isXML = Sizzle.isXML = function( elem ) {
	// documentElement is verified for cases where it doesn't yet exist
	// (such as loading iframes in IE - #4833)
	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
	return documentElement ? documentElement.nodeName !== "HTML" : false;
};

// Element contains another
contains = Sizzle.contains = docElem.contains ?
	function( a, b ) {
		var adown = a.nodeType === 9 ? a.documentElement : a,
			bup = b && b.parentNode;
		return a === bup || !!( bup && bup.nodeType === 1 && adown.contains && adown.contains(bup) );
	} :
	docElem.compareDocumentPosition ?
	function( a, b ) {
		return b && !!( a.compareDocumentPosition( b ) & 16 );
	} :
	function( a, b ) {
		while ( (b = b.parentNode) ) {
			if ( b === a ) {
				return true;
			}
		}
		return false;
	};

Sizzle.attr = function( elem, name ) {
	var val,
		xml = isXML( elem );

	if ( !xml ) {
		name = name.toLowerCase();
	}
	if ( (val = Expr.attrHandle[ name ]) ) {
		return val( elem );
	}
	if ( xml || assertAttributes ) {
		return elem.getAttribute( name );
	}
	val = elem.getAttributeNode( name );
	return val ?
		typeof elem[ name ] === "boolean" ?
			elem[ name ] ? name : null :
			val.specified ? val.value : null :
		null;
};

Expr = Sizzle.selectors = {

	// Can be adjusted by the user
	cacheLength: 50,

	createPseudo: markFunction,

	match: matchExpr,

	// IE6/7 return a modified href
	attrHandle: assertHrefNotNormalized ?
		{} :
		{
			"href": function( elem ) {
				return elem.getAttribute( "href", 2 );
			},
			"type": function( elem ) {
				return elem.getAttribute("type");
			}
		},

	find: {
		"ID": assertGetIdNotName ?
			function( id, context, xml ) {
				if ( typeof context.getElementById !== strundefined && !xml ) {
					var m = context.getElementById( id );
					// Check parentNode to catch when Blackberry 4.6 returns
					// nodes that are no longer in the document #6963
					return m && m.parentNode ? [m] : [];
				}
			} :
			function( id, context, xml ) {
				if ( typeof context.getElementById !== strundefined && !xml ) {
					var m = context.getElementById( id );

					return m ?
						m.id === id || typeof m.getAttributeNode !== strundefined && m.getAttributeNode("id").value === id ?
							[m] :
							undefined :
						[];
				}
			},

		"TAG": assertTagNameNoComments ?
			function( tag, context ) {
				if ( typeof context.getElementsByTagName !== strundefined ) {
					return context.getElementsByTagName( tag );
				}
			} :
			function( tag, context ) {
				var results = context.getElementsByTagName( tag );

				// Filter out possible comments
				if ( tag === "*" ) {
					var elem,
						tmp = [],
						i = 0;

					for ( ; (elem = results[i]); i++ ) {
						if ( elem.nodeType === 1 ) {
							tmp.push( elem );
						}
					}

					return tmp;
				}
				return results;
			},

		"NAME": assertUsableName && function( tag, context ) {
			if ( typeof context.getElementsByName !== strundefined ) {
				return context.getElementsByName( name );
			}
		},

		"CLASS": assertUsableClassName && function( className, context, xml ) {
			if ( typeof context.getElementsByClassName !== strundefined && !xml ) {
				return context.getElementsByClassName( className );
			}
		}
	},

	relative: {
		">": { dir: "parentNode", first: true },
		" ": { dir: "parentNode" },
		"+": { dir: "previousSibling", first: true },
		"~": { dir: "previousSibling" }
	},

	preFilter: {
		"ATTR": function( match ) {
			match[1] = match[1].replace( rbackslash, "" );

			// Move the given value to match[3] whether quoted or unquoted
			match[3] = ( match[4] || match[5] || "" ).replace( rbackslash, "" );

			if ( match[2] === "~=" ) {
				match[3] = " " + match[3] + " ";
			}

			return match.slice( 0, 4 );
		},

		"CHILD": function( match ) {
			/* matches from matchExpr["CHILD"]
				1 type (only|nth|...)
				2 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
				3 xn-component of xn+y argument ([+-]?\d*n|)
				4 sign of xn-component
				5 x of xn-component
				6 sign of y-component
				7 y of y-component
			*/
			match[1] = match[1].toLowerCase();

			if ( match[1] === "nth" ) {
				// nth-child requires argument
				if ( !match[2] ) {
					Sizzle.error( match[0] );
				}

				// numeric x and y parameters for Expr.filter.CHILD
				// remember that false/true cast respectively to 0/1
				match[3] = +( match[3] ? match[4] + (match[5] || 1) : 2 * ( match[2] === "even" || match[2] === "odd" ) );
				match[4] = +( ( match[6] + match[7] ) || match[2] === "odd" );

			// other types prohibit arguments
			} else if ( match[2] ) {
				Sizzle.error( match[0] );
			}

			return match;
		},

		"PSEUDO": function( match ) {
			var unquoted, excess;
			if ( matchExpr["CHILD"].test( match[0] ) ) {
				return null;
			}

			if ( match[3] ) {
				match[2] = match[3];
			} else if ( (unquoted = match[4]) ) {
				// Only check arguments that contain a pseudo
				if ( rpseudo.test(unquoted) &&
					// Get excess from tokenize (recursively)
					(excess = tokenize( unquoted, true )) &&
					// advance to the next closing parenthesis
					(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {

					// excess is a negative index
					unquoted = unquoted.slice( 0, excess );
					match[0] = match[0].slice( 0, excess );
				}
				match[2] = unquoted;
			}

			// Return only captures needed by the pseudo filter method (type and argument)
			return match.slice( 0, 3 );
		}
	},

	filter: {
		"ID": assertGetIdNotName ?
			function( id ) {
				id = id.replace( rbackslash, "" );
				return function( elem ) {
					return elem.getAttribute("id") === id;
				};
			} :
			function( id ) {
				id = id.replace( rbackslash, "" );
				return function( elem ) {
					var node = typeof elem.getAttributeNode !== strundefined && elem.getAttributeNode("id");
					return node && node.value === id;
				};
			},

		"TAG": function( nodeName ) {
			if ( nodeName === "*" ) {
				return function() { return true; };
			}
			nodeName = nodeName.replace( rbackslash, "" ).toLowerCase();

			return function( elem ) {
				return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
			};
		},

		"CLASS": function( className ) {
			var pattern = classCache[ expando ][ className + " " ];

			return pattern ||
				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
				classCache( className, function( elem ) {
					return pattern.test( elem.className || (typeof elem.getAttribute !== strundefined && elem.getAttribute("class")) || "" );
				});
		},

		"ATTR": function( name, operator, check ) {
			return function( elem, context ) {
				var result = Sizzle.attr( elem, name );

				if ( result == null ) {
					return operator === "!=";
				}
				if ( !operator ) {
					return true;
				}

				result += "";

				return operator === "=" ? result === check :
					operator === "!=" ? result !== check :
					operator === "^=" ? check && result.indexOf( check ) === 0 :
					operator === "*=" ? check && result.indexOf( check ) > -1 :
					operator === "$=" ? check && result.substr( result.length - check.length ) === check :
					operator === "~=" ? ( " " + result + " " ).indexOf( check ) > -1 :
					operator === "|=" ? result === check || result.substr( 0, check.length + 1 ) === check + "-" :
					false;
			};
		},

		"CHILD": function( type, argument, first, last ) {

			if ( type === "nth" ) {
				return function( elem ) {
					var node, diff,
						parent = elem.parentNode;

					if ( first === 1 && last === 0 ) {
						return true;
					}

					if ( parent ) {
						diff = 0;
						for ( node = parent.firstChild; node; node = node.nextSibling ) {
							if ( node.nodeType === 1 ) {
								diff++;
								if ( elem === node ) {
									break;
								}
							}
						}
					}

					// Incorporate the offset (or cast to NaN), then check against cycle size
					diff -= last;
					return diff === first || ( diff % first === 0 && diff / first >= 0 );
				};
			}

			return function( elem ) {
				var node = elem;

				switch ( type ) {
					case "only":
					case "first":
						while ( (node = node.previousSibling) ) {
							if ( node.nodeType === 1 ) {
								return false;
							}
						}

						if ( type === "first" ) {
							return true;
						}

						node = elem;

						/* falls through */
					case "last":
						while ( (node = node.nextSibling) ) {
							if ( node.nodeType === 1 ) {
								return false;
							}
						}

						return true;
				}
			};
		},

		"PSEUDO": function( pseudo, argument ) {
			// pseudo-class names are case-insensitive
			// http://www.w3.org/TR/selectors/#pseudo-classes
			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
			// Remember that setFilters inherits from pseudos
			var args,
				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
					Sizzle.error( "unsupported pseudo: " + pseudo );

			// The user may use createPseudo to indicate that
			// arguments are needed to create the filter function
			// just as Sizzle does
			if ( fn[ expando ] ) {
				return fn( argument );
			}

			// But maintain support for old signatures
			if ( fn.length > 1 ) {
				args = [ pseudo, pseudo, "", argument ];
				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
					markFunction(function( seed, matches ) {
						var idx,
							matched = fn( seed, argument ),
							i = matched.length;
						while ( i-- ) {
							idx = indexOf.call( seed, matched[i] );
							seed[ idx ] = !( matches[ idx ] = matched[i] );
						}
					}) :
					function( elem ) {
						return fn( elem, 0, args );
					};
			}

			return fn;
		}
	},

	pseudos: {
		"not": markFunction(function( selector ) {
			// Trim the selector passed to compile
			// to avoid treating leading and trailing
			// spaces as combinators
			var input = [],
				results = [],
				matcher = compile( selector.replace( rtrim, "$1" ) );

			return matcher[ expando ] ?
				markFunction(function( seed, matches, context, xml ) {
					var elem,
						unmatched = matcher( seed, null, xml, [] ),
						i = seed.length;

					// Match elements unmatched by `matcher`
					while ( i-- ) {
						if ( (elem = unmatched[i]) ) {
							seed[i] = !(matches[i] = elem);
						}
					}
				}) :
				function( elem, context, xml ) {
					input[0] = elem;
					matcher( input, null, xml, results );
					return !results.pop();
				};
		}),

		"has": markFunction(function( selector ) {
			return function( elem ) {
				return Sizzle( selector, elem ).length > 0;
			};
		}),

		"contains": markFunction(function( text ) {
			return function( elem ) {
				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
			};
		}),

		"enabled": function( elem ) {
			return elem.disabled === false;
		},

		"disabled": function( elem ) {
			return elem.disabled === true;
		},

		"checked": function( elem ) {
			// In CSS3, :checked should return both checked and selected elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			var nodeName = elem.nodeName.toLowerCase();
			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
		},

		"selected": function( elem ) {
			// Accessing this property makes selected-by-default
			// options in Safari work properly
			if ( elem.parentNode ) {
				elem.parentNode.selectedIndex;
			}

			return elem.selected === true;
		},

		"parent": function( elem ) {
			return !Expr.pseudos["empty"]( elem );
		},

		"empty": function( elem ) {
			// http://www.w3.org/TR/selectors/#empty-pseudo
			// :empty is only affected by element nodes and content nodes(including text(3), cdata(4)),
			//   not comment, processing instructions, or others
			// Thanks to Diego Perini for the nodeName shortcut
			//   Greater than "@" means alpha characters (specifically not starting with "#" or "?")
			var nodeType;
			elem = elem.firstChild;
			while ( elem ) {
				if ( elem.nodeName > "@" || (nodeType = elem.nodeType) === 3 || nodeType === 4 ) {
					return false;
				}
				elem = elem.nextSibling;
			}
			return true;
		},

		"header": function( elem ) {
			return rheader.test( elem.nodeName );
		},

		"text": function( elem ) {
			var type, attr;
			// IE6 and 7 will map elem.type to 'text' for new HTML5 types (search, etc)
			// use getAttribute instead to test this case
			return elem.nodeName.toLowerCase() === "input" &&
				(type = elem.type) === "text" &&
				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === type );
		},

		// Input types
		"radio": createInputPseudo("radio"),
		"checkbox": createInputPseudo("checkbox"),
		"file": createInputPseudo("file"),
		"password": createInputPseudo("password"),
		"image": createInputPseudo("image"),

		"submit": createButtonPseudo("submit"),
		"reset": createButtonPseudo("reset"),

		"button": function( elem ) {
			var name = elem.nodeName.toLowerCase();
			return name === "input" && elem.type === "button" || name === "button";
		},

		"input": function( elem ) {
			return rinputs.test( elem.nodeName );
		},

		"focus": function( elem ) {
			var doc = elem.ownerDocument;
			return elem === doc.activeElement && (!doc.hasFocus || doc.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
		},

		"active": function( elem ) {
			return elem === elem.ownerDocument.activeElement;
		},

		// Positional types
		"first": createPositionalPseudo(function() {
			return [ 0 ];
		}),

		"last": createPositionalPseudo(function( matchIndexes, length ) {
			return [ length - 1 ];
		}),

		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
			return [ argument < 0 ? argument + length : argument ];
		}),

		"even": createPositionalPseudo(function( matchIndexes, length ) {
			for ( var i = 0; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"odd": createPositionalPseudo(function( matchIndexes, length ) {
			for ( var i = 1; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			for ( var i = argument < 0 ? argument + length : argument; --i >= 0; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			for ( var i = argument < 0 ? argument + length : argument; ++i < length; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		})
	}
};

function siblingCheck( a, b, ret ) {
	if ( a === b ) {
		return ret;
	}

	var cur = a.nextSibling;

	while ( cur ) {
		if ( cur === b ) {
			return -1;
		}

		cur = cur.nextSibling;
	}

	return 1;
}

sortOrder = docElem.compareDocumentPosition ?
	function( a, b ) {
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		return ( !a.compareDocumentPosition || !b.compareDocumentPosition ?
			a.compareDocumentPosition :
			a.compareDocumentPosition(b) & 4
		) ? -1 : 1;
	} :
	function( a, b ) {
		// The nodes are identical, we can exit early
		if ( a === b ) {
			hasDuplicate = true;
			return 0;

		// Fallback to using sourceIndex (in IE) if it's available on both nodes
		} else if ( a.sourceIndex && b.sourceIndex ) {
			return a.sourceIndex - b.sourceIndex;
		}

		var al, bl,
			ap = [],
			bp = [],
			aup = a.parentNode,
			bup = b.parentNode,
			cur = aup;

		// If the nodes are siblings (or identical) we can do a quick check
		if ( aup === bup ) {
			return siblingCheck( a, b );

		// If no parents were found then the nodes are disconnected
		} else if ( !aup ) {
			return -1;

		} else if ( !bup ) {
			return 1;
		}

		// Otherwise they're somewhere else in the tree so we need
		// to build up a full list of the parentNodes for comparison
		while ( cur ) {
			ap.unshift( cur );
			cur = cur.parentNode;
		}

		cur = bup;

		while ( cur ) {
			bp.unshift( cur );
			cur = cur.parentNode;
		}

		al = ap.length;
		bl = bp.length;

		// Start walking down the tree looking for a discrepancy
		for ( var i = 0; i < al && i < bl; i++ ) {
			if ( ap[i] !== bp[i] ) {
				return siblingCheck( ap[i], bp[i] );
			}
		}

		// We ended someplace up the tree so do a sibling check
		return i === al ?
			siblingCheck( a, bp[i], -1 ) :
			siblingCheck( ap[i], b, 1 );
	};

// Always assume the presence of duplicates if sort doesn't
// pass them to our comparison function (as in Google Chrome).
[0, 0].sort( sortOrder );
baseHasDuplicate = !hasDuplicate;

// Document sorting and removing duplicates
Sizzle.uniqueSort = function( results ) {
	var elem,
		duplicates = [],
		i = 1,
		j = 0;

	hasDuplicate = baseHasDuplicate;
	results.sort( sortOrder );

	if ( hasDuplicate ) {
		for ( ; (elem = results[i]); i++ ) {
			if ( elem === results[ i - 1 ] ) {
				j = duplicates.push( i );
			}
		}
		while ( j-- ) {
			results.splice( duplicates[ j ], 1 );
		}
	}

	return results;
};

Sizzle.error = function( msg ) {
	throw new Error( "Syntax error, unrecognized expression: " + msg );
};

function tokenize( selector, parseOnly ) {
	var matched, match, tokens, type,
		soFar, groups, preFilters,
		cached = tokenCache[ expando ][ selector + " " ];

	if ( cached ) {
		return parseOnly ? 0 : cached.slice( 0 );
	}

	soFar = selector;
	groups = [];
	preFilters = Expr.preFilter;

	while ( soFar ) {

		// Comma and first run
		if ( !matched || (match = rcomma.exec( soFar )) ) {
			if ( match ) {
				// Don't consume trailing commas as valid
				soFar = soFar.slice( match[0].length ) || soFar;
			}
			groups.push( tokens = [] );
		}

		matched = false;

		// Combinators
		if ( (match = rcombinators.exec( soFar )) ) {
			tokens.push( matched = new Token( match.shift() ) );
			soFar = soFar.slice( matched.length );

			// Cast descendant combinators to space
			matched.type = match[0].replace( rtrim, " " );
		}

		// Filters
		for ( type in Expr.filter ) {
			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
				(match = preFilters[ type ]( match ))) ) {

				tokens.push( matched = new Token( match.shift() ) );
				soFar = soFar.slice( matched.length );
				matched.type = type;
				matched.matches = match;
			}
		}

		if ( !matched ) {
			break;
		}
	}

	// Return the length of the invalid excess
	// if we're just parsing
	// Otherwise, throw an error or return tokens
	return parseOnly ?
		soFar.length :
		soFar ?
			Sizzle.error( selector ) :
			// Cache the tokens
			tokenCache( selector, groups ).slice( 0 );
}

function addCombinator( matcher, combinator, base ) {
	var dir = combinator.dir,
		checkNonElements = base && combinator.dir === "parentNode",
		doneName = done++;

	return combinator.first ?
		// Check against closest ancestor/preceding element
		function( elem, context, xml ) {
			while ( (elem = elem[ dir ]) ) {
				if ( checkNonElements || elem.nodeType === 1  ) {
					return matcher( elem, context, xml );
				}
			}
		} :

		// Check against all ancestor/preceding elements
		function( elem, context, xml ) {
			// We can't set arbitrary data on XML nodes, so they don't benefit from dir caching
			if ( !xml ) {
				var cache,
					dirkey = dirruns + " " + doneName + " ",
					cachedkey = dirkey + cachedruns;
				while ( (elem = elem[ dir ]) ) {
					if ( checkNonElements || elem.nodeType === 1 ) {
						if ( (cache = elem[ expando ]) === cachedkey ) {
							return elem.sizset;
						} else if ( typeof cache === "string" && cache.indexOf(dirkey) === 0 ) {
							if ( elem.sizset ) {
								return elem;
							}
						} else {
							elem[ expando ] = cachedkey;
							if ( matcher( elem, context, xml ) ) {
								elem.sizset = true;
								return elem;
							}
							elem.sizset = false;
						}
					}
				}
			} else {
				while ( (elem = elem[ dir ]) ) {
					if ( checkNonElements || elem.nodeType === 1 ) {
						if ( matcher( elem, context, xml ) ) {
							return elem;
						}
					}
				}
			}
		};
}

function elementMatcher( matchers ) {
	return matchers.length > 1 ?
		function( elem, context, xml ) {
			var i = matchers.length;
			while ( i-- ) {
				if ( !matchers[i]( elem, context, xml ) ) {
					return false;
				}
			}
			return true;
		} :
		matchers[0];
}

function condense( unmatched, map, filter, context, xml ) {
	var elem,
		newUnmatched = [],
		i = 0,
		len = unmatched.length,
		mapped = map != null;

	for ( ; i < len; i++ ) {
		if ( (elem = unmatched[i]) ) {
			if ( !filter || filter( elem, context, xml ) ) {
				newUnmatched.push( elem );
				if ( mapped ) {
					map.push( i );
				}
			}
		}
	}

	return newUnmatched;
}

function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
	if ( postFilter && !postFilter[ expando ] ) {
		postFilter = setMatcher( postFilter );
	}
	if ( postFinder && !postFinder[ expando ] ) {
		postFinder = setMatcher( postFinder, postSelector );
	}
	return markFunction(function( seed, results, context, xml ) {
		var temp, i, elem,
			preMap = [],
			postMap = [],
			preexisting = results.length,

			// Get initial elements from seed or context
			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),

			// Prefilter to get matcher input, preserving a map for seed-results synchronization
			matcherIn = preFilter && ( seed || !selector ) ?
				condense( elems, preMap, preFilter, context, xml ) :
				elems,

			matcherOut = matcher ?
				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?

					// ...intermediate processing is necessary
					[] :

					// ...otherwise use results directly
					results :
				matcherIn;

		// Find primary matches
		if ( matcher ) {
			matcher( matcherIn, matcherOut, context, xml );
		}

		// Apply postFilter
		if ( postFilter ) {
			temp = condense( matcherOut, postMap );
			postFilter( temp, [], context, xml );

			// Un-match failing elements by moving them back to matcherIn
			i = temp.length;
			while ( i-- ) {
				if ( (elem = temp[i]) ) {
					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
				}
			}
		}

		if ( seed ) {
			if ( postFinder || preFilter ) {
				if ( postFinder ) {
					// Get the final matcherOut by condensing this intermediate into postFinder contexts
					temp = [];
					i = matcherOut.length;
					while ( i-- ) {
						if ( (elem = matcherOut[i]) ) {
							// Restore matcherIn since elem is not yet a final match
							temp.push( (matcherIn[i] = elem) );
						}
					}
					postFinder( null, (matcherOut = []), temp, xml );
				}

				// Move matched elements from seed to results to keep them synchronized
				i = matcherOut.length;
				while ( i-- ) {
					if ( (elem = matcherOut[i]) &&
						(temp = postFinder ? indexOf.call( seed, elem ) : preMap[i]) > -1 ) {

						seed[temp] = !(results[temp] = elem);
					}
				}
			}

		// Add elements to results, through postFinder if defined
		} else {
			matcherOut = condense(
				matcherOut === results ?
					matcherOut.splice( preexisting, matcherOut.length ) :
					matcherOut
			);
			if ( postFinder ) {
				postFinder( null, results, matcherOut, xml );
			} else {
				push.apply( results, matcherOut );
			}
		}
	});
}

function matcherFromTokens( tokens ) {
	var checkContext, matcher, j,
		len = tokens.length,
		leadingRelative = Expr.relative[ tokens[0].type ],
		implicitRelative = leadingRelative || Expr.relative[" "],
		i = leadingRelative ? 1 : 0,

		// The foundational matcher ensures that elements are reachable from top-level context(s)
		matchContext = addCombinator( function( elem ) {
			return elem === checkContext;
		}, implicitRelative, true ),
		matchAnyContext = addCombinator( function( elem ) {
			return indexOf.call( checkContext, elem ) > -1;
		}, implicitRelative, true ),
		matchers = [ function( elem, context, xml ) {
			return ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
				(checkContext = context).nodeType ?
					matchContext( elem, context, xml ) :
					matchAnyContext( elem, context, xml ) );
		} ];

	for ( ; i < len; i++ ) {
		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
			matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ];
		} else {
			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );

			// Return special upon seeing a positional matcher
			if ( matcher[ expando ] ) {
				// Find the next relative operator (if any) for proper handling
				j = ++i;
				for ( ; j < len; j++ ) {
					if ( Expr.relative[ tokens[j].type ] ) {
						break;
					}
				}
				return setMatcher(
					i > 1 && elementMatcher( matchers ),
					i > 1 && tokens.slice( 0, i - 1 ).join("").replace( rtrim, "$1" ),
					matcher,
					i < j && matcherFromTokens( tokens.slice( i, j ) ),
					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
					j < len && tokens.join("")
				);
			}
			matchers.push( matcher );
		}
	}

	return elementMatcher( matchers );
}

function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
	var bySet = setMatchers.length > 0,
		byElement = elementMatchers.length > 0,
		superMatcher = function( seed, context, xml, results, expandContext ) {
			var elem, j, matcher,
				setMatched = [],
				matchedCount = 0,
				i = "0",
				unmatched = seed && [],
				outermost = expandContext != null,
				contextBackup = outermostContext,
				// We must always have either seed elements or context
				elems = seed || byElement && Expr.find["TAG"]( "*", expandContext && context.parentNode || context ),
				// Nested matchers should use non-integer dirruns
				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.E);

			if ( outermost ) {
				outermostContext = context !== document && context;
				cachedruns = superMatcher.el;
			}

			// Add elements passing elementMatchers directly to results
			for ( ; (elem = elems[i]) != null; i++ ) {
				if ( byElement && elem ) {
					for ( j = 0; (matcher = elementMatchers[j]); j++ ) {
						if ( matcher( elem, context, xml ) ) {
							results.push( elem );
							break;
						}
					}
					if ( outermost ) {
						dirruns = dirrunsUnique;
						cachedruns = ++superMatcher.el;
					}
				}

				// Track unmatched elements for set filters
				if ( bySet ) {
					// They will have gone through all possible matchers
					if ( (elem = !matcher && elem) ) {
						matchedCount--;
					}

					// Lengthen the array for every element, matched or not
					if ( seed ) {
						unmatched.push( elem );
					}
				}
			}

			// Apply set filters to unmatched elements
			matchedCount += i;
			if ( bySet && i !== matchedCount ) {
				for ( j = 0; (matcher = setMatchers[j]); j++ ) {
					matcher( unmatched, setMatched, context, xml );
				}

				if ( seed ) {
					// Reintegrate element matches to eliminate the need for sorting
					if ( matchedCount > 0 ) {
						while ( i-- ) {
							if ( !(unmatched[i] || setMatched[i]) ) {
								setMatched[i] = pop.call( results );
							}
						}
					}

					// Discard index placeholder values to get only actual matches
					setMatched = condense( setMatched );
				}

				// Add matches to results
				push.apply( results, setMatched );

				// Seedless set matches succeeding multiple successful matchers stipulate sorting
				if ( outermost && !seed && setMatched.length > 0 &&
					( matchedCount + setMatchers.length ) > 1 ) {

					Sizzle.uniqueSort( results );
				}
			}

			// Override manipulation of globals by nested matchers
			if ( outermost ) {
				dirruns = dirrunsUnique;
				outermostContext = contextBackup;
			}

			return unmatched;
		};

	superMatcher.el = 0;
	return bySet ?
		markFunction( superMatcher ) :
		superMatcher;
}

compile = Sizzle.compile = function( selector, group /* Internal Use Only */ ) {
	var i,
		setMatchers = [],
		elementMatchers = [],
		cached = compilerCache[ expando ][ selector + " " ];

	if ( !cached ) {
		// Generate a function of recursive functions that can be used to check each element
		if ( !group ) {
			group = tokenize( selector );
		}
		i = group.length;
		while ( i-- ) {
			cached = matcherFromTokens( group[i] );
			if ( cached[ expando ] ) {
				setMatchers.push( cached );
			} else {
				elementMatchers.push( cached );
			}
		}

		// Cache the compiled function
		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );
	}
	return cached;
};

function multipleContexts( selector, contexts, results ) {
	var i = 0,
		len = contexts.length;
	for ( ; i < len; i++ ) {
		Sizzle( selector, contexts[i], results );
	}
	return results;
}

function select( selector, context, results, seed, xml ) {
	var i, tokens, token, type, find,
		match = tokenize( selector ),
		j = match.length;

	if ( !seed ) {
		// Try to minimize operations if there is only one group
		if ( match.length === 1 ) {

			// Take a shortcut and set the context if the root selector is an ID
			tokens = match[0] = match[0].slice( 0 );
			if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
					context.nodeType === 9 && !xml &&
					Expr.relative[ tokens[1].type ] ) {

				context = Expr.find["ID"]( token.matches[0].replace( rbackslash, "" ), context, xml )[0];
				if ( !context ) {
					return results;
				}

				selector = selector.slice( tokens.shift().length );
			}

			// Fetch a seed set for right-to-left matching
			for ( i = matchExpr["POS"].test( selector ) ? -1 : tokens.length - 1; i >= 0; i-- ) {
				token = tokens[i];

				// Abort if we hit a combinator
				if ( Expr.relative[ (type = token.type) ] ) {
					break;
				}
				if ( (find = Expr.find[ type ]) ) {
					// Search, expanding context for leading sibling combinators
					if ( (seed = find(
						token.matches[0].replace( rbackslash, "" ),
						rsibling.test( tokens[0].type ) && context.parentNode || context,
						xml
					)) ) {

						// If seed is empty or no tokens remain, we can return early
						tokens.splice( i, 1 );
						selector = seed.length && tokens.join("");
						if ( !selector ) {
							push.apply( results, slice.call( seed, 0 ) );
							return results;
						}

						break;
					}
				}
			}
		}
	}

	// Compile and execute a filtering function
	// Provide `match` to avoid retokenization if we modified the selector above
	compile( selector, match )(
		seed,
		context,
		xml,
		results,
		rsibling.test( selector )
	);
	return results;
}

if ( document.querySelectorAll ) {
	(function() {
		var disconnectedMatch,
			oldSelect = select,
			rescape = /'|\\/g,
			rattributeQuotes = /\=[\x20\t\r\n\f]*([^'"\]]*)[\x20\t\r\n\f]*\]/g,

			// qSa(:focus) reports false when true (Chrome 21), no need to also add to buggyMatches since matches checks buggyQSA
			// A support test would require too much code (would include document ready)
			rbuggyQSA = [ ":focus" ],

			// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
			// A support test would require too much code (would include document ready)
			// just skip matchesSelector for :active
			rbuggyMatches = [ ":active" ],
			matches = docElem.matchesSelector ||
				docElem.mozMatchesSelector ||
				docElem.webkitMatchesSelector ||
				docElem.oMatchesSelector ||
				docElem.msMatchesSelector;

		// Build QSA regex
		// Regex strategy adopted from Diego Perini
		assert(function( div ) {
			// Select is set to empty string on purpose
			// This is to test IE's treatment of not explictly
			// setting a boolean content attribute,
			// since its presence should be enough
			// http://bugs.jquery.com/ticket/12359
			div.innerHTML = "<select><option selected=''></option></select>";

			// IE8 - Some boolean attributes are not treated correctly
			if ( !div.querySelectorAll("[selected]").length ) {
				rbuggyQSA.push( "\\[" + whitespace + "*(?:checked|disabled|ismap|multiple|readonly|selected|value)" );
			}

			// Webkit/Opera - :checked should return selected option elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			// IE8 throws error here (do not put tests after this one)
			if ( !div.querySelectorAll(":checked").length ) {
				rbuggyQSA.push(":checked");
			}
		});

		assert(function( div ) {

			// Opera 10-12/IE9 - ^= $= *= and empty values
			// Should not select anything
			div.innerHTML = "<p test=''></p>";
			if ( div.querySelectorAll("[test^='']").length ) {
				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:\"\"|'')" );
			}

			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
			// IE8 throws error here (do not put tests after this one)
			div.innerHTML = "<input type='hidden'/>";
			if ( !div.querySelectorAll(":enabled").length ) {
				rbuggyQSA.push(":enabled", ":disabled");
			}
		});

		// rbuggyQSA always contains :focus, so no need for a length check
		rbuggyQSA = /* rbuggyQSA.length && */ new RegExp( rbuggyQSA.join("|") );

		select = function( selector, context, results, seed, xml ) {
			// Only use querySelectorAll when not filtering,
			// when this is not xml,
			// and when no QSA bugs apply
			if ( !seed && !xml && !rbuggyQSA.test( selector ) ) {
				var groups, i,
					old = true,
					nid = expando,
					newContext = context,
					newSelector = context.nodeType === 9 && selector;

				// qSA works strangely on Element-rooted queries
				// We can work around this by specifying an extra ID on the root
				// and working up from there (Thanks to Andrew Dupont for the technique)
				// IE 8 doesn't work on object elements
				if ( context.nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) {
					groups = tokenize( selector );

					if ( (old = context.getAttribute("id")) ) {
						nid = old.replace( rescape, "\\$&" );
					} else {
						context.setAttribute( "id", nid );
					}
					nid = "[id='" + nid + "'] ";

					i = groups.length;
					while ( i-- ) {
						groups[i] = nid + groups[i].join("");
					}
					newContext = rsibling.test( selector ) && context.parentNode || context;
					newSelector = groups.join(",");
				}

				if ( newSelector ) {
					try {
						push.apply( results, slice.call( newContext.querySelectorAll(
							newSelector
						), 0 ) );
						return results;
					} catch(qsaError) {
					} finally {
						if ( !old ) {
							context.removeAttribute("id");
						}
					}
				}
			}

			return oldSelect( selector, context, results, seed, xml );
		};

		if ( matches ) {
			assert(function( div ) {
				// Check to see if it's possible to do matchesSelector
				// on a disconnected node (IE 9)
				disconnectedMatch = matches.call( div, "div" );

				// This should fail with an exception
				// Gecko does not error, returns false instead
				try {
					matches.call( div, "[test!='']:sizzle" );
					rbuggyMatches.push( "!=", pseudos );
				} catch ( e ) {}
			});

			// rbuggyMatches always contains :active and :focus, so no need for a length check
			rbuggyMatches = /* rbuggyMatches.length && */ new RegExp( rbuggyMatches.join("|") );

			Sizzle.matchesSelector = function( elem, expr ) {
				// Make sure that attribute selectors are quoted
				expr = expr.replace( rattributeQuotes, "='$1']" );

				// rbuggyMatches always contains :active, so no need for an existence check
				if ( !isXML( elem ) && !rbuggyMatches.test( expr ) && !rbuggyQSA.test( expr ) ) {
					try {
						var ret = matches.call( elem, expr );

						// IE 9's matchesSelector returns false on disconnected nodes
						if ( ret || disconnectedMatch ||
								// As well, disconnected nodes are said to be in a document
								// fragment in IE 9
								elem.document && elem.document.nodeType !== 11 ) {
							return ret;
						}
					} catch(e) {}
				}

				return Sizzle( expr, null, null, [ elem ] ).length > 0;
			};
		}
	})();
}

// Deprecated
Expr.pseudos["nth"] = Expr.pseudos["eq"];

// Back-compat
function setFilters() {}
Expr.filters = setFilters.prototype = Expr.pseudos;
Expr.setFilters = new setFilters();

// EXPOSE
if ( typeof define === "function" && define.amd ) {
	define(function() { return Sizzle; });
} else {
	window.Sizzle = Sizzle;
}
// EXPOSE

})( window );