4248 		href: function(elem){
4249 			return elem.getAttribute("href");
4262 			for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
4263 				if ( (elem = checkSet[i]) ) {
4264 					while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {}
4266 					checkSet[i] = isPartStrNotTag || elem && elem.nodeName === part ?
4267 						elem || false :
4268 						elem === part;
4283 					var elem = checkSet[i];  variable
4284 					if ( elem ) {
4285 						var parent = elem.parentNode;
4291 					var elem = checkSet[i];  variable
4292 					if ( elem ) {
4294 							elem.parentNode :
4295 							elem.parentNode === part;
4427 		enabled: function(elem){
4428 			return elem.disabled === false && elem.type !== "hidden";
4430 		disabled: function(elem){
4431 			return elem.disabled === true;
4433 		checked: function(elem){
4434 			return elem.checked === true;
4436 		selected: function(elem){
4437 			elem.parentNode.selectedIndex;
4438 			return elem.selected === true;
4440 		parent: function(elem){
4441 			return !!elem.firstChild;
4443 		empty: function(elem){
4444 			return !elem.firstChild;
4446 		has: function(elem, i, match){
4447 			return !!Sizzle( match[3], elem ).length;
4449 		header: function(elem){
4450 			return /h\d/i.test( elem.nodeName );
4452 		text: function(elem){
4453 			return "text" === elem.type;
4455 		radio: function(elem){
4456 			return "radio" === elem.type;
4458 		checkbox: function(elem){
4459 			return "checkbox" === elem.type;
4461 		file: function(elem){
4462 			return "file" === elem.type;
4464 		password: function(elem){
4465 			return "password" === elem.type;
4467 		submit: function(elem){
4468 			return "submit" === elem.type;
4470 		image: function(elem){
4471 			return "image" === elem.type;
4473 		reset: function(elem){
4474 			return "reset" === elem.type;
4476 		button: function(elem){
4477 			return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
4479 		input: function(elem){
4480 			return /input|select|textarea|button/i.test(elem.nodeName);
4484 		first: function(elem, i){
4487 		last: function(elem, i, match, array){
4490 		even: function(elem, i){
4493 		odd: function(elem, i){
4496 		lt: function(elem, i, match){
4499 		gt: function(elem, i, match){
4502 		nth: function(elem, i, match){
4505 		eq: function(elem, i, match){
4510 		PSEUDO: function(elem, match, i, array){
4514 				return filter( elem, i, match, array );
4516 				return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
4521 					if ( not[i] === elem ) {
4529 		CHILD: function(elem, match){
4530 			var type = match[1], node = elem;
4538 					node = elem;
4552 						parent = elem.parentNode;
4554 					if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
4564 					var diff = elem.nodeIndex - last;
4572 		ID: function(elem, match){
4573 			return elem.nodeType === 1 && elem.getAttribute("id") === match;
4575 		TAG: function(elem, match){
4576 			return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
4578 		CLASS: function(elem, match){
4579 			return (" " + (elem.className || elem.getAttribute("class")) + " ")
4582 		ATTR: function(elem, match){
4585 					Expr.attrHandle[ name ]( elem ) :
4586 					elem[ name ] != null ?
4587 						elem[ name ] :
4588 						elem.getAttribute( name ),
4613 		POS: function(elem, match, i, array){
4617 				return filter( elem, i, match, array );
4736 		Expr.filter.ID = function(elem, match){  argument
4737 			var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
4738 			return elem.nodeType === 1 && node && node.nodeValue === match;
4774 		Expr.attrHandle.href = function(elem){  argument
4775 			return elem.getAttribute("href", 2);
4834 		var elem = checkSet[i];
4835 		if ( elem ) {
4836 			if ( sibDir && elem.nodeType === 1 ){
4837 				elem.sizcache = doneName;
4838 				elem.sizset = i;
4840 			elem = elem[dir];
4843 			while ( elem ) {
4844 				if ( elem.sizcache === doneName ) {
4845 					match = checkSet[elem.sizset];
4849 				if ( elem.nodeType === 1 && !isXML ){
4850 					elem.sizcache = doneName;
4851 					elem.sizset = i;
4854 				if ( elem.nodeName === cur ) {
4855 					match = elem;
4859 				elem = elem[dir];
4870 		var elem = checkSet[i];
4871 		if ( elem ) {
4872 			if ( sibDir && elem.nodeType === 1 ) {
4873 				elem.sizcache = doneName;
4874 				elem.sizset = i;
4876 			elem = elem[dir];
4879 			while ( elem ) {
4880 				if ( elem.sizcache === doneName ) {
4881 					match = checkSet[elem.sizset];
4885 				if ( elem.nodeType === 1 ) {
4887 						elem.sizcache = doneName;
4888 						elem.sizset = i;
4891 						if ( elem === cur ) {
4896 					} else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
4897 						match = elem;
4902 				elem = elem[dir];
4916 var isXML = function(elem){  argument
4917 	return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
4918 		!!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";