-jQuery.extend({
- expr: {
- "": function(a,i,m){return m[2]=="*"||jQuery.nodeName(a,m[2]);},
- "#": function(a,i,m){return a.getAttribute("id")==m[2];},
- ":": {
- // Position Checks
- lt: function(a,i,m){return i<m[3]-0;},
- gt: function(a,i,m){return i>m[3]-0;},
- nth: function(a,i,m){return m[3]-0==i;},
- eq: function(a,i,m){return m[3]-0==i;},
- first: function(a,i){return i==0;},
- last: function(a,i,m,r){return i==r.length-1;},
- even: function(a,i){return i%2==0;},
- odd: function(a,i){return i%2;},
-
- // Child Checks
- "first-child": function(a){return a.parentNode.getElementsByTagName("*")[0]==a;},
- "last-child": function(a){return jQuery.nth(a.parentNode.lastChild,1,"previousSibling")==a;},
- "only-child": function(a){return !jQuery.nth(a.parentNode.lastChild,2,"previousSibling");},
-
- // Parent Checks
- parent: function(a){return a.firstChild;},
- empty: function(a){return !a.firstChild;},
-
- // Text Check
- contains: function(a,i,m){return (a.textContent||a.innerText||jQuery(a).text()||"").indexOf(m[3])>=0;},
-
- // Visibility
- visible: function(a){return "hidden"!=a.type&&jQuery.css(a,"display")!="none"&&jQuery.css(a,"visibility")!="hidden";},
- hidden: function(a){return "hidden"==a.type||jQuery.css(a,"display")=="none"||jQuery.css(a,"visibility")=="hidden";},
-
- // Form attributes
- enabled: function(a){return !a.disabled;},
- disabled: function(a){return a.disabled;},
- checked: function(a){return a.checked;},
- selected: function(a){return a.selected||jQuery.attr(a,"selected");},
-
- // Form elements
- text: function(a){return "text"==a.type;},
- radio: function(a){return "radio"==a.type;},
- checkbox: function(a){return "checkbox"==a.type;},
- file: function(a){return "file"==a.type;},
- password: function(a){return "password"==a.type;},
- submit: function(a){return "submit"==a.type;},
- image: function(a){return "image"==a.type;},
- reset: function(a){return "reset"==a.type;},
- button: function(a){return "button"==a.type||jQuery.nodeName(a,"button");},
- input: function(a){return /input|select|textarea|button/i.test(a.nodeName);},
-
- // :has()
- has: function(a,i,m){return jQuery.find(m[3],a).length;},
-
- // :header
- header: function(a){return /h\d/i.test(a.nodeName);},
-
- // :animated
- animated: function(a){return jQuery.grep(jQuery.timers,function(fn){return a==fn.elem;}).length;}
- }
- },
-
- // The regular expressions that power the parsing engine
- parse: [
- // Match: [@value='test'], [@foo]
- /^(\[) *@?([\w-]+) *([!*$^~=]*) *('?"?)(.*?)\4 *\]/,
-
- // Match: :contains('foo')
- /^(:)([\w-]+)\("?'?(.*?(\(.*?\))?[^(]*?)"?'?\)/,
-
- // Match: :even, :last-child, #id, .class
- new RegExp("^([:.#]*)(" + chars + "+)")
- ],
-
- multiFilter: function( expr, elems, not ) {
- var old, cur = [];
-
- while ( expr && expr != old ) {
- old = expr;
- var f = jQuery.filter( expr, elems, not );
- expr = f.t.replace(/^\s*,\s*/, "" );
- cur = not ? elems = f.r : jQuery.merge( cur, f.r );
- }
-
- return cur;
- },
-
- find: function( t, context ) {
- // Quickly handle non-string expressions
- if ( typeof t != "string" )
- return [ t ];
-
- // check to make sure context is a DOM element or a document
- if ( context && context.nodeType != 1 && context.nodeType != 9)
- return [ ];
-
- // Set the correct context (if none is provided)
- context = context || document;