nth: "m[3]-0==i",
eq: "m[3]-0==i",
first: "i==0",
last: "i==r.length-1",
even: "i%2==0",
odd: "i%2",
// Child Checks
"nth-child": "jQuery.sibling(a,m[3]).cur",
"first-child": "jQuery.sibling(a,0).cur",
"last-child": "jQuery.sibling(a,0).last",
"only-child": "jQuery.sibling(a).length==1",
// Parent Checks
parent: "a.childNodes.length",
empty: "!a.childNodes.length",
// Text Check
contains: "(a.innerText||a.innerHTML).indexOf(m[3])>=0",
// Visibility
visible: "a.type!='hidden'&&jQuery.css(a,'display')!='none'&&jQuery.css(a,'visibility')!='hidden'",
hidden: "a.type=='hidden'||jQuery.css(a,'display')=='none'||jQuery.css(a,'visibility')=='hidden'",
// Form attributes
enabled: "!a.disabled",
disabled: "a.disabled",
checked: "a.checked",
selected: "a.selected || jQuery.attr(a, 'selected')",
// Form elements
text: "a.type=='text'",
radio: "a.type=='radio'",
