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/* jQuery selector to match exact text inside an element
 *  http://wowmotty.blogspot.com/2010/05/jquery-selectors-adding-contains-exact.html
 *  :containsExact()     - case insensitive
 *  :containsExactCase() - case sensitive
 *  :containsRegex()     - set by user ( use: $(el).find(':containsRegex("/(red|blue|yellow)/gi")') )
 */
$.extend( $.expr[":"], {
	containsExact: $.expr.createPseudo ?
		$.expr.createPseudo(function(text) {
			return function(elem) {
				return $.trim(elem.innerHTML.toLowerCase()) === text.toLowerCase();
			};
		}) :
		// support: jQuery <1.8
		function(elem, i, match) {
			return $.trim(elem.innerHTML.toLowerCase()) === match[3].toLowerCase();
		},

	containsExactCase: $.expr.createPseudo ?
		$.expr.createPseudo(function(text) {
			return function(elem) {
				return $.trim(elem.innerHTML) === text;
			};
		}) :
		// support: jQuery <1.8
		function(elem, i, match) {
			return $.trim(elem.innerHTML) === match[3];
		},

	containsRegex: $.expr.createPseudo ?
		$.expr.createPseudo(function(text) {
			var reg = /^\/((?:\\\/|[^\/])+)\/([mig]{0,3})$/.exec(text);
			return function(elem) {
				return reg ? RegExp(reg[1], reg[2]).test($.trim(elem.innerHTML)) : false;
			};
		}) :
		// support: jQuery <1.8
		function(elem, i, match) {
			var reg = /^\/((?:\\\/|[^\/])+)\/([mig]{0,3})$/.exec(match[3]);
			return reg ? RegExp(reg[1], reg[2]).test($.trim(elem.innerHTML)) : false;
		}

});