/**
*jQueryHighlightPlugin
*/

jQuery.fn.highlight = function(pat){
	function innerHighlight(node, pat){
		var skip = 0;
		if (node.nodeType == 3){
			var pos = node.data.toUpperCase().indexOf(pat);
			if(pos >= 0){
				var spannode = document.createElement('span');
				spannode.className = 'highlight';
				var middlebit = node.splitText(pos);
				var endbit = middlebit.splitText(pat.length);
				var middleclone = middlebit.cloneNode(true);
				spannode.appendChild(middleclone);
				middlebit.parentNode.replaceChild(spannode, middlebit);
				skip = 1;
			}
		}else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)){
			for (var i = 0; i < node.childNodes.length; ++i){
				i += innerHighlight(node.childNodes[i], pat);
			}
		}
		return skip;
	}
	return this.each(function(){
		innerHighlight(this, pat.toUpperCase());
	});
};

jQuery.fn.removeHighlight = function(){
	return this.find("span.highlight").each(function(){
		this.parentNode.firstChild.nodeName;
		with (this.parentNode){
			replaceChild(this.firstChild, this);
			normalize();
		}
	}).end();
};