/*
 highlight v3
 Highlights arbitrary terms.
 <http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html>
 MIT license.
 Johann Burkard
 <http://johannburkard.de>
 <mailto:jb@eaio.com>
 */
(function($) {
	$.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());
		});
	};
	
	$.fn.removeHighlight = function() {
		return $('span.highlight', this).each(function(i, elem){
			$(elem).replaceWith($(elem).text());
		})
		.end();

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