/*  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>  */  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(); };