jQuery.extend({highlight:function(node,re,nodeName,className){if(node.nodeType===3){var match=node.data.match(re);if(match){var highlight=document.createElement(nodeName||"span");highlight.className=className||"highlight";var wordNode=node.splitText(match.index);wordNode.splitText(match[0].length);var wordClone=wordNode.cloneNode(true);highlight.appendChild(wordClone);wordNode.parentNode.replaceChild(highlight,wordNode);return 1}}else if(node.nodeType===1&&node.childNodes&&!/(script|style)/i.test(node.tagName)&&!(node.tagName===nodeName.toUpperCase()&&node.className===className)){for(var i=0;i<node.childNodes.length;i++){i+=jQuery.highlight(node.childNodes[i],re,nodeName,className)}}return 0}});jQuery.fn.unhighlight=function(options){var settings={className:"highlight",element:"span"};jQuery.extend(settings,options);return this.find(settings.element+"."+settings.className).each(function(){var parent=this.parentNode;parent.replaceChild(this.firstChild,this);parent.normalize()}).end()};jQuery.fn.highlight=function(words,options){var settings={className:"highlight",element:"span",caseSensitive:false,wordsOnly:false};jQuery.extend(settings,options);if(words.constructor===String){words=[words]}words=jQuery.grep(words,function(word,i){return word!=""});words=jQuery.map(words,function(word,i){return word.replace(/[-[\]{}()*+?.,\\^$|#\s]/g,"\\$&")});if(words.length==0){return this}var flag=settings.caseSensitive?"":"i";var pattern="("+words.join("|")+")";if(settings.wordsOnly){pattern="\\b"+pattern+"\\b"}var re=new RegExp(pattern,flag);return this.each(function(){jQuery.highlight(this,re,settings.element,settings.className)})};
