$.fObject = '';
$.sResult = 0;
jQuery.fn.highlight = function(pat) {
 function innerHighlight(node, pat) {
  var skip = 0;
  if (node.nodeType == 3) {
   var pos = node.data.toUpperCase().indexOf(pat);
   if (pos >= 0) {
    var spannode = document.createElement('span');
    spannode.className = 'highlight';
    var middlebit = node.splitText(pos);
    var endbit = middlebit.splitText(pat.length);
    var middleclone = middlebit.cloneNode(true);
    spannode.appendChild(middleclone);
    middlebit.parentNode.replaceChild(spannode, middlebit);
    skip = 1;
    if(!$.fObject) $.fObject = spannode;
    $.sResult++;
   }
  }
  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();
};


$(document).ready(function() {
   $("#btnSearch").click(function() {
    var keyword = $('#txtKeyword').val();
	if(keyword != ''){
		$.fObject = '';
		$.sResult = 0;
		$('body').removeHighlight().highlight(keyword);
		
		if(!$.sResult)
		{
			$.prompt('Please broaden your search by topics!');
		}
		else
		{
			$.fObject.scrollIntoView();
		}	
		
		
	} 
	   	
   });
 });