/* http://www.kryogenix.org/code/browser/searchhi/ */
/* Modified 20021006 to fix query string parsing and add case insensitivity */
/* Modified 20070316 to stop highlighting inside nosearchhi nodes */
/* Modified 20081217 to do in-page searching and wrap up in an object */
/* Modified 20081218 to scroll to first hit like 
   http://www.woolyss.free.fr/js/searchhi_Woolyss.js and say when not found */

searchhi = {
highlightWord: function(node,word) {
	// Iterate into this nodes childNodes
	if (node.hasChildNodes) {
		for (var hi_cn=0;hi_cn<node.childNodes.length;hi_cn++) {
			searchhi.highlightWord(node.childNodes[hi_cn],word);
		}
	}

	// And do this node itself
	if (node.nodeType == 3) { // text node
		tempNodeVal = node.nodeValue.toLowerCase();
		tempWordVal = word.toLowerCase();
		if (tempNodeVal.indexOf(tempWordVal) != -1) {
			var pn = node.parentNode;
			// check if we're inside a "nosearchhi" zone
			var checkn = pn;
			while (checkn.nodeType != 9 && 
			checkn.nodeName.toLowerCase() != 'body') { 
			// 9 = top of doc
				if (checkn.className.match(/\bnosearchhi\b/)) { return; }
				checkn = checkn.parentNode;
			}
			if (pn.className != "searchword") {
				// word has not already been highlighted!
				var nv = node.nodeValue;
				var ni = tempNodeVal.indexOf(tempWordVal);
				// Create a load of replacement nodes
				var before = document.createTextNode(nv.substr(0,ni));
				var docWordVal = nv.substr(ni,word.length);
				var after = document.createTextNode(nv.substr(ni+word.length));
				var hiwordtext = document.createTextNode(docWordVal);
				var hiword = document.createElement("span");
				hiword.className = "searchword";
				hiword.appendChild(hiwordtext);
				pn.insertBefore(before,node);
				pn.insertBefore(hiword,node);
				pn.insertBefore(after,node);
				pn.removeChild(node);
				searchhi.found += 1;
				if (searchhi.found == 1) pn.scrollIntoView();
			}
		}
	}
},

  googleSearchHighlight: function() {
	//var ref = document.referrer;
	//alert(document.URL+ "  # " + document.referrer);
	var ref = document.URL;
	if (ref.indexOf('?') == -1) return;
	var qs = ref.substr(ref.indexOf('?')+1);
	var qsa = qs.split('&');
	for (var i=0;i<qsa.length;i++) {
		var qsip = qsa[i].split('=');
	  if (qsip.length == 1) continue;
	  if (qsip[0] == 'q' || qsip[0] == 'p') { // q= for Google, p= for Yahoo
			var wordstring = unescape(qsip[1].replace(/\+/g,' '));
			searchhi.process(wordstring);
	  }
	}
  },
  
  process: function(wordstring) {
	searchhi.found = 0;
	var words = wordstring.split(/\s+/);
	for (w=0;w<words.length;w++) {
		searchhi.highlightWord(document.getElementsByTagName("body")[0],words[w]);
	}
	if (searchhi.found === 0) {
	  searchhi.nohits();
	}
  },
  
  nohits: function() {
  },
  
  init: function() {
	if (!document.createElement || !document.getElementsByTagName) return;
	// hook up forms of type searchhi
	var frms = document.getElementsByTagName("form");
	for (var i=0; i<frms.length; i++) {
	  if (frms[i].className.match(/\bsearchhi\b/)) {
		frms[i].onsubmit = function() {
		  var inps = this.getElementsByTagName("input");
		  for (var j=0; j<inps.length; j++) {
			if (inps[j].type == "text") {
			  searchhi.process(inps[j].value);
			  return false;
			}
		  }
		};
	  }
	}
	// highlight search engine referrer results
	searchhi.googleSearchHighlight();
  }
};

(function(i) {var u =navigator.userAgent;var e=/*@cc_on!@*/false; var st =
setTimeout;if(/webkit/i.test(u)){st(function(){var dr=document.readyState;
if(dr=="loaded"||dr=="complete"){i()}else{st(arguments.callee,10);}},10);}
else if((/mozilla/i.test(u)&&!/(compati)/.test(u)) || (/opera/i.test(u))){
document.addEventListener("DOMContentLoaded",i,false); } else if(e){	 (
function(){var t=document.createElement('doc:rdy');try{t.doScroll('left');
i();t=null;}catch(e){st(arguments.callee,0);}})();}else{window.onload=i;}})(searchhi.init);