/* http://www.kryogenix.org/code/browser/searchhi/ */
/* Modified 20021006 to fix query string parsing and add case insensitivity */
function highlightWord(node,word) {
	// Iterate into this nodes childNodes
	if (node.hasChildNodes) {
		var hi_cn;
		for (hi_cn=0;hi_cn<node.childNodes.length;hi_cn++) {
			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) {
			pn = node.parentNode;
			if (pn.className != "searchword") {
				// word has not already been highlighted!
				nv = node.nodeValue;
				ni = tempNodeVal.indexOf(tempWordVal);
				// Create a load of replacement nodes
				before = document.createTextNode(nv.substr(0,ni));
				docWordVal = nv.substr(ni,word.length);
				after = document.createTextNode(nv.substr(ni+word.length));
				hiwordtext = document.createTextNode(docWordVal);
				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);
			}
		}
	}
}

function googleSearchHighlight() {
		
	if (!document.createElement) return;
	
	ref = document.referrer;

	if (ref.indexOf('?') == -1) return;

	qs = ref.substr(ref.indexOf('?')+1);
	qsa = qs.split('&');
	for (i=0;i<qsa.length;i++) {
		qsip = qsa[i].split('=');
		
		if (qsip.length == 1) continue;

   if (qsip[1]== '' ||qsip[0]=='all' ||qsip[0]=='id' ||qsip[0]=='news_Content' 
					||qsip[0]=='comefrom'  ||qsip[0]=='add_start' ||qsip[0]=='add_end' 
					||qsip[0]=='xml%24number' ||qsip[0]=='page' 
					||qsip[0]=='xml%24business2' ||qsip[0]=='xml%24business1'
					||qsip[0]=='news_index' ||qsip[0]=='pub_style'
					||qsip[0]=='xml%24pub_style' ||qsip[0]=='sorting2'||qsip[0]=='curPage'
   
   ) continue;
   
		//if (qsip[0] == 'title' || qsip[0] == 'query') { // q= for Google, p= for Yahoo
		
			words = unescape(decodeURIComponent(qsip[1].replace(/\+/g,' '))).split(/\s+/);
			for (w=0;w<words.length;w++) {
				highlightWord(document.getElementsByTagName("body")[0],words[w]);
			}
	//	}
	}
}



window.onload = function() {

googleSearchHighlight();

	

}