/* 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[0] == 'q' || qsip[0] == 'p') { // q= for Google, p= for Yahoo
			words = unescape(qsip[1].replace(/\+/g,' ')).split(/\s+/);
	                for (w=0;w<words.length;w++) {
				        if(words[w].length > 2) highlightWord(document.getElementsByTagName("body")[0],words[w]);
                	}
	        }
	}
}

lahighlight = '';
function highlightUser(username){
username = username.toLowerCase();
    if(lahighlight!=username){
        lahighlight=username;
        
        node = document.getElementById('lastactions');
   		var hi_cn;
  		for (hi_cn=0;hi_cn<node.childNodes.length;hi_cn++) 
        {
  			tempnode = node.childNodes[hi_cn];
  			if (tempnode.nodeName == 'A')
            {
  			    tempNodeVal = tempnode.firstChild.nodeValue.toLowerCase();
  			    if (tempNodeVal == username)
                {
                    tempnode.setAttribute('class', "searchword");
    		    }
    		    else{
                    tempnode.setAttribute('class', "");
                }
    	    }
  		}
    }
}

function highlightUserRecursive(username, node, level){
username = username.toLowerCase();
    if(lahighlight!=username||level>0){
        lahighlight=username;
        
   		var hi_cn;
  		for (hi_cn=0;hi_cn<node.childNodes.length;hi_cn++) 
        {
  			tempnode = node.childNodes[hi_cn];
  			if (tempnode.nodeName == 'A')
            {
  			    tempNodeVal = tempnode.firstChild.nodeValue.toLowerCase();
  			    if (tempNodeVal == username)
                {
                    tempnode.setAttribute('class', "searchword");
    		    }
    		    else{
                    tempnode.setAttribute('class', "");
                }
    	    }
    	  else{
        highlightUserRecursive(username, tempnode, level+1);
        }
  		}
    }
}

addEventHandler(window,'load',googleSearchHighlight,false);