function lh_openchatWindow(url,windowname)
{
    window.open(url+'?URLReferer='+escape(document.location),windowname,"menubar=1,resizable=1,width=450,height=420");	      
    return false;
}
var urlopen= "http://www.instant.no/livehelper/index.php/chat/startchat";
var windowname = "startchatwindow";

document.write('<p><a href="javascript:void()" onclick="lh_openchatWindow(urlopen,windowname)"><img src="/livehelper/design/defaulttheme/images/help-offline.png" alt="Help offline"/></a></p>');