//function to open the LiveHelp Window
function openChat(varUrl)
{
var winleft=(screen.width-700)/2;
var wintop=(screen.height-450)/2;
window.open(varUrl,'chat','toolbar=0,location=0,status=1,menubar=0,scrollbars=0,resizable=1,width=700,height=450,top='+wintop+',left='+winleft);
}