var directory = "";
var RefPageID = directory;

if(RefPageID == "")
 {
   var ref = getcookie("RefPageID");
   if(ref == "" || ref == "NONE")
    {
      var r = document.location.toString();
      var index = r.indexOf("=");
      if(index !=-1)
      RefPageID = r.substr(index+1,r.length-index);
      else
      RefPageID = "NONE";
    }
    
    else
    RefPageID = ref;    
 }
    
setcookie("RefPageID",RefPageID,60);