function Popup(arg0)
{
  var popupURL=arg0;
  var popup = null;
  if (popup != null && popup.open) popup.close();
  popup = window.open(popupURL,"Popup",
   'toolbar=0,location=0,directories=0,width=750,height=600,status=0,menubar=0,scrollbars=0,resizable=0,left=10,top=10,screenX=650,screenY=650');

  if( navigator.appName.substring(0,8) == "Netscape" )
  {
    popup.location = popupURL;
  }
}