function vrml_focus(){

if (document.referrer == "" && (navigator.appName != "Microsoft Internet Explorer" || navigator.appVersion > 3))

// Link aus VRML, da referrer unbekannt

      {
      self.name="popup"
      popup=window.open("","popup","toolbar=no,location=yes,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes,width=600,height=800");
      popup.focus();
      }

}