function neuesFenster(adresse){
  if (navigator.appName == "Netscape") { 
    Fenster=window.open(adresse, "neues" ,"resizable=yes,toolbar=no,status=no,menubar=no,location=no,scrollbars=no,width=640,height=500"); Fenster.focus(Fenster); 
   } 
else { 
   Fenster=window.open(adresse, "neues" ,"resizable=yes,toolbar=no,status=no,menubar=no,location=no,scrollbars=no,width=640,height=500"); 
   }
}