//PopUp Fenster 
function popup(datei, name, breit, hoch, scroll)
 {
 var winbreite = (screen.width - breit) / 2 ;
 var winhoehe = (screen.height - hoch) / 2;
 parameter = 'height='+hoch+',width='+breit+',top='+winhoehe+',left='+winbreite+',scrollbars='+scroll;
 pop = window.open(datei, name, parameter);
  if (parseInt(navigator.appVersion) >= 4) {
 pop.window.focus(); }
 }