function openPopup(url,width,height) {
  top.name = "Bilder";
  var popupURL = url;
  var popup = window.open(popupURL,"neuesFenster",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width='+width+',height='+height);
  if( navigator.appName.substring(0,8) == "Netscape" ) {
    popup.location = popupURL;
    popup.opener = self;
  }
}