function news_popup(url,windowName) {
  var breite = 630 - 10;
  var hoehe  = 600 - 25;
  if (NS4) popupWin = open(url, windowName, "innerHeight="+hoehe+",innerWidth="+breite+",screenX=30,screenY=30,location=no,resizable=yes,directories=no,menubar=no,status=no,toolbar=no,scrollbars=1,scrollbars=yes");
  else     popupWin = open(url, windowName, "height="     +hoehe+",width="+breite+",left=30,top=30,location=no,resizable=yes,directories=no,menubar=no,status=no,toolbar=no,scrollbars=1,scrollbars=yes");
  popupWin.focus();
}