function fenster(URL)
  {
   MeinFenster = window.open(URL, "Zweitfenster", "width=350,height=440,innerWidth=350,\
   innerHeight=440,screenX=362,screenY=240,scrollbars,locationbar=no,menubar=no,dependent=yes,status=no");
   MeinFenster.focus();
  }

function bildfenster(URL)
  {
   MeinFenster = window.open(URL, "Zweitfenster", "width=425,height=461,innerWidth=425,\
   innerHeight=461,screenX=312,screenY=240,scrollbars=no,locationbar=no,menubar=no,dependent=yes,status=no");
   MeinFenster.focus();
  }