win = null;
function winopen($n,$w,$h) {
      win = window.open("","Window","toolbar=no,directories=no,menubar=no,scrollbars=no,status=no,resizable=no,width="+$w+",height="+$h+",left=200,top=240");
      if (win != null) {
      if (win.opener == null) {
           win.opener = self
           }
      win.location.href = "bildanzeige.php?n="+$n;
      }
      win.focus();
}