function opnWin(lfdnr)
 {
  var URL = ("gbmad.php?gbndx="+lfdnr);
  oParm = "toolbar=no,width=350,height=100,left=20,top=20,directories=no,status=no,scrollbars=no,menubar=no";
  newWin = open(URL,"guestbook",oParm);
 }