function popup(str)
{
  w = window.open("","","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=575,height=400");
  w.location = str;
}

function popup2(str)
{
  w = window.open("","","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=700,height=500");
  w.location = str;
}

function checkChange(_form, _select, _index) {
  thisForm = document.getElementById(_form);
  if (_select.selectedIndex == _index)
    return false;
  else
    thisForm.submit();
}