function Form_Validator(theForm)
{

  if (theForm.twn.selectedIndex < 0)
  {
    alert("Please select one of the \"Towns/Areas\" options.");
    theForm.twn.focus();
    return (false);
  }

  var numSelected = 0;
  var i;
  for (i = 0;  i < theForm.twn.length;  i++)
  {
    if (theForm.twn.options[i].selected)
        numSelected++;
  }
  if (numSelected < 1)
  {
    alert("Please select at least 1 of the \"Towns/Areas\" options.");
    theForm.twn.focus();
    return (false);
  }

  return (true);
}

//-------------------------------------------------------------------------------