function GetUserList()
 {
     /* Return an array of objects relating to all defined users. */
     global $dbh;
     $sql = "SELECT * FROM fac_User ORDER BY Name ASC;";
     $userList = array();
     foreach ($dbh->query($sql) as $row) {
         $userList[] = User::RowToObject($row);
     }
     return $userList;
 }