function getBanLength($id)
 {
     $query = "SELECT length_id, length, time_scale FROM gban_length\r\n              WHERE length_id = '" . $id . "'";
     $this->db->sql_query($query);
     $temp = $this->db->get_row();
     $length = new Length();
     $length->setId($temp['length_id']);
     $length->setLength($temp['length']);
     $length->setTimeScale($temp['time_scale']);
     return $length;
 }