protected static function load_seat($event, $id = null)
 {
     if (!$id) {
         $id = $_GET['id'];
     }
     $id = mysql_real_escape_string($id);
     $event_id = mysql_real_escape_string($event->id);
     $event_seat = EventSeat::find("event_seats.id = {$id} AND event_seats.event_id = '{$event_id}'", null, false, 1);
     if ($event_seat) {
         return $event_seat;
     } else {
         Error404();
     }
 }
 protected static function load_seat($id, $event)
 {
     $seat_id = mysql_real_escape_string($id);
     $event_id = mysql_real_escape_string($event->id);
     $seat = EventSeat::find("event_seats.id = '{$seat_id}' AND event_seats.event_id = '{$event_id}'");
     if ($seat) {
         return $seat;
     } else {
         Error404();
     }
 }