public function actionDel()
 {
     $labor = CCorriculumsManager::getLabor(CRequest::getInt("id"));
     if (is_null($labor->section)) {
         $id = $labor->discipline_id;
     } else {
         $id = $labor->section->discipline_id;
     }
     $labor->remove();
     $this->redirect("disciplines.php?action=edit&id=" . $id);
 }