public function canceladjustmentAction()
 {
     $request = $this->getRequest();
     $staff_id = $request->getParam('staff_id');
     $period_id = $request->getParam('period_id');
     $periodDateobj = new Zend_Date($request->getParam('period_date'), 'dd-MM-YYYY');
     $period_date = $periodDateobj->toString('YYYY-MM-dd');
     $deleted = Acad_Model_DbTable_FacultyAdjustment::cancelAdjustment($period_id, $staff_id, $period_date);
     if ($deleted > 0) {
         echo "Adjustment Deleted Successfully";
     } else {
         echo "Adjustment Not Deleted ";
     }
 }