public function getchequesbyprovidfilterajaxAction()
 {
     try {
         $request = $this->getRequest();
         if ($this->getRequest()->isPost()) {
             $this->_helper->layout->disableLayout();
             $this->_helper->viewRenderer->setNoRender();
             $provId = (int) $request->prov_id;
             $pos = (int) $request->pos;
             $liqDate = $request->liqDate;
             if ($provId) {
                 $cMapper = new Gyuser_Model_ChequesDataMapper();
                 $result = $cMapper->GetChequeDetailsByProvIdJson($provId, $pos, $liqDate);
                 if ($result) {
                     echo json_encode($result);
                 } else {
                     echo 'f';
                 }
             }
         }
     } catch (Exception $e) {
         echo $e;
     }
 }