public function getuserpaymentdetailsAction()
 {
     $this->_helper->viewRenderer->setNoRender();
     $this->_helper->getHelper("layout")->disableLayout();
     $aJson = null;
     $oModelVOrderPaymentHistory = new User_Model_VOrderPaymentHistory();
     $oModelOrderPayment = new User_Model_OrderPayment();
     if ($this->_request->isPost()) {
         $aPostData = $this->_request->getPost();
         $nOrderPaymentId = $aPostData["order_payment_id"];
         if ($oModelOrderPayment->getUserPayment($nOrderPaymentId)) {
             $aJson = $oModelVOrderPaymentHistory->getUserPaymentDetails($nOrderPaymentId)->toArray();
         }
     }
     header("Content-type: application/json");
     echo Zend_Json::encode($aJson);
     exit;
 }