public function deleteAction()
 {
     $this->_helper->viewRenderer->setNoRender();
     $this->_helper->getHelper('layout')->disableLayout();
     $request = $this->getRequest();
     if ($request->isPost()) {
         $data = $request->getPost();
         if ($data['delete'] == 'Yes') {
             if (!is_array($data['id'])) {
                 $data['id'] = array($data['id']);
             }
             $positionDb = new Purchases_Model_DbTable_Purchaseorderpos();
             $positionDb->deletePositions($data['id']);
             //Reorder and calculate
             $this->setOrdering($data['purchaseorderid']);
             $this->_helper->Calculate($data['purchaseorderid'], $this->_currency, $this->_date, $this->_user['id']);
         }
     }
 }