public function multiDeleteAction()
 {
     if ($this->_request->isPost()) {
         $tblUser = new Default_Model_Users();
         $tblUser->deleteItem($this->_arrParams, array('task' => 'admin-multi-delete'));
         $this->_redirect($this->_mainAction);
     }
     $this->_helper->viewRenderer->setNoRender();
 }