public function listuserAction()
 {
     $muser = new Admin_Model_User();
     $paginator = Zend_Paginator::factory($muser->list_user());
     $paginator->setItemCountPerPage(15);
     $paginator->setPageRange(5);
     $currentPage = $this->_request->getParam('page', 1);
     $paginator->setCurrentPageNumber($currentPage);
     $this->view->books = $paginator;
 }