public function listaradministradoresAction()
 {
     $permiso = Zend_Registry::get('permiso');
     if ($permiso == 1) {
         $modelo = new Application_Model_DbTable_Usuarios();
         $admins = $modelo->todoslosadministradores();
         Zend_View_Helper_PaginationControl::setDefaultViewPartial('paginator/items.phtml');
         $paginator = Zend_Paginator::factory($admins);
         if ($this->_hasParam('page')) {
             $paginator->setCurrentPageNumber($this->_getParam('page'));
         }
         $this->view->paginator = $paginator;
     } else {
         echo '<script type="text/javascript"> 
             alert("Opcion valida solo para SuperAdminstrador "); 
             document.location="/administrador";
         </script> 
         ';
     }
 }