public function showPage($selected = '')
 {
     if (!FUTURI_Session::isUserAdmin()) {
         $this->load->view("nopermission_admin");
     }
     $this->load->view("admin_header", array('selected' => $selected));
     switch ($selected) {
         case "usuarios":
             include "application/controllers/User.php";
             define_constants();
             $userController = new User();
             $userController->showListPage('', 10, false);
             break;
         case "estatisticas":
             break;
         case "backups":
             include "application/controllers/Backup.php";
             define_constants();
             $backupController = new Backup();
             $backupController->showListPage('', 10, false);
             break;
         case "configs":
             $this->load->view("admin_configs", array("object_handler" => $this));
             break;
         case "relatorios":
             include "application/controllers/Report.php";
             define_constants();
             $reportController = new Report();
             $reportController->showListPage('', 10, false);
             break;
         case "graficos":
             include "application/controllers/Chart.php";
             define_constants();
             $chartController = new Chart();
             $chartController->showListPage('', 10, false);
             break;
     }
 }