public function manage($page = 1)
{
$this->authority(10);
$user_table = new UserTable();
$count = $user_table->count();
$page = Util::calculate_page($count, 10, $page);
$users = $user_table->select_ten($page['start_num']);
$user_type_table = new UserTypeTable();
$types = $user_type_table->select_all();
$view_data = array('users' => $users, 'page' => $page, 'types' => $types);
$this->my_render('manage', $view_data);
}