check_downtime($event);
		if(is_a($event, 'SetupBuildingEvent')) {
			$sb = new SetupBlock("Downtime");
			$sb->add_bool_option("downtime", "Disable non-admin access: ");
			$sb->add_longtext_option("downtime_message", "
");
			$event->panel->add_main_block($sb);
		}
		if(is_a($event, 'ConfigSaveEvent')) {
			$event->config->set_bool_from_post("downtime");
			$event->config->set_string_from_post("downtime_message");
		}
		if(is_a($event, 'PageRequestEvent')) {
			global $config;
			if($config->get_bool("downtime")) {
				global $page;
				$page->add_side_block(new Block("Downtime", "DOWNTIME MODE IS ON!"), 0);
			}
		}
	}
// }}}
// do things {{{
	private function check_downtime($event) {
		global $user;
		global $config;
		if($config->get_bool("downtime") && !$user->is_admin() && 
				is_a($event, 'PageRequestEvent') && !$this->is_safe_page($event)) {
			$msg = $config->get_string("downtime_message");
			print <<
	
		Downtime
	
	
		$msg