3 function maintenance_content(App $a) {
4 header('HTTP/1.1 503 Service Temporarily Unavailable');
5 header('Status: 503 Service Temporarily Unavailable');
6 header('Retry-After: 600');
8 return replace_macros(get_markup_template('maintenance.tpl'), array(
9 '$sysdown' => t('System down for maintenance')