switch ($op) {
case "noticias": include 'mod/noticias.php'; break;
case "contacto": include 'mod/contacto.php'; break;
case "consulta": include 'mod/consulta.php'; break;
case "situacion": include 'mod/situacion.php'; break;
case "servicios": include 'mod/servicios.php'; break;
case "buvelsa": include 'mod/buvelsa.php'; break;
case "aviso-legal": include 'mod/aviso_legal.inc.php'; break;
case "lopd": include 'mod/lopd.inc.php'; break;
default:
if (empty($op)) {
include_once 'mod/inicio.php';
} else {
echo '