if (Tools::isSubmit('vremya') AND !empty($_POST['vremya']))
        {
            if (!Validate::isvremya($_POST['vremya']))
                $errors[] = Tools::displayError('invalid vremya');
            elseif ($oldvremya = vremya::getvremyaByCartId(intval($cart->id)))
            {
                $vremya = new vremya(intval($oldvremya['id_vremya']));
                $vremya->vremya = htmlentities($_POST['vremya'], ENT_COMPATV, 'UTF-8');
                $vremya->update();
            }
            else
            {
                $vremya = new vremya();
                $vremya->vremya = htmlentities($_POST['vremya'], ENT_COMPATV, 'UTF-8');
                $vremya->id_cart = intval($cart->id);
                $vremya->id_customer = intval($cart->id_customer);
                $vremya->add();
            }
}
    if (sizeof($errors))
    {
        if (Tools::getValue('ajax'))
            die('{\'hasError\' : true, errors : [\''.implode('\',\'', $errors).'\']}');
        $smarty->assign('errors', $errors);
        displayAddress();
        include_once(dirname(__FILE__).'/footer.php');
        exit;
    }
    if (Tools::getValue('ajax'))
        die(true);
}