$view = Tools::checkVar('view', 'home');
$action = Tools::checkVar('action');
$id = Tools::checkVar('id');
-$_SESSION['sort'] = Tools::checkVar('sort');
+$_SESSION['sort'] = Tools::checkVar('sort', 'id');
$url = new Url((isset ($_GET['url'])) ? $_GET['url'] : '');
if (isset($_GET['login'])) {