$_POST['theme'] = clean_file_name($_POST['theme']);
$chg_theme = user_theme() != $_POST['theme'];
$chg_lang = $_SESSION['language']->code != $_POST['language'];
$_POST['theme'] = clean_file_name($_POST['theme']);
$chg_theme = user_theme() != $_POST['theme'];
$chg_lang = $_SESSION['language']->code != $_POST['language'];