function add_usb_disk()
{
    $backup = new backup();
    $backup->add_usb_backup($_GET["disk_usb_add"]);
    if (!$backup->SaveToLdap()) {
        echo $backup->ldap_error;
    } else {
        $tpl = new templates();
        echo $tpl->_ENGINE_parse_body('{success}');
    }
}