public static function loadAdminLanguageFile($langtag = "")
{
$lang = JFactory::getLanguage();
if ($langtag == "") {
$langtag = $lang->getTag();
}
$langpatch = JPATH_ROOT . '/administrator/components/com_jshopping/lang/';
if (file_exists($langpatch . 'override/' . $langtag . '.php')) {
include_once $langpatch . 'override/' . $langtag . '.php';
}
if (file_exists($langpatch . $langtag . '.php')) {
include_once $langpatch . $langtag . '.php';
} else {
include_once $langpatch . 'en-GB.php';
}
JSFactory::reloadConfigFieldTLF();
}