public static function &GetDefaultCategory()
    {
        static $oCategory;
        if (!$oCategory) {
            $oRootCategories = &TdbShopCategoryList::GetChildCategories();
            if ($oRootCategories->Length() > 0) {
                $oCategory = &$oRootCategories->Current();
            }
        }

        return $oCategory;
    }