public function getButtonHTML()
    {
        $link = $this->getButtonLink();

        $stageLink = Controller::join_links($link, '?stage=Stage');
        $liveLink = Controller::join_links($link, '?stage=Live');

        return '<span class="better-buttons-frontend-links">
                    <a class="better-buttons-frontend-link" target="_blank" href="' . $stageLink . '">'
                        ._t('GridFieldBetterButtons.VIEWONDRAFTSITE', 'Draft site').
                    '</a> |
                    <a class="better-buttons-frontend-link" target="_blank" href="' . $liveLink . '">'.
                        _t('GridFieldBetterButtons.VIEWONLIVESITE', 'Live site').
                    '</a></span>';
    }