var bookero_config = { id: 'nXLjGD3DhcA2', container: 'bookero', type: 'standard', position: '', plugin_css: true, lang: 'pl' }; (function() { var d = document, s = d.createElement('script'); s.src = 'https://cdn.bookero.pl/plugin/v2/js/bookero-compiled.js'; d.body.appendChild(s); })();