ns-data.js' }, sync);
      addTag('script', {src: 'js/pages-data.js' }, sync);
      addTag('script', {src: 'js/nav-data.js' }, sync);
      addTag('script', {src: 'js/docs.min.js' }, sync);
      

      function addTag(name, attributes, sync) {
        var el = document.createElement(name),
            attrName;

        for (attrName in attributes) {
          el.setAttribute(attrName, attributes[attrName]);
        }

        sync ? document.write(outerHTML(el)) : headEl.appendChild(el);
      }

     