{{- with site.Params.cdn_domain }}
  <script>
    /* If an image, stylesheet or script fails on the CDN, load the site's own copy instead */
    (function () {
      var base = 'https://{{ . }}/gh/Brinsleym/website@master';
      window.addEventListener('error', function (e) {
        var el = e.target, attr = el.tagName === 'LINK' ? 'href' : 'src', url = el.getAttribute && el.getAttribute(attr);
        if (!/^(IMG|LINK|SCRIPT)$/.test(el.tagName) || !url || url.indexOf(base) !== 0) return;
        url = url.slice(base.length).replace(/^\/static\//, '/');
        if (el.tagName === 'SCRIPT') {
          /* A failed script can't be retried in place; add a fresh one after it */
          var s = document.createElement('script');
          s.src = url;
          s.async = false;
          el.parentNode.insertBefore(s, el.nextSibling);
        } else {
          el.removeAttribute('srcset');
          el.setAttribute(attr, url);
        }
      }, true);
    })();
  </script>
{{- end }}