code: function fixLinks(e) {
    if (!e.ownerDocument.originalURL) {
      return;
    }
  
    function fixLink(link) {
      var fixed = url.resolve(e.ownerDocument.originalURL, link);
      return fixed;
    }
  
    var i;
    var imgs = e.getElementsByTagName('img');
    for (i = imgs.length - 1; i >= 0; --i) {
      var src = imgs[i].getAttribute('src');
      if (src) {
        imgs[i].setAttribute('src', fixLink(src));
      }
    }
  
    var as = e.getElementsByTagName('a');
    for (i = as.length - 1; i >= 0; --i) {
      var href = as[i].getAttribute('href');
      if (href) {
        as[i].setAttribute('href', fixLink(href));
      }
    }
  }
docs: Converts relative urls to absolute for images and links