50th_guestbook.js

function buildURL() {
  const hostname = window.location.hostname;
  const pathname = window.location.pathname.slice(1);
  const params = new URLSearchParams(window.location.search);
  const storyID = params.get('id');
  return `?origin_host=${hostname}&origin_path=${encodeURIComponent(pathname)}${storyID?`&id=${storyID}`:''}`;
}

const mapFrame = document.getElementById('mapFrame');
if (typeof (mapFrame) != 'undefined' && mapFrame != null) {
  mapFrame.src = `https://maps.greenpeace.org/maps/gpint/50th_guestbook/${buildURL()}`;
}