 gtag('js', new Date());

  gtag('config', 'UA-60116966-3');
</script>
<script>
window.onload = function() {

  var imgs = document.querySelectorAll('img');

  // Upon clicking an image, open a new window with the
  // dimensions of the image, pointing the `data-url` link
  var on_click = function (e) {
    var d = e.target.dataset || {};
    if (d.url) {
      // Add some extra height for the modebar
      var height = 'height=' + (e.target.clientHeight * 1.05);
      var width = 'width=' + e.target.client