<script>

// Makes figure images focusable for zooming
let figureImages = document.querySelectorAll ("figure img");
figureImages.forEach (function (figureImage) {
  figureImage.setAttribute ("tabindex", -1);
  document.addEventListener ('mousedown', event => {
    if (document.activeElement === figureImage) {
      // Prevent it from triggering on focusIn
      setTimeout (function () {
        document.activeElement.blur ();
      }, 100);
    }
  });
});

</script>