Programmatically collapse PubMatic space in empty div if no ads are inside

PubMaticCollapse.html

<script type="text/javascript">
  // Site Data
  var pubId=;
	var siteId=;
	var kadId=;
	var kadwidth=;
	var kadheight=;
	var kadtype=1;
	var kadpageurl= "";

  function getSlotElement(el) {
    while (el) {
      if (el.className && (el.className.search("ad") !== -1)) return el;
      el = el.parentElement;
    }
  }
  var pmExtHlp = {
    empty: true,
    height: kadheight,
    currentSlot: getSlotElement(window.frameElement)
  };
  if (pmExtHlp.currentSlot) {
    pmExtHlp.currentSlot.orgInsertBefore = pmExtHlp.currentSlot.insertBefore;
    pmExtHlp.currentSlot.insertBefore = function(){};
    pmExtHlp.currentSlot.style.height = "0";
    pmExtHlp.currentSlot.style.margin = "0";
    pmExtHlp.currentSlot.style.padding = "0";
  }
</script>
<script type="text/javascript" src="https://ads.pubmatic.com/AdServer/js/showad.js"></script>
<script type="text/javascript">
(function() {
  function adjustIframeHeight(h) {
    if (window.frameElement) {
      window.frameElement.height = h;
      window.frameElement.style.height = h + "px";
    }
  }
  var els = document.getElementsByClassName("PubAdAI");
  for (var i = 0; i < els.length; i++) {
    for (var y = 0; y < els[i].childNodes.length; y++) {
      if (els[i].childNodes[y].clientHeight) { pmExtHlp.empty = false; }
      if (els[i].childNodes[y].nodeType === 8) {
        if (els[i].childNodes[y].data.search("PubMatic ad tag") !== -1) {
          var s = els[i].childNodes[y].data.match(/[0-9]{2,}x[0-9]{2,}/);
          if (s) { pmExtHlp.height = s[0].split("x")[1]; }
        }
      }
    }
  }
  adjustIframeHeight(pmExtHlp.height);
  if (pmExtHlp.currentSlot && !pmExtHlp.empty) {
    pmExtHlp.currentSlot.style.height = "";
    pmExtHlp.currentSlot.style.margin = "";
    pmExtHlp.currentSlot.style.padding = "";
    pmExtHlp.currentSlot.orgInsertBefore(adLabelEl, pmExtHlp.currentSlot.firstChild);
  }
})();
</script>