GAM360 Responsive Header

<script async='async' src='https://www.googletagservices.com/tag/js/gpt.js'></script>
<script>
  var googletag = googletag || {};
  googletag.cmd = googletag.cmd || [];
</script>
<script>



 googletag.cmd.push(function() {



   googletag.pubads().enableSingleRequest();
   googletag.pubads().setTargeting('URL', window.location.pathname);
   googletag.pubads().disableInitialLoad();
    googletag.pubads().enableLazyLoad({
    fetchMarginPercent: 100,  // Fetch slots within 5 viewports.
    renderMarginPercent: 100,  // Render slots within 2 viewports.
    mobileScaling: 2.0  // Double the above values on mobile.
  });
     googletag.enableServices();
 });

 var aiNextSlotId = 1;

 function aiGenerateNextSlotName() {
   var id = aiNextSlotId ++;
   return 'ai-slot-' + id;
 }

function aiLoadBlock(adUnitPath, size, unit) {
  var slotName = aiGenerateNextSlotName();

  document.getElementById ("ai-block").id = slotName;
  googletag.cmd.push(function() {
  //console.log(unit);
  if (unit == "LDBD"){
  //console.log(unit);
  var mapping = googletag.sizeMapping().
  addSize([992, 0], [728, 90]). //desktop
  addSize([768, 0], [728, 90]). //tablet
  addSize([0, 0], [320, 50]). //other
  build();
  }
  else if (unit == "TPBT"){
  //console.log(unit);
  var mapping = googletag.sizeMapping().
  addSize([992, 0], [[970, 90], [970, 250], [728, 90]]). //desktop
  addSize([768, 0], [728, 90]). //tablet
  addSize([0, 0], [[320,50],[300,100]]). //other
  build();
  }
  else if (unit == "DYNA"){
  //console.log(unit);
  var mapping = googletag.sizeMapping().
  addSize([992, 0], [[728,90],[300,250],[336,280],[468,60], [300,600],[320,50],[300,100]]). //desktop
  addSize([768, 0], [[728,90],[300,250],[336,280],[468,60], [300,600],[320,50],[300,100]]). //tablet
  addSize([0, 0], [[300,250],[336,280], [300,600],[320,50],[300,100]]). //other
  build();
  }
  else if (unit == "SIDE"){
  //console.log(unit);
  var mapping = googletag.sizeMapping().
  addSize([0, 0], [[300,250],[336,280],[300,600],[320,50],[300,100]]).
  build();
  }
   else if (unit == "FOOT"){
  //console.log(unit);
  var mapping = googletag.sizeMapping().
  addSize([0, 0], [300,250]).
  build();
  }
    var slot = googletag.defineSlot(adUnitPath, size, slotName).
    defineSizeMapping(mapping).
      addService(googletag.pubads());
    googletag.display(slotName);
    googletag.pubads().refresh([slot]);
  });
}
</script>