My XML didn't show HTML in infowindow

Using MySQL and PHP with Google Maps

XML Reference:

<marker id="1" 
title="ABC" 
description="<img src="http://ift.tt/2p4RkK1">
<br/>description about 2nd point. <br/>
<a href="http://ift.tt/2oTVjgl">Read More</a>" 
lat="-33.869843" 
lng="-151.225769" 
type="bar" 
district="xyz" />

Infowindow supports my HTML, show my title with image and a link to my page:

   downloadUrl('http://ift.tt/2p4Nm4e
               /json/mapmarkers2.xml', function(data) {
        var xml = data.responseXML;
        var markers = xml.documentElement.getElementsByTagName('marker');
        Array.prototype.forEach.call(markers, function(markerElem) {

Portion to be edit

          var id = markerElem.getAttribute('id');
          var name = markerElem.getAttribute('name');
          var details = markerElem.getAttribute('details');
          var type = markerElem.getAttribute('type');
          var point = new google.maps.LatLng(
              parseFloat(markerElem.getAttribute('lat')),
              parseFloat(markerElem.getAttribute('lng')));

Type markers are in different colours

          var text = document.createElement('text');
          text.textContent = address
          infowincontent.appendChild(text);
          var icon = customLabel[type] || {};
          var marker = new google.maps.Marker({
            map: map,
            position: point,
            label: icon.label
          });
          marker.addListener('click', function() {
            infoWindow.setContent(infowincontent);
            infoWindow.open(map, marker);

Please help me to complete my assignment. Regards