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                <!-- define a div element that will hold the 360 HD Viewer -->
<div id="put-viewer-here"></div>
  <input class='max-zoom' type="button" value="4k" onclick="changeZoom('4k')" />
  <input class='max-zoom' type="button" value="2k" onclick="changeZoom('2k')" />



                #put-viewer-here {
  height: 450px
/*Override style for the viewer tooltip text */
  color:#B2A2D3 !important;

  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 1px;
  background: #202632;
  color: #ccc;
  padding: 10px 10px;
  cursor: pointer;


                // declare the variable that will hold the 360 HD Viewer instance
var viewerInstance = null;
// the opts object should hold the start properties of the 360 HD Viewer
var opts = {  
  'containerID': 'put-viewer-here',
  'productCode': 'EMMA_ARMCHAIR',
  'accountID': 4965,
  'features': ["LEGS", "METAL_LEGS", "UPHOLSTERY", "SEED"],
  'thumbs': false,
  'fullscreen': false,
  'progressBar': false,
// make sure the cylindo framework has been "installed"
if (cylindo) {
  // do not instantiate the viewer until the framework reports ready.
  cylindo.on('ready', function () {
    // create the instance
    viewerInstance = cylindo.viewer.create(opts);
//You even can modify the  maxZoom property value at runtime
function changeZoom(zoomValue) {
  if (zoomValue) {
    if (viewerInstance) {
      viewerInstance.update('maxZoom', zoomValue);
      console.log('maxZoom', zoomValue);
    else {
      console.log('No instance defined');
  else {
    console.log('Zoom value is null');