edit

static/videoOverlay.js

@@ -28,8 +28,11 @@ function getVideoOverlay(page) {
                   + image.left + "px;";
                 div.appendChild(playButton(image.height/1.5));
                 div.onclick = function(event) {
+                    event.preventDefault();
+                    event.stopPropagation();
                     div.innerHTML =  videoOverlay[page][id];
                     div.style.opacity = 1;
+                    return false;
                 };
                 this.div.appendChild(div);
             }

static/viewer.js

@@ -2716,6 +2716,7 @@ document.addEventListener('DOMContentLoaded', function webViewerLoad(evt) {
 
   var file = params.file || DEFAULT_URL;
 
+  document.getElementById('openFile').setAttribute('hidden', 'true');
   if (!window.File || !window.FileReader || !window.FileList || !window.Blob) {
     document.getElementById('openFile').setAttribute('hidden', 'true');
   } else {