diff --git a/static/videoOverlay.js b/static/videoOverlay.js
index 9f7be5c..fd4502f 100644
--- a/static/videoOverlay.js
+++ b/static/videoOverlay.js
@@ -1,7 +1,7 @@
 window.addEventListener('message', function(event) {
-    if(event.origin != 'null' && event.data) {
+    if (event.origin != 'null' && event.data) {
         var data = JSON.parse(event.data);
-        if(data.event == 'close') {
+        if (data.event == 'close') {
             var e = document.getElementById(data.id);
             Array.prototype.forEach.call(e.parentElement.getElementsByClassName('button'), function(e) {
                 e.style.display = 'block';
@@ -67,15 +67,17 @@ function getVideoOverlay(page) {
                     img.onclick = function(event) {
                         event.preventDefault();
                         event.stopPropagation();
-                        if(!videoOverlay[page]) {
+                        if (!videoOverlay[page]) {
                             videoOverlay[page] = {}
                         }
-                        if(! videoOverlay[page][id]) {
-                             videoOverlay[page][id] = '';
+                        if (!videoOverlay[page][id]) {
+                            videoOverlay[page][id] = '';
                         }
                         console.log('EDIT');
-                        var message = 'Please enter a pan.do/ra video URL, like\nhttp://pad.ma/A/editor/00:00:00,00:01:00,00:02:00';
-                        var url = prompt(message, videoOverlay[page][id]);
+                        var message = 'Please enter a pan.do/ra video URL, like\n'
+                                + 'http://pad.ma/A/editor/00:00:00,00:01:00,00:02:00'
+                                + (videoOverlay[page][id] ? '\n\nTo remove the video, just remove the URL.' : ''),
+                            url = prompt(message, videoOverlay[page][id]);
                         if (url !== null) {
                             videoOverlay[page][id] = url;
                             saveVideoOverlay();