diff --git a/js/h5p-resizer.js b/js/h5p-resizer.js
index 6318fc8..bbfb009 100644
--- a/js/h5p-resizer.js
+++ b/js/h5p-resizer.js
@@ -1,8 +1,9 @@
 // H5P iframe Resizer
 (function () {
-  if (!window.postMessage || !window.addEventListener) {
+  if (!window.postMessage || !window.addEventListener || window.h5pResizerInitialized) {
     return; // Not supported
   }
+  window.h5pResizerInitialized = true;
 
   // Map actions to handlers
   var actionHandlers = {};
@@ -47,6 +48,11 @@
   actionHandlers.prepareResize = function (iframe, data, respond) {
     responseData = {};
 
+    // Create spaceholder and insert after iframe.
+    var spaceholder = document.createElement('div');
+    spaceholder.style.height = (iframe.clientHeight - 1) + 'px';
+    iframe.parentNode.insertBefore(spaceholder, iframe.nextSibling);
+
     // Reset iframe height, in case content has shrinked.
     iframe.style.height = '1px';
 
@@ -64,6 +70,7 @@
   actionHandlers.resize = function (iframe, data, respond) {
     // Resize iframe so all content is visible.
     iframe.style.height = data.height + 'px';
+    iframe.parentNode.removeChild(iframe.nextSibling);
   };
 
   /**
diff --git a/js/h5p-x-api.js b/js/h5p-x-api.js
index 14cbb7e..87a6267 100644
--- a/js/h5p-x-api.js
+++ b/js/h5p-x-api.js
@@ -3,10 +3,6 @@ var H5P = H5P || {};
 // Create object where external code may register and listen for H5P Events
 H5P.externalDispatcher = new H5P.EventDispatcher();
 
-if (H5P.isFramed && H5P.externalEmbed === false) {
-  H5P.externalDispatcher.on('*', window.top.H5P.externalDispatcher.trigger);
-}
-
 // EventDispatcher extensions
 
 /**
diff --git a/js/h5p.js b/js/h5p.js
index 42b28f9..b77a113 100644
--- a/js/h5p.js
+++ b/js/h5p.js
@@ -67,7 +67,7 @@ H5P.init = function (target) {
 
   // Determine if we can use full screen
   if (H5P.canHasFullScreen === undefined) {
-    H5P.canHasFullScreen = (H5P.isFramed && H5P.externalEmbed !== false) ? (document.fullscreenEnabled || document.webkitFullscreenEnabled || document.mozFullScreenEnabled || document.msFullscreenEnabled) : true;
+    H5P.canHasFullScreen = (H5P.isFramed && H5P.externalEmbed !== false) ? ((document.fullscreenEnabled || document.webkitFullscreenEnabled || document.mozFullScreenEnabled || document.msFullscreenEnabled) ? true : false) : true;
   }
 
   // H5Ps added in normal DIV.
@@ -111,7 +111,7 @@ H5P.init = function (target) {
     var instance = H5P.newRunnable(library, contentId, $container, true);
 
     // Check if we should add and display a fullscreen button for this H5P.
-    if (contentData.fullScreen == 1) {
+    if (contentData.fullScreen == 1 && H5P.canHasFullScreen) {
       H5P.jQuery('<div class="h5p-content-controls"><div role="button" tabindex="1" class="h5p-enable-fullscreen" title="' + H5P.t('fullscreen') + '"></div></div>').prependTo($container).children().click(function () {
         H5P.fullScreen($container, instance);
       });
@@ -1395,7 +1395,7 @@ H5P.cssLoaded = function (path) {
  * @returns {array} The passed array is returned for chaining.
  */
 H5P.shuffleArray = function (array) {
-  if (! array instanceof Array) {
+  if (!(array instanceof Array)) {
     return;
   }
 
@@ -1747,12 +1747,16 @@ H5P.createTitle = function(rawTitle, maxLength) {
             if (state !== undefined) {
               // Async is not used to prevent the request from being cancelled.
               H5P.setUserData(instance.contentId, 'state', state, {deleteOnChange: true, async: false});
-
             }
           }
         }
       });
     }
+
+    // Relay events to top window.
+    if (H5P.isFramed && H5P.externalEmbed === false) {
+      H5P.externalDispatcher.on('*', window.top.H5P.externalDispatcher.trigger);
+    }
   });
 
 })(H5P.jQuery);