diff --git a/h5p.classes.php b/h5p.classes.php
index 57cf6ff..6c216e1 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -1643,6 +1643,7 @@ class H5PCore {
     'js/h5p-event-dispatcher.js',
     'js/h5p-x-api-event.js',
     'js/h5p-x-api.js',
+    'js/h5p-content-type.js',
   );
   public static $adminScripts = array(
     'js/jquery.js',
diff --git a/js/h5p-content-type.js b/js/h5p-content-type.js
new file mode 100644
index 0000000..3a56c72
--- /dev/null
+++ b/js/h5p-content-type.js
@@ -0,0 +1,37 @@
+/**
+ * H5P.ContentType is a base class for all content types. Used by newRunnable()
+ *
+ * Functions here may be overridable by the libraries. In special cases,
+ * it is also possible to override H5P.ContentType on a global level.
+ * */
+H5P.ContentType = function (standalone, library) {
+
+  function ContentType() {};
+
+  // Inherit from EventDispatcher.
+  ContentType.prototype = new H5P.EventDispatcher();
+
+  /**
+   * Is library standalone or not? Not beeing standalone, means it is
+   * included in another library
+   *
+   * @method isStandalone
+   * @return {Boolean}
+   */
+  ContentType.prototype.isStandalone = function () {
+    return standalone;
+  };
+
+  /**
+   * Returns the file path of a file in the current library
+   * @method getLibraryFilePath
+   * @param  {string} filePath The path to the file relative to the library folder
+   * @return {string} The full path to the file
+   */
+  ContentType.prototype.getLibraryFilePath = function (filePath) {
+    var libraryObject = H5P.libraryFromString(library.library);
+    return H5P.getLibraryPath(libraryObject.machineName + '-' + libraryObject.majorVersion + '.' + libraryObject.minorVersion) + '/' + filePath;
+  };
+
+  return ContentType;
+};
diff --git a/js/h5p.js b/js/h5p.js
index a57fe64..ea48c4e 100644
--- a/js/h5p.js
+++ b/js/h5p.js
@@ -135,7 +135,7 @@ H5P.init = function (target) {
     });
 
     // Create new instance.
-    var instance = H5P.newRunnable(library, contentId, $container, true);
+    var instance = H5P.newRunnable(library, contentId, $container, true, {standalone: true});
 
     // Check if we should add and display a fullscreen button for this H5P.
     if (contentData.fullScreen == 1 && H5P.canHasFullScreen) {
@@ -724,6 +724,11 @@ H5P.newRunnable = function (library, contentId, $attachTo, skipResize, extras) {
     extras.previousState = library.userDatas.state;
   }
 
+  // Makes all H5P libraries extend H5P.ContentType:
+  var standalone = extras.standalone || false;
+  // This order makes it possible for an H5P library to override H5P.ContentType functions!
+  constructor.prototype = H5P.jQuery.extend({}, H5P.ContentType(standalone, library).prototype, constructor.prototype);
+
   var instance;
   // Some old library versions have their own custom third parameter.
   // Make sure we don't send them the extras.
@@ -759,6 +764,7 @@ H5P.newRunnable = function (library, contentId, $attachTo, skipResize, extras) {
   }
 
   if ($attachTo !== undefined) {
+    $attachTo.toggleClass('h5p-standalone', standalone);
     instance.attach($attachTo);
     H5P.trigger(instance, 'domChanged', {
       '$target': $attachTo,