added iframe detection (to remove the buton

sites/all/themes/gui/jee/js/jee.js

@@ -20,8 +20,8 @@ jQuery(document).ready(function($) {
       _lastDraw = new Date,
       _fps,
       _$nav_cursor,
-      _History = window.History;
-
+      // _History = window.History;
+      _isInIFrame = window.location !== window.parent.location;
 
   var _$body = $('body'),
       _is_mobile = $('html').is('.mobile'),
@@ -122,9 +122,11 @@ jQuery(document).ready(function($) {
   };
 
   function initChapterWrapper(){
-    $('<div id="home-btn">')
-      .on("click", onCloseChapterWrapper)
-      .appendTo(_$chapter_wrapper);
+    if(!_isInIFrame){
+      $('<div id="home-btn">')
+        .on("click", onCloseChapterWrapper)
+        .appendTo(_$chapter_wrapper);
+    }
   };
 
   function onCloseChapterWrapper(e){