diff --git a/user_guide/index.html b/user_guide/index.html
index 3d7f7fd..e944de7 100644
--- a/user_guide/index.html
+++ b/user_guide/index.html
@@ -10,12 +10,7 @@
 <script type="text/javascript" src="nav/nav.js"></script>
 <script type="text/javascript" src="nav/prototype.lite.js"></script>
 <script type="text/javascript" src="nav/moo.fx.js"></script>
-<script type="text/javascript">
-window.onload = function() {
-	myHeight = new fx.Height('nav', {duration: 400});
-	myHeight.hide();
-}
-</script>
+<script type="text/javascript" src="nav/user_guide_menu.js"></script>
 
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta http-equiv='expires' content='-1' />