diff --git a/user_guide/libraries/unit_testing.html b/user_guide/libraries/unit_testing.html
index 5ca982f..e2f1d11 100644
--- a/user_guide/libraries/unit_testing.html
+++ b/user_guide/libraries/unit_testing.html
@@ -10,12 +10,7 @@
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-	myHeight = new fx.Height('nav', {duration: 400});
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+<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' />