diff --git a/main.html b/main.html
index 885b4f4401..b90a98e3eb 100644
--- a/main.html
+++ b/main.html
@@ -2,6 +2,7 @@
 <html>
 <head>
 <title> MITX 6.002 </title> 
+<link rel="stylesheet" href="/static/lib/jquery.treeview.css" type="text/css" media="all" />
 <link rel="stylesheet" href="/static/css/theme.css" type="text/css" media="all" />
 <link rel="stylesheet" href="/static/css/local.css" type="text/css" media="all" />
 <link href="/static/css/jquery-ui-1.8.16.custom.css" rel="stylesheet" type="text/css"/>
@@ -9,6 +10,7 @@
 <script type="text/javascript" src="/static/lib/jquery-1.6.2.min.js"></script>
 <script type="text/javascript" src="/static/lib/jquery-ui-1.8.16.custom.min.js"></script>
 <script type="text/javascript" src="/static/lib//swfobject/swfobject.js"></script>
+<script type="text/javascript" src="/static/lib/jquery.treeview.js"></script>
 <script type="text/javascript" src="/static/js/video_player.js"></script>
 <script type="text/javascript" src="/static/js/schematic.js"></script>
 <style type="text/css">#slider { margin: 10px; }</style>
