diff --git a/user_guide/nav/nav.js b/user_guide/nav/nav.js
index ee00d96..8d19557 100644
--- a/user_guide/nav/nav.js
+++ b/user_guide/nav/nav.js
@@ -82,6 +82,7 @@
'<li><a href="'+base+'libraries/parser.html">Template Parser Class</a></li>' +
'<li><a href="'+base+'libraries/unit_testing.html">Unit Testing Class</a></li>' +
'<li><a href="'+base+'libraries/uri.html">URI Class</a></li>' +
+ '<li><a href="'+base+'libraries/user_agent.html">User Agent Class</a></li>' +
'<li><a href="'+base+'libraries/validation.html">Validation Class</a></li>' +
'<li><a href="'+base+'libraries/xmlrpc.html">XML-RPC Class</a></li>' +
'<li><a href="'+base+'libraries/zip.html">Zip Encoding Class</a></li>' +
@@ -105,7 +106,6 @@
'<li><a href="'+base+'helpers/text_helper.html">Text Helper</a></li>' +
'<li><a href="'+base+'helpers/typography_helper.html">Typography Helper</a></li>' +
'<li><a href="'+base+'helpers/url_helper.html">URL Helper</a></li>' +
- '<li><a href="'+base+'helpers/user_agent_helper.html">User Agent Helper</a></li>' +
'<li><a href="'+base+'helpers/xml_helper.html">XML Helper</a></li>' +
'</ul>' +