diff --git a/doc/header.html b/doc/header.html
index 364b0bc..bfaed76 100644
--- a/doc/header.html
+++ b/doc/header.html
@@ -53,15 +53,25 @@ $extrastylesheet
 </table>
 </div>
 <!--END TITLEAREA-->
-<body bgcolor="#ffffff"> 
+<body bgcolor="#ffffff">
 <table width="100%">
   <tr>
-    <td width="40%" align="left" valign="center">
+    <td width="30%" align="left" valign="center">
       <a href="https://github.com/open-source-parsers/jsoncpp">
       JsonCpp project page
       </a>
     </td>
-    <td width="40%" align="right" valign="center">
+    <td width="20%" align="center" valign="center">
+      <a href="hierarchy.html">
+        Classes
+      </a>
+    </td>
+    <td width="20%" align="center" valign="center">
+      <a href="namespace_json.html">
+        Namespace
+      </a>
+    </td>
+    <td width="30%" align="right" valign="center">
       <a href="http://open-source-parsers.github.io/jsoncpp-docs/doxygen/">JsonCpp home page</a>
     </td>
   </tr>
