One more try.
diff --git a/documentation/contents/index.html b/documentation/contents/index.html
index 21b1442..9a15de4 100644
--- a/documentation/contents/index.html
+++ b/documentation/contents/index.html
@@ -1,3 +1,4 @@
+<div id="maincontent">
 <div class="navheader">
 <table summary="Navigation header" width="100%">
 <tr>
@@ -436,4 +437,5 @@
 <td valign="top" align="left" width="40%">&nbsp;</td><td align="center" width="20%">&nbsp;</td><td valign="top" align="right" width="40%">&nbsp;Chapter&nbsp;1.&nbsp;Introduction</td>
 </tr>
 </table>
+</div>
 </div>
\ No newline at end of file