next and previous links fixed up
diff --git a/user_guide/libraries/benchmark.html b/user_guide/libraries/benchmark.html
index 0f447cd..7176d05 100644
--- a/user_guide/libraries/benchmark.html
+++ b/user_guide/libraries/benchmark.html
@@ -189,7 +189,7 @@
 

 <div id="footer">

 <p>

-Previous Topic:&nbsp;&nbsp;<a href="../general/alternative_php.html">Alternative PHP Syntax</a>

+Previous Topic:&nbsp;&nbsp;<a href="../general/security.html"> Security</a>

 &nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

 <a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

 <a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;