diff --git a/index.php b/index.php
index cd5b59a..ae98793 100644
--- a/index.php
+++ b/index.php
@@ -48,7 +48,7 @@ function hideShow(which)
     </header>
 
     <section id="introduction">
-  <a id="hideShow" href="#"><img id="arrowHide"
+  <a id="hideShow" href=""><img id="arrowHide"
   src="topArrow.png" alt="icon"/></a>
 
   <script type="text/javascript">