--- a/ssi/menu.html
+++ b/ssi/menu.html
@@ -17,6 +17,21 @@
   _uacct = "UA-630855-2";
   urchinTracker();
 </script>
+<div id="googleplusone">
+
+<!-- google+ button on the right-->
+<!-- Place this tag where you want the +1 button to render. -->
+<g:plusone size="tall" href="http://hugin.sourceforge.net"></g:plusone>
+
+<!-- Place this tag after the last +1 button tag. -->
+<script type="text/javascript">
+  (function() {
+    var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
+    po.src = 'https://apis.google.com/js/plusone.js';
+    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
+  })();
+</script>
+</div>
 
 <div id="header"><img id="logo" alt="logo" src="/css/hugin-shadow.png"/></div>
 <!-- start actual menu bar -->