When I run the Autotune -> Error Check tool on your page, it's showing that it can't find the JFBCSystem plugin. Looking at the HTML on your page, I'd agree. I'm not seeing the jfbconnect.js Javascript file included or any of the other code that JFBConnect would need to insert into the page for things to work.
Can you double check that you've properly enabled our System plugin? Hopefully, that will get you going.
Additionally, Joomla 2.5.8 is *very* old and has numerous security issues and bugs. I'm not saying any of those is causing this problem, but I'd highly recommend that you upgraded to the latest version of Joomla (which is v2.5.20 at the time of this writing). Joomla has a built-in upgrader system and it should be a pretty simple process. Just some advice.
I hope that helps, but if you need anything else, just let me know.
Thanks,
Alex