Reza,
I'm getting a 500 error when I try to go to that page (or any other page than your home page, just so you know).
Without being able to see it, I can't be sure this is the right answer.. but what you likely want to do is re-order your content plugins. If the Social Network buttons is from another content plugin, simply make that ordered higher (so it'd show up above) the JFBConnect Content plugin.
Hope that helps, but if not, when you get the page working, just let us know and we'll see if there's another solution we can provide.
Thanks,
Alex