There's 2 other inclusions of the Facebook Javascript on the page you linked to and they are likely conflicting with JFBConnect. The first looks to be coming from your Gavick template. In the template settings, there is a setting for "Enable Social integration" or something like that, you'll want to disable it. Especially any settings for logging in with Facebook, if they exist.
The other inclusion looks to be coming from Ohanah. I think it's the FB Like button on the page. I'd recommend disabling that and, if you want those social buttons, use the ones from JFBConnect instead.
I hope that helps, but if you have any questions, just let me know.
Thanks,
Alex