James,
The JFBConnect javascript file (jfbconnect.js) doesn't seem to be loading on any of your pages. I'm not sure why that is, but it looks like you have something that's trying to compress your Javascript files. However, the link that's included for the compressed Javascript files doesn't work:
http://www.haitiprobiz.com/index.php?jat3action=gzip&jat3type=js&jat3file=t3-assets%2Fjs02883.js?v=2
Not sure why that doesn't work, but when you figure that out, I think your login issues will be solved.
Good luck,
Alex