Facebook don't work in social Apy

I do not understand why but facebook does not work .
Can you help me?
The other buttons work , but no facebook .
Yet there is code.
Can you help me?
The web site is http://hoteleden.info/it/ristorante-ach ... sione.html

MAX

Hi

Can You please put those buttons back to Your site, so I'll be able to see what is going on ?