can anybody take a look at this site?

I am mainly concerned about the dark footer.

For sure there is one problem on iPhones with iOS 5.1.1. The footer seems to be broken.
However somebody told me that also in FireFox the footer seems to be broken, but I couldn't reproduce it.

With IE9, latest Chrome and latest FF it seems to be working.

Can anybody see something wrong? With what browser version?