Issue with site on Windows Phone

I know this isn't really something I expect to be fixed, but I cannot get on BA on my Windows Phone (Lumia 920). Any time I click something like the menu, the sub-menus will appear for a split second, and then will disappear completely. Same with trying to click my username. The only thing I can do is the search, which doesn't do me much good when I'm trying to read my messages.

Cheers!