Modal Window and ios 5.1 Simulator
Hi, 
I just create a simple web app and I added a modal link...
It's ok on my chrome and on iOS 6.x simulator but If i open my web app on ios 5.1 iOS simulator the modal window refuse to open.

 I took a look at the Modal script and classList method works correctly... it add "active" class properly but modal windows doesn't work...maybe it's a css problem?

THANKS!
