Thanks for checking it out! It is working fine for me on Firefox. Could you provide more information of why it is not working well for you on Firefox?
Not working for me either. All I can see is the image and some text but nothing happens. Firefox 30 on Ubuntu 14.04
Strange. It is working fine on my linux, mac and windows pcs with Firefox 30. I don't think it is my code since it is really simple (10 lines of html and some css). It might be an issue google platform.js.