Works for me right now. I just went into it, clicked on the "investigate" tab, and the "submit" button at the bottom, with the default values. I'm not sure what could be causing the problem.
Interesting. This morning it will work in Firefox, but not Safari. In Safari, it won't go to any of the tabs, although it will take "submit". Yesterday I was trying different computers, but don't know if I tried changing browsers. Thanks!