DVDFab and standard shortcut keys

I tried to use dvdfab on a computer with no working mouse connected, but couldn’t figure out how to do that. Is it only me or does dvdfab require a mouse to be able to use it? Using the tab key to change the focus between the fields seems to almost work, but except from that i couldn’t find any working shortcut keys. I couldn’t even figure out how to close the application since ALT-F4 didn’t work.

I guess it’s not a big deal, but would be nice to be able to use the application without a mouse connected.