Flux3,
First off, no, we hadn't seen that Functional Options ability. I'm not sure when they added that, but it wasn't available a few months ago when we saw last. As for adding it, it's something we'll definitely be investigating and putting in. If you'd like to add a few questions to *all* of your Apply buttons, it should actually be pretty easy to modify some of our code so that all butons show it. If you need it parameterized, so that some Apply buttons have one set of questions, and other buttons have different options, that gets more difficult. Let us know what you're looking for, and we can gladly help.
As for the button not showing on Firefox, that can be caused by a few things. Would it be possible to post, or Private Message, a URL that we can see/test the button on to help diagnose the problem? You can PM me if you want to keep your site private by hitting the arrow under my picture (<----) and hitting the mail icon.
Thanks,
Alex