mkamandy,
I first have to say that I find your photographs inspiring. Thank you for these images, really.
Down to your problem:
This inline styling is done by jQuery, when calling the show/hide methods. This is not something I would really venture into trying to modify, but after looking a bit at your site, the jQuery version you are using is 1.1.2 (probably bundled with indexhibit). You could possibly try to update it to a newer version (I think it's up to 1.2.6 now... or up) in your site folder (ndxz-studio/site/js/jquery.js), but I can't guaranty that the method for hiding/showing items is different...
Let me know if this help, else, rewriting parts of the expandingMenus.js would probably be required... I could probably have a go at this since I think indexhibit is in need of a better expanding menu script (for one, the speed should be based on how many items are present in the menu, not a fixed speed and that 0.9999 opacity is indeed annoying...)
I'll be waiting for your feedback before going further.