Whew...well, this is what you get when you ask opinions of other programmers, I suppose!
Personally, I don't mind the drop-downs. On both sides, I think the tone of conversation could improve somewhat though.
Micheal_Morris, I know that you've put in a lot of time on this, so I can understand being defensive.
Some of my concerns would be some of the same voiced by DanMcS.
#1 - I'd agree on this one. Javascript can be a fickle friend. But, it seems that you've taken browser compatibility into account, so you should be fine.
#2 - Again, I'd agree to an extent. It used to be the case that crawlers had trouble indexing your site without hyperlinks (which was the reason why you used to see menu items at the top as well as regular hyperlinks at the bottom of a page). But, I don't believe this to be the case anymore. I'm not sure about DanMcS's argument regarding a handicapped person though...that might be correct.
#3 - This is the last one I'll comment on. I agree with the need for simplicity, but I think that drop-downs are an acceptable part of a user interface. I don't use them often, but I do use them to organize an abundance of additional links...