There has been a lot of questions that I've been answering via PM, but let me address them here.
First, yes those buttons are gone... for now. Most of the changes have been at the request of our new ad network, which have required more ad spots in order for our site to be considered for inclusion. I know, it's not what everyone wants, but bear with us as we just finished their "required" updates and are now working on compromises and "fixes" that will bring back functionality y'all like (the back to the top/bottom buttons being one of them). I'm also working with Wes on the minimal-ad membership option, and once that is set those members will only see the top banner ad and will have full screen layout on the forum and topic pages again.
We're working on it, but be patient as we try to strike a balance between revenue needed to keep the doors open and happy Frog Fans.