As I wrote in the other thread, they basically are optional: just remove the scrollpanecontrol from the zoom.asul file

They might be smaller on screen, yes, but not than the containing scrollbar (which per default - see megazine.asul - has a certain margin to the borders). Anyway, I don't see this as a real issue.
By "search window", do you mean the "goto page" text field? Well, if you don't like it, you can always disable it via book@navbarpagenumbersinbox (i.e.
<book navbarpagenumbersinbox="false">).
Thanks for the feedback!
