first of all: i love rockbox!

but there is only one thing i can't figure out, if it's possible: to inverse the wheel?
i mean it should be possible, because, when i switch the screen to upside down, the wheel is (for my natural feeling) correct, but the screen not.

so, is it possible in any way to only inverse the wheel?
to explain why i want to inverse the wheel. normally i hold my player (sansa) in the right hand. the thumb is on the left side of the wheel. when i move the wheel in this position down, the scrollbar moves up ... that's the reason why it would be cool to have a option to inverse the wheel.