bindings to move mouse cursor?

Hi!

I have been searching a lot but no luck - is it possible to have some
key bindings that move the mouse cursor (e.g. a given number of pixels
in a given direction) ?

I think that would be a very useful way to switch to the frame you
want, just move the cursor until it's over that frame, should normally
only take a couple of keystrokes. The ioncore.goto_next functions
sometimes don't do exactly what you would want, depending on the
splitting order and such.

Thanks,
Radu