[vbmechanic]

The javascript itself would be small, but it would be up to your graphic artist to make the rollover images small enough to handle. You could also cut that purple spacescape into two, with a smaller lower part that would rollover and change images.. making the load time less. As it is, those buttons are next to meaningless for most people without labels.

Or nevermind the purple spacescape, and use the little blue screen as the label readout.