Horizontal Scrolling with mouse ball???

I’m wondering that nobody requests this feature, but I’m missing it so much, since I’m used to it from many other Apple-apps: horizontal scrolling with the mouseball.

I’m using an Apple bt mighty mouse but I just can scroll vertical by ball in big (or zoomed in) waveforms, horizontally I have to scroll with the bars.

Is this so difficult to implement or did just nobody miss this feature?

Greetings, Bernie

Audacity 1.3.x

Mouse wheel = vertical scroll
SHIFT + Mouse wheel = horizontal scroll
CTRL + Mouse wheel = Zoom in/out