Hi,
I wonder if some kind person can give me some advice on the issue of accessibility and custom scrollbars.
I very much like the look of scrollbars that use images and javascript to scroll a div as in this site http://www.annaternheim.com/# for eg.

Am I right in thinking that this site would be inaccessible to those that can't use a mouse or could an additional script be added to enable the div to be scrolled using the keyboard?

Thanking you in anticipation.