If you take a look at the javascript, there's an event handler that looks at different keycodes and assigns them to actions. PageUp, PageDown, Up, Down, Left, R

If you take a look at the javascript, there's an event handler that looks at different keycodes and assigns them to actions. PageUp, PageDown, Up, Down, Left, Right, j, and k are all assigned. It should be simple to attach handlers for mouse and gesture events too, and just call the same actions.