Suggestion: A way to find which direction was selected

[KarlEyeWeb]

When a visitor uses the controls I need a way to add a "current" class to the middle slide on the carousel.

I've managed to do this, however, I just add the class to next() so if the user chooses to go to a previous slide it doesn't work correctly, obviously, so it would be nice if there was a way to find out which direction the user has chosen onBeforeSlide so we can add the class to the correct slide accordingly.