I didn't see this in the manual and I haven't seen it mentioned here, but I apologize in advance if it is already common knowledge. The scroll wheel on the BJ by default scrolls vertically. If you want to scroll horizontally, just hold down the Fn key while using the scroller. Its really useful when you're viewing wide websites in the default view or any other time that you need to scroll horizontally in a quicker fashion than the d-pad allows.