System Preferences > General > Show scroll bars:
Select "Automatically based on mouse or trackpad"
This doesn't answer his question. He asked how to get the ARROWS back, and so do I, so do many people.
Currently Being ModeratedMar 19, 2013 8:00 AM (in response to mistergreenlee)
I've done this; in fact, I found that my settings were ALREADY as prescribed by dominic23; however, I still don't have the arrows, and that's what this is all about. The scroll bar by itself is just not satisfactory. Do you now have the arrows back?