I am trying to find a reliable way to determine how many pixels the
scroll bar has moved when the user clicks on the scroll up/down
buttons. It seems to be different on every browser and even different
on the same browser on different operating systems. Ideally what I
would like is a way to either set this value or to determine what it
is. My goal is to map the scroll movements from one div onto another
such that each up/down click on the first div translates into a
specific delta on the second div that I define. Any help would be
greatly appreciated!
