Adding easing to my scroller

I’m somewhat new to actionscripting but a fairly fast learner. Work wants me to create to a scroller like the one I’ve attached but with an elastic efftect to it.

I’ve looked at some others examples and some tutorials but was somewhat lost so I just sat down and tried coming up with a ghetto way. I the very basics done but im wondering if there’s a much better way of doing this especially if I wish to do some easing.

link to fla