Missing up/down arrows in web editor's files listing scrollbar

When displaying a longer-than-normal list on the WWW it's standard procedure to add a scrollbar to the right. That scrollbar always includes a couple of small arrow buttons, one at the top, one at the bottom of the bar. Where is that option in the Dreamweaver web editor? I'm getting tired of having to drag that single scroll button up and down when browsing my files.