I was annoyed that I have to rely on bloated Flex components to do simple stuff. I ported the kirupa AS2 scrollbar to AS3 and then added a few touches to make it a little more versatile. It is really just a starting point. For example, if you are using a very small scroll bar then when dragging too fast you can loose the focus on the scroll bar. Again, this is a simplified class for you to build on and to add features like the one I am suggesting. Enjoy!