Scrolling text buttons and functionality

Hey everybody,

Currently on my site, I have a news section with scrolling text. It has up and down buttons that you click on to scroll up or down. You can check it out here:

The problem is, you have to continually click the up and down arrows to scroll, I would like to for the user to be able to simply hold down on the button and have the text scroll. Here’s an example of what I’d like:

Does anybody know how to make the buttons scroll automatically without having to constantly click them? Any help or advice would be very much appreciated. Thanks a lot!