Scrolling movie clip tutorial


I have a horizontal movieclip that I want to scroll. I want to use two arrows that I’ve made; one facing left and one facing right. When I click down on the arrows I want the movie clip to continue to scroll till either it gets to the end or till the user releases the arrow. Anyone know any tutorials one how to do this? I’ve found lots of tutorials on sliders and more traditional scrollers but none on what I’m describing. Thanks!