Object movement based on mouse movement

Not sure how to word this but. I have a object on the stage lets say that is 300 pixels wide. The actual stage is only 100px wide. I want to be able to “pan” the object left and right based on mouse position/movement. I saw a tutorial for it a while back but cant seem to find it. Anyone have a link to a tut or can throw out a little source code? It would be greatly appreciated.

:p: