In computer graphics, movies, television, and other kinetic displays, scrolling is sliding text, images or video across a monitor or display. "Scrolling", as such, does not change the layout of the text or pictures, or but incrementally moves (pans or tilts) the user's view across what is apparently a larger image that is not wholly seen. A common special effect is to scroll credits, while leaving the background stationary.
If the question refers to 'endless scrolling' using the tag infinite-scroll (additionally) might help.
Reference: Wikipedia http://en.wikipedia.org/wiki/Scrolling, retreived 2011-04-25