AS 2 / quick ? about ending a particular MC

my simple ? is, i want to learn how to end a section of a site smoothly and with a certain animation as oppose to the section just abrubtly ending. for exxample, if i have an item on screen and want to switch to another section, i want it so that when a link is clicked, that that 1st item, plays an animation fade out or whatever, and then the new section appears.

id search for it to read/learn but dont know the term/name for it.

thanks in advance