Easing in, easing out

hello, i am new to the kirupa forums, though i have been following the tutorials for about a week now.

anyways i have read some tutorials about easing a movie clip to a location using AS. i have a banner about 480x130 and i am trying to ease a slogan in, and after a few seconds ease it out (on _x axis), and then ease in the next segment of the slogan.

a good example of the effect can be seen here: