One button to perform two actions

hello! i hope anyone can help me, i’ve got a list of products, and what i want to do is that with one button “next”, go to another list, and so on with the rest of my products. but i want to use the same button. i’m not using tweens, i’m moving my list with actioscript, the list is masked and it is a big movie clip. anyone can help me?
i got the code to move it once, i want to tell the button to move it somewhere else if the movie is already in that position.
thanks to all!