layer transitions

Hi, I wonder if anyone can help. I have a series of layers which are connected using arrow buttons. When pressed I have the next layer appear using the cover transition left to right which looks great when going in one direction but odd when going in the opposite direction. My question is can I use a trigger or some other cunning connivance to have the transition go one way when one arrow is pressed and the opposite way when the other arrow is pressed? All ideas gratefully accepted :)

2 Replies