Rollover in Flash 8

I am trying to do a simple modification to the Cafe Townsend turorial for the flash menu, exchanging the 4 pictures and the menu descriptions. I would like to replace the button "Click" with the same function initiated instead with a simple rollover, curser rolls over the button and changes the image and description.

I thought this was a simple change from "Click" to "rollOver" or "OnRollOver" but I cannot seem to make it work.