Mouse Rollover events

1

Hello all I am a novice to Flash so bear with me! I have box with basically two sections one side is a list of menu items in the form of text buttons that load a movie in the other side when the user mouses over them. Is there a way to unload the movie if the user rolls off the text but leave the movie if he rolls of the text into the loaded movie… if that makes sense…So if user rolls over Item A the options for Item A fade in and he might want to select one or instead move from Item A to Item B etc. Thanks in advance