Buttons for backgrounds

I’ve seen a tutorial for changing the background inside of flash based on buttons to click. However, these colors were palettes and not of backgrounds such as jpeg.

What I’d like to do is to create 3 buttons and place them on my flash website. These three buttons allow the user to click on them thus changing the background. So if you’re visiting the about page and click one of these buttons, I dont want the user to go back to the home page after clicking.

If anyone can point me any leads, please let me know. Thank you!