Website Fading Help

hi i am making a website but i want to make it more profesional. I have made it so the menu with buttons is on a seperate flash movie but loads the other flash pages in another movie that is placed underneith it if you get me? well i know how to do that but i want it so that when you click a button then the movie pages in the other movie ‘Fade’ out then fade the other movie over the top nice and neatly. Or i wouldnt mind if there was other proffesional ways to animate the pages out then another one back in. If you need more infomation then just ask. Hope someone can help i would really appreciate it. Thanks.