Sliding menu tutorial

Hi im currently working on the sliding menu tutorial.
my problem is how to load my content instead of placing them all inside the movie clip.

i want something that when it slides to a section after sliding a movie clip will load.

How is done?
I think this is very similar to the tutorial http://www.wktokyolab.com/main.html
but it loads the movies after the slide.

Thanks

Something like this? =)