Random Movie load

For my new website header I would like a random .swf to load in a certain position on the stage.

I have been searching and found many similar threads/tutorials but any code I have tried from there, comes up with errors upon publishing. The only problem I thought of is possibly due to the fact they were written for previous Flash versions, but I have set my movie as Actionscript 2.0 and still get errors.

Basically, I’d like one of 10 small .swfs loading randomly, once just when the page loads.
This .swf would stay there until the page is refreshed, then another .swf would be loaded in the same place. So an .swf just needs to load once everytime the animation appears.

The .swfs are named as “movie_0.swf” through to "movie_9.swf. These will all be held in the main directory of the site, the same as the header.

If anyone has a link to another thread that will get this to work in CS3, or if someone could show what the code should look like, I’d be very grateful.

Many thanks,
Cal