Loading Random External Flash Files

Hello Everyone, this is my first post i am wonder if someone could help me.

I have 5 external flash files that i am trying to load randomly in from a seperate flash files
(main.swf is trying to randomly load: Flash1.swf, flash2.swf, flash3.swf, flash4.swf, flash 5.swf)

this is what i have so far:

var myLoader:Loader = new Loader();
addChild(myLoader);
var url:URLRequest = new URLRequest(“flash1.swf”);
myLoader.load(url);
it works in loading just one flash movie but im looking to have to randomly load from the five .swf’s

thanks!