How Can I make A Preloader 2 Load A Separate swf To My Site?

I know how to make a preloader for entire site. But how can I make a preloader for an separate .swf. Like preloading background.swf (the background is an separate swf in this case)\r\rexample: When I press main ( with the LoadMovie code) , I want a preloader that loads the background.swf\r\rAnd when I press button two, I want a preloader that loads background2.swf\r\rthnx\r\rPS: I already know how to load a swf file.