Individual Preloaders?

how do I create individual preloaders for movies I load in different levels? The initial preloader works for the backround of the site, but when I load my menu movie with a preloader embeded in it already, the preloader doesn’t show. I’m stumped.

the preloader should be something like _this.getBytesloaded()/_this.getBytesTotal()*100; if the preloader is embed in the original movie or
_parent.getBytesLoaded()/_parent.getBytesTotal()*100 if the preloader is embed in the host movie.