Preloader help

Hi, trying to work the following preloader code with an external transition fla file (cs3) i have attached. I know it can be easy but just don’t know how to make it work. Pls help! :beer:

This is the preloader code:

stop();
var delay:Number = 0;
function preloadContent() {
    var bl;
    var bt;
    var pc;
    bl = this.getBytesLoaded();
    bt = this.getBytesTotal();
    pc = Math.ceil((bl/bt)*100);
    loader_mc.gotoAndStop(delay);
    if (pc>delay) {
        delay += 1;
    }
    if (delay>=100) {
        clearInterval(inter);
        loader_mc.play();
    }
}
var inter:Number = setInterval(this, "preloadContent", 3);