Creating a button like you would in AS2
create a layer for background, another for buttons, and at the top one for scripts
add the button on the stage on the middle layer, in properties call it my_btn, then in the actions keyframe add the following:
Code:
stop();
my_btn.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownHandler);
function mouseDownHandler(event:MouseEvent):void {
gotoAndStop(2);
}
So when you press down on my_btn it advances to frame 2
loader is a bit more involved.. I'll be back with that one