Fade in on an external movie clip

Hi all:

I’m sure this is a simple question but doing searches, I’ve found plenty but none that answer my exact question.

I have a movie that calls out to a jpg on the server. I did so using an empty container method. Here’s my code:

_root.createEmptyMovieClip("container",1);
container.loadMovie("[splash.jpg](http://www.tenneymtn.com/skiing/assets/home/splash.jpg)");
container._x = 10;
container._y = 36;
container._alpha=100;

That works, but, I would like to mask it. I can do this easily enough with imported images, but it does not seem to work with loaded images.

Also, on the image, I would like a simple tween of alpha for 0 to 100% say in about 10 frames.

Any and all help would be very appreciated!

S