Resizing Loaded Jpeg

I don’t get why this doesn’t work.


_root.createEmptyMovieClip("container",10);
container.loadMovie("[picture.jpg](http://whowebe.gamedaemons.net/roster/jon.jpg)");
container._x = container._y = 0 ;
container._height = container._width = 50;

I cannot see anything when I test the movie, however if I take out
container._height = container._width = 50;
I can see the picture, but it is not resized.