Small swf taking a lot of resources

If you go to my site you’ll see a small plane with a banner flying across the top of the window. It seems to be taking a lot of resources and the animation is jittery. I’m using perlin noise for the banner and caurina tweener for the animation.

Also, I wanted to have the plane appear from one side of the browser window and disappear on the other side. The x coordinates I had to put in for this to happen is over 2000. Could this be affecting the performance? Is there anyway I can get the browser width and plug that in for the x coordinates?

If anyone could take a look at my code and see if there are any improvements that could be made, I’d greatly appreciate it.

Here’s the site…
http://creativecornercc.com

Here’s the link to the zipper source file…
http://creativecornercc.com/plane.zip