Skull Graphic Animation with Adobe Illustrator CS2 and Adobe Flash MX2004

Again, this is simply honing my Flash skills and to showcase Creatorii animation. And once again it is from a drawing that sat for a while in a sketchbook, I'd intended it for a T-shirt print.
As you can see, the animation loops and as for the illustration itself, all the lines are strictly vertical, horizontal or 45º.