These images were created in Photoshop, jpeg'd using a progressive jpeg format, at a 25% quality. You're mileage may vary, as not all viewers support progressive jpeg. I kinda wish I hadn't used the newest and coolest format, since I suspect I've just cut my audience in half. Sorry.
If you'd like to ride the bleeding edge, you can try out Netscape 2.0.
I have also attempted to support most other viewers in the html code. If you have problems with your particular viewer, I would like to know about it. Please be specific.