first of all, congrats on this project. It is realy great and complete. I also like the overall fast response of the API.
Here are two small cosmetic glitches I found:
btw, I'm using IE7 with windows vista.
1) The "Download Ext 1.0" button on the Downloads page have a white band just below the Download Ext 1.0 text (inside the button). It look realy strange. So Please someone look at this.
2) On the Dialog/Message Box & Progress at the examples, when I first click on the "confirm" show me button and then press any of the answers, the small popup that appears on the top of the page with the answer appears dislocated to the left. After this, it appears on the right position.