http://photosynth.net/view.aspx?cid=8f2 ... 163acecd05
When you are there, click the full screen button (highlighted with the red square) to go full screen. Then use your mouse wheel to zoom all the way in and out to see all the details from every part of the keyboard.
Works for me with IE9, FF6, Chrome on Win7. I think it needs Microsoft Silverlight.
Enjoy!