http://www.plogs.net/users/mark/1970/01/01/
Source is messy but available:
http://www.plogs.net/customize/advanced/layersource.bml?id=232
I suppose there are probably better ways to have done this, but this was the first thing that occurred to me at 2:30 in the morning, and so I went with it.
I know it's not strictly development, but I thought the group here would get a kick out of it. Enjoy.
