Google mashup code won't work. The mapper programs are all designed to work with an ascending hierarchy of 0-3 in each digit space. So 3.gif is level 20 zoom with grid 4 of 4 represented. 1134.gif is zoom 18 (if memory serves me right) and so on. I'm trying to develop a download script, and even I'm having trouble getting my mind around this whole bloody mess. Ah well, at least I don't feel so bad.