Im not sure if Im the only one, but I find that the purpose of zoom of city maps is so you can see whole of map at once rather than a claustrophobic box where you have to toggle around. The zoom is so big do we really need another toggle window?
here is a screen save of how big it is.
I used t be able to take PDF files of the page, (and place into Photoshop to save to web and size them) now for some reason I have the base squares twice the size and facilities and roads actual size, giving a crooked look.
Yes, the reason for that is that the actual page uses absolute values for the facilities and roads but the full image size for the backgrounds, thus the background tiles stay the same while the facilities and roads shrink.