ImageMap extension

I've just had a go, as you can see on Recent Changes. I used the ImageMap editor in The GIMP, but that gives you a text file in HTML format rather than wiki format. I altered it according to the wiki-formatted example on the MediaWiki ImageMap page. Pretty tedious. There are a couple of online editors linked from that page, but they all buggered up in various ways. I'll try again at some point and see which one is best. Doing it by hand, without an editor, would be about as tedious an undertaking as I can imagine.