Tridge grabbed
my google maps based GPS stuff and has
improved it greatly adding a lot more client side java script. He's setup a
bzr repository for the code at http://gps.ozlabs.org/ (google API key is for gps.ozlabs.org only).
Anyway, I found a
line drawing package for java script so I've added some graphing abilities to his stuff. My first play with java script and bzr. You can pull from my tree at http://gps.ozlabs.org/mikey/. I've also setup a test page for my stuff
here.