V2.42 dual map experiment.
What is this example trying to show?
The new GOverviewMapControl(), which was introduced in API alpha v2.41 and discovered by Mike Williams (see).
That is a built in dual map feature in Google Maps API.
Default size of the small map is only 150px x 150px. The map above is adjusted to 256 x 256. The default position is in the right bottom corner of the window. That is why the border is asymmetric.
An experiment by Esa.