Google with Overlay Example
Demonstrate a Google basemap used with boundary overlay layer.
An overlay in a Geographic projection can be stretched to somewhat
line up with Google tiles (in a Mercator projection). Results get
worse farther from the equator. Use the "reproject" option on a
layer to get this behavior. Use the sphericalMercator option on
a Google layer to get proper overlays (with other layers in
Spherical Mercator).