[OpenLayers-Users] Insert an higher level overview map on a WMS-C map?

[Ryan McKinley]

Hi-

I'm looking at tilecache and WMS-C, it looks really good except that I
need to display a full world overview in a 300x300 box.

For the WGS84 (EPSG:4326 ) map config, the top level is 2x(256px) big.

Is there any clever way to insert an overview map as the top level of
a cached map service?  I can imagine something where I swap base layer
definitions if you zoom out, but that seems like it would be nice to
have something that worked transparently.

Thanks for any pointers
Ryan