This should be possible, (like everything), by creating a custom tile layer with the getTile() function from the main mapType, and with opacity.
Here is a custom tile layer object with opacity: http://maps.forum.nu/v3/gm_customTiles.html ... and I was trying to create what you describe when I got a BSOD, so I am not going to try it again right now because I have work to do, but let us know if you need more help. -- Marcelo - http://maps.forum.nu -- On Dec 14, 10:13 am, Steve D <bigd...@gmail.com> wrote: > Possible to do this? Lots of references to overlay's but I'd like an > underlay! I currently have large blobs of data that are mildly transparent > on top of the google maps road layer so that the roads, lakes and other > features are visible. It would be preferable to have my large mess of > polygon data beneath these layers. The ability to style Google's layers > suggests that the data is flexible, but I don't know where to start. > Ideally, my data could also sit on top of the satellite layer and below > the road layer... but I could live without that for now. Thanks, > > -Steve D -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to google-maps-js-api-v3@googlegroups.com. To unsubscribe from this group, send email to google-maps-js-api-v3+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.