[Chameleon] How to pass forward user specific extents?

[Ken Sanderson]

Here is what I have setup. I have a phtml file similar to the ones found
in the samples (using beta 1.99b), only I have added code to handle a
username and password first and I have put the related HTML tempalate
file in a non-accesible directory. In short it only runs the core of the
original PHTML file if they have the right username and password.

I also want to have them select the extent they wish start off the map
with. Full extent will be an option which would be the extents set in
the MAP file, but there will be a few choices that I want to over-ride
the MAP file extents when it loads, instead using the choosen extents.
Is there a way I can send new extents before the map loads?

Thanks,

Ken Sanderson