I've done a few simple mod rewrites in the past but I'm really scratching my head over this one and I'm not entirely sure it's even possible...
Basically there are 2 domains on the same server
Walter.com goes to:
Walter.com
Nikki.com goes to:
Walter.com/Nik
Walter.com also has a directory:
Walter.com/Walt
I want to go to
Nikki.com/Walt but really be viewing Walter.com/Walt
But ONLY if the user followed a link from Nikki.com
If the user started at Walter.com I want the url to remain as Walter.com
Essentially there are 2 domains that share a directly, but that's all they share.
I know this is possible for when the visitor first enters Nikki.com/Walt but if I have a rewrite conditional on the referrer domain (Nikki) will it stick as they browse around or will it no longer rewrite after they follow the first link?