How get referring URL?

[eluser]thurting[/eluser]
You could use a cookie if you really want but I don't think it makes sense to do that. For this I think a session is best. The value is only needed for a very short amount of time, and also deals directly with the session at hand - i.e. the first page the user landed on during the current session. There is no need to keep this value on the users computer with a cookie.