[ic] Variable that holds HTTP_REFERER

[interchange-users@interchange.redhat.com (interch)]

I tried using the [data session referer] approach to get the HTTP_REFERER,
which works except in my case  HTTP_REFERER can change within the same
session, and the session database only holds the data for the first time
the user hits the site, so if the user comes in later from a different
url [data session referer] still shows the original referer url.  I tried
to get a value from $ENV{HTTP_REFERER} in a perl tag but it doesnt' have a
value.  Any suggestions?

Chris