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jatar_k - 8:25 pm on May 21, 2010 (gmt 0)
I don't know of any such limitation
setcookie("Redirect", "Yes", time()+60*60*24*365, "/", 'www.domain.com');
that should make it available to the other domain, though hidden from the first, haven't tested it myself but I believe I have done that in the past
on the other domain you should be able to dump $_COOKIE and see