On: Ask HN: Who is hiring? (December 2013)

[euroclydon]

    var win = window.open(some_url_on_the_same_domain);

or

    var parent = window.parent;

Now, you can access global variables on either parent or win.

[ben336 → euroclydon]

oh cool. In my head when I see that I just think spammy popup :) I can't recall seeing it used for a legitimate purpose. But yeah that would accomplish what you're describing.