This only works in the standalone debug player, if the swf is a trusted
local file.
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4925 542714f4-19e9-0310-aa3c-eee0fc999fb1
"Object == null" comparison. Otherwise the user might pass in an
undefined, and expect a strict equality test.
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4886 542714f4-19e9-0310-aa3c-eee0fc999fb1