It's 5am, and I can't think straight - and I can't tell the difference between what you have and a (with QIing its .boxObject to a nsIScrollBoxObject). Unless you're doing remote XUL, of course; if that's the case it sounds more like it needs some nsIClassInfo magic.
(From Alex: I was never, never able to make a work.)
Posted by Mook at January 18, 2009 5:47 AM