cc: martijn for implementation comment. I wonder why marquee js does not have chrome privileges.
(In reply to comment #2) > I wonder why marquee js does not have chrome privileges. Because there is a huge risk for security problems that way. Especially if marquee bindings would get chrome privileges. There is bug 208864 for the general issue that marquees are not working when js is disabled. I'm afraid I can't really do anyting about this. I have some idea about rewriting the marquee code, using -moz-transform: translateX and SVG SMIL (not checked in), but I have totally no idea if that would be feasible.
Joe, JS has privileges based on the Window it's running in, basically. Certainly XBL JS does.