I've also run into a couple of "Disney" sites that apparently use Java scripts to lock you into their site, although they do it in a rather "gentler" fashion. All that happens is that your "back" button keeps recycling you to another Disney site - regardless of where you came in from. Clicking your "home" or typing in a non-Disney site will get you out, and there appear to be no residual effects, but it is irritating.