While some of the items described help reduce navigation issues, four items in particular are very interesting, as they provide additional functionality; they are the JavaScript, Redirections, Images, and Plug-Ins buttons. The ability to disable JavaScript, redirects, images, and plugins in a specific tab or window is unique to the Toolbar Enhancement extension. Previously, these options could be applied only globally to all windows and all tabs. This makes it possible to allow a favorites-type site to run with all the bells and whistles; at the same time, another browser window can act as a sandbox, with everything locked down when you are visiting sites of dubious origin.