It means that plugin all pages of your site can be opened jquery either in your browser or animation through effects previewmagic ajax facilities. Previewmagic navigation is an easy & beautiful way to add ajax facilities to gallery every site with preview little effort. But transition if you use php or something like that you get additional possibility of varying content according to the type of request (if it is ajax or image not). You can apply your script to ajax loaded slideshow content using history previewmagic events & event page handlers. If you want to return to the initial page the framework only thing you loader popup need to do is to hide the previewmagic panel