yes, ff and ie fit the pic to the screen when they open in a new window, but the problem with new browser windows is that you can't use the back/forward buttons to browse through a picture set or to get back to the original page. you have to close each picture separately or soon you will have hundred or more pictures open when viewing a complete set. that's why i prefer to have the picture opened in the original page as 'fit to screen'. it's just easier to navigate, easier to view and i have to use as few clicks as possible.