Recently facebook has moved his Photo Viewer and it’s associated user’s comments to black background display window. Many of the facebook users are not comfortable with new photo viewer and with user’s comments display methods
How to switch your facebook Photo Viewer to its old classic one
If you are viewing photos in facebook and you want to switch to classic photo viewer.
Just Press F5(Refresh) from your browser to load the classic Facebook Photo Viewer
Let me know your suggestions and please do post your comments as that is the biggest encouragement I receive for writing