metadata popup when hoving over picture

Not sure if this is already implemented in Smugmug (As I can't find it) but I would like to be able to have a little bubble show up when someone hovers over a caption, link, or a picture that shows information about the picture (camera used, focal length, ISO, aperture, shutter speed, etc). Many other photo galleries do this and would like to see the feature implemented into Smugmug if it isn't already.