FACEPAD, batter known as facebook photo album downloader will allow you to download your friends facebook photo albumbs with only a click of a button.
To download photos from the a friend's album (NOT EVENTS OR GROUPS ALBUM), right-click (with your mouse) on the name/link of a facebook album and click the Download Album with FacePAD option. If you did this properly, a JavaScript pop-up will appear telling you that it has begun downloading the selected album. Press OK and the photos will be downloaded to Firefox’s default download directory.