gas guage not working..?

its not a huge problem because i dont have my liscense yet, but when the battery was almost dead, but enough juice to turn over is when it started sticking. this picture is when the dash isnt even in my car and its still sticking.
i havent driven it enough to find out if it still works, but it just stays in the same place.

basically, anyone have the same problem/know whats wrong

oops. forgot the pic
http://i44.photobucket.com/albums/f26/tbattesh/dash012.jpg