Back and Forward buttons

To put it simply, this hack adds some buttons that allow you to go forward and backward through your board, DO NOT POINT OUT THAT BROWSERS ALREADY HAVE THEM! I DON'T WANT TO HEAR IT! I don't want to make it into a button because some boards it will look like crap on, so i'm just using a default button. Excuse the poor coding skills, but I don't know how to make multiple spaces without all of the   . If this hack doesn't work on your board, IE the buttons are out of place, Add or remove   whereever nescassary. If you know how to make a button for this, go for it, I won't stop you. IF YOU LIKE IT PLEASE CLICK INSTALL!