made 'this' of the toggler's callbacks reference the right thing if called as a method...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
documented the feature form the last commit...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
added ribbon rolling machinery, still not connected to anything...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>