I recently came into possesion of my grandfather's old S&W 32 CTG:



This is the first gun I ever fired, many many years ago and I have not fired it or seen it since that outing. As a result, I am at a loss as to how to open the little bastard in order to clean and load it.

As you can see by this picture, there is a screw/pivot point just in front of the trigger guard which tells me that this paritcular gun is a "top break" loader, but for the life of me, I cannot remeber how it's done:



Any help in figuring this out would be greatly appreciated.