How do you make the doors that slide up? Well, actually, how do you make the tracks for the doors that you can slide up? I was going to use a piece of 1/2 " plywood for the door panel and want to have them track on the sides so I can lift them in the morning but secure them at night, I suppose with a large pin of some sort. Please help with this new, very interesting project. Remember, I am not a builder and everything is new to me! Oh, and pix, lots of pix. I am visual learned.