my closet had been struck by a friend of mine and now there are several holes on the closet door, its one of the doors that have the slanted wood pieces on the front where if you wanted to look in the closets while they were closed you would have to bend down and look up into it....hopefully this info helps i don't know the particular name to these closets
You will have to buy a new door,go to a big DIY store with the measurements,they are called Louvered Doors you cant fix your broken one unless your a master craftsman,they are quite cheap anyway,and a stock item.