There's an e-book on Sultan's famous victory over Hattin, the book includes various pictures of history, the origin of campaign, the war itself, enemies tactics, Saltan’s tactics and the aftermaths of war.
Here's the link of this book:
http://rapidshare.de/files/18734062/09crusc019.rar.html
There is also one movie which is based on Sultan's attack over Jerusalem, the movie name is "Kingdom Of Heaven".