iPhone开发的页面卷曲和转动效果

I'm looking for a very simple page turn effect, similar to the one in iBooks BUT much simpler. I only need the page to be turned if the user swipes the screen (so no difficult 'grabbing' the page animations etc. -- simply an animation). Actually, all I would need is the following with the exception that it should not CurlDown or CurlUp, but from the left side to the right side and vice versa:I'm looking for a very simple page turn effect,