prototype confusion
<p><img src="http://i.stack.imgur.com/zGn7u.png" alt="alt text"></p>

<p>This is the representation of prototype chain when I created two instances of Book constructor. The screen-shot is taken from "High Performance Javascript - N.C.Jakas". 
My confusion is about the Book constructor given in the middle (the yellow box with the heading "Book"). As every function in javascript is an instance of Function prototype, shouldn't this box (Book) has a <strong>proto</strong> property linking it to prototype of <strong>Function</strong>.? </p>
