// JavaScript Document

function books_init() {
	document.getElementById("content_book1").style.display = "none";
	document.getElementById("content_book2").style.display = "none";
	document.getElementById("content_book3").style.display = "none";
	document.getElementById("content_book4").style.display = "none";
	document.getElementById("content_book5").style.display = "none";
	document.getElementById("content_book6").style.display = "none";
	document.getElementById("content_book7").style.display = "none";
	document.getElementById("content_book8").style.display = "none";
	document.getElementById("content_book9").style.display = "none";
	document.getElementById("content_book1").style.display = "block";
}

books_init();