function book01() {
	document.getElementById("selectedBook").className = "half book01";
	document.getElementById("synopsis01").className = "half see";
	document.getElementById("synopsis02").className = "half hidden";
	document.getElementById("synopsis03").className = "half hidden";
	document.getElementById("synopsis04").className = "half hidden";
	}
function book02() {
	document.getElementById("selectedBook").className = "half book02";
	document.getElementById("synopsis01").className = "half hidden";
	document.getElementById("synopsis02").className = "half see";
	document.getElementById("synopsis03").className = "half hidden";
	document.getElementById("synopsis04").className = "half hidden";
	}
function book03() {
	document.getElementById("selectedBook").className = "half book03";
	document.getElementById("synopsis01").className = "half hidden";
	document.getElementById("synopsis02").className = "half hidden";
	document.getElementById("synopsis03").className = "half see";
	document.getElementById("synopsis04").className = "half hidden";
	}
function book04() {
	document.getElementById("selectedBook").className = "half book04";
	document.getElementById("synopsis01").className = "half hidden";
	document.getElementById("synopsis02").className = "half hidden";
	document.getElementById("synopsis03").className = "half hidden";
	document.getElementById("synopsis04").className = "half see";
	}
function allBooks() {
	document.getElementById("selectedBook").className = "half allBooks";
	document.getElementById("synopsis01").className = "half hidden";
	document.getElementById("synopsis02").className = "half hidden";
	document.getElementById("synopsis03").className = "half hidden";
	document.getElementById("synopsis04").className = "half see";
	}