Cara Menyembunyikan Buku Tamu di Kanan Layar

<style type="text/css">
#gb{
position:fixed;
top:50px;
z-index:+1000;
}
* html #gb{position:relative;}

.gbtab{
height:100px;
width:30px;
float:left;
cursor:pointer;
background:url('https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibCAa3_86FruyLEtzlfbe9bdV8wevJSW5R5jgrOqJQEq5nOpUs7tLR8X8EbG6LqJfqVIPX12bCAHaj6_lv7WlZrP7fUbMWv_4t-aM5HhlQyg90mNQH-_yFUPoexpQlNwnhGQB2avblx-HZ/') no-repeat;
}
.gbcontent{
float:left;
border:2px solid #A5BD51;
background:#F5F5F5;
padding:10px;
}
</style>

<script type="text/javascript">
function showHideGB(){
var gb = document.getElementById("gb");
var w = gb.offsetWidth;
gb.opened ? moveGB(0, 30-w) : moveGB(20-w, 0);
gb.opened = !gb.opened;
}
function moveGB(x0, xf){
var gb = document.getElementById("gb");
var dx = Math.abs(x0-xf) > 10 ? 5 : 1;
var dir = xf>x0 ? 1 : -1;
var x = x0 + dx * dir;
gb.style.right = x.toString() + "px";
if(x0!=xf){setTimeout("moveGB("+x+", "+xf+")", 10);}
}
</script>
<div id="gb">
<div class="gbtab" onclick="showHideGB()">   </div>
<div class="gbcontent">

masukkan code/script cbox/bukutamu sobat disini

<br/>
<div style="text-align:right">
<a href="javascript:showHideGB()">
[tutup]
</a>
</div>

</div>

</div>
<script type="text/javascript">
var gb = document.getElementById("gb");
gb.style.right = (30-gb.offsetWidth).toString() + "px";
</script>