Cara membuat buku tamu show/dari atas

Cara membuatnya :
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Rancangan, Tambah Gadget,  Html/Java Script
Dan Simpan kode berikut :

<style type="text/css">
#gb{
position:fixed;
right:450px;
z-index:+1000;
}
* html #gb{position:relative;}

.gbtab{
height:100px;
width:30px;
float:left;
cursor:pointer;
background:url();
}
.gbcontent{
float:left;
border:2px solid  #0F0;
background:#ffffff;
-moz-border-radius-topleft:15px;
-moz-border-radius-topright:15px;
-moz-border-radius-bottomleft:15px;
-moz-border-radius-bottomright:15px;
padding:10px;
}
</style>
<script type="text/javascript">
function showHideGB(){
var gb = document.getElementById("gb");
var w = gb.offsetWidth;
gb.opened ? moveGB(0, 1500-w) : moveGB(20-w, 0);
gb.opened = !gb.opened;
}
function moveGB(x0, xf){
var gb = document.getElementById("gb");
var dx = Math.abs(x0-xf) > 25 ? 35 : 1;
var dir = xf>x0 ? 1 : -1;
var x = x0 + dx * dir;
gb.style.top = x.toString() + "px";
if(x0!=xf){setTimeout("moveGB("+x+", "+xf+")", 10);}
}
</script>
<div id="gb">

<div class="gbtab" onclick="showHideGB()"> </div>
<div class="gbcontent">

<!--  Script Chatbox nya disini -->

<center><a href="javascript:void(0);" onclick="showHideGB()"><input type="button" value="Close" class="close" /></a>

</center></div>
</div>
<script type="text/javascript">
var gb = document.getElementById("gb");
gb.style.top = (-400-gb.offsetWidth).toString() + "px";
</script></div>

<a class="west" href="javascript:void(0);" onclick="showHideGB()" title="Buku Tamu"><img alt="Buku Tamu" heigth="125" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgp_EpebXzyX_RRVUJmatndmzBXlrOhqCPw5gzl3g3W47Obv-6BsSJLKU4HZhvj4qFTRnBqGww_ZY5lOqQvjaJRnQLcl7iBQdhviucdcc4VWmJoDoyPQsugUSWKFVvpkLFNWfNTF2li_-I/s1600/Guestbook.png" border="0" /></a>

4. Simpan dan lihat hasilnya

Pertama melihat menu ini ada pada blog  http://ozaena.blogspot.com/ kayanya bagus jadi saya tertarik membuat Buku tamu showhide ini, sangat menarik dan kreatif, dan cari tahu cara membuatnya dan ternyata bisa dengan edit-edit script menu shoutbox showhide lainnya. Selamat mencoba