<style type="text/css">
#fadeinbox{
position:absolute;
width: 336px;
left: 0;
top: -400px;
border: 2px solid #000000;
background-color: #ffffff;
padding: 4px;
z-index: 100;
visibility:hidden;

}
</style>
<script type="text/javascript" src="http://www.becerixiz.net/prototype.js"></script>
<DIV id="fadeinbox" style="filter:progid:DXImageTransform.Microsoft.RandomDissolve(duration=3) ; -moz-opacity:0">
Kodunuz buraya
</div>