.pagetop {
    display: none;
    position: fixed;
    bottom: 80px;
    right: 20px;
    z-index: 2;
}
.pagetop a {
    display: block;
    text-align: center;
    text-decoration: none;
}
.pagetop a:link {
    filter: alpha(opacity=80);
    -moz-opacity:0.80;
    opacity:0.80;
}