#toTop {
    display: none;
    text-decoration: none;
    position: fixed;
    bottom: 75px;
    right: 20px;
    overflow: hidden;
    width: 51px;
    height: 51px;
    border: none;
    text-indent: 100%;
    background: url('ui.totop.png') no-repeat left top;
    opacity: 50;
    filter: alpha(opacity=5000);
    z-index: 2;
}

#toTopHover {
    background: url('ui.totop.png') no-repeat left -51px;
    width: 51px;
    height: 51px;
    display: block;
    overflow: hidden;
    float: left;
    opacity: 0;
    filter: alpha(opacity=0);
}

#toTop:active,
#toTop:focus {
    outline: none;
}