#toTop {

    display: none;

    position: fixed;

    bottom: 5px;

    right: 5px;

    width: 60px;

    height: 60px;

    background-image: url(../images/up.png);

    background-repeat: no-repeat;

    opacity: 0.4;

    filter: alpha(opacity=40); /* For IE8 and earlier */

}

#toTop:hover {

    opacity: 0.8;

    filter: alpha(opacity=80); /* For IE8 and earlier */

}