#toTop {
    display: none;
    position: fixed;
    bottom: 100px;
    right: 5px;
    width: 65px;
    height: 65px;
    background-image: url('../image/toTop.png');
    background-repeat: no-repeat;
	background-position:center center;
    opacity: 0.8;
    filter: alpha(opacity=80); /* For IE8 and earlier */
}
#toTop:hover {
    opacity: 1;
    filter: alpha(opacity=100); /* For IE8 and earlier */
}