#toTop {
    display: none;
    position: fixed;
    bottom: 50px;
    right: 5px;
    width: 64px;
    height: 64px;
    background-image: url('../image/up.gif');
    background-repeat: no-repeat;
    opacity: 0.6;
    filter: alpha(opacity=60); /* For IE8 and earlier */
    -webkit-border-radius: 3px;
    -khtml-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;	
}
#toTop:hover {
    opacity: 1.0;
    filter: alpha(opacity=100); /* For IE8 and earlier */
    -webkit-border-radius: 3px;
    -khtml-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;	
}