#toTop {
    display: none;
    position: fixed;
    bottom: 5px;
    right: 5px;
    width: 64px;
    height: 64px;
    background-repeat: no-repeat;
    opacity: 0.4;
    filter: alpha(opacity=50); /* For IE8 and earlier */
	z-index : 10000;
	
}
#toTop:hover {
    opacity: 0.8;
    filter: alpha(opacity=90); /* For IE8 and earlier */
}