#Download {
    width: 440px;
    height: 271px;
    text-align: center;
    position: absolute;
    top: 887px;
    left: 50%;
    margin-left: -228px;
    z-index: 51;
    border-radius: 5px;
    background: url() no-repeat left top;
}
#Download .btn_down_s1 {
    float: left;
    width: 110px;
    height: 271px;
    text-indent: -999em;
    margin-left: 0px;
    margin-top: 0px;
    background: url(../images/btn_01.png) no-repeat left top;
}
#Download .btn_down_s1:hover,
#Download .btn_down_s2:hover,
#Download .btn_down_s3:hover,
#Download .btn_down_s4:hover {
    margin-top: -8px;
}
#Download .btn_down_s2 {
    float: left;
    width: 110px;
    height: 271px;
    text-indent: -999em;
    margin-left: 0px;
    margin-top: 0px;
    background: url(../images/btn_02.png) no-repeat left top;
}
#Download .btn_down_s3 {
    float: left;
    width: 110px;
    height: 271px;
    text-indent: -999em;
    margin-left: 0px;
    margin-top: 0px;
    background: url(../images/btn_03.png) no-repeat left top;
}
#Download .btn_down_s4 {
    float: left;
    width: 110px;
    height: 271px;
    text-indent: -999em;
    margin-left: 0px;
    margin-top: 0px;
    background: url(../images/btn_04.png) no-repeat left top;
}