#Download{width: 1064px;height: 120px;text-align:center;position:absolute;top: 845px;left:50%;margin-left: -371px;z-index:51;border-radius:5px;}
#Download .btn_down_s1{float:left;width: 324px;height: 120px;text-indent:-999em;margin-right: 80px;background:url(../images/btn1.png) no-repeat left top;}
#Download .btn_down_s2{float:left;width: 324px;height: 120px;text-indent:-999em;margin-right: -1px;background:url(../images/btn2.png) no-repeat left top;}
#Download .btn_down_s3{float:left;width: 80px;height: 316px;text-indent:-999em;margin-right: -1px;background:url(../images/btn3.png) no-repeat left top;}
#Download .btn_down_s4{float:left;width: 80px;height: 316px;text-indent:-999em;margin-right: -1px;background:url(../images/btn4.png) no-repeat left top;}
#Download .btn_down_s1:hover{margin-top: -5px}
#Download .btn_down_s2:hover{margin-top: -5px}
#Download .btn_down_s3:hover{background:url(../images/btn3_1.png) no-repeat left top;margin-top: -10px}
#Download .btn_down_s4:hover{background:url(../images/btn4_1.png) no-repeat left top;margin-top: -10px}