#download { width: 1280px; height: 100px; position: absolute; left: 50%; margin-left: -430px; z-index: 1500; }
#downloada {float: left;width: 1280px;height: 100px;overflow: hidden;margin-right: 20px;margin-top: -150px;}
#downloada .btn_01 { float: left; width: 314px; height: 100px; position: relative; text-indent: -9999em; background: url("../images/btn01.png") left top no-repeat; display: block; margin-top: 0px; }
#downloada .btn_01:hover { text-decoration: none; background: url("../images/btn01_hover.png") left top no-repeat; }
#downloada .btn_02 { float: left; width: 314px; height: 100px; position: relative; text-indent: -9999em; background: url("../images/btn02.png") left top no-repeat; display: block; margin-left: 235px; margin-top: 0px; }
#downloada .btn_02:hover { text-decoration: none; background: url("../images/btn02_hover.png") left top no-repeat; }
#downloada .btn_03 { float: left; width: 314px; height: 100px; position: relative; text-indent: -9999em; background: url("../images/btn03.png") left top no-repeat; display: block; margin-left: 120px; margin-top: 0px; }
#downloada .btn_03:hover { text-decoration: none; background: url("../images/btn03_hover.png") left top no-repeat; }