/*下载*/
#downloada {
	float: left;
	width: 1280px;
	height: 237px;
	overflow: hidden;
	margin-right: 20px;
	margin-top: 10px;
}

#downloada .btn_downa {
	float: left;
	width: 237px;
	height: 237px;
	position: relative;
	text-indent: -9999em;
	background: url(../image/fast_down1.png) no-repeat left bottom;
	display: block;
	margin-top: 0px;
}
#downloada .btn_downa:hover {
	text-decoration: none;
	background: url(../image/fast_down1_hover.png) no-repeat left top;
}
#downloada .btn_downb {
	float: left;
	width: 237px;
	height: 237px;
	position: relative;
	text-indent: -9999em;
	background: url(../image/fast_down2.png) no-repeat left bottom;
	display: block;
	margin-left: 100px;
}
#downloada .btn_downb:hover {
	text-decoration: none;
	background: url(../image/fast_down2_hover.png) no-repeat left top;
}
#downloada .btn_downc {
	float: left;
	width: 237px;
	height: 237px;
	position: relative;
	text-indent: -9999em;
	background: url(../image/fast_down3.png) no-repeat left bottom;
	display: block;
	margin-left: 100px;
	margin-top: 0px;
}
#downloada .btn_downc:hover {
	text-decoration: none;
	background: url(../image/fast_down3_hover.png) no-repeat left top;
}