/*下载*/
#downloada {
	    float: left;
    width: 948px;
    height: 237px;
    overflow: hidden;
    margin-right: 20px;
    margin-top: 119px;
}

#downloada .btn_downa {
	float: left;
	width: 292px;
	height: 120px;
	position: relative;
	text-indent: -9999em;
	display: block;
	margin-top: 0px;
}
#downloada .btn_downa:hover {
	text-decoration: none;
}
#downloada .btn_downb {
	float: left;
	width: 292px;
	height: 120px;
	position: relative;
	text-indent: -9999em;
	display: block;
	margin-left: 30px;
}
#downloada .btn_downb:hover {
	text-decoration: none;
}
#downloada .btn_downc {
	float: left;
	width: 292px;
	height: 120px;
	position: relative;
	text-indent: -9999em;
	display: block;
	margin-left: 30px;
	margin-top: 0px;
}
#downloada .btn_downc:hover {
	text-decoration: none;
}