#download {
	width: 1350px;
	height: 171px;
	position: absolute;
	top: 1000px;
	left: 50%;
	margin-left: -640px;
	z-index: 1500;
}

/*下载*/
#downloada {
	float: left;
	width: 1350px;
	height: 171px;
	overflow: hidden;
	margin-right: 20px;
	margin-top: 10px;
}

#downloada .btn_01 {
	float: left;
	width: 270px;
	height: 171px;
	position: relative;
	text-indent: -9999em;
	background: url() no-repeat left bottom;
	display: block;
	margin-top: 0px;
}
#downloada .btn_01:hover {
	text-decoration: none;
	background: url() no-repeat left top;
}
#downloada .btn_02 {
	float: left;
	width: 270px;
	height: 171px;
	position: relative;
	text-indent: -9999em;
	background: url() no-repeat left bottom;
	display: block;
	margin-left: 66px;
	margin-top: 0px;
}
#downloada .btn_02:hover {
	text-decoration: none;
	background: url() no-repeat left top;
}
#downloada .btn_03 {
	float: left;
	width: 270px;
	height: 171px;
	position: relative;
	text-indent: -9999em;
	background: url() no-repeat left bottom;
	display: block;
	margin-left: 66px;
	margin-top: 0px;
}
#downloada .btn_03:hover {
	text-decoration: none;
	background: url() no-repeat left top;
}
#downloada .btn_04 {
	float: left;
	width: 270px;
	height: 171px;
	position: relative;
	text-indent: -9999em;
	background: url() no-repeat left bottom;
	display: block;
	margin-left: 66px;
	margin-top: 0px;
}
#downloada .btn_04:hover {
	text-decoration: none;
	background: url() no-repeat left top;
}