.daohang {
	width: 1920px;
	height: 60px;
	left: 50%;
	margin-left: -960px;
	overflow: hidden;
	position: relative;
	background: url(../image/daohang.jpg) no-repeat center;
	background-position-x: center;
	background-position-y: center;
	background-position: 0px -0px;
}
#downloaddh {
	width: 1400px;
	height: 51px;
	position: absolute;
	top: -5px;
	left: 50%;
	margin-left: 280px;
	z-index: 1500;
}
#downloaddha {
	float: left;
	width: 1400px;
	height: 51px;
	overflow: hidden;
	margin-right: 20px;
	margin-top: 10px;
}
#downloaddha .btn_downa {
	float: left;
	width: 110px;
	height: 51px;
	position: relative;
	text-indent: -9999em;
	background: url(../image/d1.png) no-repeat left bottom;
	display: block;
}
#downloaddha .btn_downa:hover {
	text-decoration: none;
	background: url(../image/d1.png) no-repeat left top;
}
#downloaddha .btn_downb {
	float: left;
	width: 110px;
	height: 51px;
	position: relative;
	text-indent: -9999em;
	background: url(../image/d2.png) no-repeat left bottom;
	display: block;
	margin-left: 20px;
}
#downloaddha .btn_downb:hover {
	text-decoration: none;
	background: url(../image/d2.png) no-repeat left top;
}
#downloaddha .btn_downc {
	float: left;
	width: 110px;
	height: 51px;
	position: relative;
	text-indent: -9999em;
	background: url(../image/d3.png) no-repeat left bottom;
	display: block;
	margin-left: 20px;
}
#downloaddha .btn_downc:hover {
	text-decoration: none;
	background: url(../image/d3.png) no-repeat left top;
}
#downloaddha .btn_downd {
	float: left;
	width: 110px;
	height: 51px;
	position: relative;
	text-indent: -9999em;
	background: url(../image/d4.png) no-repeat left bottom;
	display: block;
	margin-left: 20px;
}
#downloaddha .btn_downd:hover {
	text-decoration: none;
	background: url(../image/d4.png) no-repeat left top;
}