*{font-family:"Microsoft Yahei" !important;}   

.banner_n {
	width: 100%; height: 450px; overflow: hidden; font-size: 0px; position: relative;
}
.b-img {
	left: 0px; top: 0px; height: 450px; position: absolute;
}
.b-img a {
	height: 450px; float: left; display: block;
}
.b-list {
	margin: 0px auto; width: 900px !important; height: 50px; padding-top: 350px; position: relative; z-index: 1;
}
.b-list span {
	margin: 0px 5px; width: 140px; height: 90px; float: left; display: block; cursor: pointer; _margin: 0 3px;
}
.b-list .spcss {
	margin-top: -20px;
}
.bar-left {
	background: none; left: 0px; top: 0px; width: 100px; height: 100%; display: block; position: absolute; z-index: 1;
}
.bar-right {
	background: none; top: 0px; width: 100px; height: 100%; right: 0px; display: block; position: absolute; z-index: 1;
}
.bar-left em {
	background: url("arrow.png") no-repeat 0px 0px; top: 50%; width: 50px; height: 100px; margin-top: -50px; display: block; position: absolute;
}
.bar-right em {
	background: url("arrow.png") no-repeat -50px 0px; top: 50%; width: 50px; height: 100px; right: 15px; margin-top: -50px; display: block; position: absolute;
}
.bar-left .emcss {
	background-position: 0px -100px;
}
.bar-right .emcss {
	background-position: -50px -100px;
}