.poster-main{
			position: relative;
			margin: 50px auto;
		}
		.poster-main .poster-list .poster-item{
			position: absolute;
			left: 0;
			top: 0;
		}
		.poster-main .poster-btn{
			position: absolute;
			top: 0;
			cursor: pointer;
		}
		.poster-main .poster-prev-btn{
			left: 0;
			background: url("../images/btn_l.png") no-repeat center center;
		}
		.poster-main .poster-next-btn{
			right: 0;
			background: url("../images/btn_r.png") no-repeat center center;
		}
		.poster-list li{list-style:none;}