/*重置*/
.clearfix:after {visibility:hidden;display:block;font-size:0;content:" ";clear:both;height:0;}
.clearfix {zoom:1;}	
/*基本样式*/
.poster-main{
	width: 1000px;
	height: 500px;
	position: relative;
	margin: 30px auto;
}
.poster-main a,.poster-main img{
	display:block;
}
.poster-main .poster-list{
	width: 1000px;
	height: 500px;
}
.poster-main .poster-list .poster-item{ 
	width: 200px;
	height: 500px; overflow:hidden;
	position:absolute;
	left:0;
	top:0;
}
.poster-main .poster-btn{ 
	position:absolute;
	top:0;
	z-index:10; 
	cursor:pointer;  
}
.poster-main .poster-prev-btn{
	left:0; 
	background: url(../images/m4-left.png) no-repeat center center;
}
.poster-main .poster-next-btn{
	right:0; 
	background: url(../images/m4-right.png) no-repeat center center;
}