.show-img{
	position: relative;
	width: 100%;
	padding: 15px 0;
overflow: hidden;
}
.vmc-centered{
	display: block;
	width: 990px;
	white-space:nowrap;
	margin: 0 auto;
overflow: hidden;
	font-size: 0; 消除display:inline;/*不换行的间隙*/
}
.vmc-centered li{
	display:inline;
	padding: 5px;
overflow: hidden;
}

.left_btn,.right_btn{
	position: absolute;
	width: 20px;
	height: 50px;
	top: 30%;
	z-index: 500;
	cursor: pointer;
	opacity: 0.5;
}
.left_btn:hover,.right_btn:hover{
	opacity: 1;
}
.left_btn{
	left: 0px;
	background: url(../images/icon/lt.PNG) no-repeat 0px 12px;
}
.right_btn{
	right:0px;
	background: url(../images/icon/rt.PNG) no-repeat 5px 12px;
}