ul#mian-banner-slider{
	margin:0;
	padding:0;
	list-style:none;
}
ul#mian-banner-slider li{
	margin:0;
	padding:0;
	position:relative;
	list-style:none;	
	float:left;
	background:none;
    overflow: hidden;
}
ul#mian-banner-slider li img.slider-img{
	position: absolute;
	left:50%;
	top:50%;
    z-index:1;	
}