.imgs{
	width: 1000px;
	height: 300px;
	margin: 100px auto;
	border: 1px #999999 solid;
	overflow: hidden;
	position: relative;
}

.imgs img{
	width: 50%;
	height: 100%;
	transition:left 0.3s;
	position: absolute;
}

.imgs ul{
	width: 100px;
	position: absolute;
	right: 50px;
	bottom: 20px;
	z-index: 100;/*将其置于顶层*/
}

.imgs ul li{
	float: left;
	list-style: none;
}

.imgs ul li button{
	height: 13px;
	margin-left: 3px;
	border-radius: 50%;
	border: none;
}

#zuo,#you{
	width: 30px;
	height: 50px;
	position: absolute;
	top: 125px;
	z-index: 100;/*将其置于顶层*/
	border: none;
	filter:alpha(Opacity=80);
	-moz-opacity:0.5;
	opacity: 0.5;
	background-color: #B2B2B2;
}

#zuo{
	left: 5px;
}

#you{
	right: 5px;
}

#zuo input,#you input{
	width: 20px;
	height: 20px;
	position: relative;
	top: 15px;
	left: 5px;
	border: none;
	background-size: contain;/*使图片充满*/
	filter:alpha(Opacity=80);
	-moz-opacity:0.5;
	opacity: 0.5;
	background-color: #B2B2B2;
}

#zuo input{
	background-image: url(../img/zuo.png);
}

#you input{
	background-image: url(../img/you.png);
}