<div class="img-slid" id="img-slid">
<div class="pre"><</div>
<ul style="">
  <li>
    <img src="http://image.zcool.com.cn/img3/11/42/m_1344239437912.jpg" alt="" />
  </li>
  <li>
    <img src="http://image.zcool.com.cn/img3/36/15/m_1344239438115.jpg" alt="" />
  </li>
  <li>
    <img src="http://image.zcool.com.cn/img3/24/8/1344239434435.jpg" alt="" />
  </li>
</ul> 
<div class="next">></div>
</div>

img{
  border:0px;
}

.img-slid ul li{
  background: none repeat scroll 0 0 #000000;
  float: left;
  height: 200px;
  overflow: hidden;
  position: relative;
  width: 400px;
}
.img-slid ul,li{
  list-style: none outside none;
  margin: 0;
  padding: 0;
}
.img-slid{
  width:400px;
  overflow: hidden;
  position: relative;
  height: 200px;
}
.img-slid ul{
  position: absolute;
  height: 200px;
  
}
.img-slid .pre,.next{
  color: #fff;
  font-size:24px;
  text-align: center;
  height:200px;
  position:absolute;
  background: #000;
  opacity: 0;
  width:50px;
  line-height:200px;
  cursor: pointer;
}
.img-slid .pre:hover{
  opacity: 0.2;
}
.img-slid .next:hover{
  opacity: 0.2;
}
.img-slid .pre{
  left:0;
}
.img-slid .next{
  left:350px;
}