$(function(){
$(".nav dd").click(function(){ $(‘.nav dd‘).eq($(this).index()).addClass("active").siblings().removeClass("active");
$(".div1 ul li").hide().eq($(this).index()).show();
})
})
<div class="nav">
<dl>
<dd class="active">1</dd>
<dd>2</dd>
<dd>3</dd>
</dl>
</div>
<div class="div1">
<ul>
<li><img src="img/1.jpg"/></li>
<li><img src="img/2.jpg"/></li>
<li><img src="img/3.jpg"/></li>
</ul>
</div>
div,body,ul,li,img,dd,dl{
margin:0;
padding:0;
}
.nav{
width:100px;
height:14px;
position:absolute;
bottom:10px;
right:20px;
z-index: 10000;
left: 50%;
margin-left: -50px
}
.nav dl dd{
list-style-type:none;
width:12px;
height:12px;
float:left;
margin-right:5px;
cursor:pointer;
border:1px solid #fff;
}
.nav dl .bg{
background:#ff7300;
width:14px;
height:14px;
border:none;
}
.nav dl dd.active{
background:red;
color:red;
}
.div1{
height:672px;
position: relative;
}
ul{
width:100%;
height:672px;
position:relative;
}
ul li{
list-style:none;
position:absolute;
width:100%;
height:672px;
}
ul li img{
width:100%;
height:672px;
}
ul li:first-child{
z-index: 999;
}
ul li:nth-child(2){
z-index:888;
}
ul li:last-child{
z-index:111;
}