var timer;
$("li").on("mouseover",function(){
clearTimeout(timer);
timer=null;
$(this).addClass("active");
$(this).siblings().removeClass("active");
var $index=$(this).index();
/*$(".wrapper").animate({top:-$index*300});*/
timer=setTimeout(function(){
$(".wrapper").animate({top:-$index*300});
},300)
}); $('.dd').find($(".cc")).hover(function(){
$(this).find(".c1").stop().animate({width:0},100,function(){
$(this).hide().next().show().animate({width:300},100);
})
},function(){
$(this).find(".c2").animate({width:0},100,function(){
$(this).hide().prev().show().animate({width:300},100);
})
});
*{margin:;padding:;box-sizing:border-box}
ul{list-style:none;border:1px solid #ccc;border-radius:5px;width:900px;margin:30px auto 10px;}
.clearfix{zoom:;}
.clearfix:after{content:".";display:block;width:;height:;visibility:hidden;clear: both;}
li{float:left;border-right:1px solid #ccc;width:20%;text-align:center;height:30px;line-height:30px;cursor:pointer;}
li:last-child{border:none;}
li.active{background-color:#0099cc;color:#fff;}
.container,.wrapper,.con{height:300px;}
.container{width:900px;margin:0 auto;position:relative;overflow:hidden;}
.wrapper{position:relative;top:;}
.con{line-height:300px;text-align:center;border:1px solid #ccc;}
.dd{margin: 30px auto;width:1200px;}
.cc{float:left;width:300px;height:200px;overflow:hidden;margin:20px;}
.c1,.c2{width:100%;height:100%;margin:0 auto;text-align:center;line-height:200px;cursor:pointer;overflow:hidden}
.c1{background-color:#c01110;}
.c2{background-color:#0099cc;}<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<!--<form action="#">
<select name="" id="sel1">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
</select>
<input type="submit" id="sub" value="提交"/>
</form>-->
<ul class="clearfix">
<li class="active">选项1</li>
<li>选项2</li>
<li>选项3</li>
<li>选项4</li>
<li>选项5</li>
</ul>
<div class="container">
<div class="wrapper">
<div class="con">
111111
</div>
<div class="con">
222222
</div>
<div class="con">
33333
</div>
<div class="con">
44444
</div>
<div class="con">
55555
</div>
</div>
</div>
<div class="dd clearfix">
<div class="cc">
<div class="c1">111</div>
<div class="c2">222</div>
</div>
<div class="cc">
<div class="c1">111</div>
<div class="c2">222</div>
</div>
<div class="cc">
<div class="c1">111</div>
<div class="c2">222</div>
</div>
<div class="cc">
<div class="c1">111</div>
<div class="c2">222</div>
</div>
<div class="cc">
<div class="c1">111</div>
<div class="c2">222</div>
</div>
<div class="cc">
<div class="c1">111</div>
<div class="c2">222</div>
</div>
</div>
</body>
</html>