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myFoucus.set({
id:'picBox',
})
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<input type="text" />
</form>
</div>
</div><!--nav_mid结束-->
<div></div>
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<div id="picBox">
<div>
<ul>
<li><img src="img/ad2.jpg"></li>
<li><img src="img/ad3.jpg"></li>
<li><img src="img/ad4.jpg"></li>
</ul>
</div>
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body{margin: 0;font: 14px/1.5 arial,"Microsoft Yahei","Hiragino Sans GB",sans-serif;}
ul,h3,p,input,form,dl，dt,dd{margin: 0;padding: 0;}
li{list-style: none ;}
a{text-decoration: none ;color: #333;display: inline-block;}
i,em{display: inline-block;}
img{border: none ;vertical-align: top;}
input{border: none ;outline: none;background:#fff; }
.fl{float: left;}
.fr{float: right;}
.clear{zoom:1;}
.clear::after{content: "";display: block;clear: both;}
{background-color: #f5f5f5;}
.top
{
width: 100%;
height: 27px;
background: url(../img/top_bg.jpg)repeat-x;
}
.top_content
{
width: 1000px;
margin:0 auto;
}
.top_content li
{
list-style-image: url(../img/li_bg.gif);
float: right;
font-size: 12px;
width:70px;
line-height: 27px;
}
.top_content a:link,.top_content a:visited
{
color: #8e8e8e;
text-decoration: none;
}
.top_content a:hover,.top_content a:active
{
color: red;
}
.wrap
{
width: 1000px;
margin: 0 auto;
}
.logo_left
{
width: 200px;
float: left;
}
.logo_right
{
width: 300px;
float: right;
height: 28px;
margin-top: 30px;
color: #8e8e8e;
}
.logo
{
height: 80px;
background-color: #fff;
}
.logo_right img
{
vertical-align: middle;
margin-right: 4px;
}
.logo_right span
{font-family: "微软雅黑";font-size: 16px;color: red;}
.nav
{
clear: both;
height: 40px;
}
.nav_left
{
width: 10px;
background: url(../img/nav_left.jpg) no-repeat;
}
.nav_mid
{
width: 980px;
background: url(../img/nav_bg.jpg)repeat-x;
}
.nav_right
{
width: 10px;
background: url(../img/nav_right.jpg) no-repeat;
}
.nav_left,.nav_mid,.nav_right
{
float: left;
height: 40px;
}
.nav_mid_left,.nav_mid_right
{
float: left;
}
.nav_mid_left
{
width: 680px;
}
.nav_mid_right
{
width: 300px;
}
.nav_mid_left li
{
float: left;
list-style-type: none;
width: 100px;
text-align: center;
line-height: 40px;
}
.nav_mid_left a
{
color: #fff;
}
.nav_mid_left a:hover
{
color: yellow;
}
.search_text
{
width: 190px;
height: 28px;
margin-top: 5px;
background: url(../img/search.jpg) no-repeat right center;
background-color: #fff;
padding-right: 25px;
border: 1px solid #fff;
}
.ad
{
height: 310px;
overflow: hidden;
}
应该是少了一个class为pic的div