用无序列表中的ul li加入图片之后前面有一个无序列表的点点怎么都消不去
<script src="js/myfocus-2.0.1.min.js" type="text/javascript"></script>
<script src="js/mf-pattern/mF_fancy.js" type="text/javascript"></script>
<link href="js/mf-pattern/mF_fancy.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
myFocus.set({
id:'picBox';
})
</script>
<div class="content_picture" id="picBox">
<div class="pic">
<ul>
<li><img src="img/ad2.jpg"/></li>
<li><img src="img/ad3.jpg"/></li>
<li><img src="img/ad4.jpg"/></li>
</ul>
</div>
</div>
