<style type="text/css">
body{font-size:13px;
line-height:20px;
}
a{font-size: 13px;
color: #000000;
text-decoration: none;
}
a:hover{font-size:13px;
color: #ff0000;
}
img {
vertical-align: middle;
border:0;
}
.no_circle{list-style-type:none; /*设置列表项标志的类型为无*/
display:none;
}
</style>
<script type="text/javascript">
function show(){
if(document.getElementById("art").style.display=='block'){
document.getElementById("art").style.display='none'; //触动的ul如果处于显示状态，即隐藏
}
else{
document.getElementById("art").style.display='block'; //触动的ul如果处于隐藏状态，即显示
}
}
</script>
</head>
<body>
<b><img src="images/fold.gif">树形菜单：</b>
<ul><a href="javascript:onclick=show() "><img src="images/fclose.gif">文学艺术</a></ul>
<ul id="art" class="no_circle">
<li><img src="images/doc.gif" >先锋写作</li>
<li> <img src="images/doc.gif" >小说散文</li>
<li><img src="images/doc.gif" >诗风词韵</li>
</ul>
</body>
