s">
.ztree li button.switch {visibility:hidden; width:1px;}
.ztree li button.switch.roots_docu {visibility:visible; width:16px;}
.ztree li button.switch.center_docu {visibility:visible; width:16px;}
.ztree li button.switch.bottom_docu {visibility:visible; width:16px;}
	</style>
 </HEAD>

<BODY>
<h1>保持展开单一路径</h1>
<h6>[ 文件路径: super/singlepath.html ]</h6>
<div class="content_wrap">
	<div class="zTreeDemoBackground left">
		<ul id="treeDemo" class="ztree"></ul>
	</div>
	<div class="right