显示效果如下：
代码如下：
<html>
<head><title></title></head>
<script type="text/javascript" src="jquery-1.10.2.js"></script>
<script type="text/javascript" src="jquery.ztree.all-3.5.min.js"></script>
<link href="zTreeStyle.css" rel="stylesheet" type="text/css"/>
<style type="text/css">
.ztree li span.button.pIcon01_ico_open{margin-right:2px; background: url(img/diy/1_open.png) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
.ztree li span.button.pIcon01_ico_close{margin-right:2px; background: url(img/diy/1_close.png) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
.ztree li span.button.pIcon02_ico_open, .ztree li span.button.pIcon02_ico_close{margin-right:2px; background: url(img/diy/2.png) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
.ztree li span.button.icon01_ico_docu{margin-right:2px; background: url(img/diy/3.png) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
.ztree li span.button.icon02_ico_docu{margin-right:2px; background: url(img/diy/4.png) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
.ztree li span.button.icon03_ico_docu{margin-right:2px; background: url(img/diy/5.png) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
.ztree li span.button.icon04_ico_docu{margin-right:2px; background: url(img/diy/6.png) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
.ztree li span.button.icon05_ico_docu{margin-right:2px; background: url(img/diy/7.png) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
.ztree li span.button.icon06_ico_docu{margin-right:2px; background: url(img/diy/8.png) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
</style>
<script type="text/javascript">
var setting = {
data: {
simpleData: {
enable: true
}
}
};
var zNodes =[
{ id:1, pId:0, name:"展开、折叠 自定义图标不同", open:true, iconSkin:"pIcon01"},
{ id:11, pId:1, name:"叶子节点1", iconSkin:"icon01"},
{ id:12, pId:1, name:"叶子节点2", iconSkin:"icon02"},
{ id:13, pId:1, name:"叶子节点3", iconSkin:"icon03"},
{ id:2, pId:0, name:"展开、折叠 自定义图标相同", open:true, iconSkin:"pIcon02"},
{ id:21, pId:2, name:"叶子节点1", iconSkin:"icon04"},
{ id:22, pId:2, name:"叶子节点2", iconSkin:"icon05"},
{ id:23, pId:2, name:"叶子节点3", iconSkin:"icon06"},
{ id:3, pId:0, name:"不使用自定义图标", open:true },
{ id:31, pId:3, name:"叶子节点1"},
{ id:32, pId:3, name:"叶子节点2"},
{ id:33, pId:3, name:"叶子节点3"}
];
$(document).ready(function(){
$.fn.zTree.init($("#tree"), setting, zNodes);
});
</script>
<body>
<ul id="tree" class="ztree"></ul>
</body>
</html>