WebRoot/lib/zTree/v3/demo/en/core/expand.html

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<!DOCTYPE html>
<HTML>
<HEAD>
	<TITLE> ZTREE DEMO - beforeExpand / onExpand && beforeCollapse / onCollapse</TITLE>
	<meta http-equiv="content-type" content="text/html; charset=UTF-8">
	<link rel="stylesheet" href="../../../css/demo.css" type="text/css">
	<link rel="stylesheet" href="../../../css/zTreeStyle/zTreeStyle.css" type="text/css">
	<script type="text/javascript" src="../../../js/jquery-1.4.4.min.js"></script>
	<script type="text/javascript" src="../../../js/jquery.ztree.core-3.5.js"></script>
	<!--  <script type="text/javascript" src="../../../js/jquery.ztree.excheck-3.5.js"></script>
	  <script type="text/javascript" src="../../../js/jquery.ztree.exedit-3.5.js"></script>-->
	<SCRIPT type="text/javascript">
		<!--
		var setting = {
			view: {
				selectedMulti: false
			},
			data: {
				key: {
					title:"t"
				},
				simpleData: {
					enable: true
				}
			},
			callback: {
				beforeClick: beforeClick,
				beforeCollapse: beforeCollapse,
				beforeExpand: beforeExpand,
				onCollapse: onCollapse,
				onExpand: onExpand
			}
		};

		var zNodes =[
			{ id:1, pId:0, name:"ordinary parent 1", t:"I am ordinary, just expand or collapse on me", open:false},
			{ id:11, pId:1, name:"leaf node 1-1", t:"..."},
			{ id:12, pId:1, name:"ordinary parent 2", t:"I am ordinary, just expand or collapse on me", open:false},
			{ id:121, pId:12, name:"parent node - 121", t:"...", open:true},
			{ id:1211, pId:121, name:"parent node - 1211", t:"...", open:false},
			{ id:1212, pId:1211, name:"leaf node - 1212", t:"..."},
			{ id:1213, pId:121, name:"parent node - 1213", t:"...", open:false},
			{ id:1214, pId:1213, name:"leaf node - 1214", t:"..."},
			{ id:123, pId:12, name:"leaf node 2-3", t:"..."},
			{ id:13, pId:1, name:"leaf node  1-3", t:"..."},
			{ id:2, pId:0, name:"can't collapse me", t:"can't collapse me...Unless you use expandAll method.", open:true, collapse:false},
			{ id:21, pId:2, name:"leaf node 2-1", t:"You can't collapse my parent"},
			{ id:22, pId:2, name:"leaf node 2-2", t:"You can't collapse my parent"},
			{ id:23, pId:2, name:"leaf node 2-3", t:"You can't collapse my parent"},
			{ id:3, pId:0, name:"can't expand me", t:"can't expand me...Unless you use expandAll method.", open:false, expand:false},
			{ id:31, pId:3, name:"leaf node 3-1", t:"OMG, you can see me!! Do you use the expandAll method?"},
			{ id:32, pId:3, name:"leaf node 3-2", t:"OMG, you can see me!! Do you use the expandAll method?"},
			{ id:33, pId:3, name:"leaf node 3-3", t:"OMG, you can see me!! Do you use the expandAll method?"},
			{ id:4, pId:0, name:"empty parent 1", t:"I have nothing...", isParent:true, open:false}
		];

		var log, className = "dark";
		function beforeClick(treeId, treeNode) {
			if (treeNode.isParent) {
				return true;