<p>Tree nodes with customized check boxes.</p>
	<div style="margin:20px 0;"></div>
	<div class="easyui-panel" style="padding:5px">
		<ul class="easyui-tree" data-options="
				url:'tree_data1.json',
				method:'get',
				animate:true,
				checkbox:function(node){
					if (node.id == 11 || node.id == 122){
						return true;
					}
				}
				"></ul>
	</div>
</body>
</html>