name:"随意勾选 2-2-1", checked:true},
			{ id:222, pId:22, name:"随意勾选 2-2-2"},
			{ id:223, pId:22, name:"随意勾选 2-2-3"},
			{ id:23, pId:2, name:"随意勾选 2-3", checked:true}
		];

		var clearFlag = false;
		function onCheck(e, treeId, treeNode) {
			count();
			if (clearFlag) {
				clearCheckedOldNodes();
			}
		}
		function clearCheckedOldNodes() {
			var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
			nodes = zTree.getChangeCheckedNodes();
			for (var i=0, l=nodes.length; i<l; i++) 