��部节点展开？"},
			{ id:4, pId:3, name:"空空的父节点 1", t:"一无所有...除了我自己", isParent:true, open:false}
		];

		var log, className = "dark";
		function beforeClick(treeId, treeNode) {
			if (treeNode.isParent) {
				return true;
			} else {
				alert("这个 Demo 是用来测试 展开 / 折叠 的...\n\n去点击父节点吧... ");
				return false;
			}
		}
		function beforeCollapse(treeId, treeNode) {
			className = (className === "dark" ? "":"dark");
			showLog("[ "+getTime