子界面传值到父界面不刷新修改table

//调用子界面
function add() {
		layer.open({
			type: 2,
			area: ['80%', '80%'],
			fixed: false, //不固定
			maxmin: true,
			content: 'edit2.html'
		});
	}

//返回值到父界面
parent.sx(car_lx);
      					var index = parent.layer.getFrameIndex(window.name); //先得到当前iframe层的索引
						parent.layer.close(index); //再执行关闭   

//父界面接收,并处理
function sx(car_lx) {
		var tb1 = document.getElementById('tbody');
		//获取目标<tbody id="tbody">
		var row1 = tb1.insertRow(tb1.rows.length);
		//获取即将新增的行列
		var td1 = row1.insertCell();
		td1.innerHTML = '' + car_lx+ '';
		var td2 = row1.insertCell();
		td2.innerHTML = '' + car_lx+ '';
	}
	//对已有行修改
function xg(car_lx) {
	//获取到目标值
	/*
		var objTR = obj.parentNode.parentNode;
		var currRowIndex = objTR.rowIndex;
		document.getElementById("chuanzhi").value = currRowIndex;
	*/
	var s = document.getElementById("chuanzhi").value;
		var tb1 = document.getElementById('table1');
		//<table id="table1">
		tb1.rows[s].cells[0].innerHTML = '' + car_lx+ '';
		tb1.rows[s].cells[1].innerHTML = '' + car_lx+ '';
	}