repeater1包含repeater2,我想点击repeater1中的项,来显示或隐藏repeater2该怎么写,怎么取得repeater2的对象名字啊?(ImageButton)e.Item.FindControl("imgbtn1").Attributes.Add("onclick", "document.getElementById('repeater2').style.display='none';")为什么不行啊?