说明：  popwin控件(仿MSN消息框) 该控件模仿MSN 消息警告框的样式，但，它是运行于ASP.NET中的。该窗口的样式可以由用户完全控制，通过设置其颜色或预定义的窗口模式就可修改。该控件还支持窗口拖动，用户可以在窗口上的任一位置移动它。 另外一个很重要的特性是：该控件适用于多种浏览器。它已经在Microsoft IE，Mozilla Firefox和Opera上进行过测试。
(popwin control (like MSN message box) the control message MSN imitate the style of alert box, but it is in the running on ASP.NET. The style of the window can be completely controlled by the user, by setting its color or pattern of pre-defined window can be modified. The control also supports drag the window, the user can in any window on the location of moving it. Another very important characteristic is: The controls apply to a wide range of browsers. It has in Microsoft IE, Mozilla Firefox and Opera on the test.)