This article describes a popular ASP.NET popup control that imitates the MSN Messenger alert (when a user logs on/off a tiny windows slides into the bottom right of your screen with a messages), but it is designed for use in an ASP.NET web page. Graphical appearance of this control can be completely changed by using one of predefined styles or by modifying all colors used on the control.

The control works with latest version of Mozilla, Firefox, Internet Explorer and Opera. You can also use HTML in the control properties, in order to include graphics or anything else.

read more: http://www.codeproject.com/aspnet/asppopup.asp