ASPNetToolTip: Balloon-Help, Dynamic Tool-Tip Control for ASP.NET
The ASPNetToolTip WebControl allows you to create beautiful dynamic, animated ToolTip content appear when the mouse rolls over any kind of HTML element(s). Choose from among 15 opacity fade animations for your mouseover and mouseout events. Assign Tool Tip to any ASP.NET WebControl, or declare your tooltipped content using a template. Your ToolTip and Rollover content can be anything from raw text to Flash animations and Image Buttons.