help popup asp.net control

I need a popup help control for my asp.net c# aspx page. The control must be drag and drop from visual studio 2005. Simply drop a control and then define the text that will popup and a css for the popup. the control will be placed next to a form that post backs to a sql database, the function fof the control is to show the user more text of a control if needed. The control will be an image and i will provide the image. I don't want the control to cause a postback', because the form is long and a postback will cause the form to return to the top and require the user to scroll back down. The popup i snot a new window or a html style popup, the popup is more like a Div/ or Asp.net panel that will overlap existing content on the page. I am flexible of the controls implantation as long as it meets the requirements. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform ASP.NET C# Javascript AJAX