My asp.net web application is written in C#.
On many websites, I have seen small hyperlinks next to a form field that says “what’s this?”
When you click it, a small help dialogue box pops up and continues to be visible so long as you hold your mouse over the link. It’s usually a dialogue explaining what that part of the form is asking for.
How do I do this?
I think you are looking for a tooltip plugIn. have a look at
Personally I’ve been using qTip. There are some nice examples at qTip which should help you out!
As @uwe Keim pointed out, some of the links above are outdated. So here we are with some current links