Custom tooltip on Controls

I wanted to use a similar tooltip as is displayed when we over the videos on this ASP.NET Ajax site. http://www.asp.net/ajax/videos

Which control is this? Is it the animation control? How to use a si开发者_高级运维milar tootlip on my controls?

It's possibly the Popup Control from the Ajax Control Toolikit, but not necessarily. This is very simple to do with css and javascript using a hidden div element and a mouseover event.

There's some sample code you can use here: http://www.willmaster.com/blog/css/floating-layer-at-cursor-position.php

There are a lot of Jquery plug-ins that will do similar things. Here's an example of one - http://code.drewwilson.com/entry/tiptip-jquery-plugin