This article needs to be updated. In particular: Dated information, mouseover events do a lot more these days.. Please update this article to reflect recent events or newly available information.(December 2018)
A special usage of mouseover event is a tooltip which shows a short description of the object under the pointer. The tooltip appears only after the mouse or stylus is held over the object for a certain amount of time.
On images, these may be produced using the HTMLtitle attribute.
<!-- Direct usage is not recommended. It does not conform with web standards. --><imgid="myImage"src="/images/myImage.jpg"onMouseOver="alert('your message');">