Syntax
window.status = string
The status property specifies the message that is displayed in the status bar.
When setting the Window.status property, be sure that your function returns true.
<html>
<a href="http://www.java2s.com"
onMouseOver="window.status='Please Visit Our Online Book!'; return true"
onMouseOut="window.status='Document: Done'"
>Click Here!</a>
</html>