Add a notification bar to your website using jQuery
Many websites
display notifications or prompts in what is called as information bar or
notification bar. Such an information bar typically contains some text,
graphics or any other HTML markup along with a close button. The
information bar is always visible and is flushed with the top edge of
the browser window. Once user closes it, it remains hidden for the active
session. Such an information bar can be easily developed using jQuery.
The remainder of this article explains how.
http://www.bipinjoshi.net/articles/bbf0b5e4-1d4d-46e2-b30d-f71c659e3e10.aspx