Marquee is used to create a scrolling display. It was an IE only feature, but it has been adopted by the latest Netscape browser.
<marquee> Text message and/or images here. </marquee>
Properties usable in the marquee tag are :
width - in pixels or percentage.
height - in pixels or percentage.
direction - RIGHT or LEFT or UP or DOWN.
loop - how many times to loop the message.
bgcolor - the background hex code color.
behavior - SCROLL or SLIDE or ALTERNATE.
scrollamount - a number that will control the speed. Higher number = higher speed.
Note the spelling of behavior as that is often mis-spelled.
[note : because this is a proprietary tag, it will not validate through the W3C.]