Marquee tag {wikipedia}
http://en.wikipedia.org/wiki/Marquee_tag


Compliance
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The marquee element type was first invented for Microsoft's Internet Explorer and is still supported. The Mozilla Firefox, Opera, and Safari web browsers support it for legacy page compatibility, although many other browsers do not. The tag is considered unofficial in proper XHTML or HTML. An equivalent for the tag is however being designed for the future releases of Cascading Style Sheets. [1] Similar effects can also be achieved through the use of JavaScript on a webpage.