This message scrolls thanks to the JavaScript "scroll" command. It can even include any html effect including hyperlinks. The effect would be even better if used in a frame with no scrollbars showing. Sure, some browsers support the marquis tag, but not all, and it's not standard html... so this is a decently compatible way to do it. The problem is that deciding at what width to end the scroll is difficult in Netscape 3 (as there is no document.width property to check). For more accuracy, one would need to use images for buttons or something else completely predictable. This could also be done vertically or even at an angle. It could also be pre-programmed to change direction/speed at particular points (e.g. a typewriter-style scrolling effect), but the result wouldn't be as reliable as desired since Netscape 3 can't guarantee how wide or tall the font is, though some of this can be circumvented with tables or images. If implemented for Netscape 4 and above, several items (such as anchors) are able to say their position on the page and could be used as "landmarks" to make decisions for speed changes and direction changes.