Attribute for <MARQUEE ...>

BEHAVIOR = SCROLL | SLIDE | ALTERNATE

BEHAVIOR indicates how the contents scroll.

BEHAVIOR=SCROLL, which is the default, indicates that the content should scroll off the edge of the marquee area, then reappear on the other side:

<MARQUEE BEHAVIOR=SCROLL>

BEHAVIOR=SLIDE is almost the same, except that it indicates that when the leading part content reaches the left edge it should stop without scrolling off. Notice in this example that the contents stop scrolling as soon as the "H" reaches the left side:

<MARQUEE BEHAVIOR=SLIDE>

BEHAVIOR=ALTERNATE makes the content bounce back and forth, all of it remaining visible all the time (assuming of course that it all fits).

<MARQUEE BEHAVIOR=ALTERNATE>