Neither attribute is required. The default value for WIDTH is 100%. The height defaults to the natural height of content as it appears in the width. So, for example, this markup creates a marquee that is 200 wide and as tall as it needs to be:
<MARQUEE WIDTH=200>
Happy Halloween!<BR>
<IMG SRC="graphics/pumpkin.gif" HEIGHT=100 WIDTH=100 ALT="picture of a pumpkin">
</MARQUEE>
HSPACE sets the horizontal space to the left and right of the marquee. VSPACE sets the vertical space at the top and bottom of the marquee.
<MARQUEE WIDTH="25%" BGCOLOR=BLUE>
Howdy there!<P>
Good to see ya!
</MARQUEE>Hi There!
<MARQUEE HSPACE=10 WIDTH="25%" BGCOLOR=BLUE>
Howdy there!<P>
Good to see ya!
</MARQUEE>Hi There!
<MARQUEE HSPACE=50 WIDTH="25%" BGCOLOR=BLUE>
Howdy there!<P>
Good to see ya!
</MARQUEE>Hi There!
which give us these marquees:
Hi There!
Hi There!
Hi There!
VSPACE sets the space between the marquee and text before and after. These code examples show the default value of VSPACE (also 0) and two larger values:
Hello.
<MARQUEE BGCOLOR=BLUE>
Howdy there!
</MARQUEE>
Hi There!
Hello.
<MARQUEE VSPACE=10 BGCOLOR=BLUE>
Howdy there!
</MARQUEE>
Hi There!
Hello.
<MARQUEE VSPACE=50 BGCOLOR=BLUE>
Howdy there!</MARQUEE>
Hi There!
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:
this code
produces this
<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:
this code
produces this
<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).
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