Well, that's not done with a single property and there are various ways to do it. I'll outline two ways. One way would be to simply set the desired background images for the menu's links in the style section. This will only assign a background image to the links and, it will be used by each link individually.
Another way would be to set the allowtransparent property to true for that menu:
Code:
allowtransparent:true,
Then in your style section put something like so:
Code:
#menuid table {
background-image:url('some.gif');
}
where menuid is the id property you have assigned to that menu. Like any background image, it will not show through other elements above it that have background, so the background styles must be removed from that menu's links and/or headings. The link styles are on the page (background colors you can remove, highlighted):
Code:
#menu1 a {color:black;background-color:white;text-decoration:none;text-indent:1ex;}
#menu1 a:active {color:black;text-decoration:none;}
#menu1 a:hover {color:black;background-color:#FFFF99}
#menu1 a:visited {color:black;text-decoration:none;}
The heading background-color is set by property, make it transparent:
Code:
hdingbgcolor:'transparent',
Finally, if the draw bar is to allow the background image for the table to show through, use:
Code:
barbgcolor:'transparent',
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