Topic: 100% width in CSS

Suppose you want something to be width: 100% of it's container, but it requires margin/padding/border of some sort. Is there any way to achieve this with a variable width container in a standards-compliant way? (Now I see why IE 5 gets the box model wrong).

-jiblet

margin-left:10px;
margin-right:10px;

If you have a correct doctype, at least, though it might not be necessary, that should force the box to take up as much space as possible. Do *not* combine this with setting the width of the box.