I've seen a problem with both firefox and chrome where the CSS code is rendering extra background space.
When the browser's on full size (on a 1440x900), it tends to render everything properly. When I switch it from full size to windowed to about half the size. When it's in this smaller window, the website renders two scrollbars, one for the main content, then another one around the whole content. Whole content meaning the footer plus the lower sections and the header + navigation. The scroll bar that the browser renders is actually not preferred because it create gray space behind the content that can't stretch out as some of it is fixed size (like the header images).
What's the best solution around this? I would like to create a more visually scalable website.