On this page > http://stones-alt.clickbump.com/riha...e-cover-shoot/

When viewed in Firefox (I'm on version 20) or IE8, the .wrap div (yellow background area) should fall below the top nav menu (as it does when viewed in Chrome, Safari or IE9+)

Any ideas what's causing the layout glitch in FF and IE8?

The nav menu is AP'd, however, I have a defined css height on the header element to clear its height.