function full_width_nav() { ?>
	<div id="nav_area" class="full_width">
		<div class="page">
			<?php thesis_nav_menu(); ?>
		</div>
	</div>
<?php }
remove_action('thesis_hook_before_header', 'thesis_nav_menu');
add_action('thesis_hook_before_content_area', 'full_width_nav');