/* overview */
body#overview.mainstage .hero { background-image:url(http://images.apple.com/mainstage/images/overview_hero.jpg); }

/* hero image width: 1440px */

#ac-globalnav {
	margin-left:-720px;
	left:50%;
	width:1440px;
}

@media only screen and (max-width: 1440px) {
	#ac-globalnav {
		margin-left:0;
		left:0;
		width:100%;
	}
}