var totalWidth = 0;

document.getElements("#main img").each(function(el) {
		var size = el.getSize();
		totalWidth += size.x;
		document.getElementById('header').style.width = totalWidth + 200 + 'px';
		document.getElementById('container').style.width = totalWidth + 200 + 'px';
		document.getElementById('footer').style.width = totalWidth + 200 + 'px';
		document.getElementById('main').style.width = totalWidth + 200 + 'px';
	});