window.onload = function() { 
	var screenDimension;
	screenDimension = document.viewport.getDimensions();
	if (screenDimension.width < 1200) {
		$('page_margins_outer').setStyle({maxWidth:'74.5em'});
		$('page_margins_outer_left').setStyle({maxWidth:'64em'});
	}
	/*alert('W:'+screenDimension.width);*/
}