window.onorientationchange = function() {
	var orientation = window.orientation;
	switch(orientation) {
		case 0:		document.body.setAttribute("class", "portrait");		break;
		case 90:	document.body.setAttribute("class", "landscapeLeft");	break;
   		case -90: 	document.body.setAttribute("class", "landscapeRight");	break;
	}
}