// Orientation
window.addEventListener('load', setOrientation, false);
window.addEventListener('orientationchange', setOrientation, false);
function setOrientation(){
    var orient = Math.abs(window.orientation) === 90 ? 'landscape' : 'portrait';
    var cl = document.body.className;
    cl = cl.replace(/portrait|landscape/, orient);
    document.body.className = cl;
}