catch event rotation in android

var supportsOrientationChange = "onorientationchange" in window;
var orientationEvent = supportsOrientationChange ? "orientationchange" : "resize";

window.onload = updateOrientation();

window.addEventListener(orientationEvent, function() {
    updateOrientation();
}, false);

function updateOrientation(){
    switch(window.orientation){
    case 0:
    alert(window.outerHeight); // Returns '356' with browser chrome
    break;

    case -90:
    alert('Landscape right');
    break;

    case 90:
    alert(window.outerHeight); // Returns '208' w browser chrome
    break;

    case 180:
    //alert('Portrait view - upside down');
    break;
    }
    var orientation = (window.orientation);
}