iOS: open window on orientation change to landscape

app.js

// Must use TiSDK 1.8.0.v20110915133349 or newer
var tabGroup = Ti.UI.createTabGroup();
var win1 = Ti.UI.createWindow({
	backgroundColor : 'white',
	orientationModes : [Ti.UI.PORTRAIT]
});
var label1 = Ti.UI.createLabel({
	text : 'I am a label'
});
win1.add(label1);
var tab1 = Ti.UI.createTab({
	title : "tab1",
	window : win1
});
tabGroup.addTab(tab1);
tabGroup.open();

var win2 = null;
Ti.Gesture.addEventListener('orientationchange', function(e) {

	if(win2 === null) {
		win2 = Ti.UI.createWindow({
			backgroundColor : 'white',
			orientationModes : [Ti.UI.LANDSCAPE_RIGHT, Ti.UI.LANDSCAPE_LEFT]
		});
		var label2 = Ti.UI.createLabel({
			text : 'I am a label'
		});
		win2.add(label2);
	}
	if(e.orientation === Ti.UI.LANDSCAPE_RIGHT || e.orientation === Ti.UI.LANDSCAPE_LEFT) {
		win2.open();
	} else {
		win2.close();
	}
});