// File: app.js
Ti.include('windows.js');

var window = Ti.UI.createWindow();

var thisWinCreated = createMyWin();//Created From Windows.js

var modalWin = Ti.UI.createWindow({
	backgroundColor:"red",
	url:thisWinCreated
});

//open a main window in a navGroup and add 1 button
var nav = Ti.UI.iPhone.createNavigationGroup({
	window:modalWin
});

window.add(nav);

var btn1 = Titanium.UI.createButton({
   title:'Test', top:100, left:20, width:200, height:30
});

modalWin.setRightNavButton(btn1);

btn1.addEventListener('click', function(e){
	thisWinCreated.open({modal:true});
});

window.open();


//File: windows.js
function createMyWin(){

	Ti.API.info('My Window has been created');

	var win = Ti.UI.createWindow({
		backgroundColor:'green',
		title:'My window created',
	});
	win.orientationModes = [
		Ti.UI.PORTRAIT,
		Ti.UI.UPSIDE_PORTRAIT
	];

	var done = Titanium.UI.createButton({
		systemButton:Titanium.UI.iPhone.SystemButton.DONE
	});

	win.setRightNavButton(done);

	done.addEventListener('click',function()
	{
		win.close();
	});

   win.addEventListener('focus', function(){

		setTimeout(function()
		{
			Ti.API.info('3 secs elapsed ... Closing Window');
			win.close();//will be closed in 3 secs ...
		},3000);

	});

	return win;
};