[TIMOB-16457] MobileWeb: Buttons in navigation bar do not listen to click event

var tabg = Ti.UI.createTabGroup({
	backgroundColor:'white'
});

var win = Ti.UI.createWindow({

});


var tab1 = Ti.UI.createTab({
	title:'tab1',
	window:win
});


var btn = Ti.UI.createButton({
	width: Ti.UI.SIZE,
	height: Ti.UI.SIZE,
	title:'Done'
});


btn.addEventListener('click', function(){
	alert('hello');
});


win.setRightNavButton(btn);

var btn2 = Ti.UI.createButton({
	width: Ti.UI.SIZE,
	height: Ti.UI.SIZE,
	title:'Done'
});


btn2.addEventListener('click', function(){
	alert('hello');
});

win.add(btn2);

tabg.addTab(tab1);
tabg.open();