gistfile1.js

// this sets the background color of the master UIView (when there are no windows/tab groups on it)
Titanium.UI.setBackgroundColor('#000');

//
// create  root window
var win = Titanium.UI.createWindow({  
    backgroundColor:'#F00',
    left: 0,
    top: 0,
    zIndex: 0
});

// Create an AdProvider - this allows a single provider to be used for multiple ads
// AdManager allows you to mix & map different Ad Providers
var adProvider = Titanium.AdManager.createProvider({
	type: "AdMob", // Extendable - allows dynamic location of new ad providers
	properties:{
		publisherID:'', // Put your publisher ID here from AdMob
		useLocation:true, 
		devMode: [Titanium.AdManager.AdMob.TEST_EMULATOR, 'something']
	}
});

// Create the Ad itself
var displayAd = adProvider.createAd({
	left:0,
	bottom:5, 
	width:Titanium.Platform.displayCaps.platformWidth, 
	zIndex:1,
	refreshInterval:30
});

// You can even attach to events - so you know when a new ad is received, failed for some reason, etc
displayAd.addEventListener('receiveRefreshAd', function(e){
	Titanium.API.info("Event Fired - receiveRefreshAd");
});

// Add it to the window Graph
win.add(displayAd);
win.open();

setTimeout(function(e){
// Example of setting a property dynamically
adProvider.setProperties({devMode:false});
},10000);