Titanium app - open map/navigation app in android from WebView

titanium_app.js

var Bind = function(evtName, handler){	
	Ti.App.addEventListener('app:' + evtName, handler);
};

var NavigateTo = function(e){
	Ti.Platform.openURL('http://maps.google.com/maps?daddr=' + e.dest +'&directionsmode=driving');
};

Bind('NavigateTo', NavigateTo);

webview_app.js

var Ti;

if(window.parent && window.parent.Ti){
  Ti = window.parent.Ti;
}

var Trigger = function(evtName, data){
  if(Ti){ 
    Ti.App.fireEvent('app:' + evtName, data); 
  }
};

// USAGE
Trigger('NavigateTo', { dest:  'Charlotte, NC 28273' });