(function() {

  // Defining variables that need to be available to some functions
  var map, infoWindow;

  window.onload = function() {

    // Creating a map
    var options = {  
      zoom: 3,
      center: new google.maps.LatLng(37.09, -95.71),  
      mapTypeId: google.maps.MapTypeId.ROADMAP  
    };  
    
    map = new google.maps.Map(document.getElementById('map'), options);

    // Adding a marker
    var marker = new google.maps.Marker({
      position: new google.maps.LatLng(40.756054, -73.986951),
      map: map,
      title: 'Click me'
    });

    google.maps.event.addListener(marker, 'click', function() {
    
      // Check to see if an InfoWindow already exists
      if (!infoWindow) {
        infoWindow = new google.maps.InfoWindow();
      }
      
    	var content = '<div id="info">' +
       '<img src="packers.jpg" alt="" />' + 
        '<p>Maps are awesome<br /> says Aaron Rodgers</p>' +
    	 '<p><a href="http://www.packers.com/">Packers</a></p>' +
        '</div>';

	  
	  //pass the video variable as the content for the InfoWindow
	  infoWindow.setContent(content);
	  
	  //opening the infoWindow
	  infoWindow.open(map, marker);

	
	//open infoWindow when the map loads
	google.maps.event.trigger(marker, 'click');
	});
  }
})();