google maps api help

var venue1Map,venue2Map;
function initialize() {

  var pin1Location = new google.maps.LatLng(53.79666155483624,-1.5507932901382);
  var pin2Location = new google.maps.LatLng(53.985939205000584,-1.51488971710209);


  var mapOptions = {
    zoom: 15,
    center: pin1Location,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    panControl: false,
    zoomControl: true,
    zoomControlOptions: {
      style: [google.maps.ZoomControlStyle.SMALL],
      position: google.maps.ControlPosition.TOP_RIGHT
    },

    mapTypeControl: true,
    mapTypeControlOptions: {
      style: google.maps.MapTypeControlStyle.DROPDOWN_MENU,
      position: google.maps.ControlPosition.TOP_LEFT
    },

    scaleControl: true,
    scaleControlOptions: {
      position: google.maps.ControlPosition.TOP_CENTER
    },
    streetViewControl: false,
    overviewMapControl: false,
}



  venue1Map = new google.maps.Map(document.getElementById('map'), mapOptions);
  venue2Map = new google.maps.Map(document.getElementById('map-2'), mapOptions);


  var start1Position = new google.maps.Marker({
    position: pin1Location,
    animation: google.maps.Animation.BOUNCE,
    map: venue1Map,
    icon: "https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcT2Fj0FjkkpWC1SQLvnPQ0EESWidU8p8tgn1PK5eTI1_Hw28wrzNw"
  });
  var start2Position = new google.maps.Marker({
    position: pin2Location,
    animation: google.maps.Animation.BOUNCE,
    map: venue2Map,
    icon: "https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcT2Fj0FjkkpWC1SQLvnPQ0EESWidU8p8tgn1PK5eTI1_Hw28wrzNw"
  });

    start1Position.setAnimation(google.venue1Map.Animation.BOUNCE);
    start2Position.setAnimation(google.venue1Map.Animation.BOUNCE);

}

function loadScript() {
  var script = document.createElement('script');
  script.src = 'http://maps.googleapis.com/maps/api/js?sensor=false&callback=initialize';
  document.body.appendChild(script);
}

window.onload = loadScript;