function initialize() {
    var map;
    var marker;
    var geocoder;
    var lat1 = 51.48628;
    var lng1 = -0.238261;
    var lat2 = 51.4961104;
    var lng2 = -0.2212915;
    var schoolString = '<div class="map-marker"><b>St Paul\'s Barnes School</b><br/>'+
        'Barnes, London SW10</div>'
    var poolString = '<div class="map-marker"><b>St Paul\'s Girls School</b><br/>'+
        'Brook Green, London W6 7BS</div>'
    var latlng1 = new google.maps.LatLng(lat1,lng1);
    var latlng2 = new google.maps.LatLng(lat2,lng2);
    var myOptions = {
        zoom: 14,
        center: latlng2,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    };
    var infowindow1 = new google.maps.InfoWindow({
        content: schoolString
    });
    var infowindow2 = new google.maps.InfoWindow({
        content: poolString
    });
    map = new google.maps.Map(document.getElementById("map_canvas"),
        myOptions);
    marker1 = new google.maps.Marker({
        position: latlng1,
        map: map
    });
    marker2 = new google.maps.Marker({
        position: latlng2,
        map: map
    });
    // If marker clicked, open window
    google.maps.event.addListener(marker1, 'click', function() {
        infowindow1.open(map,marker1);
    });
    // Open window instantly
    infowindow2.open(map,marker2);
    infowindow1.open(map,marker1);
}