var map;
var dwHelsinki;
var dwKouvola;
var zoom = 15;

function initialize() {
    dwHelsinki = new google.maps.LatLng(60.1704,24.9364);
    dwKouvola = new google.maps.LatLng(60.873088,26.681187);
    var mapOptions = {
        zoom: zoom,
        center: dwKouvola,
        mapTypeId: google.maps.MapTypeId.HYBRID // ROADMAP, SATELLITE, HYBRID, TERRAIN
    };
    map = new google.maps.Map(document.getElementById("map_canvas"),
        mapOptions);

    marker = new google.maps.Marker({
        position: dwHelsinki,
        map: map,
        title: "Demowall Helsinki"
    });

    marker = new google.maps.Marker({
        position: dwKouvola,
        map: map,
        title: "Demowall Kouvola"
    });
}

function getHelsinki() {
    map.setCenter(dwHelsinki);
    map.setZoom(zoom);
}

function getKouvola() {
    map.setCenter(dwKouvola);
    map.setZoom(zoom);
}