function initialize() {
    var latlng = new google.maps.LatLng(46.074901554870614, 18.235250115394592);
    var myOptions = {
        zoom: 15,
        center: latlng,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    };
    var map = new google.maps.Map(document.getElementById("google_map"), myOptions);

    var marker = new google.maps.Marker({
        position: latlng,
        map: map,
        title:"Mediterrán falfestés"
    });

    var contentString = '<div>'+
        '<h1>Mediterrán falfestés</h1>'+
        '<p>'+
            '<strong>Cím:</strong> Lorem ipsum<br />'+
            '<strong>Telefonszám:</strong> Lorem ipsum<br />'+
            '<strong>E-mail:</strong> Lorem ipsum<br />'+
        '</p>'+
        '</div>';

    var infowindow = new google.maps.InfoWindow({
        content: contentString
    });

    google.maps.event.addListener(marker, 'click', function() {
        infowindow.open(map,marker);
    });
}