function initialize() {
                var latlng = new google.maps.LatLng(46.888518, 19.632732);
                var myOptions = {
                    zoom: 15,
                    center: latlng,
                    mapTypeId: google.maps.MapTypeId.ROADMAP,
                    scrollwheel: false

                };
                var map = new google.maps.Map(document.getElementById("map_canvas"),
                    myOptions);
            
                var marker = new google.maps.Marker({
                    position: latlng, 
                    map: map, 
                });
                
                var contentString = 
                    '<h1 id="popuphead">Cím:</h1>'+
                    '<p id="popupbody">Dunaföldvári út 3.<br />6000 Kecskemét</p>';

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

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