function initialize()
{
    if(GBrowserIsCompatible())
    {
        var map = new GMap2(document.getElementById("google_map"));
        map.addControl(new GLargeMapControl());
		//map.addControl(new GMapTypeControl());

        var mapCenter = new GLatLng(47.502561894761605,19.107177257537842);
        map.setCenter(mapCenter, 16);

        var windowHtml = '';

        windowHtml += '<div style="width: 240px; height: 50px; padding: 0;">';
        windowHtml += 'Metró Reklám Kommunikációs Kft.<br />';
        windowHtml += '1143 Budapest, Stefánia út 1.';
        windowHtml += '</div>';

        var marker = new GMarker(map.getCenter());
        map.addOverlay(marker);
        GEvent.addListener(marker, "click", function() {
            marker.openInfoWindowHtml(windowHtml, {noCloseOnClick:true});
        });

        marker.openInfoWindowHtml(windowHtml, {noCloseOnClick:true});
    }
}