function initialize() {
    var latlng = new google.maps.LatLng(49.468984, 18.237871);
    var mylatlng = new google.maps.LatLng(49.418984, 18.337871); 
    var myOptions = {
      zoom: 11,
      center: latlng,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    };
    var map = new google.maps.Map(document.getElementById("map_canvas"),
        myOptions);
        
      
  var contentString = '<div>'+
    '<div>'+
    '</div>'+
    '<h1>Chata Sachova studánka</h1>'+
    '<div>'+
    '<p><b>Chata Sachova studánka</b><br>' +
    'Pavel Surma <br>' +
    'Horní Bečva 556 <br>' +
    '756 57 <br>' + 
    'tel.: 774 821 999 <br>' +
    '<img src="http://www.chata-sachovka.cz/css/beskydychata.jpg">' +
    '</div>'+
    '</div>';

var infowindow = new google.maps.InfoWindow({
    content: contentString,
    maxWidth: 300
    
    
});

var marker = new google.maps.Marker({
    position: mylatlng,
    map: map,
    title:"Chata Sachovka"
});

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