function initMap(users) {
  var myOptions = {
    zoom: 6,
    navigationControl: true,
    mapTypeControl: false,
    scaleControl: false,
    disableDoubleClickZoom: true,
    scrollwheel: true,
    center: new google.maps.LatLng(48.5, 19.3),
    mapTypeId: google.maps.MapTypeId.ROADMAP, // ROADMAP HYBRID
    draggable: true
  }
  var map = new google.maps.Map(document.getElementById("mapa_prehlad"), myOptions);
  var userCount = users.length - 1;
  for (var i=0; i!=userCount; i++) {
    myPos = new google.maps.LatLng(users[i][0], users[i][1]);
    marker = new google.maps.Marker({
      position: myPos,
      map: map,
      draggable: false,
      icon: "img/man.png",
      flat: true
    });
  }
}