function initializeMaps() {
  var mapSofiaContainer = document.getElementById("sofia_map");
  maps = google.maps;
  if(mapSofiaContainer) {
    var mapSofia = new maps.Map(mapSofiaContainer, {
      mapTypeId: maps.MapTypeId.ROADMAP,
      center: new maps.LatLng(42.6796385, 23.3632427),
      zoom: 15,
      zoomControl: true,
      mapTypeControl: true,
      streetViewControl: false
    });
    var marker = new maps.Marker({
      map: mapSofia,
      animation: maps.Animation.DROP,
      position: new maps.LatLng(42.6796385, 23.3632427)
    });
  }

  var mapSunnyBeachContainer = document.getElementById("sunny_beach_map");
  if(mapSunnyBeachContainer) {
    var mapSunnyBeach = new maps.Map(mapSunnyBeachContainer, {
      mapTypeId: maps.MapTypeId.ROADMAP,
      center: new maps.LatLng(42.694807, 27.711259),
      zoom: 15,
      zoomControl: true,
      mapTypeControl: true,
      streetViewControl: false
    });
    var marker = new maps.Marker({
      map: mapSunnyBeach,
      animation: maps.Animation.DROP,
      position: new maps.LatLng(42.694807, 27.711259)
    });
  }
}

var oldLoadFunction = typeof window.onload == 'function' ? window.onload : function(){};
window.onload = function() { initializeMaps(); oldLoadFunction(); };