<iframe src="https://www.google.com/maps/d/embed?mid=1SWMbeb6WpUUMXqkxFG_3fKRe1DM&hl=ru" width="100%" height="480"></iframe>
function addMarker(marker) {
var marker = new google.maps.Marker({
position: marker.position,
icon: icons[marker.type].icon,
map: map,
content: marker.content
});
marker.addListener('click', function() { });