Lazy Load for Map

Hi, I am the owner of WP Fastest Cache. I want to add a feature that makes it possible to load the map after scrolling so I need to modify the following js source. do you have any filter about it?

<script data-noptimize="1">(function(w, fn){
if(w.addEventListener) w.addEventListener("DOMContentLoaded", fn, false);
else if(w.attachEvent) w.attachEvent("onload", fn);
})(window, function(){
var f=new FlexibleMap();
f.markerDirections=true;
f.markerDirectionsDiv="flxmap-5ee1e3b01d563-dir";
f.setlocale("ru-RU");
f.markerTitle="Стоматология Анны Герасименко";
f.markerDescription="ул. Белорусская 8, офис 17 г. Киев, Украина";
f.showAddress("flxmap-5ee1e3b01d563", "ул. Белорусская 8, офис 17 г. Киев, Украина");
window.flxmap_5ee1e3b01d563=f;
});
</script>