var pos%1$s = [ %2$s, %3$s ];
var icon%1$s = new L.Icon( { iconUrl: '%4$s' } );
var marker%1$s = L.marker( pos%1$s, { icon: icon%1$s } ).addTo(mymap);

marker%1$s.on("click", function(event) {
  window.location.href = '%5$s';
});