var TowerLayer = {};
TowerLayer.new = func(group, name) {
var m=Layer.new(group, name, AirportModel ); #FIXME: AirportModel can be shared by Taxiways, Runways etc!!
m.setDraw( func draw_layer(layer: m, callback: draw_tower, lod:0 ) );
return m;
}
register_layer("towers", TowerLayer);