proj4.defs("EPSG:3399","+proj=tmerc +lat_0=0 +lon_0=15 +k=1 +x_0=5500000 +y_0=0 +ellps=bessel +towgs84=612.4,77,440.2,-0.054,0.057,-2.797,2.55 +units=m +no_defs +type=crs");