proj4.defs("EPSG:3907","+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9999 +x_0=5500000 +y_0=0 +ellps=bessel +towgs84=439.5,-11.77,494.976,-0.026585,-4.65641,10.155824,16.270002 +units=m +no_defs +type=crs");