proj4.defs("EPSG:31257","+proj=tmerc +lat_0=0 +lon_0=10.3333333333333 +k=1 +x_0=150000 +y_0=-5000000 +ellps=bessel +towgs84=524.442,3.275,519.002,0.013287,-3.119714,10.232693,4.184981 +units=m +no_defs +type=crs");