Proj4js.defs["EPSG:23031"] = "+proj=utm +zone=31 +ellps=intl +towgs84=-136.65549,-161.4658,-167.29848,-2.093111,-0.0014055,-0.1077098,11.54611 +units=m +no_defs";
//Proj4js.defs["EPSG:23031"] = "+proj=utm +zone=31 +ellps=intl +towgs84=-84.65549,-141.4658,-147.29848,-2.093111,-0.0014055,-0.1077098,11.54611 +units=m +no_defs";
//Proj4js.defs["EPSG:23031"] = "+proj=utm +zone=31 +ellps=intl  +units=m +no_defs";
//-84,-97,-117

//-136.65549,-141.4658,-167.29848,-2.093111,-0.0014055,-0.1077098,11.54611