function load_polygon() {

        var encodedPolyline;
        var map = gMap;

// 5 en 10 km
        encodedPolyline = new GPolyline.fromEncoded({
  color: "#0000ff",
  weight: 4,
  opacity: 0.8,
  points: "ktiyHgbgT@D_@rAWf@a@XoBt@m@`AElAKj@[n@eD~DwBhD]n@sGlQkD|J?dASfBs@zCs@`A_@fAoDxLq@bBmDtKu@p@gAxByArEyAzDyAjBm@z@wAlK{@bCiAbC{AhBgBfEWrBa@lBq@j@oAlCu@fA}ACQ`@k@bBoAhCo@zEmAdCi@vBaCtD_ANe@`@wArCsAx@aB]cDdCuA}BoDVwBn@mBrHqCbEyAdDFxAOdFEdDk@fBgB\\oDtAyDfB{Ax@gA`@@xCc@bFQjCq@jNt@Hf@sQNgBZiCX}@`AqBnCqBhCoAhAU`CAz@Px@t@d@sB`@}B|@uC|AqDxCuFpA{Bh@sAzBeD^E\\DlAcAFmBJGBmAn@_@b@Cr@P\\?b@Yp@s@lAyBb@c@zAu@pBeDd@{@r@_BzD_El@}BhBsCfAwAnAsB`@aBpAwC|@gC`AeAjAyDtBoD`@aA`@sDnA}DtCmE^kAxBmIb@gAvBoDd@}Ar@}Fl@vAfAr@tA_ClCyI`HqS|CuHfDyHrAuEEiE`C_F[e@x@qA~AqDvA{Dn@{Bn@gDjBoKPyA[WaAVy@B?zEErB]rB",
  levels: "P@@C@CBA@CA?E@CABCABA@DAB@B?DBDBBC@DA@DD?@BBAGBACBECDDBFCBDA?CFAB?@FB?AKC@DB@FBADCBF?ACA?ADC@BD@AEAB@D@BBAEA?CBB@?GA@BBB@BBCC?C@DADBEB@B?ECDBC@B@D?CBFAD@BP",
  zoomFactor: 2,
  numLevels: 18
});
        	
        map.addOverlay(encodedPolyline);
}