function loadRegBox(map) {
map.addOverlay(new GPolyline([
new GLatLng(37.3718150, -2.4601675),
new GLatLng(37.9165976, -2.4601675),
new GLatLng(37.9165976, -1.9111653),
new GLatLng(37.3718150, -1.9111653),
new GLatLng(37.3718150, -2.4601675)
], "#ff0000", 5));
}