function loadRegBox(map) {
map.addOverlay(new GPolyline([
new GLatLng(36.7878100, -3.5698105),
new GLatLng(37.2303441, -3.5698105),
new GLatLng(37.2303441, -2.9765427),
new GLatLng(36.7878100, -2.9765427),
new GLatLng(36.7878100, -3.5698105)
], "#ff0000", 5));
}