how to get country name using javascript

Country Code:
document.write(geoip_country_code());

Country Name:
document.write(geoip_country_name());

City:
document.write(geoip_city());

Region:
document.write(geoip_region());

Region Name:
document.write(geoip_region_name());

Latitude:
document.write(geoip_latitude());

Longitude:
document.write(geoip_longitude());

Postal Code:
document.write(geoip_postal_code());