function browserLanguage() {
  try {
    return (navigator.browserLanguage || navigator.language || navigator.userLanguage).substr(0,2)
  }
  catch(e) {
    return undefined;
  }
}

function changeLanguage(){
    var lang = browserLanguage();

    if(location.hostname != 'www.crouto.com'){
        return;
    }
	
    if(lang == 'ja'){
        location.href = '/teewee/ja/';
    }
}

(function() {
    changeLanguage();
})()