function changearea(area) {
    if (!navigator.cookieEnabled) {
        switch (area) {
            case 110:
                location.href = 'http://www.gnavi.co.jp/kanto/';
                break;
            case 120:
                location.href = 'http://www.gnavi.co.jp/kansai/';
                break;
            case 130:
                location.href = 'http://www.gnavi.co.jp/chubu/';
                break;
            case 140:
                location.href = 'http://www.gnavi.co.jp/kyushu/';
                break;
            case 150:
                location.href = 'http://www.gnavi.co.jp/hokkaido/';
                break;
            case 160:
                location.href = 'http://www.gnavi.co.jp/tohoku/';
                break;
            default:
                location.href = 'http://www.gnavi.co.jp/';
                break;
        }
    } else {
        document.cookie = 'G_Sppara=' + area;
        location.reload();
    }
}