_SURFPOINT.prototype.areaLocationHeader = function () {
    var file = "./index" + this.prefCode + ".html";
    var href_flag = (function (pref) {
            var flag = false;
            if ( pref.match(/^0[1-46]$/)
              || pref.match(/^1[68]$/)
              || pref.match(/^2[1-46-8]$/)
              || pref.match(/^3[0-47-9]$/)
            ) { flag = true; }
            return flag;
        })(this.prefCode);
    if ( href_flag ) { location.href = file; }
};
SURFPOINT.areaLocationHeader();