function js_email_link() {
    var opentag = String.fromCharCode(0x3C) + "a href=";
    var closetag = String.fromCharCode(0x3E) + "メッセージがあればどうぞ。" + String.fromCharCode(0x3C) + "/a" + String.fromCharCode(0x3E);
    var x0 = "mail&#";
    var x1 = "116;o:ta&#1";
    var x2 = "05;daya";
    var x3 = "5@gm&#9";
    var x4 = "7;il.co";
    var x5 = "m";

    var totaltag = opentag + x0 + x1 + x2 + x3 + x4 + x5 + closetag;
    document.write(totaltag);
}