window.onload = function() {

    var email = getMailAddress();

    var emailElement = document.createElement("a");
    emailElement.setAttribute("href", "mailto:" + email);
    emailElement.appendChild(document.createTextNode(email));

    document.getElementById("head").appendChild(emailElement);
};

function getMailAddress() {
    var mail = new Array(16); // []
    mail[0]  = "i";
    mail[14] = "h";
    mail[13] = ".";
    mail[1]  = "n";
    mail[11] = "c";
    mail[7]  = "g";
    mail[5]  = "m";
    mail[6]  = "e";
    mail[4]  = "@";
    mail[9]  = "t";
    mail[2]  = "f";
    mail[10] = "e";
    mail[3]  = "o";
    mail[12] = "h";
    mail[8]  = "a";
    mail[15] = "k";
    return mail.join("");
}