This is from the login page for our Ricoh copier. (I wish I were joking.)

ricoh-login.js

function encrypt() {
    document.form1.userid.value = base64encode(document.form1.userid_work.value);
    document.form1.password.value = base64encode(document.form1.password_work.value);
    document.form1.userid_work.value = "";
    document.form1.password_work.value = "";
}