//Show and Hide Password overlay box.
function changeBox(show, hide) {
    document.getElementById(hide).style.display = 'none';
    document.getElementById(show).style.display = '';
    document.getElementById(show).focus();
}
function restoreBox(hide, show) {
    if (
        document.getElementById(hide).value == '') {
        document.getElementById(show).style.display = '';
        document.getElementById(hide).style.display = 'none';
        }
    }