function writeEmail(prefix, name, suffix) {
    var address;
    var address2;

    address2 = name;

    if (suffix != null)
	address = prefix + '@' + suffix;
    else
	address = prefix + '@astro.umn.edu';

    document.write('<a href="mailto:' + address + '">' + address2 + '</a>');

    return true;
}