function em(name, host, domain, subj, cc, body) {
    if (name == "") name = "aqn";
    if (host == "") host = "panix";
    str = 'mailto:' + name + '@' + host + '.';
    if (domain == "")
	domain = 'com';
    else if (domain == "c"  ||  domain == "C")
	domain = "com";
    else if (domain == 'o'  ||  domain == 'O')
	domain = "org";
    else if (domain == 'n'  ||  domain == 'N')
	domain = "net";
    else if (domain == 'e'  ||  domain == 'E')
	domain = "edu";
    // else use "domain" as is

	str += domain;
    str += '?subject=' + subj + ' [on panix.com]';
    if (cc != null) {
        str += '&cc=' + cc;
    }
    if (body != null) {
        str += '&body=' + body;
    }

    window.location.replace(str);
}