function mailShow(user, host) {
  document.write('<a href="mailto:' + user + '@' + host + '">');
  document.write(user + '@' + host + '</a>');
}

function mailHide(user, host,display) {
  document.write('<a href="mailto:' + user + '@' + host + '">');
  document.write('<font color=#8b000>' + display + '</font></a>');
}