function Post(name, domain, toplevel, show) {
var 
  a = name + '@' + domain + '.' + toplevel;
  h = '<a class="email" href="mailto: ' + a +'"';
  i = '><img src="img/email.gif">';
  f = '<\/a>';  
  if (show)
    document.write(h + i + a + f);
  else
    document.write(h + ' title="' + a + '"' + i + f);
}