function EnvoieMail(adr1, adr2, sujet)
{
  var l
  l = "mai" + "lto:" + adr1 + "@" + adr2
  if ( sujet ) l = l + "?subject=" + sujet
  document.location = l
}

function navig()
{
    document.writeln ('<td>&gt;</td>');
    document.writeln ('<td>'+document.referrer+'</td>');
}