if (defined $session->param('nickname')) {
my $nickname = $session->param('nickname');
$nickname =~ s/"/"/g;
$content .= " nickname=\"$nickname\"\n";
}
if (defined $session->param('nickname')) {
my $nickname = $session->param('nickname');
$nickname =~ s/"/"/g;
$content .= " nickname=\"$nickname\"\n";
}