$res = '<div class="title">'.$this->title().'</div>';
$head = $this->head();
$head = str_replace('<cher>', $sexe ? 'Chère' : 'Cher', $head);
$head = str_replace('<prenom>', $prenom, $head);
$head = str_replace('<nom>', $nom, $head);
$res = '<div class="title">'.$this->title().'</div>';
$head = $this->head();
$head = str_replace('<cher>', $sexe ? 'Chère' : 'Cher', $head);
$head = str_replace('<prenom>', $prenom, $head);
$head = str_replace('<nom>', $nom, $head);