<script>
 $(document).ready(function () {
 $('.id_de_la_region').hide();
 $('.id_button_ouvrir>a').click(function () {
 $('.id_de_la_region').slideDown();
 });
 $('.id_button_fermer>a').click(function () {
 $('.id_de_la_region').slideUp();
 });
 });
</script>