function show_gamme(i) {
	cpt = 1;
	while (document.getElementById('liste_gamme_' + cpt) != null) {
		if (cpt != i)
			document.getElementById('liste_gamme_' + cpt).style.display = 'none';
		cpt++;
	}
	
	if (document.getElementById('liste_gamme_' + i).style.display == "block")
		document.getElementById('liste_gamme_' + i).style.display = "none";
	else
		document.getElementById('liste_gamme_' + i).style.display = "block";
			
}