function afficheId(id) {
		if (document.getElementById) document.getElementById(id).style.visibility = "visible";
		else document.all.id.style.visibility = "visible";
	}
	
	function cacheId(id) {
		if (document.getElementById) document.getElementById(id).style.visibility = "hidden";
		else document.all.id.style.visibility = "hidden";
	}