function switchMenuSansIcone(obj){
		var el = document.getElementById(obj);
		if(el.style.display != "block"){
			el.style.display = "block";	
	
		}else{
			el.style.display = "none";
		}
	}
	function switchMenuAvecIcone(obj,num){
		var el = document.getElementById(obj);
		if(el.style.display != "block"){
			el.style.display = "block";	
			document.getElementById('etat'+num).src="image/gif/puce_haut.gif";
			document.getElementById('etat'+num).title="fermer";
		
		}else{
			el.style.display = "none";
			document.getElementById('etat'+num).src="image/gif/puce_bas.gif";
			document.getElementById('etat'+num).title="ouvrir";
			
		}
	}