function sh (cal, lab) {
	var tb = new Array('entree','plat','dessert');
	for(i=0;i<3;i++) {
		var div = document.getElementById(tb[i]);
		div.style.display = cal == tb[i] ? "block" : "none";
		var arempl = document.getElementById("l"+tb[i]);
		if(cal == tb[i]) arempl.innerHTML = '<a href="javascript:;" class="active" onclick="sh(\''+cal+'\',\''+lab+'\')">'+lab+'</a>';
		else { 
			orig = arempl.innerHTML;
			nouveau = orig.replace('class="active"','');
			arempl.innerHTML = nouveau;
		}
	}
	
}