var _last = 1;
	
	function activer(_which) {
		
		// décolorer le dernier
		
		$("#onglet" + _last).css("background-color","#eee");
		$("#onglet" + _last).css("font-weight","normal");
		
		$("#contenu" + _last).hide("slide", { direction: "left" }, 300);
			
		_last = _which;
		
		// colorer le nouvau activ
		
		$("#onglet" + _which).css("background-color","#ddd");
		$("#onglet" + _which).css("font-weight","bold");		
		$("#contenu" + _which).show("slide", { direction: "right" }, 300);

	
	}