window.addEvent('domready', function() {  

	var togs = $$('.toggler'); //here you declare your togglers/elements array
	var elems = $$('.element'); 
	togs.each(function(el, i){ //here you set your cookie
		el.addEvent('click', function(){
			Cookie.set('voir', i);
		});	
	})

	if (Cookie.get('voir')){ //here you retrieve the cookie value if there is
		var voir = Cookie.get('voir').toInt();
	}
	else { //if there isn't, back to the default 0 value
		voir = 0;
	}


     var accordion = new Accordion(togs,elems, {  
//         start:'all-closed',
         opacity: 0,  
         onActive: function(toggler) { toggler.setStyle('color', '#ff3300'); },  
         onBackground: function(toggler) { toggler.setStyle('color', '#000000'); },
         display: voir //and there we are  
     });  
 });