var myinterval		=		null;
var vitesse				=		8000;
//part le loop des messages
function messages(first,nb_msg){
	$('#msg' +first).fadeIn('slow');
	
	myinterval=window.setInterval("get_msg('"+first+"','"+nb_msg+"')",vitesse);
}

//va chercher le prochain message
function get_msg(last_msg,nb_msg){
	var next=rand_msg(last_msg,nb_msg);
	
	$('#msg'+last_msg).fadeOut('slow');
	$('#msg'+next).fadeIn('slow');
	
	window.clearInterval(myinterval);
	myinterval=window.setInterval("get_msg('"+next+"','"+nb_msg+"')",vitesse);
}

//retourne un msg au hasard
function rand_msg(last_msg,nb_msg){
	var nb=Math.round((Math.random()*nb_msg));
	
	if (nb==last_msg)
	nb=rand_msg(last_msg,nb_msg);
	
	return nb;
}