navvers = navigator.appVersion.substring(0,1);
if (navvers > 3)
    navok = true;
else
    navok = false;

today = new Date;
jour = today.getDay();
numero = today.getDate();
mois = today.getMonth();
if (navok)
    annee = today.getFullYear();
else
    annee = today.getYear();
TabJour = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
TabMois = new Array("january","february","march","april","may","june","july","august","september","october","november","december");
messageDate = TabJour[jour] + " " + numero + "<sup> th</sup> " + TabMois[mois] + " " + annee;