function compte_a_rebour(){   
    var CompteARebours = document.getElementById("CompteARebours");   
    var date_actuelle = new Date();   
    var date_evenement = new Date("May 16 19:30:00 2012");   
    var secondes = (date_evenement - date_actuelle) / 1000;   
    if(secondes > 0){   
        DiffJour = Math.floor (secondes / 86400);   
        DiffHeure = Math.floor ((secondes - (DiffJour * 86400)) / 3600);   
        DiffMin = Math.floor ((secondes - ((DiffJour * 86400 + DiffHeure * 3600))) / 60);   
        DiffSec = Math.floor (secondes - ((DiffJour * 86400 + DiffHeure * 3600 + DiffMin * 60)));   
        var Et = "et";   
        if(DiffJour == 0){   
            DiffJour = '';   
            Jour = '';   
        } else {   
            Jour = (DiffJour == 1) ? "jour," : "jours,";   
        }   
        if(DiffHeure == 0){   
            DiffHeure = '';   
            Heure = '';   
        } else {   
            Heure = (DiffHeure == 1) ? "heure," : "heures,";   
        }   
        if(DiffMin == 0){   
            DiffMin = '';   
            Minute = '';   
        } else {   
            Minute = (DiffMin == 1) ? "minute" : "minutes";   
        }   
        if(DiffSec == 0){   
            DiffSec = '';   
            Seconde = '';   
            Et = '';   
        } else {   
            Seconde = (DiffSec == 1) ? "seconde" : "secondes";   
            Et = (DiffMin == 0 && DiffHeure == 0 && DiffJour == 0) ? "" : "et";   
        }   
        CompteARebours.innerHTML = DiffJour + ' ' + Jour + ' ' + DiffHeure + ' ' + Heure + ' ' + DiffMin + ' ' + Minute + ' ' + Et + ' ' + DiffSec + ' ' + Seconde;   
    } else {   
        CompteARebours.innerHTML = 'Compte ŕ rebours terminé.';   
    }   
    Time_ReLance = setTimeout("compte_a_rebour();", 1000);   
}