var dd, delai;

        function calculeHeure(decalage) {
            var hfmfsf = "", min, sec;
            var adate = new Date() ;
            hfmfsf += adate.getHours() + (adate.getTimezoneOffset() / 60) + decalage;
            if (hfmfsf>=24){hfmfsf=hfmfsf-24;}
            if (hfmfsf < 10) hfmfsf = "0" + hfmfsf;
            min = adate.getMinutes();
            if (min < 10) {
                hfmfsf += ":0" + min;
            }
            else {
                hfmfsf += ":" + min;
            }
            return hfmfsf;
        }

        function debuteTemps(delai1) {

            document.getElementById("heure1").innerHTML = calculeHeure(2) ;

            document.getElementById("heure2").innerHTML = calculeHeure(-4) ;

            document.getElementById("heure4").innerHTML = calculeHeure(4) ;

            dd = setTimeout("debuteTemps(delai)",delai1);
     }