var DivEnCours = 1;
var NbMaxDiv;

function initialiser(NbMax) {

    NbMaxDiv = NbMax;
    document.getElementById("hlPrecedent").style.visibility = "hidden";
}



function aller(lIndex) {

    if (lIndex == 1)
    {
        document.getElementById("hlPrecedent").style.visibility = "hidden";
    }
    else {
        document.getElementById("hlPrecedent").style.visibility = "visible";
    }


    if (lIndex == NbMaxDiv)
    {
        document.getElementById("hlSuivant").style.visibility = "hidden";
    }
    else {
        document.getElementById("hlSuivant").style.visibility = "visible";
    }
    
    document.getElementById("Listing" + DivEnCours).style.visibility = "hidden";
    document.getElementById("Listing" + DivEnCours).style.zIndex = 0;
    DivEnCours = lIndex;
    document.getElementById("Listing" + DivEnCours).style.visibility = "visible";
    document.getElementById("Listing" + DivEnCours).style.zIndex = 60;
    
}

function precedent() {
    document.getElementById("Listing" + DivEnCours).style.visibility = "hidden";
    document.getElementById("Listing" + DivEnCours).style.zIndex = 0;
    DivEnCours -= 1;
    aller(DivEnCours);

}
function suivant() {
    document.getElementById("Listing" + DivEnCours).style.visibility = "hidden";
    document.getElementById("Listing" + DivEnCours).style.zIndex = 0;
    DivEnCours += 1;
    aller(DivEnCours);
}