function Change(id, Mode) {
    var Etat = document.getElementById("TR"+id).className;
    switch(Mode) {
        case "Over":
        if(Etat!="TR_Clique")
        document.getElementById("TR"+id).className="TR_Survol";
        break;

        case "Out":
        if(Etat!="TR_Clique")
        document.getElementById("TR"+id).className="TR_Normal";
        break;

        case "Click":
        if(Etat=="TR_Clique")
        document.getElementById("TR"+id).className="TR_Survol";
        else
        document.getElementById("TR"+id).className="TR_Clique";
        break;
    }
}