function soulignerSavoirPlus(id) {
   if (document.getElementById) {
        document.getElementById(id).style.textDecoration='underline'
    } else if (document.all) {
        document.all[id].style.textdecoration = "underline";
    } else if (document.layers) {
        document.layers[id].textdecoration = "underline";
    }
}

function PasSoulignerSavoirPlus(id) {
   if (document.getElementById) {
        document.getElementById(id).style.textDecoration='none'
    } else if (document.all) {
        document.all[id].style.textdecoration = "none";
    } else if (document.layers) {
        document.layers[id].textdecoration = "none";
    }
}