function RollOverMenu(sNom) {
  document.getElementById(sNom).src="/images/menu_" + sNom + "_on.gif";
}

function RollOutMenu(sNom) {
  document.getElementById(sNom).src="/images/menu_" + sNom + ".gif";
}




/* Langue page intro */
function RollOverLang(sNom) {
  document.getElementById(sNom).src="/images/lang_" + sNom + "_on.gif";
}

function RollOutLang(sNom) {
  document.getElementById(sNom).src="/images/lang_" + sNom + "_off.gif";
}


/* Sous-menus */
function RollOverSmenu(sNom,sDossier) {
  document.getElementById('smenu_' + sNom).src="/images/" + sDossier + "/bt_" + sNom + "_on.gif";
}

function RollOutSmenu(sNom,sDossier) {
  document.getElementById('smenu_' + sNom).src="/images/" + sDossier + "/bt_" + sNom + "_off.gif";
}