function montre(id, desc) {
if (document.getElementById) {
document.getElementById(id).style.display="block";
} else if (document.all) {
document.all[id].style.display="block";
} else if (document.layers) {
document.layers[id].display="block";
}
menuDesc(desc);
}

function cache(id, desc) {
if (document.getElementById) {
document.getElementById(id).style.display="none";
} else if (document.all) {
document.all[id].style.display="none";
} else if (document.layers) {
document.layers[id].display="none";
}
menuDesc(desc);
}

function menuDesc(texte)
{
	document.getElementById("menu_description" ).innerHTML  = texte;
}