function montre(id)
{
with (document)
{
if (getElementById)
getElementById(id).style.display = 'block';
else if (all)
all[id].style.display = 'block';
else
layers[id].display = 'block';
}
}

function cache(id)
{
with (document)
{
if (getElementById)
getElementById(id).style.display = 'none';
else if (all)
all[id].style.display = 'none';
else
layers[id].display = 'none';
}
}