function Cache(baliseId)
{
	if (document.getElementById(baliseId).style.visibility=='visible')
		{
			document.getElementById(baliseId).style.visibility='hidden';
			document.getElementById(baliseId).style.display='none';
		}
}
function Affiche(baliseId)
{
document.getElementById(baliseId).style.visibility='visible';
document.getElementById(baliseId).style.display='block';
}