function masquer(Ids)
{
	var tabId = Ids.split(",");
	for (var i=0;i<tabId.length;i++) {
		var targetElement = document.getElementById(tabId[i]) ;
		targetElement.style.display = "none" ;
	}
	return true
}
function montrer(Id)
{
	var targetElement = document.getElementById(Id) ;
	targetElement.style.display = "block" ;
	return true;
}