function showmenu()
{
	if (document.all){
		document.all['sousmenu'].style.visibility="visible";
	}
	else if (document.getElementById){
		document.getElementById("sousmenu").style.visibility="visible";
	}
}

function hidemenu()
{
	if (document.all){
		document.all['sousmenu'].style.visibility="hidden";
	
	}
	else if (document.getElementById){
		document.getElementById('sousmenu').style.visibility="hidden";
	}
}