function changeImage(nom)
{
		nomon=nom +'on';
		if (document.layers[nomon].visibility == "hide")
		{
			nomoff=nom +'off';
			nomon=nom +'on';
		}
		else
		{
			nomoff=nom+'on';
			nomon=nom+'off';
		}
		document.layers[nomoff].visibility = 'hidden';
		document.layers[nomon].visibility = 'show';
}

function Lance()
{
	if (document.layers)
	window.open("accueilNC.html","newFenetre","toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,,,,");
	else
	window.open("accueilIE.html","newFenetre","toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,,,,l");
}