function hideDiv(nomPopup) 
{ 
	if (document.getElementById) 
	{ 
		// DOM3 = IE5, NS6 
		document.getElementById(nomPopup).style.visibility = 'hidden'; 
	} 
	else 
	{ 
		if (document.layers) 
		{ 
			// Netscape 4 
			document.nomPopup.visibility = 'hidden'; 
		} 
		else 
		{ 	
			// IE 4 
			document.all.nomPopup.style.visibility = 'hidden'; 
		} 
	} 
}

function showDiv(nomPopup) 
{ 
	if (document.getElementById) 
	{ 
		// DOM3 = IE5, NS6 
		document.getElementById(nomPopup).style.visibility = 'visible'; 
	} 
	else 
	{ 
		if (document.layers) 
		{ 
			// Netscape 4 
			document.nomPopup.visibility = 'visible'; 
		} 
		else 
		{ 
			// IE 4 
			document.all.nomPopup.style.visibility = 'visible'; 
		} 
	} 
}