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

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