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