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

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

document.onclick=check; 
function check(e){ 
	var target = (e && e.target) || (event && event.srcElement); 
	var obj = document.getElementById('hideshow'); 
	var obj2 = document.getElementById('sho'); 
	checkParent(target)?obj.style.visibility='hidden':null; 
	target==obj2?obj.style.visibility='visible':null; 
} 

function checkParent(t){ 
	while(t.parentNode){ 
		if(t==document.getElementById('hideshow')){ 
			return false } 
		t=t.parentNode 
	} 
	return true 
}