function toggle(item,indicator) {
if(item.style.display == 'none')
	{
	item.style.display = 'block'; 
	}
else
	{
	item.style.display = 'none';
	}
if(document.getElementById(indicator).innerHTML == '+')
	{
	document.getElementById(indicator).innerHTML = '-';
	}
else
	{document.getElementById(indicator).innerHTML = '+';
	}
}