var expandedElement = null;  

	function toggle(id)
	{
		if (expandedElement != null)
			if (expandedElement.toString() != id.toString())
			{
				var e = document.getElementById(expandedElement);
				if (e)
					e.style.display = "none";
			}
			
		var o = document.getElementById(id);
		if (o)
		{
			if (o.style.display == "block")
				o.style.display = "none";
			else
			{
				o.style.display = "block";
				expandedElement = id;
			}
		}
	}