function toggle(id)
	{
	var element = document.getElementById(id);
	if(element == null)
		{
		element = document.getElementById(id + "-empty");
		}

	if(element != null)
		{
		var vis = element.style.display;
		if(vis != "block")
			element.style.display = "block";
		else
			element.style.display = "none";
		}

	return false; 
	}