function fold(section_id)
{
	var id = 'section' + section_id;
	var item = null;

	if (document.getElementById)
	{
		item = document.getElementById(id);
	}
	else if (document.all)
	{
                item = document.all[id];
	}
	else if (document.layers)
	{
		item = document.layers[id];
	}

	if (item && item.style)
	{
		if (item.style.display == "none")
		{
			item.style.display = "";
		}
		else
		{
			item.style.display = "none";
		}
	}
	else if (item)
	{
		item.visibility = "show";
	}
}