function showhide(e)
	{
		var item = 'item' + e.substring(5);
		
		if (document.getElementById(e).style.display == 'none')
		{
			document.getElementById(e).style.display = 'block';
			document.getElementById(item).style.backgroundImage = 'url(images/arrow-o.gif)';
		}
		else
		{
			document.getElementById(e).style.display = 'none';
			document.getElementById(item).style.backgroundImage = 'url(images/arrow-c.gif)';
		}
	}