function hide(Eid) 
	{
		var list = document.getElementById(Eid);
		var img = document.getElementById(Eid+'img');
		if (list.style.visibility == 'hidden')
		{
			list.style.visibility = '';
			list.style.display = 'block';
                        img.src='css/spoint.gif';
		} else {	
			list.style.visibility = 'hidden';
			list.style.display = 'none';
                        img.src='css/splus.gif';
		}
	}