function show_info(num) {
		var d = document;
		if (d.getElementById('info'+(num)).className == 'info_invisible')
		{
			d.getElementById('info'+(num)).className='info_visible';
			document.images["ar"+num].src="/images/ag_down.gif";
			
		}
		else
		{
			d.getElementById('info'+(num)).className='info_invisible';
			document.images["ar"+num].src="/images/ag_right.gif";		
		}		
	}