function toggleCSS() 
	{
		var screenCSS = document.getElementById('screenCSS');
		var printCSS = document.getElementById('printCSS');
		if (screenCSS.flag == true) 
		{
			screenCSS.href = screenCSS.oldhref;
			screenCSS.flag = false;
		} 
		else 
		{
			screenCSS.oldhref = screenCSS.href;
			screenCSS.href = printCSS.href;
			screenCSS.flag = true;
		}
	}
	
	function showDiv(div,icon)
	{
		if (document.getElementById(div).style.display == 'none') 
		{ 
			document.getElementById(div).style.display = 'block';
			if (icon == true)
			{
				document.getElementById(div+'_minus').style.display = 'inline';
				document.getElementById(div+'_plus').style.display = 'none';
			}
		} 
		else
		{ 
			document.getElementById(div).style.display = 'none';
			if (icon == true)
			{
				document.getElementById(div+'_minus').style.display = 'none';
				document.getElementById(div+'_plus').style.display = 'inline';
			}
		} 
		
		return false;
	}