var	LastActive;

function menueshow(from, which)
{
	document.getElementById('processes').style.visibility = 'hidden';
	document.getElementById('material').style.visibility = 'hidden';
	document.getElementById('supplier').style.visibility = 'hidden';
	document.getElementById('chamberhardware').style.visibility = 'hidden';
	document.getElementById('chamberprinciple').style.visibility = 'hidden';
	document.getElementById('topic').style.visibility = 'hidden';


	if (LastActive) LastActive.className = 'subpoint';
	LastActive = from;
	from.className = 'subpoint_a';
	document.getElementById(which).style.visibility = '';
}