function toggleStaffel(key)
	{
	document.getElementById("productQuantity").value=1;
	objs = document.getElementsByName('productIndex');

	for (i=0;i<objs.length;i++)
		{
		s = objs[i].id.substr(4);
		group = document.getElementById('group_' + s);

		if (!objs[i].disabled)
			{
			if (objs[i].checked) 
				{
				document.getElementById('row_' + s).className = 'selected';
				if (group)
					{
					showGroup(group);
					group.className = 'selected';
					}
				}
			else
				{
				document.getElementById('row_' + s).className = '';
				if (group)
					{
					group.style.display = 'none';
					group.className = '';
					}
				}
			}
		}
	}

function showGroup(obj)
	{
	// this is IE
	if (document.all) obj.style.display = '';
	// non IE browser
	else obj.style.display = 'table-row-group';
	}