var active = null;

function showRow(id) {
	if (active)
	{
		document.getElementById('row-' + active).style.backgroundImage = 'url(_images/row.gif)';
		document.getElementById('collapse-' + active).style.display = 'none';
	}

	if (active == id)
	{
		active = null;
	}
	else
	{
		active = id;
		document.getElementById('row-' + active).style.backgroundImage = 'url(_images/row_collapse.gif)';
		document.getElementById('collapse-' + active).style.display = 'block';
	}
}