function showNewsMonthLinks(year)
{
	var els=document.getElementsByTagName("*");

	for(var i=0; i<els.length; i++)
	{
		if(els[i].id.match(/^[0-9]{4,4}$/) && els[i].id != year)
		{
			els[i].style.display="none";
		}
	}

	var el = document.getElementById(year);

	if (el.style.display == "none") el.style.display = "block"; else el.style.display = "none";

	return false;
}


function displaySubTree(num)
{
    var el = document.all["subtree_" + num];
    if (el.style.display == "none") el.style.display = "block"; else el.style.display = "none";
}