function opentree(tree)
{
	var cls = '';
	if (document.getElementById) {
		var el = document.getElementById (tree);
		if (el && el.className) {
			el.className = (el.className == 'navOpened') ? 'navClosed' : 'navOpened';
		}
	}
	
}

function opentree2(tree2)
{
	var cls = '';
	if (document.getElementById) {
		var el = document.getElementById (tree2);
		if (el && el.className) {
			el.className = (el.className == 'navOpened2') ? 'navClosed2' : 'navOpened2';
		}
	}
	
}

function opentree3(tree3)
{
	var cls = '';
	if (document.getElementById) {
		var el = document.getElementById (tree3);
		if (el && el.className) {
			el.className = (el.className == 'navOpened3') ? 'navClosed3' : 'navOpened3';
		}
	}
	
}