function swapTabs(_menu_id, _el_numero) {
//	alert(_menu_id);
//	alert(_el_numero);

	var navTabs = document.getElementById(_menu_id + '_nav').getElementsByTagName('li');
	var activeTab = _el_numero-1;
	
	for (var i=0; i < navTabs.length; i++)
	{
		navTabs[i].className = '';
	}

	// One tab
	if (navTabs.length == 1)
	{
		navTabs[0].className = 'active_last';
		return;
	}
	
	// Active is first tab
	if (activeTab == 0)
	{
		navTabs[activeTab].className = 'active';
		navTabs[activeTab+1].className = 'after';
		navTabs[navTabs.length-1].className += ' last';
	}
	
	// Active is last tab
	if (activeTab == navTabs.length-1)
	{
		navTabs[0].className = 'first';
		navTabs[activeTab].className = 'active_last';
	}
	
	// Active is in the middle
	else
	{
		navTabs[0].className = 'first';
		navTabs[activeTab].className = 'active';
		navTabs[activeTab+1].className += ' after';
		navTabs[navTabs.length-1].className += ' last';
	}
	
	if ($(_menu_id + '_swapper_' + _el_numero))
	{
		for (var j=0; j <= 10; j++)
		{
			if ($(_menu_id + '_swapper_' + j))
			{
				$(_menu_id + '_swapper_' + j).style.position = 'absolute';
				$(_menu_id + '_swapper_' + j).style.top = '-9999px';
			}
		}
	
		$(_menu_id + '_swapper_' + _el_numero).style.position = 'static';
		$(_menu_id + '_swapper_' + _el_numero).style.top = '0';
	}
	
	if ($(_menu_id + '_swapper_' + _el_numero + 'a'))
	{
		for (var j=0; j <= 10; j++)
		{
			if ($(_menu_id + '_swapper_' + j + 'a'))
			{
				$(_menu_id + '_swapper_' + j + 'a').style.position = 'absolute';
				$(_menu_id + '_swapper_' + j + 'a').style.top = '-9999px';
			}
		}

		$(_menu_id + '_swapper_' + _el_numero + 'a').style.position = 'static';
		$(_menu_id + '_swapper_' + _el_numero + 'a').style.top = '0';
	}
	
}

// Charts drop down

function Navigo() {
	var popup = eval("document.NavigotronForm.elements['Navigotron']");
	var dest  = popup[popup.selectedIndex].value;
	if (dest == '') popup.selectedIndex = 0;
	else window.open(dest, '_top');
}