var tab_years = new Object();
tab_years["stat"] = 'tstat';
tab_years["y2004"] = 't2004';
tab_years["y2005"] = 't2005';
tab_years["y2006"] = 't2006';
tab_years["y2007"] = 't2007';
tab_years["y2008"] = 't2008';
tab_years["y2009"] = 't2009';
tab_years["y2010"] = 't2010';
tab_years["y2011"] = 't2011';
tab_years["y2012"] = 't2012';
tab_years["y2013"] = 't2013';
tab_years["y2014"] = 't2014';
tab_years["y2015"] = 't2015';


function hide_element(id)
{
	var e = document.getElementById(id);
	e.style.display = 'none';
	return;
}

function show_element(id)
{
	var e = document.getElementById(id);
	e.style.display = 'block';
	return;
}

function select_tab(year)
{
	var e_tab = tab_years[year];
	var ae = document.getElementById(e_tab);
	
	for (var d_tab in tab_years)
	{
		var e = document.getElementById(tab_years[d_tab]);
		
		if(e)	// if tXXXX exists
		{
			e.className = 'unselected';
			hide_element(d_tab);
		}
	}
	
	ae.className = 'selected';
	show_element(year);
	
	return;
}