var g_lastTime = "2009";
var g_timeline = new Array();
var g_curtime = 0;

//Populate the valid dates
g_timeline[0] = "1990";
g_timeline[1] = "1993";
g_timeline[2] = "1998";
g_timeline[3] = "2001";
g_timeline[4] = "2003";
g_timeline[5] = "2004";
g_timeline[6] = "2008";
g_timeline[7] = "2009";


function isLastTime(){
	if (document.getElementById("time_active").innerHTML == g_timeline[g_timeline.length - 1])
		return true;
	else
		return false;
}

function isFirstTime(){
	if (document.getElementById("time_active").innerHTML == g_timeline[0])
		return true;
	else
		return false;
}


function incActiveTime(){
	g_curtime++;
	document.getElementById("time_active").id = "";
	var year = document.getElementsByName("time_" + g_timeline[g_curtime]);
	year[0].id = "time_active";
}

function deActiveTime(){
	g_curtime--;
	document.getElementById("time_active").id = "";
	var year = document.getElementsByName("time_" + g_timeline[g_curtime]);
	year[0].id = "time_active";
}