var show_tips_array = new Array('show_tips01', 'show_tips02', 'show_tips03', 'nav_tips0', 'nav_tips1', 'nav_tips2', 'nav_tips3', 'nav_tips4');
var show_stats_array = new Array('show_stats01', 'show_stats02', 'show_stats03', 'show_stats04', 'nav_stats0', 'nav_stats1', 'nav_stats2', 'nav_stats3', 'nav_stats4');

var nav_month_vals = new Array('nav_month0', 'nav_month1', 'nav_month2', 'nav_month3', 'nav_month4');
var nav_links = new Array('nav_link0', 'nav_link1', 'nav_link2', 'nav_link3', 'nav_link4');

var month_names = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');

function	showTips()
{
	var a = document.getElementById("calendar");
	a.style.display = 'block';
	a = document.getElementById("no-calendar");
	a.style.display = 'none';
	for (var i = 0; i < show_tips_array.length; i++)
		document.getElementById(show_tips_array[i]).value = "1";
}

function	hideTips()
{
	var a = document.getElementById("calendar");
	a.style.display = 'none';
	a = document.getElementById("no-calendar");
	a.style.display = 'block';
	for (var i = 0; i < show_tips_array.length; i++)
		document.getElementById(show_tips_array[i]).value = "0";
}

function	showStats()
{
	var a = document.getElementById("stats");
	a.style.display = 'block';
	a = document.getElementById("no-stats");
	a.style.display = 'none';
	for (var i = 0; i < show_stats_array.length; i++)
		document.getElementById(show_stats_array[i]).value = "1";
}

function	hideStats()
{
	var a = document.getElementById("stats");
	a.style.display = 'none';
	a = document.getElementById("no-stats");
	a.style.display = 'block';
	for (var i = 0; i < show_stats_array.length; i++)
		document.getElementById(show_stats_array[i]).value = "0";
}

function	nav_up()
{
	var navFirstMth = new String(navFirstMonth);
	var theMonth = navFirstMth.substring(0,2);
	var theYear = navFirstMth.substring(2,6);
	theMonth--;
	if (theMonth == 0)
	{
		theMonth = 12;
		theYear--;
	}
	var newMonth = new String(theMonth);
	if (newMonth.length < 2)
		newMonth = "0" + newMonth;
	navFirstMonth = newMonth.concat(theYear);
	navIndex++;
	regen_navbar();
}

function	nav_down()
{
	var navFirstMth = new String(navFirstMonth);
	var theMonth = navFirstMth.substring(0,2);
	var theYear = navFirstMth.substring(2,6);
	theMonth++;
	if (theMonth == 13)
	{
		theMonth = 1;
		theYear++;
	}
	var newMonth = new String(theMonth);
	if (newMonth.length < 2)
		newMonth = "0" + newMonth;
	navFirstMonth = newMonth.concat(theYear);
	navIndex--;
	regen_navbar();
}

function	regen_navbar()
{
	var theMonth = navFirstMonth.substring(0,2);
	var theYear = navFirstMonth.substring(2,6);
	for (var i = 0; i < 5; i++)
	{
		theMonth = new String(theMonth);
		if (theMonth.length < 2)
			theMonth = "0" + theMonth;
		var m = document.getElementById(nav_month_vals[i]);
		m.value = theMonth.concat(theYear);
		m = document.getElementById(nav_links[i]);
		if (i == navIndex)
			m.innerHTML = '<b>' + month_names[theMonth - 1] + ", " + theYear + '</b';
		else
			m.innerHTML = month_names[theMonth - 1] + ", " + theYear;
		theMonth++;
		if (theMonth == 13)
		{
			theMonth = 1;
			theYear++;
		}
	}
}