// FUNCTION THAT HIDES ALL CALENDARS AND DISPLAYS THE CALENDAR PASSED IN 'tbl'.
function bringToFront(tbl)	{
	// HIDE ALL CALENDARS
	document.getElementById('fall').style.display = 'none';
	document.getElementById('winter').style.display = 'none';
	document.getElementById('spring').style.display = 'none';

	document.getElementById(tbl).style.display = '';
}

// ALTERNATES THE ROW COLORS OF GIVEN TABLE
function alternate(id)	{
	var table = document.getElementById(id);
	var rows = table.getElementsByTagName("tr");

	for(var i = 0; i < rows.length; i++)	{
		if(i % 2 == 0)	{
			rows[i].className = "even";
		} else	{
			rows[i].className = "odd";
		}
	}
}

// RUNS THE FUNCTIONS TO BRING THE SELECTED QUARTER FORWARD
function loadCalendar(qtr)	{
	alternate(qtr);
	bringToFront(qtr);
}