//click functions for interactivity
function Forward() {
$('#plus').click(function() {
	var cookie = readCookie('date');
	var movin_up = (cookie * 1) + 1;
	$plus = "scripts/cal.php?m=" + movin_up;
	$('#calendar').load($plus);
	
	var write_cookie = 'date=' + movin_up;
	document.cookie = write_cookie;
})}
	
function Backward() {	
$('#minus').click(function() {
	var cookie = readCookie('date');
	var movin_down = (cookie * 1) - 1;
	$plus = "scripts/cal.php?m=" + movin_down;
	$('#calendar').load($plus);
	
	var write_cookie = 'date=' + movin_down;
	document.cookie = write_cookie;
})}
	
function Return() {	
$('#return').click(function() {
	$plus = "scripts/cal.php?m=0";
	$('#calendar').load($plus);
	
	var write_cookie = 'date=0';
	document.cookie = write_cookie;
})}

//read cookie
function readCookie(name) {
	var cookiename = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(cookiename) == 0) return c.substring(cookiename.length,c.length);
	}
	return null;
}