var bodyColor;

function easterEggColor() {
	if (document.body.className == 'blue')
		document.body.className = 'red';
	else if (document.body.className == 'red')
		document.body.className = 'green';
	else if (document.body.className == 'green')
		document.body.className = 'blue';

	bodyColor = document.body.className;
	
	writeCookie("egg-basket", bodyColor, 14);
}

function setBodyColor() {
	bodyColor =  readCookie("egg-basket");
	if (bodyColor)
		document.body.className = readCookie("egg-basket");
}

function writeCookie(name, value, days) {
	var expires = "";
	
	if (days) {
		var date = new Date();
		date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
		expires = "; expires=" + date.toGMTString();
	}
	
	document.cookie = name + "=" + value + expires + "; path=/";
}

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

function eraseCookie(name) {
	writeCookie(name, "", -1);
}

window.onload = function() {
	setBodyColor();
}