var lightsOn;

$(document).ready(function() {
	lightsOn = parseInt(readCookie('lights'), 10);	
	if(lightsOn == 0) {$('body').toggleClass('lights-off');}
	
	$('.light-switch').click(function(e) {
		$('body').toggleClass('lights-off');
		
		lightsOn = Number(!lightsOn);

		createCookie('lights',lightsOn,365);
	});
});

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

function readCookie(name) {
	var nameEQ = 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(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

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