// Cookie Manager
// http://jason.pureconcepts.net/articles/javascript_cookie_object
var Cookie = {
	data: {},
	options: {expires: 1, domain: "", path: "", secure: false},

	init: function(options, data) {
		Cookie.options = Object.extend(Cookie.options, options || {});

		var payload = Cookie.retrieve();
		if(payload) {
			Cookie.data = payload.evalJSON();
		} else {
			Cookie.data = data || {};
		}
		Cookie.store();
	},
	getData: function(key) {
		return Cookie.data[key];
	},
	setData: function(key, value) {
		Cookie.data[key] = value;
		Cookie.store();
	},
	removeData: function(key) {
		delete Cookie.data[key];
		Cookie.store();
	},
	retrieve: function() {
		var start = document.cookie.indexOf(Cookie.options.name + "=");

		if(start == -1) {
			return null;
		}
		if(Cookie.options.name != document.cookie.substr(start, Cookie.options.name.length)) {
			return null;
		}

		var len = start + Cookie.options.name.length + 1;
		var end = document.cookie.indexOf(';', len);

		if(end == -1) {
			end = document.cookie.length;
		}
		return unescape(document.cookie.substring(len, end));
	},
	store: function() {
		var expires = '';

		if (Cookie.options.expires) {
			var today = new Date();
			expires = Cookie.options.expires * 86400000;
			expires = ';expires=' + new Date(today.getTime() + expires).toGMTString();
		}
		document.cookie = Cookie.options.name + '=' + escape(Object.toJSON(Cookie.data)) + Cookie.getOptions() + expires+';';
	},
	erase: function() {
		document.cookie = Cookie.options.name + '=' + Cookie.getOptions() + ';expires=Thu, 01-Jan-1970 00:00:01 GMT';
	},
	getOptions: function() {
		return (Cookie.options.path ? ';path=' + Cookie.options.path : '') + (Cookie.options.domain ? ';domain=' + Cookie.options.domain : '') + (Cookie.options.secure ? ';secure' : '');
	}
};