работа с cookie на jscript + jquery

(function($, document) {
var pluses = /\+/g;
function raw(s) {return s;}
function decoded(s) {return decodeURIComponent(s.replace(pluses, ' '));}
$.cookie = function(key, value, options) {
if (arguments.length > 1 && (!/Object/.test(Object.prototype.toString.call(value)) || value == null)) {
options = $.extend({}, $.cookie.defaults, options);
options.expires=365;
if (value == null) options.expires = -1;
if (typeof options.expires === 'number') {var days = options.expires, t = options.expires = new Date();t.setDate(t.getDate() + days);}
value = String(value);
return (document.cookie = [
encodeURIComponent(key), '=', options.raw ? value : encodeURIComponent(value),
options.expires ? '; expires=' + options.expires.toUTCString() : '',
options.path = '; path=/',
options.domain ? '; domain=' + options.domain : '',
options.secure ? '; secure' : ''
].join(''));
}
options = value || $.cookie.defaults || {};
var decode = options.raw ? raw : decoded;
var cookies = document.cookie.split('; ');
for (var i = 0, parts; (parts = cookies[i] && cookies[i].split('=')); i++) {if (decode(parts.shift()) === key) return decode(parts.join('='));}
return null;
};
$.cookie.defaults = {};
})(jQuery, document);

Использование:

$.cookie(‘key’,’value’); — запись
var value=$.cookie(‘key’); — чтение