/**
 * Cookie object, 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);
    }

    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' : '');
  }
};