/*===========================================================================
  COOKIE object
  (c) 2006, Inventive Labs

  To init the cookie object:
    var pref = new Cookie('pref', Cookie.days(30));

  Set the cookie to some value:
    pref.set(value);

  Find out the cookie value:
    pref.get();
---------------------------------------------------------------------------*/
function Cookie(key, expiry, domain, path, bSecure) {
  this.key = key;
  this.expiry = expiry;
  this.domain = domain ? domain : '.' + location.hostname.replace(/^www\./,'');
  this.path = path ? path : "/";
  this.bSecure = bSecure;
}

/* sets the value of the cookie identified by key */
Cookie.prototype.set = function (val) {
  var dough = this.key + "=" + escape(val);
  if (this.expiry){dough += "; expires="+ this.expiry.toGMTString();}
  if (this.path){dough += "; path="+this.path;}
  if (this.domain){dough += "; domain="+this.domain;}
  if (this.bSecure){dough += "; secure";}

  document.cookie = dough;
  return val;
}

/* returns the value of the cookie identified by key */
Cookie.prototype.get = function () {
  var pairs = document.cookie.split(';');
  for (var i=0;i<pairs.length;i++) {
    var p = pairs[i].replace(/^\s+/g, '');
    if (p && p.indexOf(this.key) == 0) {
      return p.substring(this.key.length+1);
    }
  }
}

/* deletes the cookie identified by key */
Cookie.prototype.nullify = function () {
  this.expiry = new Date(0);
  this.set("");
}

/* returns the date in so many days from now */ 
Cookie.days = function (days) {
  if (days) {
    var d = new Date();
    d.setTime(d.getTime() + (days * 24 * 60 * 60 * 1000));
    return d;
  }
}