Cookie = function(){
  return {
    set : function(name, value, expires, path, domain, secure) {
      var today = new Date();
      today.setTime( today.getTime() );
      if (expires) expires = expires * 1000 * 60 * 60 * 24;
      var expires_date = new Date( today.getTime() + (expires) );
      document.cookie = name + "=" + value +
      ((expires) ? ";expires=" + expires_date.toGMTString() : "") +
      ((path) ? ";path=" + path : "") +
      ((domain) ? ";domain=" + domain : "") +
      ((secure) ? ";secure" : "");
    },
    get : function(name) {
      var start = document.cookie.indexOf( name + "=" );
      var len = start + name.length + 1;
      if((!start)&&(name != document.cookie.substring(0, name.length))){
        return null;
      }
      if(start == -1) return null;
      var end = document.cookie.indexOf( ";", len);
      if(end == -1) end = document.cookie.length;
      return document.cookie.substring(len, end);
    },
    destroy : function(name, path, domain) {
      if (getCookie(name)) document.cookie = name + "=" +
      ((path) ? ";path=" + path : "") +
      ((domain) ? ";domain=" + domain : "") +
      ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
     }
  }
}();