(function($){
  $.extend({
    jGFeed : function(url, fnk, num, key){
      if(url == null) return false; 
      var gurl = '/index.sko?contentsSid=1850&rssTarget=' + encodeURIComponent(url);
      $.ajax({
        url : gurl,
        type: "GET",
        dataType : "xml" ,
        timeout: 10000,
        success : function(data){
           fnk.call(this, data);
        },error : function(data){
            fnk.call(this, data);
        }
       });
   }
  });
})(jQuery);