function picasa_slideshow(userid, albumid, cssid) {
   google.load("feeds", "1");
   var rss = "https://picasaweb.google.com/data/feed/base/user/"
           + userid
           + "/albumid/"
           + albumid
           + "?alt=rss&kind=photo&hl=ja";
   google.setOnLoadCallback(loadrss(rss, cssid));
 }

 function loadrss(url, id) {
  return function() {
   var options = {
    displayTime: 5000,
    transistionTime: 800,
    linkTarget : google.feeds.LINK_TARGET_BLANK,
    fullControlPanel : true,
    scaleImages: true
   };
   new GFslideShow(url, id, options);
  }
 }