add:  if (feed.downloadCallback) feed.downloadCallback(feed); 
context: Feed.onDownloaded = function(event) {  var request = event.target;  var url = request.channel.originalURI.spec;  debug(url + " downloaded");  var feed = gFzFeedCache[url];  if (!feed)    throw("error after downloading " + url + ": couldn't retrieve feed from request");  feed.parse();}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/5ef0114af1c3072cc921d2675b697d8ddaf8ef09/Feed.js/buggy/mail/extensions/newsblog/content/Feed.js