rem: feed.downloadCallback.onProgress(event.position, event.totalSize); 
add: feed.downloadCallback.onProgress(feed, event.position, event.totalSize); 
context: Feed.onProgress = function(event) {  var request = event.target;  var url = request.channel.originalURI.spec;  var feed = gFzFeedCache[url];  if (feed.downloadCallback)    feed.downloadCallback.onProgress(event.position, event.totalSize);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/0bd80bb067eff831a8a4ec53c7a2aa0378f85ef8/Feed.js/clean/mail/extensions/newsblog/content/Feed.js