printf("Done with URL Request. Exit Code = [%d] - Received [%d] bytes\n", aStatus, totalSize);
fprintf(stderr, "Done with URL Request. Exit Code = [%d] - Received [%d] bytes\n", aStatus, totalSize);
MyCallback(nsIURI* aURL, nsresult aStatus, PRInt32 totalSize, const PRUnichar* aMsg, void *tagData){  printf("Done with URL Request. Exit Code = [%d] - Received [%d] bytes\n", aStatus, totalSize);  return NS_OK;}