I have a plugin that, among other things, will auto download files if specific conditionas are met. I want to put up a message telling the user that files are downloading (in the even that they actually are). I've tried 'echo'ing text but the text doesn't appear on the page until after the download occurs. Why does that happen? How would I go about giving the user an indication that I'm downloading something while they're waiting for the page to load?