how to stop progress indicator after downloading a pdf
<p>There is a link on my page to a pdf file.  Clicking on the link takes a really long time, so I'd like to throw up a progress indicator gif showing that it is something that takes a while.  But how do you hide the indicator once the pdf has been generated on the server side and finished downloading?  (basically your browser now says you are opening a pdf file and asks you what to do)</p>

<p>at this point is there an event that fires or anything I can poll to check to hide the progress indicator?</p>
