> When a button on a ND page is clicked I'd like 2 things to happen:
> 1. open the browser "file download" dialog to allow user to d/l the file.
> 2. if d/l was successful,update a database table

The most powerful way to do this is to have your Java code support FTP. 
You can then transfer the bytes yourself. Run the download on a thread and
use a synchronized method to check for progress, completion, or timeout.

This also lets you do nifty things like your own download progress bar,
recoverable download, partial download, download mirroring, etc.

-Joel

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