Simple progress bar

[Richard Wallace]

I'm trying to find a simple progress bar to use in a webapp that has to 
run a credit card transaction.  The payment gateway could take up to 30 
seconds to return a response, so I need to display something to the user 
while that is happening.  I know there is an AJAX component in the 
Blueprints catalog and in ADF Faces.  But from what I can tell from both 
of those is that they will display something like a percent done to the 
user.  What I want is more like the kind of progress bar that just gives 
the user an indication that something is going on.  It shouldn't display 
a percentage because there is no real way to determine how much time is 
actually left to finish processing the transaction.  Is there an old 
school progress indicator component out there?

Thanks,
Rich