Flash Blocking Detection Script

I have this problem…

Before I begin. I can’t search the forums right now for some reason. The search engine gives me some kind of PHP error.

I made a flash site for a client. They tell me that they got a phone call from someone who said they could not view the site because their company blocks flash.

My question is: Is there a way to detect if flash is not allowed? I know that there are flash detection scripts, but I think this might be different.

Thanks,
RMB