Disable Download flash file popup

I’m building a website and one of my pages has an iframe which contains a flash file.

I’m including this iframe like this :


So in aflashanimation.html there’s a swf object.

But when I the website I’m building with Firefox or IE, a popup appears telling me to download the swf file.

I don’t know how to get rid of that popup.

Thanks for your help !

Source: stackoverflow-javascript