We've got a site where we show people a frameset page. The bottom frame contains text and a few buttons. the top frame directly loads a PDF file (by that, I mean it's not an HTML file with any sort of plugin code, the src attribute of the frame points directly to the PDF file).
If a user has "Run Active X and plugins " disabled, then that top frame just sits empty.
The PDF is downloaded by the browser (which our apache logs confirm), but then the plugin doesn't activate.
Is there a way to tell that this is happening? Because then we could output a link to the PDF file. Clicking the link works, because this would load the PDF in the external Adobe Reader application.