Providing alternative images if Adobe Flash isn't available

Question

Are there any ways providing an alternate GIF/PNG image, in case the user has no Adobe Flash installed and/or deactivated. I’ve found recommendations, like the following fro

Answer 1

I don't know why you want to avoid javascript, it is the best solution when dealing with Flash.

using the SWFObjects Library (the best known so far for the matter) you can do this:

what the script does is replace the splashintro div with the flash file, if the browser does not support Flash, then does nothing and the splash_noflash.png will be shown.

P.S. With this technique you are ready for the iPhone, instead of showing the blue cube, it will show the image :)