Users without the Flash Plug In 1

[jocoutts]

Two queries here really.
Firstly, does anyone know the statistics of how many web users have the Flash plug-in installed?
I am tempted to create Flash buttons in my new website, but don't want to make it inaccessible to those without the plug-in.
Which leads me onto my second question, is there any JavaScript that detects whether the user has the required plug in? Therefore directing them to a HTML only page if they do not.
Sorry if this question has been answered many times before, I am restricted from looking at this site on a regular basis.

 

[oldnewbie]

http://www.macromedia.com/software/player_census/flashplayer/version_penetration.html

http://www.macromedia.com/support/flash/ts/documents/uber_detection.htm

http://www.macromedia.com/support/flash/player/flash_deployment_readme/

Regards,