Io non so se il sito usi Flash, poco ma sicuro che il codice presente nella pagina che hai indicato fa dei controlli sulla versione del plugin Flash.
var flashCheckCode = MM_FlashDetect(
/*version of Flash software used to author content*/
6.0,
/*Boolean indicating whether to require latest revision of player (plug-in only)*/
true,
/*Boolean indicating whether to install if player is not installed*/
!MM_FlashUserDemurred(),
/*Boolean indicating that the auto-installation should not occur and that the user will go to the installURL or to the upgradeURL as specified*/
true
);
/* flashCheckCode = 1: Required Version of Flash Plug-in is installed on user`s computer */
/* flashCheckCode = 2: Old Version of Flash Plug-in is installed on user`s computer */
/* flashCheckCode = 3: Flash Plug-in is NOT installed on user`s computer */