Ideally you would securely transfer a save of the page (which you saved on a secure computer, of course
) to your [ur=https://en.bitcoin.it/wiki/How_to_set_up_a_secure_offline_savings_wallet]offline savings wallet[/url] computer / OS.
You can then even use another computer to redownload and compare using a hash, to ensure that you haven't gotten a targeted malicious copy, however unlikely that may be.
Or compare to the signed SHA1 hash given by its author - the link to the signed message is in the page itself at the bottom.