problem with SSL?

Hi everybody at the validator team,

as you might see on my pages (http://www.ubkmu.de/index.php) I am positively
willing to show that I care about HTML 4.01 using your suggested code
<p>
      <a href="http://validator.w3.org/check?uri=referer"><img border="0"
          src="http://www.w3.org/Icons/valid-html401"
          alt="Valid HTML 4.01!" height="31" width="88"></a>
</p>

But what can I do to avoid a mix-up of secure and not secure objects in my
contaxt form where I use https instead of http? Usual user-agent option shout
alarm which might confuse my page visitors. If I do not oversee something there
is no offer for the logo as "secure object" like
"https://www.w3.org/Icons/valid-html401". As a (bad) makeshift I took the
suggested code out of my 2 concerned pages. 8-(

I am looking forward for any help or a suggestion which would - I am sure - be
interesting for other users too.

Best regards from Berlin City!
Knut O.E. Pankrath