HTML Validator

I could not find an answer in the Help or FAQ section of the W3C so I
hope that it is appropriate for me to send my question here.
 
I am in the process of validating my web site pages under HTML 4.01
transitional.  For the pages that I have changed to validate properly I
have added the W3C check box at the bottom of the page.  When I clicked
on that image it would bring up the W3C validation page with the heading
"This Page is Valid HTML 4.01 Transitional!"  
 
However, over the last couple of days, instead of displaying the HTML
page, it displays the "This Page is Valid XHTML 1.0 Strict!" even though
I have my page defined as HTML 4.01 transitional.  Why is it telling me
that the code is XHTML?
 
You can review one these pages at http://www.falconberry.com
<http://www.falconberry.com/> 
 
Thank you for your time.
 
Ron Falconberry