interesting one for text equivalence

Hears an interesting one for text equivalence,

I put up a logo on my site using CSS, I made the CSS layer background the image (so it is CSS generated content) but the text is just CSS formatted text.

Do I need a text equivalent for the logo image?

Surely the text equivalent is the text which is completely accessible?

See left hand corner of Globalformats.com

Yours,
Lisa