Images in links part could be alone without any text

In Maven, there is not an easy way to link the pages in different languages.
The site in English is completely independent to the site in French and in Spanish.
Normally, any site in different languages has a flag indicating the available languages.
I tried to do that with the links, by putting a flag image, but Maven site forces to include some text besides.
I would like have just the image, but not the text.