Pb with docbook XSL 1.66.1 (img src)

I'm using the latest docbook xsl 1.66.1, and have a problem when generating HTML, with the img src.
Indeed, the following

<imageobject><imagedata fileref="images/get_adobe_reader.gif" format="GIF"/></imageobject>

is generated as 'using the html/docbook.xsl) :

<img src="file:///D%3A/USERS/David/DocumentationDocbook/DOCUMENTATION/images/get_adobe_reader.gif">

using the 1.64.1 version, this was generated as
<img src="images/get_adobe_reader.gif">

I've tied out to use the img.src.path properties to solve the pb, without success.
How can we indicate that relative path should be used ?

Thanks for your great work on the docbook's XSL, and for for your book about them.

Thanks in advance for your response.

David.