Mysticism.
I use XSLT for reception of the address for the reference.
<a href="{element/url}"/>
In XML i have:
<element>
<url>www.mysite.ru</url>
</element>
As a result on page I receive:
<a href="www.currentsite.ru/cursection/cursubsection/www.mysite.ru"/>
That is: in the beginning there is an address of a current site (the address of current section where we now are), and then there is a reference to an external site.
There can be it any problem with metatag BASE?
In what a trouble?