XML error in subdirectory

Hi,

was wondering if anyone new a trick or 2 I may be unaware about with
regards to XML in php5 which I have been running into a few problems
with.

I havea php file with a few includes and some javascript which calls a
drop down menu display when you type into a text box using div tags
generated using a query to mysql.

I recently moved the file to a subdirectory (check all links php and
javascript) but get an error:

The XML page cannot be displayed
Cannot view XML input using XSL style sheet. Please correct the error
and then click the Refresh button, or try again later.


------------------------------------------------------------ --------------------

Cannot have a DOCTYPE declaration outside of a prolog. Error
processing resource 'http://localhost/develop/proto/index.php?...

response>
would apreciate it if someone could fill me in as when I upgraded from
php4 I the XMl component of my software caused a few problems and
thought this may have something to do with my current problem.

thanks once again