xsl:id() function does not work though my document has

My Document has dtd associated, but still the id()
function does not seem to work.
Can anybody suggest me what might be wrong.
I am creating Document as below:

DOMImplementation domImpl =
dbf.newDocumentBuilder().getDOMImplementation();
DocumentType docType =
domImpl.createDocumentType("project","\"-//Test//Project
1.0//EN\"","c:/test/dtd/test.dtd");
Document newDoc =
domImpl.createDocument(null,"project",docType);

regards,
Ranjan


		
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