How to remove XML declation from the document while transforming the file

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I am using DOM parser to parse my xml content.After completing the parsing, I transformed the document to a new file. But it generates a new file that had added a new line for XML declaration.\[code\]<?xml version="1.0" encoding="UTF-8" standalone="no"?><TFORMer major="1" minor="0"><!-- (c) 1998-2008 TEC-IT Datenverarbeitung GmbH -->\[/code\]In above line, the xml version declaration is automatically added by the transformer.How do I configure the transformer to not to add that XML declaration line?