Parsing CDATA into a document

[Yuri de Wit]

Is it possible in XSLT to parse a CDATA node into a document node (assuming
that there is a valid document in the CDATA node)?

For instance, in the following source document I would like to output the
CDATA content of INPUT as XML on the result document.

            <INPUT name="PurchaseOrder" type="???">
                        <![CDATA[<?xml version="1.0" encoding="UTF-8"?>
                                <data>
                                    <PurchaseOrder>
                                        <contact type="string" />
                                        <address type="string" />
                                        <items>
                                            <name type="string" />
                                            <price type="double" />
                                            <quantity type="int" />
                                        </items>
                                        <customer type="string" />
                                    </PurchaseOrder>
                                </data>]]>
                </INPUT>

The result should look like the following document:

            <INPUT name="PurchaseOrder" type="???">
                                <data>
                                    <PurchaseOrder>
                                        <contact type="string" />
                                        <address type="string" />
                                        <items>
                                            <name type="string" />
                                            <price type="double" />
                                            <quantity type="int" />
                                        </items>
                                        <customer type="string" />
                                    </PurchaseOrder>
                                </data>
                </INPUT>