Re: Changing Attribute Value in all the ChildNodes at

   AFAIK, xsl:attribute is not a self-closing element, so if you really want to
   create an empty href attribute, at least there should be
   <xsl:attribute name="href"></xsl:attribute>


No. XML does not have a a special type of "self-closing element" (SGML
did, that was the meaning of an EMPTY element declaration in SGML)

In XML <foo></foo> is always treated the same as <foo/> a parser should
report these the same way, so

<xsl:attribute name="href"/>
is the same as
<xsl:attribute name="href"></xsl:attribute>
The XSLT system will see the same input as these will be reported in the
same way by the XML parser.

(the two suggested fixes are correct though)

David


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