I am trying to transform an XML document (google base feed) where it's
root element falls within a namespace.  Because of this namespace, my
simplistic XSL transformation doesn't (I'm guessing) match/select the
correct elements.

Can someone please explain the matching/selection (xpath?) syntax for
projecting some of the element's data such as <id> and
<openSearch:totalResults>?

The example google base feed is:

<?xml version='1.0'?>
<feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://
a9.com/-/spec/opensearchrss/1.0/' xmlns:gm='http://base.google.com/ns-
metadata/1.0' xmlns:g='http://base.google.com/ns/1.0'
xmlns:batch='http://schemas.google.com/gdata/batch'>
<updated>2007-05-25T18:56:07.358Z</updated>
<openSearch:totalResults>1</openSearch:totalResults>
<openSearch:startIndex>1</openSearch:startIndex>
<openSearch:itemsPerPage>25</openSearch:itemsPerPage>
<entry>
  <id>foo1</id>
</entry><entry>
  <id>foo2</id>
</entry>
</feed>

And a simplistic XSL attempting to select the <id>:

<?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
        xmlns:feed='http://www.w3.org/2005/Atom'
        version="1.0"
>
<xsl:template match="/">
        <xsl:for-each select="feed:entry">
                <xsl:value-of select="id" />
        </xsl:for-each>
</xsl:template>
</xsl:stylesheet>


Much appreciated.  Thanks,