Two Hard Questions (at least for me)

I hope they are easy for some someone here.
I am using IBM's XML parser and the Lotus XSL parser.

1.  How to match null
I want to match any node with no data.
    example:
	<field1>data</field1>
	<field2></field2>

How do I match field2's null.  I have tried the following with no luck.
<xsl:template match="*[not(text())]">
  NULL VALUE
</xsl:template> 

2. How do I include an '&' in the resulting HTML.  I am trying to create a
query string, Servlet?data1=foo&data2=bar.
The XML looks something like this.
<some_data>The Data
  <link servlet="SomeServlet" Query="?data1=foo&data2=bar"/>
</some_data>

I want to ouput <A HREF="Query?data1=foo&data2=bar">The Data</A>

TIA, 
Ross Cormier


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