equations questions

Hello --

I'm trying to include some simple equations in a docbook 4.4 document  
and xsl.  I don't think I need MathML since I can do what I want with  
character entities and <superscript>, et. al.

The problem I'm having is that <equation> doesn't seem to work... In  
the following snippet, the informal equation appears but the formal  
one doesn't:

     <informalequation id="pythagoras" xreflabel="Equation 0">
       <mediaobject>
	<textobject>
	  <simpara>x<superscript>2</superscript> +
	    y<superscript>2</superscript> = z<superscript>2</superscript></ 
simpara>
	</textobject>
       </mediaobject>
     </informalequation>
     <equation id="three">
       <title>Three</title>
	<mediaobject>
	  <textobject>
	    <simpara>1+1=3</simpara>
	  </textobject>
	</mediaobject>
     </equation>

The html output has the title for the formal equation, but not its body:

<div class="informalequation"><a name="pythagoras"></a><div  
class="mediaobject">
<p>x<sup>2</sup> + y<sup>2</sup> = z<sup>2</sup></p></div></div>
<div class="equation"><a name="three"></a>
<p class="title"><b>Equation&nbsp;1.1.&nbsp;Three</b></p>
<div class="mediaobject"></div></div>

Is this a bug, or am I doing something dumb?

On a related topic, is it possible to put the title of an equation on  
the same line, but to the right?  I'd really like to have an just  
automatically generated equation number, like this:

     x^2 + y^2 = z^2               (1.1)

and references to it like this:  Eq 1.1.

I'm using docbook 4.4, saxon, and the latest xsl stylesheets.

Many thanks,
         Steve


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