--- a/single-page.xsl	Fri May 18 15:50:06 2012 +1000
+++ b/single-page.xsl	Sat May 19 11:54:12 2012 +1000
@@ -85,6 +85,13 @@
     </xsl:attribute>
   </xsl:template>
 
+  <xsl:template match='@aria-describedby'>
+    <xsl:param name='c'/>
+    <xsl:attribute name='aria-describedby'>
+      <xsl:value-of select='concat($c, .)'/>
+    </xsl:attribute>
+  </xsl:template>
+
   <xsl:template match='h:script[@src="style/expanders.js"]'/>
   <xsl:template match='h:script[@data-script-mathjax]'/>