toggle answers and highlighting

ws/Docbook/CustomLayer/webhelp/hdmextensions.xsl

+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+  xmlns:d="http://docbook.org/ns/docbook"
+  xmlns:m="http://www.w3.org/1998/Math/MathML"
+  xmlns="http://www.w3.org/1999/xhtml"
+  exclude-result-prefixes="d"
+  version="1.1">
+  
+  <xsl:template name="user.webhelp.head.content">
+    <xsl:param name="node"/>
+    
+          <script type="text/javascript"> <!-- goiks extension head start -->
+          function toggleDisplay(inputEl) {
+            divElem = nextSibling(inputEl);
+            if (divElem.style.visibility == 'hidden') {
+              divElem.style.visibility = 'visible';
+              inputEl.setAttribute('value','-');
+            } else {
+              divElem.style.visibility = 'hidden';
+              inputEl.setAttribute('value','+');
+            }
+          }
+          function nextSibling(n) {
+            x=n.nextSibling;
+            while (x.nodeType!=1) {
+              x=x.nextSibling;
+            }
+          return x;
+          }
+            </script>
+    
+    <xsl:if test="//m:math">
+      <script type="text/x-mathjax-config">MathJax.Hub.Config({tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']]}});</script>
+      <script src="https://prog.mi.hdm-stuttgart.de/mathjax/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+        <xsl:comment>Self closing tags disallowed!</xsl:comment>
+      </script>
+    </xsl:if>
+  </xsl:template>
+  
+  
+  <!--Allow for opening and closing of answers -->
+  
+  <xsl:template match="d:answer">
+    <xsl:variable name="deflabel">
+      <xsl:apply-templates select="." mode="qanda.defaultlabel"/>
+    </xsl:variable>
+    
+    <tr>
+      <xsl:apply-templates select="." mode="common.html.attributes"/>
+      <xsl:call-template name="id.attribute"/>
+      <td align="{$direction.align.start}" valign="top">
+        <xsl:call-template name="anchor"/>
+        <xsl:variable name="answer.label">
+          <xsl:apply-templates select="." mode="label.markup"/>
+        </xsl:variable>
+        <xsl:if test="string-length($answer.label) &gt; 0">
+          <p><strong>
+            <xsl:copy-of select="$answer.label"/>
+          </strong></p>
+        </xsl:if>
+      </td>
+      <td align="{$direction.align.start}" valign="top">
+        <input onclick="toggleDisplay(this)" type="button" value="+"/> <!--goik: start "header" clickable answer modification -->
+        <div style="visibility:hidden;">                               <!--goik: end "header" clickable answer modification -->
+          <xsl:apply-templates select="*[local-name(.) != 'label'         and local-name(.) != 'qandaentry']"/>
+        <!-- * handle nested answer/qandaentry instances -->
+        <!-- * (bug 1509043 from Daniel Leidert) -->
+        <xsl:if test="descendant::d:question">
+          <xsl:call-template name="process.qandaset"/>
+        </xsl:if>
+        </div>                                                         <!--goik: "footer" clickable answer modification -->        
+      </td>
+    </tr>
+  </xsl:template>
+  
+  
+  <xsl:template match="m:*">
+    <xsl:element name="{local-name()}">
+      <xsl:copy-of select="@*"/>
+      <xsl:apply-templates/>
+    </xsl:element>
+  </xsl:template>
+  
+  <xsl:template match="d:videodata">
+    <video controls="controls" preload="auto">
+      <xsl:attribute name="title">
+        <xsl:value-of select="normalize-space(../../../d:title)"/>
+      </xsl:attribute>
+      
+      <xsl:variable name="hdm_ImageFilename"> <!-- hdm_ prefix: do not mess with docbook! -->
+        <xsl:call-template name="mediaobject.filename">
+          <xsl:with-param name="object" select=".."/>
+        </xsl:call-template>
+      </xsl:variable>
+      
+      <source src="{$hdm_ImageFilename}" type='video/webm' />
+      <source src="{$hdm_ImageFilename}.mp4" type='video/mp4'/>
+    </video>
+  </xsl:template>
+  
+</xsl:stylesheet>

ws/Docbook/CustomLayer/webhelp/webhelpHdm.xsl

 <?xml version="1.0"?>
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-                xmlns:d="http://docbook.org/ns/docbook"
-		xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"
-                xmlns:exsl="http://exslt.org/common"
-                xmlns:set="http://exslt.org/sets"
-		version="1.0"
-                exclude-result-prefixes="doc exsl set d">
-
-<xsl:import href="../../docbook-xsl/xhtml/chunk.xsl"/>
-<xsl:import href="../../docbook-xsl/webhelp/xsl/webhelp-common.xsl"/>
-<xsl:import href="../../docbook-xsl/webhelp/xsl/titlepage.templates.xsl"/>
+  xmlns:d="http://docbook.org/ns/docbook"
+  xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"
+  xmlns:exsl="http://exslt.org/common"
+  xmlns:set="http://exslt.org/sets"
+  version="1.0"
+  exclude-result-prefixes="doc exsl set d">
+  
+  <xsl:import href="../../docbook-xsl/xhtml/chunk.xsl"/>
+  <xsl:import href="../../docbook-xsl/xhtml/highlight.xsl"/>
+  <xsl:import href="../../docbook-xsl/webhelp/xsl/webhelp-common.xsl"/>
+  <xsl:import href="../../docbook-xsl/webhelp/xsl/titlepage.templates.xsl"/>
 
+  <!--
+    -->
+  <xsl:include href="hdmextensions.xsl"/>
+  
+  
 </xsl:stylesheet>