diff --git a/ws/Docbook/CustomLayer/Common/common.xsl b/ws/Docbook/CustomLayer/Common/common.xsl
index 3377e3c12a5502199e77fd6a9ef1ff40da8e5430..7769cc72a9eaae327d3db36d4f2f74c93cd6fdfa 100644
--- a/ws/Docbook/CustomLayer/Common/common.xsl
+++ b/ws/Docbook/CustomLayer/Common/common.xsl
@@ -2,6 +2,7 @@
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:xs="http://www.w3.org/2001/XMLSchema"
   xmlns:d="http://docbook.org/ns/docbook"
+  xmlns:m="http://www.w3.org/1998/Math/MathML"
   exclude-result-prefixes="d xs"
   version="2.0">
   
@@ -65,5 +66,25 @@
         </div>                                                         <!--goik: "footer" clickable answer modification -->        
       </td>
     </tr>
-  </xsl:template>  
+  </xsl:template>
+  
+  <!-- avoid namespace prefix since some epub readers get confused. Credits to
+    http://stackoverflow.com/questions/16810039/how-to-remove-namespace-prefix-leaving-namespace-value-xslt
+  -->
+  <xsl:template match="m:math[not(@alttext)]" priority="2">
+    <xsl:element name="{local-name()}" namespace="http://www.w3.org/1998/Math/MathML">
+      <xsl:attribute name="alttext">math formula</xsl:attribute>
+      <xsl:copy-of select="@*"/>
+      <xsl:apply-templates/>
+    </xsl:element>
+  </xsl:template>
+  
+  <xsl:template match="m:*" priority="1">
+    <xsl:element name="{local-name()}" namespace="http://www.w3.org/1998/Math/MathML">
+      <xsl:copy-of select="@*"/>
+      <xsl:apply-templates/>
+    </xsl:element>
+  </xsl:template>
+  
+  
 </xsl:stylesheet>
\ No newline at end of file
diff --git a/ws/Docbook/CustomLayer/epub/hdmextensions.xsl b/ws/Docbook/CustomLayer/epub/hdmextensions.xsl
index f6a2393cda90118e969491a90a032a72f5c8db59..c01ec9e41d6bf41e233e0811f919657907111154 100644
--- a/ws/Docbook/CustomLayer/epub/hdmextensions.xsl
+++ b/ws/Docbook/CustomLayer/epub/hdmextensions.xsl
@@ -14,25 +14,7 @@
     <xsl:param name="node"/>
     <xsl:copy-of select="$toggleDisplayScript"/>    
   </xsl:template>
-  
-  <!-- avoid namespace prefix since some epub readers get confused. Credits to
-    http://stackoverflow.com/questions/16810039/how-to-remove-namespace-prefix-leaving-namespace-value-xslt
-  -->
-  <xsl:template match="m:math[not(@alttext)]" priority="2">
-    <xsl:element name="{local-name()}" namespace="http://www.w3.org/1998/Math/MathML">
-      <xsl:attribute name="alttext">math formula</xsl:attribute>
-      <xsl:copy-of select="@*"/>
-      <xsl:apply-templates/>
-    </xsl:element>
-  </xsl:template>
-  
-  <xsl:template match="m:*" priority="1">
-    <xsl:element name="{local-name()}" namespace="http://www.w3.org/1998/Math/MathML">
-      <xsl:copy-of select="@*"/>
-      <xsl:apply-templates/>
-    </xsl:element>
-  </xsl:template>
-  
+    
   <xsl:template match="d:videoobject" priority="1">
     <video controls="controls" preload="auto">
       <xsl:attribute name="title">
diff --git a/ws/Docbook/CustomLayer/slide/slideHdm.xsl b/ws/Docbook/CustomLayer/slide/slideHdm.xsl
index 8877f8f603f0d95d8be47a05b5d99701784bca0b..b0532222f3ffa1e6cbca93802cda25a32296e6c9 100644
--- a/ws/Docbook/CustomLayer/slide/slideHdm.xsl
+++ b/ws/Docbook/CustomLayer/slide/slideHdm.xsl
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"
   xmlns:xlink="http://www.w3.org/1999/xlink"  
-  xmlns:m="http://www.w3.org/1998/Math/MathML"
   xmlns:d="http://docbook.org/ns/docbook">
   
   <xsl:import href="../../docbook-xsl/xhtml/chunk.xsl"/>
@@ -11,24 +10,6 @@
   
   <xsl:import href="../Common/common.xsl"/>
 
-  <!-- avoid namespace prefix since some epub readers get confused. Credits to
-    http://stackoverflow.com/questions/16810039/how-to-remove-namespace-prefix-leaving-namespace-value-xslt
-  -->
-  <xsl:template match="m:math[not(@alttext)]" priority="2">
-    <xsl:element name="{local-name()}" namespace="http://www.w3.org/1998/Math/MathML">
-      <xsl:attribute name="alttext">math formula</xsl:attribute>
-      <xsl:copy-of select="@*"/>
-      <xsl:apply-templates/>
-    </xsl:element>
-  </xsl:template>
-  
-  <xsl:template match="m:*" priority="1">
-    <xsl:element name="{local-name()}" namespace="http://www.w3.org/1998/Math/MathML">
-      <xsl:copy-of select="@*"/>
-      <xsl:apply-templates/>
-    </xsl:element>
-  </xsl:template>
-  
   <xsl:template match="/">
     <xsl:apply-templates select="//d:chapter[contains(@annotations, 'slide')]|
       //d:section[contains(@annotations, 'slide')]"
@@ -41,13 +22,6 @@
   
   <xsl:template match="d:chapter | d:section" mode='selectedSlideSet'>
     <xsl:result-document method="xhtml" encoding="utf-8" href="Slides/{@xml:id}.html" indent="no">
-      <xsl:message>
-        <xsl:text>Processing </xsl:text>
-        <xsl:value-of select="name(.)"/>
-        <xsl:text>, id=</xsl:text>
-        <xsl:value-of select="@xml:id"/>
-      </xsl:message>
-      
       <html lang="en">
         <head>
           <title>
@@ -106,12 +80,6 @@
   
   <xsl:template match="d:chapter | d:section" mode='slideSet'>
     <xsl:result-document method="xhtml" encoding="utf-8" href="Slides/{@xml:id}.html" indent="no">
-      <xsl:message>
-        <xsl:text>Processing </xsl:text>
-        <xsl:value-of select="name(.)"/>
-        <xsl:text>, id=</xsl:text>
-        <xsl:value-of select="@xml:id"/>
-      </xsl:message>
       
       <html lang="en">
         <head>
@@ -176,7 +144,6 @@
   <xsl:template match="d:title" mode="slideDescendants"/>
   
   <xsl:template match="*" mode="slideDescendants">
-    <xsl:message>AAAAAAAAAAAAA <xsl:value-of select="name(.)"/></xsl:message>
     <section>
       <xsl:attribute name="xml:id">
         <xsl:choose>