diff --git a/unpacked/MathJax.js b/unpacked/MathJax.js
index e2db6defb..f8b22b17e 100644
--- a/unpacked/MathJax.js
+++ b/unpacked/MathJax.js
@@ -3105,11 +3105,13 @@ MathJax.Hub.Startup = {
     isMac:       (navigator.platform.substr(0,3) === "Mac"),
     isPC:        (navigator.platform.substr(0,3) === "Win"),
     isMSIE:      ("ActiveXObject" in window && "clipboardData" in window),
+    isEdge:      ("MSGestureEvent" in window && "chrome" in window &&
+                     window.chrome.loadTimes == null),
     isFirefox:   (!!AGENT.match(/Gecko\//) && !AGENT.match(/like Gecko/)),
     isSafari:    (!!AGENT.match(/ (Apple)?WebKit\//) && !AGENT.match(/ like iPhone /) &&
-                     (!window.chrome || window.chrome.loadTimes == null)),
-    isChrome:    (window.chrome != null && window.chrome.loadTimes != null),
-    isOpera:     (window.opera != null && window.opera.version != null),
+                     (!window.chrome || window.chrome.app == null)),
+    isChrome:    ("chrome" in window && window.chrome.loadTimes != null),
+    isOpera:     ("opera" in window && window.opera.version != null),
     isKonqueror: ("konqueror" in window && navigator.vendor == "KDE"),
     versionAtLeast: function (v) {
       var bv = (this.version).split('.'); v = (new String(v)).split('.');
@@ -3137,7 +3139,7 @@ MathJax.Hub.Startup = {
       HUB.Browser = HUB.Insert(new String(browser),BROWSERS);
       var VERSION = new RegExp(
         ".*(Version/| Trident/.*; rv:)((?:\\d+\\.)+\\d+)|" +                      // for Safari, Opera10, and IE11+
-        ".*("+browser+")"+(browser == "MSIE" ? " " : "/")+"((?:\\d+\\.)*\\d+)|"+  // for one of the main browser
+        ".*("+browser+")"+(browser == "MSIE" ? " " : "/")+"((?:\\d+\\.)*\\d+)|"+  // for one of the main browsers
         "(?:^|\\(| )([a-z][-a-z0-9._: ]+|(?:Apple)?WebKit)/((?:\\d+\\.)+\\d+)");  // for unrecognized browser
       var MATCH = VERSION.exec(xAGENT) || ["","","","unknown","0.0"];
       HUB.Browser.name = (MATCH[1] != "" ? browser : (MATCH[3] || MATCH[5]));
@@ -3191,8 +3193,15 @@ MathJax.Hub.Startup = {
                           AGENT.match(/ Fennec\//) != null ||
                           AGENT.match(/Mobile/) != null);
     },
+    Chrome: function (browser) {
+      browser.noContextMenu = browser.isMobile = !!navigator.userAgent.match(/ Mobile[ \/]/);
+    },
     Opera: function (browser) {browser.version = opera.version()},
+    Edge: function (browser) {
+      browser.isMobile = !!navigator.userAgent.match(/ Phone/);
+    },
     MSIE: function (browser) {
+      browser.isMobile = !!navigator.userAgent.match(/ Phone/);
       browser.isIE9 = !!(document.documentMode && (window.performance || window.msPerformance));
       MathJax.HTML.setScriptBug = !browser.isIE9 || document.documentMode < 9;
       MathJax.Hub.msieHTMLCollectionBug = (document.documentMode < 9);
diff --git a/unpacked/extensions/HelpDialog.js b/unpacked/extensions/HelpDialog.js
index 292f15d1f..e26d0367e 100644
--- a/unpacked/extensions/HelpDialog.js
+++ b/unpacked/extensions/HelpDialog.js
@@ -161,8 +161,8 @@
       ]],
       ["a",{href:"http://www.mathjax.org/"},["www.mathjax.org"]],
       ["span",{id: "MathJax_HelpClose", onclick: HELP.Remove,
-               onkeydown: HELP.Keydown, tabIndex: 0, "aria-label": "Close",
-               "aria-describedby": LOCALE._(["HelpDialog","CloseWindow"],"Close window")},
+               onkeydown: HELP.Keydown, tabIndex: 0, role: "button",
+	       "aria-label": LOCALE._(["HelpDialog","CloseWindow"],"Close window")},
         [["span",{},["\u00D7"]]]
       ]
     ]));
diff --git a/unpacked/extensions/MathML/mml3.js b/unpacked/extensions/MathML/mml3.js
index 575953eea..90a98f59b 100644
--- a/unpacked/extensions/MathML/mml3.js
+++ b/unpacked/extensions/MathML/mml3.js
@@ -72,17 +72,661 @@ MathJax.Hub.Register.StartupHook("MathML Jax Ready",function () {
   });
 
   /*
-   *  The following is taken from mml3mj.xsl 
-   *  (https://web-xslt.googlecode.com/svn/trunk/ctop/mml3mj.xsl)
+   *  The following is derived from mml3mj.xsl
+   *  (https://github.com/davidcarlisle/web-xslt/blob/master/ctop/mml3mj.xsl)
    *  which is Copyright (c) David Carlisle 2008-2015.
    *  It is used by permission of David Carlisle, who has agreed to allow it to
    *  be released under the Apache License, Version 2.0.
    */
-  var mml3Stylesheet = '<x:stylesheet version="1.0" xmlns:x="http://www.w3.org/1999/XSL/Transform" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns="http://www.w3.org/1998/Math/MathML" xmlns:c="http://exslt.org/common" exclude-result-prefixes="m c"><ms:script language="JScript" implements-prefix="c" xmlns:ms="urn:schemas-microsoft-com:xslt"> this[\'node-set\'] =  function (x) {  return x;  }</ms:script><x:output indent="yes" omit-xml-declaration="yes"/><x:template match="*"><x:copy><x:copy-of select="@*"/><x:apply-templates/></x:copy></x:template><x:template match="*[@dir=\'rtl\']"  priority="10"><x:apply-templates mode="rtl" select="."/></x:template><x:template match="@*" mode="rtl"><x:copy-of select="."/></x:template><x:template match="*" mode="rtl"><x:copy><x:apply-templates select="@*" mode="rtl"/><x:for-each select="node()"><x:sort data-type="number" order="descending" select="position()"/><x:text></x:text><x:apply-templates mode="rtl" select="."/></x:for-each></x:copy></x:template><x:template match="@open" mode="rtl"><x:attribute name="close"><x:value-of select="."/></x:attribute></x:template><x:template match="@open[.=\'(\']" mode="rtl"><x:attribute name="close">)</x:attribute></x:template><x:template match="@open[.=\')\']" mode="rtl"><x:attribute name="close">(</x:attribute></x:template><x:template match="@open[.=\'[\']" mode="rtl"><x:attribute name="close">]</x:attribute></x:template><x:template match="@open[.=\']\']" mode="rtl"><x:attribute name="close">[</x:attribute></x:template><x:template match="@open[.=\'{\']" mode="rtl"><x:attribute name="close">}</x:attribute></x:template><x:template match="@open[.=\'}\']" mode="rtl"><x:attribute name="close">{</x:attribute></x:template><x:template match="@close" mode="rtl"><x:attribute name="open"><x:value-of select="."/></x:attribute></x:template><x:template match="@close[.=\'(\']" mode="rtl"><x:attribute name="open">)</x:attribute></x:template><x:template 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order="descending" select="position()"/><x:apply-templates select="."  mode="rtl"/><x:apply-templates select="following-sibling::*[1]"  mode="rtl"/></x:for-each></mmultiscripts></x:template><x:template match="text()[.=\'(\']" mode="rtl">)</x:template><x:template match="text()[.=\')\']" mode="rtl">(</x:template><x:template match="text()[.=\'{\']" mode="rtl">}</x:template><x:template match="text()[.=\'}\']" mode="rtl">{</x:template><x:template match="text()[.=\'&lt;\']" mode="rtl">&gt;</x:template><x:template match="text()[.=\'&gt;\']" mode="rtl">&lt;</x:template><x:template match="text()[.=\'&#x2208;\']" mode="rtl">&#x220b;</x:template><x:template match="text()[.=\'&#x220b;\']" mode="rtl">&#x2208;</x:template><x:template match="@notation[.=\'radical\']" mode="rtl"><x:attribute name="notation">top right</x:attribute></x:template><x:template match="m:mlongdiv|m:mstack" mode="rtl"><mrow dir="ltr"><x:apply-templates select="."/></mrow></x:template><x:template match="m:mstack" 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select="*[1]"/></mrow><mo>)</mo><x:copy-of select="*[3]"/></msrow></x:otherwise></x:choose><x:copy-of select="*[position()&gt;3]"/></mstack></x:variable><x:choose><x:when test="@longdivstyle=\'stackedrightright\'"><menclose notation="right"><x:apply-templates select="c:node-set($ms)"/></menclose><mtable align="top"><mtr><menclose notation="bottom"><x:copy-of select="*[1]"/></menclose></mtr><mtr><mtd><x:copy-of select="*[2]"/></mtd></mtr></mtable></x:when><x:when test="@longdivstyle=\'mediumstackedrightright\'"><x:apply-templates select="c:node-set($ms)"/><menclose notation="left"><mtable align="top"><mtr><menclose notation="bottom"><x:copy-of select="*[1]"/></menclose></mtr><mtr><mtd><x:copy-of select="*[2]"/></mtd></mtr></mtable></menclose></x:when><x:when test="@longdivstyle=\'shortstackedrightright\'"><x:apply-templates select="c:node-set($ms)"/><mtable align="top"><mtr><menclose notation="left bottom"><x:copy-of select="*[1]"/></menclose></mtr><mtr><mtd><x:copy-of select="*[2]"/></mtd></mtr></mtable></x:when><x:when test="@longdivstyle=\'stackedleftleft\'"><mtable align="top"><mtr><menclose notation="bottom"><x:copy-of select="*[1]"/></menclose></mtr><mtr><mtd><x:copy-of select="*[2]"/></mtd></mtr></mtable><menclose notation="left"><x:apply-templates select="c:node-set($ms)"/></menclose></x:when><x:otherwise><x:apply-templates select="c:node-set($ms)"/></x:otherwise></x:choose></x:template><x:template match="m:menclose[@notation=\'madruwb\']" mode="rtl"><menclose notation="bottom right"><x:apply-templates mode="rtl"/></menclose></x:template></x:stylesheet>';
+  var BROWSER = MathJax.Hub.Browser;
+  var exslt = '';
+  if (BROWSER.isEdge || BROWSER.isMSIE) {
+    exslt = 'urn:schemas-microsoft-com:xslt'
+  } else {
+    exslt = 'http://exslt.org/common';
+  }
+  var mml3Stylesheet =
+    '<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" ' +
+    '		xmlns:m="http://www.w3.org/1998/Math/MathML"' +
+    '		xmlns:c="' + exslt + '"' +
+    '		exclude-result-prefixes="m c">' +
+    '<xsl:output indent="yes" omit-xml-declaration="yes"/>' +
+    '<xsl:output indent="yes" omit-xml-declaration="yes"/><xsl:template match="*">' +
+    ' <xsl:copy>' +
+    '  <xsl:copy-of select="@*"/>' +
+    '  <xsl:apply-templates/>' +
+    ' </xsl:copy>' +
+    '</xsl:template><xsl:template match="m:*[@dir=\'rtl\']"  priority="10">' +
+    ' <xsl:apply-templates mode="rtl" select="."/>' +
+    '</xsl:template><xsl:template match="@*" mode="rtl">' +
+    ' <xsl:copy-of select="."/>' +
+    ' <xsl:attribute name="dir">ltr</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="*" mode="rtl">' +
+    ' <xsl:copy>' +
+    '  <xsl:apply-templates select="@*" mode="rtl"/>' +
+    '  <xsl:for-each select="node()">' +
+    '   <xsl:sort data-type="number" order="descending" select="position()"/>' +
+    '   <xsl:text> </xsl:text>' +
+    '   <xsl:apply-templates mode="rtl" select="."/>' +
+    '  </xsl:for-each>' +
+    ' </xsl:copy>' +
+    '</xsl:template><xsl:template match="@open" mode="rtl">' +
+    ' <xsl:attribute name="close"><xsl:value-of select="."/></xsl:attribute>' +
+    '</xsl:template><xsl:template match="@open[.=\'(\']" mode="rtl">' +
+    ' <xsl:attribute name="close">)</xsl:attribute>' +
+    '</xsl:template><xsl:template match="@open[.=\')\']" mode="rtl">' +
+    ' <xsl:attribute name="close">(</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="@open[.=\'[\']" mode="rtl">' +
+    ' <xsl:attribute name="close">]</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="@open[.=\']\']" mode="rtl">' +
+    ' <xsl:attribute name="close">[</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="@open[.=\'{\']" mode="rtl">' +
+    ' <xsl:attribute name="close">}</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="@open[.=\'}\']" mode="rtl">' +
+    ' <xsl:attribute name="close">{</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="@close" mode="rtl">' +
+    ' <xsl:attribute name="open"><xsl:value-of select="."/></xsl:attribute>' +
+    '</xsl:template><xsl:template match="@close[.=\'(\']" mode="rtl">' +
+    ' <xsl:attribute name="open">)</xsl:attribute>' +
+    '</xsl:template><xsl:template match="@close[.=\')\']" mode="rtl">' +
+    ' <xsl:attribute name="open">(</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="@close[.=\'[\']" mode="rtl">' +
+    ' <xsl:attribute name="open">]</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="@close[.=\']\']" mode="rtl">' +
+    ' <xsl:attribute name="open">[</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="@close[.=\'{\']" mode="rtl">' +
+    ' <xsl:attribute name="open">}</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="@close[.=\'}\']" mode="rtl">' +
+    ' <xsl:attribute name="open">{</xsl:attribute>' +
+    '</xsl:template><xsl:template match="m:mfrac[@bevelled=\'true\']" mode="rtl">' +
+    ' <m:mrow>' +
+    '  <m:msub><m:mi></m:mi><xsl:apply-templates select="*[2]" mode="rtl"/></m:msub>' +
+    '  <m:mo>&#x5c;</m:mo>' +
+    '  <m:msup><m:mi></m:mi><xsl:apply-templates select="*[1]" mode="rtl"/></m:msup>' +
+    ' </m:mrow>' +
+    '</xsl:template><xsl:template match="m:mfrac" mode="rtl">' +
+    ' <xsl:copy>' +
+    '  <xsl:apply-templates mode="rtl" select="@*|*"/>' +
+    ' </xsl:copy>' +
+    '</xsl:template><xsl:template match="m:mroot" mode="rtl">' +
+    ' <m:msup>' +
+    '  <m:menclose notation="top right">' +
+    '   <xsl:apply-templates mode="rtl" select="@*|*[1]"/>' +
+    '  </m:menclose>' +
+    '  <xsl:apply-templates mode="rtl" select="*[2]"/>' +
+    ' </m:msup>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:msqrt" mode="rtl">' +
+    ' <m:menclose notation="top right">' +
+    '  <xsl:apply-templates mode="rtl" select="@*|*[1]"/>' +
+    ' </m:menclose>' +
+    '</xsl:template><xsl:template match="m:mtable|m:munder|m:mover|m:munderover" mode="rtl" priority="2">' +
+    ' <xsl:copy>' +
+    '  <xsl:apply-templates select="@*" mode="rtl"/>' +
+    '  <xsl:apply-templates mode="rtl">' +
+    '  </xsl:apply-templates>' +
+    ' </xsl:copy>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:msup" mode="rtl" priority="2">' +
+    ' <m:mmultiscripts>' +
+    '  <xsl:apply-templates select="*[1]" mode="rtl"/>' +
+    '  <m:mprescripts/>' +
+    '  <m:none/>' +
+    '  <xsl:apply-templates select="*[2]" mode="rtl"/>' +
+    ' </m:mmultiscripts>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:msub" mode="rtl" priority="2">' +
+    ' <m:mmultiscripts>' +
+    '  <xsl:apply-templates select="*[1]" mode="rtl"/>' +
+    '  <m:mprescripts/>' +
+    '  <xsl:apply-templates select="*[2]" mode="rtl"/>' +
+    '  <m:none/>' +
+    ' </m:mmultiscripts>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:msubsup" mode="rtl" priority="2">' +
+    ' <m:mmultiscripts>' +
+    '  <xsl:apply-templates select="*[1]" mode="rtl"/>' +
+    '  <m:mprescripts/>' +
+    '  <xsl:apply-templates select="*[2]" mode="rtl"/>' +
+    '  <xsl:apply-templates select="*[3]" mode="rtl"/>' +
+    ' </m:mmultiscripts>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:mmultiscripts" mode="rtl" priority="2">' +
+    ' <m:mmultiscripts>' +
+    '  <xsl:apply-templates select="*[1]" mode="rtl"/>' +
+    '  <xsl:for-each  select="m:mprescripts/following-sibling::*[position() mod 2 = 1]">' +
+    '   <xsl:sort data-type="number" order="descending" select="position()"/>' +
+    '   <xsl:apply-templates select="."  mode="rtl"/>' +
+    '   <xsl:apply-templates select="following-sibling::*[1]"  mode="rtl"/>' +
+    '  </xsl:for-each>' +
+    '  <m:mprescripts/>' +
+    '  <xsl:for-each  select="m:mprescripts/preceding-sibling::*[position()!=last()][position() mod 2 = 0]">' +
+    '   <xsl:sort data-type="number" order="descending" select="position()"/>' +
+    '   <xsl:apply-templates select="."  mode="rtl"/>' +
+    '   <xsl:apply-templates select="following-sibling::*[1]"  mode="rtl"/>' +
+    '  </xsl:for-each>' +
+    ' </m:mmultiscripts>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:mmultiscripts[not(m:mprescripts)]" mode="rtl" priority="3">' +
+    ' <m:mmultiscripts>' +
+    '  <xsl:apply-templates select="*[1]" mode="rtl"/>' +
+    '  <m:mprescripts/>' +
+    '  <xsl:for-each  select="*[position() mod 2 = 0]">' +
+    '   <xsl:sort data-type="number" order="descending" select="position()"/>' +
+    '   <xsl:apply-templates select="."  mode="rtl"/>' +
+    '   <xsl:apply-templates select="following-sibling::*[1]"  mode="rtl"/>' +
+    '  </xsl:for-each>' +
+    ' </m:mmultiscripts>' +
+    '</xsl:template>' +
+    '<xsl:template match="text()[.=\'(\']" mode="rtl">)</xsl:template>' +
+    '<xsl:template match="text()[.=\')\']" mode="rtl">(</xsl:template>' +
+    '<xsl:template match="text()[.=\'{\']" mode="rtl">}</xsl:template>' +
+    '<xsl:template match="text()[.=\'}\']" mode="rtl">{</xsl:template>' +
+    '<xsl:template match="text()[.=\'&lt;\']" mode="rtl">&gt;</xsl:template>' +
+    '<xsl:template match="text()[.=\'&gt;\']" mode="rtl">&lt;</xsl:template>' +
+    '<xsl:template match="text()[.=\'&#x2208;\']" mode="rtl">&#x220b;</xsl:template>' +
+    '<xsl:template match="text()[.=\'&#x220b;\']" mode="rtl">&#x2208;</xsl:template>' +
+    '<xsl:template match="@notation[.=\'radical\']" mode="rtl">' +
+    ' <xsl:attribute name="notation">top right</xsl:attribute>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:mlongdiv|m:mstack" mode="rtl">' +
+    ' <m:mrow dir="ltr">' +
+    ' <xsl:apply-templates select="."/>' +
+    ' </m:mrow>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:mstack" priority="11">' +
+    ' <xsl:variable name="m">' +
+    '  <m:mtable columnspacing="0em">' +
+    '   <xsl:copy-of select="@align"/>' +
+    '  <xsl:variable name="t">' +
+    '   <xsl:apply-templates select="*" mode="mstack1">' +
+    '    <xsl:with-param name="p" select="0"/>' +
+    '   </xsl:apply-templates>' +
+    '  </xsl:variable>' +
+    '  <xsl:variable name="maxl">' +
+    '   <xsl:for-each select="c:node-set($t)/*/@l">' +
+    '    <xsl:sort data-type="number" order="descending"/>' +
+    '    <xsl:if test="position()=1">' +
+    '     <xsl:value-of select="."/>' +
+    '    </xsl:if>' +
+    '   </xsl:for-each>' +
+    '  </xsl:variable>' +
+    '  <xsl:for-each select="c:node-set($t)/*[not(@class=\'mscarries\') or following-sibling::*[1]/@class=\'mscarries\']">' +
+    '<xsl:variable name="c" select="preceding-sibling::*[1][@class=\'mscarries\']"/>' +
+    '   <xsl:text>&#10;</xsl:text>' +
+    '   <m:mtr>' +
+    '    <xsl:copy-of select="@class[.=\'msline\']"/>' +
+    '    <xsl:variable name="offset" select="$maxl - @l"/>' +
+    '    <xsl:choose>' +
+    '     <xsl:when test="@class=\'msline\' and @l=\'*\'">' +
+    '      <xsl:variable name="msl" select="*[1]"/>' +
+    '      <xsl:for-each select="(//node())[position()&lt;=$maxl]">' +
+    '       <xsl:copy-of select="$msl"/>' +
+    '      </xsl:for-each>' +
+    '     </xsl:when>' +
+    '     <xsl:when test="$c">' +
+    '      <xsl:variable name="ldiff" select="$c/@l - @l"/>' +
+    '      <xsl:variable name="loffset" select="$maxl - $c/@l"/>' +
+    '      <xsl:for-each select="(//*)[position()&lt;= $offset]">' +
+    '       <xsl:variable name="pn" select="position()"/>' +
+    '       <xsl:variable name="cy" select="$c/*[position()=$pn - $loffset]"/>' +
+    '	 <m:mtd>' +
+    '	  <xsl:if test="$cy/*">' +
+    '	  <m:mover><m:mphantom><m:mn>0</m:mn></m:mphantom><m:mpadded width="0em" lspace="-0.5width">' +
+    '	  <xsl:copy-of select="$cy/*"/></m:mpadded></m:mover>' +
+    '	  </xsl:if>' +
+    '	 </m:mtd>' +
+    '      </xsl:for-each>' +
+    '      <xsl:for-each select="*">' +
+    '       <xsl:variable name="pn" select="position()"/>' +
+    '       <xsl:variable name="cy" select="$c/*[position()=$pn + $ldiff]"/>' +
+    '       <xsl:copy>' +
+    '	<xsl:copy-of select="@*"/>' +
+    '	<xsl:variable name="b">' +
+    '	 <xsl:choose>' +
+    '	  <xsl:when test="not(string($cy/@crossout) or $cy/@crossout=\'none\')"><xsl:copy-of select="*"/></xsl:when>' +
+    '	  <xsl:otherwise>' +
+    '	   <m:menclose notation="{$cy/@crossout}"><xsl:copy-of select="*"/></m:menclose>' +
+    '	  </xsl:otherwise>' +
+    '	 </xsl:choose>' +
+    '	</xsl:variable>' +
+    '	<xsl:choose>' +
+    '	 <xsl:when test="$cy/m:none or not($cy/*)"><xsl:copy-of select="$b"/></xsl:when>' +
+    '	 <xsl:when test="not(string($cy/@location)) or $cy/@location=\'n\'">' +
+    '	  <m:mover>' +
+    '	   <xsl:copy-of select="$b"/><m:mpadded width="0em" lspace="-0.5width">' +
+    '	   <xsl:copy-of select="$cy/*"/>' +
+    '	  </m:mpadded>' +
+    '	  </m:mover>' +
+    '	 </xsl:when>' +
+    '	 <xsl:when test="$cy/@location=\'nw\'">' +
+    '	  <m:mmultiscripts><xsl:copy-of select="$b"/><m:mprescripts/><m:none/><m:mpadded lspace="-1width" width="0em"><xsl:copy-of select="$cy/*"/></m:mpadded></m:mmultiscripts>' +
+    '	 </xsl:when>' +
+    '	 <xsl:when test="$cy/@location=\'s\'">' +
+    '	  <m:munder><xsl:copy-of select="$b"/><m:mpadded width="0em" lspace="-0.5width"><xsl:copy-of select="$cy/*"/></m:mpadded></m:munder>' +
+    '	 </xsl:when>' +
+    '	 <xsl:when test="$cy/@location=\'sw\'">' +
+    '	  <m:mmultiscripts><xsl:copy-of select="$b"/><m:mprescripts/><m:mpadded lspace="-1width" width="0em"><xsl:copy-of select="$cy/*"/></m:mpadded><m:none/></m:mmultiscripts>' +
+    '	 </xsl:when>' +
+    '	 <xsl:when test="$cy/@location=\'ne\'">' +
+    '	  <m:msup><xsl:copy-of select="$b"/><m:mpadded width="0em"><xsl:copy-of select="$cy/*"/></m:mpadded></m:msup>' +
+    '	 </xsl:when>' +
+    '	 <xsl:when test="$cy/@location=\'se\'">' +
+    '	  <m:msub><xsl:copy-of select="$b"/><m:mpadded width="0em"><xsl:copy-of select="$cy/*"/></m:mpadded></m:msub>' +
+    '	 </xsl:when>' +
+    '	 <xsl:when test="$cy/@location=\'w\'">' +
+    '	  <m:msup><m:mrow/><m:mpadded lspace="-1width" width="0em"><xsl:copy-of select="$cy/*"/></m:mpadded></m:msup>' +
+    '	  <xsl:copy-of select="$b"/>' +
+    '	 </xsl:when>' +
+    '	 <xsl:when test="$cy/@location=\'e\'">' +
+    '	  <xsl:copy-of select="$b"/>' +
+    '	  <m:msup><m:mrow/><m:mpadded width="0em"><xsl:copy-of select="$cy/*"/></m:mpadded></m:msup>' +
+    '	 </xsl:when>' +
+    '	 <xsl:otherwise>' +
+    '	  <xsl:copy-of select="$b"/>' +
+    '	 </xsl:otherwise>' +
+    '	</xsl:choose>' +
+    '       </xsl:copy>' +
+    '      </xsl:for-each>' +
+    '     </xsl:when>' +
+    '     <xsl:otherwise>' +
+    '      <xsl:for-each select="(//*)[position()&lt;= $offset]"><m:mtd/></xsl:for-each>' +
+    '      <xsl:copy-of select="*"/>' +
+    '     </xsl:otherwise>' +
+    '    </xsl:choose>' +
+    '   </m:mtr>' +
+    '  </xsl:for-each>' +
+    ' </m:mtable>' +
+    '</xsl:variable>' +
+    '<xsl:apply-templates mode="ml" select="c:node-set($m)"/>' +
+    '</xsl:template>' +
+    '<xsl:template match="*" mode="ml">' +
+    ' <xsl:copy>' +
+    '  <xsl:copy-of select="@*"/>' +
+    '  <xsl:apply-templates mode="ml"/>' +
+    ' </xsl:copy>' +
+    '</xsl:template>' +
+    '<xsl:template mode="ml" match="m:mtr[following-sibling::*[1][@class=\'msline\']]">' +
+    ' <m:mtr>' +
+    '  <xsl:copy-of select="@*"/>' +
+    '  <xsl:variable name="m" select="following-sibling::*[1]/m:mtd"/>' +
+    '  <xsl:for-each select="m:mtd">' +
+    '   <xsl:variable name="p" select="position()"/>' +
+    '   <m:mtd>' +
+    '    <xsl:copy-of select="@*"/>' +
+    '    <xsl:choose>' +
+    '     <xsl:when test="$m[$p]/m:mpadded">' +
+    '      <m:menclose notation="bottom">' +
+    '       <m:mpadded depth=".1em" height="1em" width=".4em">' +
+    '	<xsl:copy-of select="*"/>' +
+    '       </m:mpadded>' +
+    '      </m:menclose>' +
+    '     </xsl:when>' +
+    '     <xsl:otherwise>' +
+    '      <xsl:copy-of select="*"/>' +
+    '     </xsl:otherwise>' +
+    '    </xsl:choose>' +
+    '   </m:mtd>' +
+    '  </xsl:for-each>' +
+    ' </m:mtr>' +
+    '</xsl:template><xsl:template mode="ml" match="m:mtr[not(preceding-sibling::*)][@class=\'msline\']" priority="3">' +
+    ' <m:mtr>' +
+    '  <xsl:copy-of select="@*"/>' +
+    '  <xsl:for-each select="m:mtd">' +
+    '   <m:mtd>' +
+    '    <xsl:copy-of select="@*"/>' +
+    '    <xsl:if test="m:mpadded">' +
+    '     <m:menclose notation="bottom">' +
+    '      <m:mpadded depth=".1em" height="1em" width=".4em">' +
+    '       <m:mspace width=".2em"/>' +
+    '      </m:mpadded>' +
+    '     </m:menclose>' +
+    '    </xsl:if>' +
+    '   </m:mtd>' +
+    '  </xsl:for-each>' +
+    ' </m:mtr>' +
+    '</xsl:template><xsl:template mode="ml" match="m:mtr[@class=\'msline\']" priority="2"/>' +
+    '<xsl:template mode="mstack1" match="*">' +
+    ' <xsl:param name="p"/>' +
+    ' <xsl:param name="maxl" select="0"/>' +
+    ' <m:mtr l="{1 + $p}">' +
+    '  <xsl:if test="ancestor::mstack[1]/@stackalign=\'left\'">' +
+    '   <xsl:attribute name="l"><xsl:value-of  select="$p"/></xsl:attribute>' +
+    '  </xsl:if>' +
+    '  <m:mtd><xsl:apply-templates select="."/></m:mtd>' +
+    ' </m:mtr>' +
+    '</xsl:template>' +
+    '<xsl:template mode="mstack1" match="m:msrow">' +
+    ' <xsl:param name="p"/>' +
+    ' <xsl:param name="maxl" select="0"/>' +
+    ' <xsl:variable  name="align1" select="ancestor::m:mstack[1]/@stackalign"/>' +
+    ' <xsl:variable name="align">' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="string($align1)=\'\'">decimalpoint</xsl:when>' +
+    '   <xsl:otherwise><xsl:value-of select="$align1"/></xsl:otherwise>' +
+    '  </xsl:choose>' +
+    ' </xsl:variable>' +
+    ' <xsl:variable name="row">' +
+    '  <xsl:apply-templates mode="mstack1" select="*">' +
+    '   <xsl:with-param name="p" select="0"/>' +
+    '  </xsl:apply-templates>' +
+    ' </xsl:variable>' +
+    ' <xsl:text>&#10;</xsl:text>' +
+    ' <xsl:variable name="l1">' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="$align=\'decimalpoint\' and m:mn">' +
+    '    <xsl:for-each select="c:node-set($row)/m:mtr[m:mtd/m:mn][1]">' +
+    '     <xsl:value-of select="number(sum(@l))+count(preceding-sibling::*/@l)"/>' +
+    '    </xsl:for-each>' +
+    '   </xsl:when>' +
+    '   <xsl:when test="$align=\'right\' or $align=\'decimalpoint\'">' +
+    '    <xsl:value-of select="count(c:node-set($row)/m:mtr/m:mtd)"/>' +
+    '   </xsl:when>' +
+    '   <xsl:otherwise>' +
+    '    <xsl:value-of select="0"/>' +
+    '   </xsl:otherwise>' +
+    '  </xsl:choose>' +
+    ' </xsl:variable>' +
+    ' <m:mtr class="msrow" l="{number($l1) + number(sum(@position)) +$p}">' +
+    '  <xsl:copy-of select="c:node-set($row)/m:mtr/*"/>' +
+    ' </m:mtr>' +
+    '</xsl:template><xsl:template mode="mstack1" match="m:mn">' +
+    ' <xsl:param name="p"/>' +
+    ' <xsl:variable name="align1" select="ancestor::m:mstack[1]/@stackalign"/>' +
+    ' <xsl:variable name="dp1" select="ancestor::*[@decimalpoint][1]/@decimalpoint"/>' +
+    ' <xsl:variable name="align">' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="string($align1)=\'\'">decimalpoint</xsl:when>' +
+    '   <xsl:otherwise><xsl:value-of select="$align1"/></xsl:otherwise>' +
+    '  </xsl:choose>' +
+    ' </xsl:variable>' +
+    ' <xsl:variable name="dp">' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="string($dp1)=\'\'">.</xsl:when>' +
+    '   <xsl:otherwise><xsl:value-of select="$dp1"/></xsl:otherwise>' +
+    '  </xsl:choose>' +
+    ' </xsl:variable>' +
+    ' <m:mtr l="$p">' +
+    '  <xsl:variable name="mn" select="normalize-space(.)"/>' +
+    '  <xsl:variable name="len" select="string-length($mn)"/>' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="$align=\'right\' or ($align=\'decimalpoint\' and not(contains($mn,$dp)))">' +
+    '    <xsl:attribute name="l"><xsl:value-of select="$p + $len"/></xsl:attribute>' +
+    '   </xsl:when>' +
+    '   <xsl:when test="$align=\'center\'">' +
+    '    <xsl:attribute name="l"><xsl:value-of select="round(($p + $len) div 2)"/></xsl:attribute>' +
+    '   </xsl:when>' +
+    '   <xsl:when test="$align=\'decimalpoint\'">' +
+    '    <xsl:attribute name="l"><xsl:value-of select="$p + string-length(substring-before($mn,$dp))"/></xsl:attribute>' +
+    '   </xsl:when>' +
+    '  </xsl:choose>  <xsl:for-each select="(//node())[position() &lt;=$len]">' +
+    '   <xsl:variable name="pos" select="position()"/>' +
+    '   <m:mtd><m:mn><xsl:value-of select="substring($mn,$pos,1)"/></m:mn></m:mtd>' +
+    '  </xsl:for-each>' +
+    ' </m:mtr>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:msgroup" mode="mstack1">' +
+    ' <xsl:param name="p"/>' +
+    ' <xsl:variable name="s" select="number(sum(@shift))"/>' +
+    ' <xsl:variable name="thisp" select="number(sum(@position))"/>' +
+    ' <xsl:for-each select="*">' +
+    '  <xsl:apply-templates mode="mstack1" select=".">' +
+    '   <xsl:with-param name="p" select="number($p)+$thisp+(position()-1)*$s"/>' +
+    '  </xsl:apply-templates>' +
+    ' </xsl:for-each>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:msline" mode="mstack1">' +
+    ' <xsl:param name="p"/>' +
+    ' <xsl:variable  name="align1" select="ancestor::m:mstack[1]/@stackalign"/>' +
+    ' <xsl:variable name="align">' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="string($align1)=\'\'">decimalpoint</xsl:when>' +
+    '   <xsl:otherwise><xsl:value-of select="$align1"/></xsl:otherwise>' +
+    '  </xsl:choose>' +
+    ' </xsl:variable>' +
+    ' <m:mtr class="msline">' +
+    '  <xsl:attribute name="l">' +
+    '   <xsl:choose>' +
+    '    <xsl:when test="not(string(@length)) or @length=0">*</xsl:when>' +
+    '    <xsl:when test="string($align)=\'right\' or string($align)=\'decimalpoint\' "><xsl:value-of select="$p+ @length"/></xsl:when>' +
+    '    <xsl:otherwise><xsl:value-of select="$p"/></xsl:otherwise>' +
+    '   </xsl:choose>' +
+    '  </xsl:attribute>' +
+    '  <xsl:variable name="w">' +
+    '   <xsl:choose>' +
+    '    <xsl:when test="@mslinethickness=\'thin\'">0.1em</xsl:when>' +
+    '    <xsl:when test="@mslinethickness=\'medium\'">0.15em</xsl:when>' +
+    '    <xsl:when test="@mslinethickness=\'thick\'">0.2em</xsl:when>' +
+    '    <xsl:when test="@mslinethickness"><xsl:value-of select="@mslinethickness"/></xsl:when>' +
+    '    <xsl:otherwise>0.15em</xsl:otherwise>' +
+    '   </xsl:choose>' +
+    '  </xsl:variable>' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="not(string(@length)) or @length=0">' +
+    '    <m:mtd class="mslinemax">' +
+    '     <m:mpadded lspace="-0.2em" width="0em" height="0em">' +
+    '      <m:mfrac linethickness="{$w}">' +
+    '       <m:mspace width=".4em"/>' +
+    '       <m:mrow/>' +
+    '      </m:mfrac>' +
+    '     </m:mpadded>' +
+    '    </m:mtd>' +
+    '   </xsl:when>' +
+    '   <xsl:otherwise>' +
+    '    <xsl:variable name="l" select="@length"/>' +
+    '    <xsl:for-each select="(//node())[position()&lt;=$l]">' +
+    '     <m:mtd class="msline">' +
+    '      <m:mpadded lspace="-0.2em" width="0em" height="0em">' +
+    '       <m:mfrac linethickness="{$w}">' +
+    '	<m:mspace width=".4em"/>' +
+    '	<m:mrow/>' +
+    '       </m:mfrac>' +
+    '      </m:mpadded>' +
+    '     </m:mtd>' +
+    '    </xsl:for-each>' +
+    '   </xsl:otherwise>' +
+    '  </xsl:choose>' +
+    ' </m:mtr>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:mscarries" mode="mstack1">' +
+    ' <xsl:param name="p"/>' +
+    ' <xsl:variable  name="align1" select="ancestor::m:mstack[1]/@stackalign"/>' +
+    ' <xsl:variable name="l1">' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="string($align1)=\'left\'">0</xsl:when>' +
+    '   <xsl:otherwise><xsl:value-of select="count(*)"/></xsl:otherwise>' +
+    '  </xsl:choose>' +
+    ' </xsl:variable>' +
+    ' <m:mtr class="mscarries" l="{$p + $l1 + sum(@position)}">' +
+    '  <xsl:apply-templates select="*" mode="msc"/>' +
+    ' </m:mtr>' +
+    '</xsl:template><xsl:template match="*" mode="msc">' +
+    ' <m:mtd>' +
+    '  <xsl:copy-of select="../@location|../@crossout"/>' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="../@scriptsizemultiplier">' +
+    '    <m:mstyle mathsize="{round(../@scriptsizemultiplier div .007)}%">' +
+    '     <xsl:apply-templates select="."/>' +
+    '    </m:mstyle>' +
+    '   </xsl:when>' +
+    '   <xsl:otherwise>' +
+    '    <xsl:apply-templates select="."/>' +
+    '   </xsl:otherwise>' +
+    '  </xsl:choose>' +
+    ' </m:mtd>' +
+    '</xsl:template><xsl:template match="m:mscarry" mode="msc">' +
+    ' <m:mtd>' +
+    ' <xsl:copy-of select="@location|@crossout"/>' +
+    '  <xsl:choose>' +
+    '   <xsl:when test="../@scriptsizemultiplier">' +
+    '    <m:mstyle mathsize="{round(../@scriptsizemultiplier div .007)}%">' +
+    '     <xsl:apply-templates/>' +
+    '    </m:mstyle>' +
+    '   </xsl:when>' +
+    '   <xsl:otherwise>' +
+    '    <xsl:apply-templates/>' +
+    '   </xsl:otherwise>' +
+    '  </xsl:choose>' +
+    ' </m:mtd>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:mlongdiv" priority="11">' +
+    ' <xsl:variable name="ms">' +
+    '  <m:mstack>' +
+    '   <xsl:copy-of select="(ancestor-or-self::*/@decimalpoint)[last()]"/>' +
+    '   <xsl:choose>' +
+    '    <xsl:when test="@longdivstyle=\'left)(right\'">' +
+    '     <m:msrow>' +
+    '      <m:mrow><xsl:copy-of select="*[1]"/></m:mrow>' +
+    '      <m:mo>)</m:mo>' +
+    '      <xsl:copy-of select="*[3]"/>' +
+    '      <m:mo>(</m:mo>' +
+    '      <xsl:copy-of select="*[2]"/>' +
+    '     </m:msrow>' +
+    '    </xsl:when>' +
+    '    <xsl:when test="@longdivstyle=\'left/\right\'">' +
+    '     <m:msrow>' +
+    '      <m:mrow><xsl:copy-of select="*[1]"/></m:mrow>' +
+    '      <m:mo>/</m:mo>' +
+    '      <xsl:copy-of select="*[3]"/>' +
+    '      <m:mo>\</m:mo>' +
+    '      <xsl:copy-of select="*[2]"/>' +
+    '     </m:msrow>' +
+    '    </xsl:when>' +
+    '    <xsl:when test="@longdivstyle=\':right=right\'">' +
+    '     <m:msrow>' +
+    '      <xsl:copy-of select="*[3]"/>' +
+    '      <m:mo>:</m:mo>' +
+    '      <xsl:copy-of select="*[1]"/>' +
+    '      <m:mo>=</m:mo>' +
+    '      <xsl:copy-of select="*[2]"/>' +
+    '     </m:msrow>' +
+    '    </xsl:when>' +
+    '    <xsl:when test="@longdivstyle=\'stackedrightright\'' +
+    '		    or @longdivstyle=\'mediumstackedrightright\'' +
+    '		    or @longdivstyle=\'shortstackedrightright\'' +
+    '		    or @longdivstyle=\'stackedleftleft\'' +
+    '		    ">' +
+    '     <xsl:attribute name="align">top</xsl:attribute>' +
+    '     <xsl:copy-of select="*[3]"/>' +
+    '    </xsl:when>' +
+    '    <xsl:when test="@longdivstyle=\'stackedleftlinetop\'">' +
+    '     <xsl:copy-of select="*[2]"/>' +
+    '     <m:msline length="{string-length(*[3])-1}"/>' +
+    '     <m:msrow>' +
+    '      <m:mrow>' +
+    '     <m:menclose notation="bottom right">' +
+    '      <xsl:copy-of select="*[1]"/>' +
+    '     </m:menclose>' +
+    '      </m:mrow>' +
+    '      <xsl:copy-of select="*[3]"/>' +
+    '     </m:msrow>' +
+    '    </xsl:when>' +
+    '    <xsl:when test="@longdivstyle=\'righttop\'">' +
+    '     <xsl:copy-of select="*[2]"/>' +
+    '     <m:msline length="{string-length(*[3])}"/>' +
+    '     <m:msrow>' +
+    '      <xsl:copy-of select="*[3]"/>' +
+    '      <m:menclose notation="top left bottom">' +
+    '       <xsl:copy-of select="*[1]"/></m:menclose>' +
+    '     </m:msrow>' +
+    '    </xsl:when>' +
+    '    <xsl:otherwise>' +
+    '     <xsl:copy-of select="*[2]"/>' +
+    '     <m:msline length="{string-length(*[3])}"/>' +
+    '     <m:msrow>' +
+    '      <m:mrow><xsl:copy-of select="*[1]"/></m:mrow>' +
+    '      <m:mo>)</m:mo>' +
+    '      <xsl:copy-of select="*[3]"/>' +
+    '     </m:msrow>' +
+    '    </xsl:otherwise>' +
+    '   </xsl:choose>' +
+    '   <xsl:copy-of select="*[position()&gt;3]"/>' +
+    '  </m:mstack>' +
+    ' </xsl:variable>' +
+    ' <xsl:choose>' +
+    '  <xsl:when test="@longdivstyle=\'stackedrightright\'">' +
+    '   <m:menclose notation="right">' +
+    '    <xsl:apply-templates select="c:node-set($ms)"/>' +
+    '   </m:menclose>' +
+    '   <m:mtable align="top">' +
+    '    <m:mtr>' +
+    '     <m:menclose notation="bottom">' +
+    '      <xsl:copy-of select="*[1]"/>' +
+    '     </m:menclose>' +
+    '    </m:mtr>' +
+    '    <m:mtr>' +
+    '     <mtd><xsl:copy-of select="*[2]"/></mtd>' +
+    '    </m:mtr>' +
+    '   </m:mtable>' +
+    '  </xsl:when>' +
+    '    <xsl:when test="@longdivstyle=\'mediumstackedrightright\'">' +
+    '    <xsl:apply-templates select="c:node-set($ms)"/>' +
+    '   <m:menclose notation="left">' +
+    '   <m:mtable align="top">' +
+    '    <m:mtr>' +
+    '     <m:menclose notation="bottom">' +
+    '      <xsl:copy-of select="*[1]"/>' +
+    '     </m:menclose>' +
+    '    </m:mtr>' +
+    '    <m:mtr>' +
+    '     <mtd><xsl:copy-of select="*[2]"/></mtd>' +
+    '    </m:mtr>' +
+    '   </m:mtable>' +
+    '   </m:menclose>' +
+    '  </xsl:when>' +
+    '  <xsl:when test="@longdivstyle=\'shortstackedrightright\'">' +
+    '    <xsl:apply-templates select="c:node-set($ms)"/>' +
+    '   <m:mtable align="top">' +
+    '    <m:mtr>' +
+    '     <m:menclose notation="left bottom">' +
+    '      <xsl:copy-of select="*[1]"/>' +
+    '     </m:menclose>' +
+    '    </m:mtr>' +
+    '    <m:mtr>' +
+    '     <mtd><xsl:copy-of select="*[2]"/></mtd>' +
+    '    </m:mtr>' +
+    '   </m:mtable>' +
+    '  </xsl:when>' +
+    '  <xsl:when test="@longdivstyle=\'stackedleftleft\'">' +
+    '   <m:mtable align="top">' +
+    '    <m:mtr>' +
+    '     <m:menclose notation="bottom">' +
+    '      <xsl:copy-of select="*[1]"/>' +
+    '     </m:menclose>' +
+    '    </m:mtr>' +
+    '    <m:mtr>' +
+    '     <mtd><xsl:copy-of select="*[2]"/></mtd>' +
+    '    </m:mtr>' +
+    '   </m:mtable>' +
+    '   <m:menclose notation="left">' +
+    '    <xsl:apply-templates select="c:node-set($ms)"/>' +
+    '   </m:menclose>' +
+    '  </xsl:when>' +
+    '  <xsl:otherwise>' +
+    '   <xsl:apply-templates select="c:node-set($ms)"/>' +
+    '  </xsl:otherwise>' +
+    ' </xsl:choose>' +
+    '</xsl:template>' +
+    '<xsl:template match="m:menclose[@notation=\'madruwb\']" mode="rtl">' +
+    ' <m:menclose notation="bottom right">' +
+    '  <xsl:apply-templates mode="rtl"/>' +
+    ' </m:menclose>' +
+    '</xsl:template></xsl:stylesheet>';
+
   /*
    *  End of mml3mj.xsl material.
    */
-  
+
   var mml3;
   if (window.XSLTProcessor) {
     // standard method: just use an XSLTProcessor and parse the stylesheet
@@ -121,6 +765,18 @@ MathJax.Hub.Register.StartupHook("MathML Jax Ready",function () {
     // No XSLT support. Do not change the <math> content.
     MATHML.mml3XSLT = null;
   }
+  
+  // Tweak CSS to avoid some browsers rearranging HTML output
+  MathJax.Ajax.Styles({
+    ".MathJax .mi, .MathJax .mo, .MathJax .mn, .MathJax .mtext": {
+      direction: "ltr",
+      display: "inline-block"
+    },
+    ".MathJax .ms, .MathJax .mspace, .MathJax .mglyph": {
+      direction: "ltr",
+      display: "inline-block"
+    }
+  });
 
   MathJax.Hub.Startup.signal.Post("MathML mml3.js Ready");
 });
diff --git a/unpacked/extensions/MathMenu.js b/unpacked/extensions/MathMenu.js
index 9e47031c6..2bef958ac 100644
--- a/unpacked/extensions/MathMenu.js
+++ b/unpacked/extensions/MathMenu.js
@@ -295,7 +295,7 @@
         onmouseup: MENU.Mouseup, ondblclick: FALSE,
         ondragstart: FALSE, onselectstart: FALSE, oncontextmenu: FALSE,
         menuItem: this, className: "MathJax_Menu", onkeydown: MENU.Keydown,
-        role: "navigation"
+        role: "menu"
       });
       if (event.type === "contextmenu" || event.type === "mouseover")
         menu.className += " MathJax_ContextMenu";
@@ -614,7 +614,8 @@
         {onmouseup: MENU.Mouseup,
          ondragstart: FALSE, onselectstart: FALSE, onselectend: FALSE,
          ontouchstart: MENU.Touchstart, ontouchend: MENU.Touchend,
-         className: "MathJax_MenuItem", menuItem: this},
+         className: "MathJax_MenuItem", role: this.role,
+         menuItem: this},
         def);
     },
 
@@ -695,14 +696,12 @@
    *  Abstract class of menu items that are focusable and perform some action
    */
   MENU.ENTRY = MENU.ITEM.Subclass({
-
     role: "menuitem",  // Aria role.
 
     Attributes: function(def) {
       def = HUB.Insert(
         {onmouseover: MENU.Mouseover, onmouseout: MENU.Mouseout,
-         onmousedown: MENU.Mousedown, role: this.role,
-         onkeydown: MENU.Keydown,
+         onmousedown: MENU.Mousedown, onkeydown: MENU.Keydown,
          "aria-disabled": !!this.disabled},
         def);
       def = this.SUPER(arguments).Attributes.call(this, def);
@@ -814,6 +813,11 @@
     marker: "\u25BA",  // the submenu arrow
     markerRTL: "\u25C4", // the submenu arrow for RTL
 
+    Attributes: function(def) {
+      def = HUB.Insert({"aria-haspopup": "true"}, def);
+      def = this.SUPER(arguments).Attributes.call(this, def);
+      return def;
+    },
     Init: function (name,def) {
       if (!(name instanceof Array)) {name = [name,name]}  // make [id,label] pair
       this.name = name; var i = 1;
@@ -907,6 +911,12 @@
     marker: (isPC ? "\u25CF" : "\u2713"),   // the checkmark
     role: "menuitemradio",
 
+    Attributes: function(def) {
+      var checked = CONFIG.settings[this.variable] === this.value ? "true" : "false";
+      def = HUB.Insert({"aria-checked": checked}, def);
+      def = this.SUPER(arguments).Attributes.call(this, def);
+      return def;
+    },
     Init: function (name,variable,def) {
       if (!(name instanceof Array)) {name = [name,name]}  // make [id,label] pair
       this.name = name; this.variable = variable; this.With(def);
@@ -914,7 +924,9 @@
     },
     Label: function (def,menu) {
       var span = {className:"MathJax_MenuRadioCheck" + this.rtlClass()};
-      if (CONFIG.settings[this.variable] !== this.value) {span = {style:{display:"none"}}}
+      if (CONFIG.settings[this.variable] !== this.value) {
+        span = {style:{display:"none"}};
+      }
       return [["span",span,[this.marker]]," "+this.Name()];
     },
     Mouseup: function (event,menu) {
@@ -922,8 +934,9 @@
         var child = menu.parentNode.childNodes;
         for (var i = 0, m = child.length; i < m; i++) {
           var item = child[i].menuItem;
-          if (item && item.variable === this.variable)
-            {child[i].firstChild.style.display = "none"}
+          if (item && item.variable === this.variable) {
+            child[i].firstChild.style.display = "none";
+          }
         }
         menu.firstChild.display = "";
         CONFIG.settings[this.variable] = this.value;
@@ -945,6 +958,12 @@
     marker: "\u2713",   // the checkmark
     role: "menuitemcheckbox",
 
+    Attributes: function(def) {
+      var checked = CONFIG.settings[this.variable] ? "true" : "false";
+      def = HUB.Insert({"aria-checked": checked}, def);
+      def = this.SUPER(arguments).Attributes.call(this, def);
+      return def;
+    },
     Init: function (name,variable,def) {
       if (!(name instanceof Array)) {name = [name,name]}  // make [id,label] pair
       this.name = name; this.variable = variable; this.With(def);
@@ -994,6 +1013,13 @@
    *  A rule in a menu
    */
   MENU.ITEM.RULE = MENU.ITEM.Subclass({
+    role: "separator",
+    
+    Attributes: function(def) {
+      def = HUB.Insert({"aria-orientation": "vertical"}, def);
+      def = this.SUPER(arguments).Attributes.call(this, def);
+      return def;
+    },
     Label: function (def,menu) {
       def.className += " MathJax_MenuRule";
       return null;
@@ -1035,8 +1061,8 @@
       ["a",{href:"http://www.mathjax.org/"},["www.mathjax.org"]],
       ["span",{className:"MathJax_MenuClose",id:"MathJax_AboutClose",
                onclick:MENU.About.Remove,
-               onkeydown: MENU.About.Keydown, tabIndex: 0,
-               "aria-label": "Close", "aria-describedby": _("CloseWindow","Close window")},
+               onkeydown: MENU.About.Keydown, tabIndex: 0, role: "button",
+               "aria-label": _("CloseWindow","Close window")},
         [["span",{},"\u00D7"]]]
     ]);
     if (event.type === "mouseup") about.className += " MathJax_MousePost";
@@ -1230,6 +1256,7 @@
             if (BROWSER.isChrome && BROWSER.version.substr(0,3) !== "24.") {message = MESSAGE.MML.WebKit}
             else if (BROWSER.isSafari && !BROWSER.versionAtLeast("5.0")) {message = MESSAGE.MML.WebKit}
             else if (BROWSER.isMSIE) {if (!BROWSER.hasMathPlayer) {message = MESSAGE.MML.MSIE}}
+            else if (BROWSER.isEdge) {message = MESSAGE.MML.WebKit}
             else {message = MESSAGE.MML[BROWSER]}
             warned = "warnedMML";
           }
diff --git a/unpacked/extensions/TeX/AMSmath.js b/unpacked/extensions/TeX/AMSmath.js
index 545135362..c6d974b21 100644
--- a/unpacked/extensions/TeX/AMSmath.js
+++ b/unpacked/extensions/TeX/AMSmath.js
@@ -134,14 +134,14 @@ MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
       aligned:       ['AlignedAMSArray',null,null,null,'rlrlrlrlrlrl',COLS([0,2,0,2,0,2,0,2,0,2,0]),".5em",'D'],
       gathered:      ['AlignedAMSArray',null,null,null,'c',null,".5em",'D'],
 
-      subarray:      ['Array',null,null,null,null,COLS([0,0,0,0]),"0.1em",'S',1],
+      subarray:      ['Array',null,null,null,null,COLS([0]),"0.1em",'S',1],
       smallmatrix:   ['Array',null,null,null,'c',COLS([1/3]),".2em",'S',1],
       
       'equation':    ['EquationBegin','Equation',true],
       'equation*':   ['EquationBegin','EquationStar',false],
 
-      eqnarray:      ['AMSarray',null,true,true, 'rcl',MML.LENGTH.THICKMATHSPACE,".5em"],
-      'eqnarray*':   ['AMSarray',null,false,true,'rcl',MML.LENGTH.THICKMATHSPACE,".5em"]
+      eqnarray:      ['AMSarray',null,true,true, 'rcl',COLS([0]),".5em"],
+      'eqnarray*':   ['AMSarray',null,false,true,'rcl',COLS([0]),".5em"]
     },
     
     delimiter: {
diff --git a/unpacked/jax/output/CommonHTML/autoload/mmultiscripts.js b/unpacked/jax/output/CommonHTML/autoload/mmultiscripts.js
index e412a1c91..1a1914e17 100644
--- a/unpacked/jax/output/CommonHTML/autoload/mmultiscripts.js
+++ b/unpacked/jax/output/CommonHTML/autoload/mmultiscripts.js
@@ -45,7 +45,7 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
       //
       var base, bbox;
       if (stretch) {
-        base = node.getElementsByTagName("mjx-base")[0];
+        base = CHTML.getNode(node,"mjx-base");
       } else {
         this.CHTMLaddChild(node,0,{type:"mjx-base", noBBox:true, forceChild:true});
         base = node.firstChild;
@@ -137,10 +137,10 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
     //
     CHTMLgetScripts: function (BOX,BBOX,stretch,node) {
       if (stretch) {
-        BOX.sub = node.getElementsByTagName("mjx-sub")[0];
-        BOX.sup = node.getElementsByTagName("mjx-sup")[0];
-        BOX.presub = node.getElementsByTagName("mjx-presub")[0];
-        BOX.presup = node.getElementsByTagName("mjx-presup")[0];
+        BOX.sub = CHTML.getNode(node,"mjx-sub");
+        BOX.sup = CHTML.getNode(node,"mjx-sup");
+        BOX.presub = CHTML.getNode(node,"mjx-presub");
+        BOX.presup = CHTML.getNode(node,"mjx-presup");
         BBOX.sub = this.CHTMLbbox.sub;
         BBOX.sup = this.CHTMLbbox.sup;
         BBOX.presub = this.CHTMLbbox.presub;
@@ -182,7 +182,7 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
           BBOX = state.BBOX[type] = CHTML.BBOX.empty();
           if (state.w) {
             BOX.style.paddingLeft = CHTML.Em(state.w);
-            BBOX.w = BBOX.r = state.w;
+            BBOX.w = BBOX.r = state.w; BBOX.x = state.w;
           }
         }
         data.toCommonHTML(BOX);
@@ -198,7 +198,7 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
     //  right-justify the scripts, otherwise, left-justify them.
     //
     CHTMLpadScript: function (type,w,bbox,state) {
-      if (!bbox) bbox = {w:0, fake:1};
+      if (!bbox) bbox = {w:0, fake:1, rscale:1};
       var BBOX = state.BBOX[type], dx = 0, dw = 0;
       if (BBOX) {
         if (bbox.rscale*bbox.w < w) {
@@ -252,7 +252,7 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
     CHTMLplaceSubSup: function (sub,sbox,sup,Sbox,x,delta,u,v,s) {
       sub.style.paddingRight = CHTML.Em(s); sbox.w += s;
       sup.style.paddingBottom = CHTML.Em(u+v-Sbox.d-sbox.h);
-      sup.style.paddingLeft = CHTML.Em(delta);
+      sup.style.paddingLeft = CHTML.Em(delta+(Sbox.x||0));
       sup.style.paddingRight = CHTML.Em(s); Sbox.w += s;
       sup.parentNode.style.verticalAlign = CHTML.Em(-v);
       this.CHTML.combine(sbox,x,-v);
@@ -272,7 +272,7 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
     CHTMLplacePresubPresup: function (presub,pbox,presup,Pbox,delta,u,v,s) {
       presub.style.paddingLeft = CHTML.Em(s);
       presup.style.paddingBottom = CHTML.Em(u+v-Pbox.d-pbox.h);
-      presup.style.paddingLeft = CHTML.Em(delta+s);
+      presup.style.paddingLeft = CHTML.Em(delta+s+(Pbox.x||0));
       presup.style.paddingRight = CHTML.Em(-delta);
       presup.parentNode.style.verticalAlign = CHTML.Em(-v);
       this.CHTML.combine(pbox,s,-v);
diff --git a/unpacked/jax/output/CommonHTML/autoload/multiline.js b/unpacked/jax/output/CommonHTML/autoload/multiline.js
index 3b30c07f4..fcccc549a 100644
--- a/unpacked/jax/output/CommonHTML/autoload/multiline.js
+++ b/unpacked/jax/output/CommonHTML/autoload/multiline.js
@@ -505,9 +505,9 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
       //
       if (end.length === 0) {
         var NODE = this.CHTMLnodeElement(),
-            stack = NODE.getElementsByTagName("mjx-stack")[0],
-            sup = NODE.getElementsByTagName("mjx-sup")[0],
-            sub = NODE.getElementsByTagName("mjx-sub")[0];
+            stack = CHTML.getNode(NODE,"mjx-stack"),
+            sup = CHTML.getNode(NODE,"mjx-sup"),
+            sub = CHTML.getNode(NODE,"mjx-sub");
         if (stack)      node.appendChild(stack);
           else if (sup) node.appendChild(sup);
           else if (sub) node.appendChild(sub);
@@ -569,9 +569,9 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
       //
       if (start.length < 1) {
         NODE = this.CHTMLnodeElement();
-        var prestack = NODE.getElementsByTagName("mjx-prestack")[0],
-            presup = NODE.getElementsByTagName("mjx-presup")[0],
-            presub = NODE.getElementsByTagName("mjx-presub")[0];
+        var prestack = CHTML.getNode(NODE,"mjx-prestack"),
+            presup = CHTML.getNode(NODE,"mjx-presup"),
+            presub = CHTML.getNode(NODE,"mjx-presub");
         if (prestack)      node.appendChild(prestack);
           else if (presup) node.appendChild(presup);
           else if (presub) node.appendChild(presub);
@@ -598,9 +598,9 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
       //
       if (end.length === 0) {
         NODE = this.CHTMLnodeElement();
-        var stack = NODE.getElementsByTagName("mjx-stack")[0],
-            sup = NODE.getElementsByTagName("mjx-sup")[0],
-            sub = NODE.getElementsByTagName("mjx-sub")[0];
+        var stack = CHTML.getNode(NODE,"mjx-stack"),
+            sup = CHTML.getNode(NODE,"mjx-sup"),
+            sub = CHTML.getNode(NODE,"mjx-sub");
         if (stack)      node.appendChild(stack);
           else if (sup) node.appendChild(sup);
           else if (sub) node.appendChild(sub);
diff --git a/unpacked/jax/output/CommonHTML/jax.js b/unpacked/jax/output/CommonHTML/jax.js
index f3d070fba..236695eaf 100644
--- a/unpacked/jax/output/CommonHTML/jax.js
+++ b/unpacked/jax/output/CommonHTML/jax.js
@@ -325,8 +325,9 @@
         if (!def) def = {};
         if (def.isMathJax == null) def.isMathJax = true;
         if (def.className) def.className = type+" "+def.className; else def.className = type;
+        type = "span";
       }
-      return this.HTMLElement("span",def,content);
+      return this.HTMLElement(type,def,content);
     },
     addElement: function (node,type,def,content) {
       return node.appendChild(this.Element(type,def,content));
@@ -335,6 +336,22 @@
     ucMatch: HTML.ucMatch,
     setScript: HTML.setScript,
     
+    //
+    //  This replaces node.getElementsByTagName(type)[0]
+    //  and should be replaced by that if we go back to using
+    //  custom tags
+    //
+    getNode: (document.getElementsByClassName ? 
+      function (node,type) {return node.getElementsByClassName(type)[0]} :
+      function (node,type) {
+        var nodes = node.getElementsByTagName("span");
+        var name = RegExp("\\b"+type+"\\b");
+        for (var i = 0, m = nodes.length; i < m; i++) {
+          if (name.test(nodes[i].className)) return nodes[i];
+        }
+      }
+    ),
+    
 
     /********************************************/
     
@@ -361,7 +378,7 @@
         //  Remove any existing output
         //
         prev = script.previousSibling;
-	if (prev && prev.nodeName.toLowerCase() === "mjx-chtml")
+	if (prev && prev.className && String(prev.className).substr(0,9) === "mjx-chtml")
 	  prev.parentNode.removeChild(prev);
         //
         //  Add the node for the math and mark it as being processed
@@ -1328,7 +1345,7 @@
         if (child) {
           var type = options.childNodes;
           if (type) {
-            if (type instanceof Array) type = type[i];
+            if (type instanceof Array) type = type[i]||"span";
             node = CHTML.addElement(node,type);
           }
           cnode = child.toCommonHTML(node,options.childOptions);
@@ -1667,6 +1684,9 @@
     MML.math.Augment({
       toCommonHTML: function (node) {
         node = this.CHTMLdefaultNode(node);
+        var alttext = this.Get("alttext");
+        if (alttext && !node.getAttribute("aria-label")) node.setAttribute("aria-label",alttext);
+        if (!node.getAttribute("role")) node.setAttribute("role","math");
         if (this.CHTML.pwidth) {
           node.parentNode.style.width = this.CHTML.pwidth;
           node.parentNode.style.minWidth = this.CHTML.mwidth;
@@ -2032,9 +2052,9 @@
         //
         var base, under, over, nodes = [];
         if (stretch) {
-          base = node.getElementsByTagName("mjx-op")[0];
-          under = node.getElementsByTagName("mjx-under")[0];
-          over = node.getElementsByTagName("mjx-over")[0];
+          base = CHTML.getNode(node,"mjx-op");
+          under = CHTML.getNode(node,"mjx-under");
+          over = CHTML.getNode(node,"mjx-over");
           nodes[0] = base; nodes[1] = under||over; nodes[2] = over;
         } else {
           var types = ["mjx-op","mjx-under","mjx-over"];
@@ -2232,9 +2252,9 @@
         //
         var base, sub, sup;
         if (stretch) {
-          base = node.getElementsByTagName("mjx-base")[0];
-          sub = node.getElementsByTagName("mjx-sub")[0];
-          sup = node.getElementsByTagName("mjx-sup")[0];
+          base = CHTML.getNode(node,"mjx-base");
+          sub = CHTML.getNode(node,"mjx-sub");
+          sup = CHTML.getNode(node,"mjx-sup");
         } else {
           var types = ["mjx-base","mjx-sub","mjx-sup"];
           if (this.sup === 1) types[1] = types[2];
diff --git a/unpacked/jax/output/SVG/jax.js b/unpacked/jax/output/SVG/jax.js
index 658934313..912a489bc 100644
--- a/unpacked/jax/output/SVG/jax.js
+++ b/unpacked/jax/output/SVG/jax.js
@@ -2100,9 +2100,8 @@
           //  Add it to the MathJax span
           //
           var alttext = this.Get("alttext");
-          if (alttext && !svg.element.getAttribute("aria-label")) span.setAttribute("aria-label",alttext);
-          if (!svg.element.getAttribute("role")) span.setAttribute("role","math");
-//        span.setAttribute("tabindex",0);  // causes focus outline, so disable for now
+          if (alttext && !svg.element.getAttribute("aria-label")) svg.element.setAttribute("aria-label",alttext);
+          if (!svg.element.getAttribute("role")) svg.element.setAttribute("role","img");
           svg.element.setAttribute("focusable","false");
           span.appendChild(svg.element);
           svg.element = null;