diff --git a/Documentation/doc/Documentation/Doxyfile.in b/Documentation/doc/Documentation/Doxyfile.in
index 45226a15e60..952c61acf1c 100644
--- a/Documentation/doc/Documentation/Doxyfile.in
+++ b/Documentation/doc/Documentation/Doxyfile.in
@@ -15,6 +15,7 @@ EXAMPLE_PATH        = ${CGAL_Convex_hull_2_EXAMPLE_DIR} \
 FILTER_PATTERNS     = *.txt=${CMAKE_BINARY_DIR}/pkglist_filter
 
 HTML_EXTRA_FILES += ${CGAL_DOC_RESOURCE_DIR}/hacks.js \
+                    ${CGAL_DOC_RESOURCE_DIR}/menu_version.js \
                     ${CGAL_DOC_RESOURCE_DIR}/cgal_stylesheet.css \
                     ${CMAKE_BINARY_DIR}/how_to_cite_cgal.bib \
                     ${CMAKE_BINARY_DIR}/how_to_cite.html
diff --git a/Documentation/doc/resources/1.8.13/hacks.js b/Documentation/doc/resources/1.8.13/hacks.js
index ba29bb94521..4c0436c91d2 100644
--- a/Documentation/doc/resources/1.8.13/hacks.js
+++ b/Documentation/doc/resources/1.8.13/hacks.js
@@ -90,3 +90,19 @@ $(document).ready(function() {
  * Version 1.2.2
  */
 (function(c){c.fn.footnotes=function(d){var e=c.extend({},c.fn.footnotes.defaults,d);return this.each(function(f){b("INFO: Building footnotes for "+(f+1)+"...",e.debugMode);c(e.footnotes,this).addClass(e.autoFootnoteClass);var h=(""===e.contentBlock)?c(this):c(e.contentBlock,this),g=e.orderedList?"<ol/>":"<ul/>";c("."+e.autoFootnoteClass).each(function(l){var t=-1,n=f+"-"+l,q=c(this),j,r,s,u,p,m,o,k;if(e.singleFootnoteDestination){j=c("#"+e.destination);if(0===j.length){b("INFO: No #autoFootnotes found; adding our own",e.debugMode);j=c(g).attr("id",e.destination).addClass("footnotesList").appendTo(h)}}else{j=c("#"+e.destination+f);if(0===j.length){b("INFO: No #autoFootnotes"+f+" found; adding our own for "+(f+1),e.debugMode);j=c(g).attr("id",e.destination+f).addClass("footnotesList").appendTo(h)}}q.removeClass(e.autoFootnoteClass);r=e.fnExtractFootnote(this);t=-1;n=f+"-"+l;j.find("li > .footnoteContent").each(function(i){var v=c(this);if(v.html()===r){t=i;s=c(v.parents("li").get(0));return false}});if(-1===t){u=c("<a/>").attr("href","#cite-text-"+n).attr("name","cite-ref-"+n).attr("id","cite-ref-"+n).attr("dir","ltr").attr("title",r).text("["+(j.find("li").length+1)+"]").addClass("footnoteLink");if(q.is(e.prependTags)){c("<sup/>").prependTo(this).append(u)}else{c("<sup/>").appendTo(this).append(u)}p=c("<li/>").attr("id","cite-text-"+n);m=c("<span/>").addClass("footnoteBackReferenceGroup").appendTo(p);c("<span/>").addClass("footnoteContent").html(r).appendTo(p);u=c("<a/>").text("^").attr("href","#cite-ref-"+n).addClass("footnoteBackref").prependTo(m);j.append(p)}else{n=f+"-"+t;m=c(c("li > .footnoteBackReferenceGroup",j).get(t));o=m.find(".footnoteBackref");k=o.length;if(0===o.length){b("ERROR: $backRefs.length == 0, which should have prevented this code path",e.debugMode)}else{if(1===o.length){c("<sup/>").text("^ ").addClass("footnoteBackref").prependTo(m);o.html("<sup>a</sup>");++k}u=c("<a/>").attr("href","#"+s.attr("id")).attr("name","cite-ref-"+n+"-"+o.length).attr("id","cite-ref-"+n+"-"+o.length).attr("title",r).text("["+(t+1)+"]").addClass("footnoteLink");if(q.is(e.prependTags)){c("<sup/>").prependTo(this).append(u)}else{c("<sup/>").appendTo(this).append(u)}u=c("<a/>").attr("href","#cite-ref-"+n+"-"+o.length).addClass("footnoteBackref");if(k>=26){b("WARN: multiple letter functionality is probably broken when more than 26 footnotes exist",e.debugMode)}u.prepend(String.fromCharCode((k)+96));c("<sup/>").appendTo(m).append(u)}}});b("INFO: Done building footnotes for "+(f+1),e.debugMode)})};c.fn.footnotes.version=function(){return"1.2.2"};c.fn.footnotes.defaults={footnotes:"blockquote[title],span.footnote,blockquote[cite]",prependTags:"blockquote",singleFootnoteDestination:false,destination:"autoFootnotes",contentBlock:".content",autoFootnoteClass:"autoFootnote",fnExtractFootnote:a,orderedList:true,debugMode:true};function b(e,d){if(d){if(window.console&&window.console.log){window.console.log(e)}}}function a(i){var j=c(i),e,f,h,g,d;if(j.is("span.footnote")){e=c(i).html();f=/^(?:(?:&nbsp;)|\s)*\(([\S\s]+)\)(?:(?:&nbsp;)|\s)*$/;h=e.match(f);if(h&&2===h.length){e=h[1]}j.empty()}else{if(j.is("blockquote[title]")){g=j.attr("cite");e=j.attr("title");if(""!==g){d=c("<a/>").attr("href",g);if(0===c(e).length){e=d.text(e)}else{e=d.text(g).wrap("<span/>").parent().append(": "+e);j.attr("title","")}}}else{if(j.is("blockquote[cite]")){g=j.attr("cite");e=c("<a/>").attr("href",g).text(g)}}}return e}})(jQuery);
+(function(){
+    if(window.location.href.includes("doc.cgal.org")){ 
+      var url='https://doc.cgal.org/latest/Manual/menu_version.js';
+      var script = document.createElement("script"); // Make a script DOM node
+      script.src = url; // Set it's src to the provided URL
+      document.head.appendChild(script);
+    }
+    else
+    {
+      var url='../Manual/menu_version.js';
+      var script = document.createElement("script"); // Make a script DOM node
+      script.src = url; // Set it's src to the provided URL
+      document.head.appendChild(script);
+    }
+})();
+
diff --git a/Documentation/doc/resources/1.8.13/menu_version.js b/Documentation/doc/resources/1.8.13/menu_version.js
new file mode 100644
index 00000000000..6bd5b1f4f57
--- /dev/null
+++ b/Documentation/doc/resources/1.8.13/menu_version.js
@@ -0,0 +1,86 @@
+(function() {
+  'use strict';
+
+  var url_re =  /(cgal\.geometryfactory\.com\/CGAL\/doc\/|doc\.cgal\.org\/)(master|latest|(\d\.\d+|\d\.\d+\.\d+))\//;
+  var url_local =  /.*\/doc_output\//;
+  var all_versions = [
+    'master',
+    'latest',
+    '4.12',
+    '4.11.1',
+    '4.10.2',
+    '4.9.1',
+    '4.8.2',
+    '4.7',
+    '4.6.3',
+    '4.5.2',
+    '4.4',
+    '4.3'
+  ];
+
+  function build_select(current_version) {
+    var buf = ['<select>'];
+
+    $.each(all_versions, function(id) {
+      var version = all_versions[id];
+      buf.push('<option value="' + version + '"');
+      if (version == current_version) {
+        buf.push(' selected="selected">' + version);
+      } else {
+        buf.push('>' + version);
+      }
+      buf.push('</option>');
+    });
+
+    buf.push('</select>');
+    return buf.join('');
+  }
+
+  function patch_url(url, new_version) {
+    if(url.includes("doc.cgal.org")||url.includes("cgal.geometryfactory.com")){  
+      return url.replace(url_re, 'doc.cgal.org/' + new_version + '/');
+    }
+    else{
+      return url.replace(url_local, 'https://doc.cgal.org/' + new_version + '/');
+    }
+  }
+
+  function on_switch() {
+    var selected = $(this).children('option:selected').attr('value');
+    var url = window.location.href,
+        new_url = patch_url(url, selected);
+    if (new_url != url) {
+      window.location.href = new_url;
+    }
+  }
+
+  $(document).ready(function() {
+      var motherNode=$("#back-nav ul")[0];
+      var node = document.createElement("LI");
+      var spanNode = document.createElement("SPAN");
+      var titleNode =document.createTextNode("CGAL Version: "); 
+      var textNode = document.createTextNode("x.y");
+      spanNode.setAttribute("class", "version_menu");
+      spanNode.appendChild(textNode);
+      node.appendChild(titleNode);
+      node.appendChild(spanNode);
+      motherNode.insertBefore(node, motherNode.firstChild);
+      $("#back-nav").css("padding-top", "0").css("padding-bottom", "0");
+      var match = url_re.exec(window.location.href);
+      if (match) {
+        var version = match[2];
+        var select = build_select(version);
+        spanNode.innerHTML=select;
+        $('.version_menu select').bind('change', on_switch);
+      }
+      else {
+        match = url_local.exec(window.location.href);
+        if (match) {
+          var version = '4.11';
+          var select = build_select(version);
+          spanNode.innerHTML=select;
+          $('.version_menu select').bind('change', on_switch);
+        }
+     }
+  });
+})(); 
diff --git a/Documentation/doc/resources/1.8.14/hacks.js b/Documentation/doc/resources/1.8.14/hacks.js
index ba29bb94521..4c0436c91d2 100644
--- a/Documentation/doc/resources/1.8.14/hacks.js
+++ b/Documentation/doc/resources/1.8.14/hacks.js
@@ -90,3 +90,19 @@ $(document).ready(function() {
  * Version 1.2.2
  */
 (function(c){c.fn.footnotes=function(d){var e=c.extend({},c.fn.footnotes.defaults,d);return this.each(function(f){b("INFO: Building footnotes for "+(f+1)+"...",e.debugMode);c(e.footnotes,this).addClass(e.autoFootnoteClass);var h=(""===e.contentBlock)?c(this):c(e.contentBlock,this),g=e.orderedList?"<ol/>":"<ul/>";c("."+e.autoFootnoteClass).each(function(l){var t=-1,n=f+"-"+l,q=c(this),j,r,s,u,p,m,o,k;if(e.singleFootnoteDestination){j=c("#"+e.destination);if(0===j.length){b("INFO: No #autoFootnotes found; adding our own",e.debugMode);j=c(g).attr("id",e.destination).addClass("footnotesList").appendTo(h)}}else{j=c("#"+e.destination+f);if(0===j.length){b("INFO: No #autoFootnotes"+f+" found; adding our own for "+(f+1),e.debugMode);j=c(g).attr("id",e.destination+f).addClass("footnotesList").appendTo(h)}}q.removeClass(e.autoFootnoteClass);r=e.fnExtractFootnote(this);t=-1;n=f+"-"+l;j.find("li > .footnoteContent").each(function(i){var v=c(this);if(v.html()===r){t=i;s=c(v.parents("li").get(0));return false}});if(-1===t){u=c("<a/>").attr("href","#cite-text-"+n).attr("name","cite-ref-"+n).attr("id","cite-ref-"+n).attr("dir","ltr").attr("title",r).text("["+(j.find("li").length+1)+"]").addClass("footnoteLink");if(q.is(e.prependTags)){c("<sup/>").prependTo(this).append(u)}else{c("<sup/>").appendTo(this).append(u)}p=c("<li/>").attr("id","cite-text-"+n);m=c("<span/>").addClass("footnoteBackReferenceGroup").appendTo(p);c("<span/>").addClass("footnoteContent").html(r).appendTo(p);u=c("<a/>").text("^").attr("href","#cite-ref-"+n).addClass("footnoteBackref").prependTo(m);j.append(p)}else{n=f+"-"+t;m=c(c("li > .footnoteBackReferenceGroup",j).get(t));o=m.find(".footnoteBackref");k=o.length;if(0===o.length){b("ERROR: $backRefs.length == 0, which should have prevented this code path",e.debugMode)}else{if(1===o.length){c("<sup/>").text("^ ").addClass("footnoteBackref").prependTo(m);o.html("<sup>a</sup>");++k}u=c("<a/>").attr("href","#"+s.attr("id")).attr("name","cite-ref-"+n+"-"+o.length).attr("id","cite-ref-"+n+"-"+o.length).attr("title",r).text("["+(t+1)+"]").addClass("footnoteLink");if(q.is(e.prependTags)){c("<sup/>").prependTo(this).append(u)}else{c("<sup/>").appendTo(this).append(u)}u=c("<a/>").attr("href","#cite-ref-"+n+"-"+o.length).addClass("footnoteBackref");if(k>=26){b("WARN: multiple letter functionality is probably broken when more than 26 footnotes exist",e.debugMode)}u.prepend(String.fromCharCode((k)+96));c("<sup/>").appendTo(m).append(u)}}});b("INFO: Done building footnotes for "+(f+1),e.debugMode)})};c.fn.footnotes.version=function(){return"1.2.2"};c.fn.footnotes.defaults={footnotes:"blockquote[title],span.footnote,blockquote[cite]",prependTags:"blockquote",singleFootnoteDestination:false,destination:"autoFootnotes",contentBlock:".content",autoFootnoteClass:"autoFootnote",fnExtractFootnote:a,orderedList:true,debugMode:true};function b(e,d){if(d){if(window.console&&window.console.log){window.console.log(e)}}}function a(i){var j=c(i),e,f,h,g,d;if(j.is("span.footnote")){e=c(i).html();f=/^(?:(?:&nbsp;)|\s)*\(([\S\s]+)\)(?:(?:&nbsp;)|\s)*$/;h=e.match(f);if(h&&2===h.length){e=h[1]}j.empty()}else{if(j.is("blockquote[title]")){g=j.attr("cite");e=j.attr("title");if(""!==g){d=c("<a/>").attr("href",g);if(0===c(e).length){e=d.text(e)}else{e=d.text(g).wrap("<span/>").parent().append(": "+e);j.attr("title","")}}}else{if(j.is("blockquote[cite]")){g=j.attr("cite");e=c("<a/>").attr("href",g).text(g)}}}return e}})(jQuery);
+(function(){
+    if(window.location.href.includes("doc.cgal.org")){ 
+      var url='https://doc.cgal.org/latest/Manual/menu_version.js';
+      var script = document.createElement("script"); // Make a script DOM node
+      script.src = url; // Set it's src to the provided URL
+      document.head.appendChild(script);
+    }
+    else
+    {
+      var url='../Manual/menu_version.js';
+      var script = document.createElement("script"); // Make a script DOM node
+      script.src = url; // Set it's src to the provided URL
+      document.head.appendChild(script);
+    }
+})();
+
diff --git a/Documentation/doc/resources/1.8.14/menu_version.js b/Documentation/doc/resources/1.8.14/menu_version.js
new file mode 100644
index 00000000000..6bd5b1f4f57
--- /dev/null
+++ b/Documentation/doc/resources/1.8.14/menu_version.js
@@ -0,0 +1,86 @@
+(function() {
+  'use strict';
+
+  var url_re =  /(cgal\.geometryfactory\.com\/CGAL\/doc\/|doc\.cgal\.org\/)(master|latest|(\d\.\d+|\d\.\d+\.\d+))\//;
+  var url_local =  /.*\/doc_output\//;
+  var all_versions = [
+    'master',
+    'latest',
+    '4.12',
+    '4.11.1',
+    '4.10.2',
+    '4.9.1',
+    '4.8.2',
+    '4.7',
+    '4.6.3',
+    '4.5.2',
+    '4.4',
+    '4.3'
+  ];
+
+  function build_select(current_version) {
+    var buf = ['<select>'];
+
+    $.each(all_versions, function(id) {
+      var version = all_versions[id];
+      buf.push('<option value="' + version + '"');
+      if (version == current_version) {
+        buf.push(' selected="selected">' + version);
+      } else {
+        buf.push('>' + version);
+      }
+      buf.push('</option>');
+    });
+
+    buf.push('</select>');
+    return buf.join('');
+  }
+
+  function patch_url(url, new_version) {
+    if(url.includes("doc.cgal.org")||url.includes("cgal.geometryfactory.com")){  
+      return url.replace(url_re, 'doc.cgal.org/' + new_version + '/');
+    }
+    else{
+      return url.replace(url_local, 'https://doc.cgal.org/' + new_version + '/');
+    }
+  }
+
+  function on_switch() {
+    var selected = $(this).children('option:selected').attr('value');
+    var url = window.location.href,
+        new_url = patch_url(url, selected);
+    if (new_url != url) {
+      window.location.href = new_url;
+    }
+  }
+
+  $(document).ready(function() {
+      var motherNode=$("#back-nav ul")[0];
+      var node = document.createElement("LI");
+      var spanNode = document.createElement("SPAN");
+      var titleNode =document.createTextNode("CGAL Version: "); 
+      var textNode = document.createTextNode("x.y");
+      spanNode.setAttribute("class", "version_menu");
+      spanNode.appendChild(textNode);
+      node.appendChild(titleNode);
+      node.appendChild(spanNode);
+      motherNode.insertBefore(node, motherNode.firstChild);
+      $("#back-nav").css("padding-top", "0").css("padding-bottom", "0");
+      var match = url_re.exec(window.location.href);
+      if (match) {
+        var version = match[2];
+        var select = build_select(version);
+        spanNode.innerHTML=select;
+        $('.version_menu select').bind('change', on_switch);
+      }
+      else {
+        match = url_local.exec(window.location.href);
+        if (match) {
+          var version = '4.11';
+          var select = build_select(version);
+          spanNode.innerHTML=select;
+          $('.version_menu select').bind('change', on_switch);
+        }
+     }
+  });
+})(); 
diff --git a/Documentation/doc/resources/1.8.4/hacks.js b/Documentation/doc/resources/1.8.4/hacks.js
index ba29bb94521..4c0436c91d2 100644
--- a/Documentation/doc/resources/1.8.4/hacks.js
+++ b/Documentation/doc/resources/1.8.4/hacks.js
@@ -90,3 +90,19 @@ $(document).ready(function() {
  * Version 1.2.2
  */
 (function(c){c.fn.footnotes=function(d){var e=c.extend({},c.fn.footnotes.defaults,d);return this.each(function(f){b("INFO: Building footnotes for "+(f+1)+"...",e.debugMode);c(e.footnotes,this).addClass(e.autoFootnoteClass);var h=(""===e.contentBlock)?c(this):c(e.contentBlock,this),g=e.orderedList?"<ol/>":"<ul/>";c("."+e.autoFootnoteClass).each(function(l){var t=-1,n=f+"-"+l,q=c(this),j,r,s,u,p,m,o,k;if(e.singleFootnoteDestination){j=c("#"+e.destination);if(0===j.length){b("INFO: No #autoFootnotes found; adding our own",e.debugMode);j=c(g).attr("id",e.destination).addClass("footnotesList").appendTo(h)}}else{j=c("#"+e.destination+f);if(0===j.length){b("INFO: No #autoFootnotes"+f+" found; adding our own for "+(f+1),e.debugMode);j=c(g).attr("id",e.destination+f).addClass("footnotesList").appendTo(h)}}q.removeClass(e.autoFootnoteClass);r=e.fnExtractFootnote(this);t=-1;n=f+"-"+l;j.find("li > .footnoteContent").each(function(i){var v=c(this);if(v.html()===r){t=i;s=c(v.parents("li").get(0));return false}});if(-1===t){u=c("<a/>").attr("href","#cite-text-"+n).attr("name","cite-ref-"+n).attr("id","cite-ref-"+n).attr("dir","ltr").attr("title",r).text("["+(j.find("li").length+1)+"]").addClass("footnoteLink");if(q.is(e.prependTags)){c("<sup/>").prependTo(this).append(u)}else{c("<sup/>").appendTo(this).append(u)}p=c("<li/>").attr("id","cite-text-"+n);m=c("<span/>").addClass("footnoteBackReferenceGroup").appendTo(p);c("<span/>").addClass("footnoteContent").html(r).appendTo(p);u=c("<a/>").text("^").attr("href","#cite-ref-"+n).addClass("footnoteBackref").prependTo(m);j.append(p)}else{n=f+"-"+t;m=c(c("li > .footnoteBackReferenceGroup",j).get(t));o=m.find(".footnoteBackref");k=o.length;if(0===o.length){b("ERROR: $backRefs.length == 0, which should have prevented this code path",e.debugMode)}else{if(1===o.length){c("<sup/>").text("^ ").addClass("footnoteBackref").prependTo(m);o.html("<sup>a</sup>");++k}u=c("<a/>").attr("href","#"+s.attr("id")).attr("name","cite-ref-"+n+"-"+o.length).attr("id","cite-ref-"+n+"-"+o.length).attr("title",r).text("["+(t+1)+"]").addClass("footnoteLink");if(q.is(e.prependTags)){c("<sup/>").prependTo(this).append(u)}else{c("<sup/>").appendTo(this).append(u)}u=c("<a/>").attr("href","#cite-ref-"+n+"-"+o.length).addClass("footnoteBackref");if(k>=26){b("WARN: multiple letter functionality is probably broken when more than 26 footnotes exist",e.debugMode)}u.prepend(String.fromCharCode((k)+96));c("<sup/>").appendTo(m).append(u)}}});b("INFO: Done building footnotes for "+(f+1),e.debugMode)})};c.fn.footnotes.version=function(){return"1.2.2"};c.fn.footnotes.defaults={footnotes:"blockquote[title],span.footnote,blockquote[cite]",prependTags:"blockquote",singleFootnoteDestination:false,destination:"autoFootnotes",contentBlock:".content",autoFootnoteClass:"autoFootnote",fnExtractFootnote:a,orderedList:true,debugMode:true};function b(e,d){if(d){if(window.console&&window.console.log){window.console.log(e)}}}function a(i){var j=c(i),e,f,h,g,d;if(j.is("span.footnote")){e=c(i).html();f=/^(?:(?:&nbsp;)|\s)*\(([\S\s]+)\)(?:(?:&nbsp;)|\s)*$/;h=e.match(f);if(h&&2===h.length){e=h[1]}j.empty()}else{if(j.is("blockquote[title]")){g=j.attr("cite");e=j.attr("title");if(""!==g){d=c("<a/>").attr("href",g);if(0===c(e).length){e=d.text(e)}else{e=d.text(g).wrap("<span/>").parent().append(": "+e);j.attr("title","")}}}else{if(j.is("blockquote[cite]")){g=j.attr("cite");e=c("<a/>").attr("href",g).text(g)}}}return e}})(jQuery);
+(function(){
+    if(window.location.href.includes("doc.cgal.org")){ 
+      var url='https://doc.cgal.org/latest/Manual/menu_version.js';
+      var script = document.createElement("script"); // Make a script DOM node
+      script.src = url; // Set it's src to the provided URL
+      document.head.appendChild(script);
+    }
+    else
+    {
+      var url='../Manual/menu_version.js';
+      var script = document.createElement("script"); // Make a script DOM node
+      script.src = url; // Set it's src to the provided URL
+      document.head.appendChild(script);
+    }
+})();
+
diff --git a/Documentation/doc/resources/1.8.4/menu_version.js b/Documentation/doc/resources/1.8.4/menu_version.js
new file mode 100644
index 00000000000..6bd5b1f4f57
--- /dev/null
+++ b/Documentation/doc/resources/1.8.4/menu_version.js
@@ -0,0 +1,86 @@
+(function() {
+  'use strict';
+
+  var url_re =  /(cgal\.geometryfactory\.com\/CGAL\/doc\/|doc\.cgal\.org\/)(master|latest|(\d\.\d+|\d\.\d+\.\d+))\//;
+  var url_local =  /.*\/doc_output\//;
+  var all_versions = [
+    'master',
+    'latest',
+    '4.12',
+    '4.11.1',
+    '4.10.2',
+    '4.9.1',
+    '4.8.2',
+    '4.7',
+    '4.6.3',
+    '4.5.2',
+    '4.4',
+    '4.3'
+  ];
+
+  function build_select(current_version) {
+    var buf = ['<select>'];
+
+    $.each(all_versions, function(id) {
+      var version = all_versions[id];
+      buf.push('<option value="' + version + '"');
+      if (version == current_version) {
+        buf.push(' selected="selected">' + version);
+      } else {
+        buf.push('>' + version);
+      }
+      buf.push('</option>');
+    });
+
+    buf.push('</select>');
+    return buf.join('');
+  }
+
+  function patch_url(url, new_version) {
+    if(url.includes("doc.cgal.org")||url.includes("cgal.geometryfactory.com")){  
+      return url.replace(url_re, 'doc.cgal.org/' + new_version + '/');
+    }
+    else{
+      return url.replace(url_local, 'https://doc.cgal.org/' + new_version + '/');
+    }
+  }
+
+  function on_switch() {
+    var selected = $(this).children('option:selected').attr('value');
+    var url = window.location.href,
+        new_url = patch_url(url, selected);
+    if (new_url != url) {
+      window.location.href = new_url;
+    }
+  }
+
+  $(document).ready(function() {
+      var motherNode=$("#back-nav ul")[0];
+      var node = document.createElement("LI");
+      var spanNode = document.createElement("SPAN");
+      var titleNode =document.createTextNode("CGAL Version: "); 
+      var textNode = document.createTextNode("x.y");
+      spanNode.setAttribute("class", "version_menu");
+      spanNode.appendChild(textNode);
+      node.appendChild(titleNode);
+      node.appendChild(spanNode);
+      motherNode.insertBefore(node, motherNode.firstChild);
+      $("#back-nav").css("padding-top", "0").css("padding-bottom", "0");
+      var match = url_re.exec(window.location.href);
+      if (match) {
+        var version = match[2];
+        var select = build_select(version);
+        spanNode.innerHTML=select;
+        $('.version_menu select').bind('change', on_switch);
+      }
+      else {
+        match = url_local.exec(window.location.href);
+        if (match) {
+          var version = '4.11';
+          var select = build_select(version);
+          spanNode.innerHTML=select;
+          $('.version_menu select').bind('change', on_switch);
+        }
+     }
+  });
+})();