diff --git a/assets/js/multicodetab.js b/assets/js/multicodetab.js
index 38db414ffb..9a8b9436e0 100644
--- a/assets/js/multicodetab.js
+++ b/assets/js/multicodetab.js
@@ -47,31 +47,74 @@ all copies or substantial portions of the Software.
 */
 
 jQuery.fn.minitabs = function(speed,effect) {
-  this.each(function() {
-      var id = "#" + $(this).attr('id')
+
+  function saveToLocal(lang){
+    console.log("saving language > " + lang);
+    window.localStorage.setItem('user-preferred-devlanguage', lang);
+  }
+
+  function showSelectedTabFromSaved(id){
+    // get any data from local stores. 
+    $savedValue = window.localStorage.getItem('user-preferred-devlanguage');
+  // show all tabs if value present
+    if($savedValue !== null) {
+      showSlectedTab($savedValue);
+    }else {
       $(id + ">DIV:gt(0)").hide();
       $(id + ">UL>LI>A:first").addClass("current");
+    }
+  }
+
+  function showSlectedTab(lang) {
+    // Hide all. 
+    // Tab heads
+    $(".multicode>UL>LI>A").removeClass("current");
+    // Tab contents
+    $(".multicode>DIV").hide(speed);
+
+    $(this).blur();
+    //show selcted. 
+    $(".multicode>UL>LI>."+lang).addClass("current");
+    $(".multicode>DIV."+lang).show(speed);
+
+    // TODO: Only add/remove on samples that DO contain that value. 
+    // Example
+    // if javascript is lang. 
+    // only add current if the UL has javascript in the tabs.  
+    // Otherwise this will hide all tabs and not show anything. 
+
+    // save in localstorage. 
+    saveToLocal(lang);
+  }
+
+  this.each(function() {
+      var id = "#" + $(this).attr('id')
+      //Use saved value or set to first tab
+      showSelectedTabFromSaved(id);
+
+      //Add click on each tab
       $(id + ">UL>LI>A").click(
         function(){
-          $(id + ">UL>LI>A").removeClass("current");
-          $(this).addClass("current");
-          $(this).blur();
-          var re = /([_\-\w]+$)/i;
-          var target = $('#' + re.exec(this.href)[1]);
-          var old = $(id + ">DIV");
-          switch (effect) {
-            case 'fade':
-              old.fadeOut(speed).fadeOut(speed);
-              target.fadeIn(speed);
-              break;
-            case 'slide':
-              old.slideUp(speed);
-              target.fadeOut(speed).fadeIn(speed);
-              break;
-            default :
-              old.hide(speed);
-              target.show(speed)
-          }
+          showSlectedTab($(this).attr('class'))
+
+          //Old 
+
+          // var re = /([_\-\w]+$)/i;
+          // var target = $('#' + re.exec(this.href)[1]);
+          // var old = $(id + ">DIV");
+          // switch (effect) {
+          //   case 'fade':
+          //     old.fadeOut(speed).fadeOut(speed);
+          //     target.fadeIn(speed);
+          //     break;
+          //   case 'slide':
+          //     old.slideUp(speed);
+          //     target.fadeOut(speed).fadeIn(speed);
+          //     break;
+          //   default :
+          //     old.hide(speed);
+          //     target.show(speed)
+          // }
           return false;
         }
      );
diff --git a/tool/filter_multicode_tabs.py b/tool/filter_multicode_tabs.py
new file mode 100644
index 0000000000..a98d5992eb
--- /dev/null
+++ b/tool/filter_multicode_tabs.py
@@ -0,0 +1,77 @@
+################################################################################
+## Multicode Tabs 2 filter                                                    ##
+## Author: Rome Reginelli                                                     ##
+## Copyright: Ripple Labs, Inc. 2016                                          ##
+##                                                                            ##
+## Finds multicode tab sections and turns them into properly-formatted        ##
+## HTML syntax to use with minitabs jQuery                                    ##
+################################################################################
+import re
+import logging
+
+MC_START_REGEX = re.compile(r"<!--\s*MULTICODE_BLOCK_START\s*-->")
+MC_END_REGEX = re.compile(r"<!--\s*MULTICODE_BLOCK_END\s*-->")
+
+def filter_html(html, mode="html", **kwargs):
+    """
+    Turn multicode comments into a div (after markdown inside is parsed). You
+    can use this div for styling even in PDF format. Doesn't apply to Markdown
+    since most parsers won't parse markdown inside HTML blocks.
+    """
+
+    if mode == "md":
+        return html
+
+    html = re.sub(MC_START_REGEX, "<div class='multicode'>", html)
+    html = re.sub(MC_END_REGEX, "</div>", html)
+    return html
+
+def filter_soup(soup, mode="html", **kwargs):
+    """Turn a multicode block into the correct syntax for minitabs, but only
+       in the HTML version."""
+    if mode != "html":
+        return
+
+    multicodes = soup.find_all(class_="multicode")
+    index1 = 0
+    for cb_area in multicodes:
+        cb_area["id"] = "code-%d" % index1
+
+        codetabs_ul = soup.new_tag("ul")
+        codetabs_ul["class"] = "codetabs"
+        cb_area.insert(0,codetabs_ul)
+
+        pres = cb_area.find_all(class_="codehilite")
+        index2 = 0
+        for pre in pres:
+            #make a unique ID for this code sample
+            linkid = "code-%d-%d" % (index1, index2)
+
+            #wrap this code sample in an ID'd div
+            code_sample_wrapper = soup.new_tag("div", id=linkid)
+            code_sample_wrapper["style"] = "position: static;"
+            pre.wrap(code_sample_wrapper)
+
+            #add a link to the tabs ul
+            linkback = soup.new_tag("a", href=("#%s" % linkid))
+            linkback_li = soup.new_tag("li")
+            
+            linkback_li.append(linkback)
+            codetabs_ul.append(linkback_li)
+
+            #find the text label for this sample
+            prev_p = code_sample_wrapper.find_previous_sibling("p")
+            try:
+                label = "".join(prev_p.em.strings)
+            except AttributeError:
+                label = "Code Sample %d-%d" % (index1, index2)
+            linkback.string = label
+            #add class with name of tab label
+            label_class = label.replace(" ","").replace("-","").lower()
+            linkback["class"] = label_class
+            code_sample_wrapper["class"] = "code_sample " + label_class
+            prev_p.decompose()
+
+            index2 += 1
+
+        index1 += 1
\ No newline at end of file