diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index f24baf5810..c59a7fd974 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -2763,7 +2763,7 @@ table .span24 {
 .dropdown-submenu > .dropdown-menu {
   top: 0;
   left: 100%;
-  margin-top: -5px;
+  margin-top: -6px;
   margin-left: -1px;
   -webkit-border-radius: 0 6px 6px 6px;
      -moz-border-radius: 0 6px 6px 6px;
@@ -2774,6 +2774,24 @@ table .span24 {
   display: block;
 }
 
+.dropdown-submenu > a:after {
+  display: block;
+  float: right;
+  width: 0;
+  height: 0;
+  margin-top: 5px;
+  margin-right: -10px;
+  border-color: transparent;
+  border-left-color: #cccccc;
+  border-style: solid;
+  border-width: 5px 0 5px 5px;
+  content: " ";
+}
+
+.dropdown-submenu:hover > a:after {
+  border-left-color: #ffffff;
+}
+
 .dropdown .dropdown-menu .nav-header {
   padding-right: 20px;
   padding-left: 20px;
diff --git a/docs/components.html b/docs/components.html
index c36eec9403..719a9e8743 100644
--- a/docs/components.html
+++ b/docs/components.html
@@ -122,16 +122,7 @@
                 <li><a tabindex="-1" href="#">Another action</a></li>
                 <li><a tabindex="-1" href="#">Something else here</a></li>
                 <li class="divider"></li>
-                <li class="dropdown-submenu">
-                  <a tabindex="-1" href="#">Separated link</a>
-                  <ul class="dropdown-menu">
-                    <li><a tabindex="-1" href="#">Second level link</a></li>
-                    <li><a tabindex="-1" href="#">Second level link</a></li>
-                    <li><a tabindex="-1" href="#">Second level link</a></li>
-                    <li><a tabindex="-1" href="#">Second level link</a></li>
-                    <li><a tabindex="-1" href="#">Second level link</a></li>
-                  </ul>
-                </li>
+                <li><a tabindex="-1" href="#">Separated link</a></li>
               </ul>
             </div>
           </div>
@@ -162,10 +153,50 @@
 </pre>
 
           <h2>Options</h2>
-          <p>...</p>
+          <p>Align menus to the right and add include additional levels of dropdowns.</p>
 
           <h3>Aligning the menus</h3>
-          <p>...</p>
+          <p>Add <code>.pull-right</code> to a <code>.dropdown-menu</code> to right align the dropdown menu.</p>
+<pre class="prettyprint linenums">
+&lt;ul class="dropdown-menu pull-right" role="menu" aria-labelledby="dLabel"&gt;
+  ...
+&lt;/ul&gt;
+</pre>
+
+          <h3>Sub menus on dropdowns</h3>
+          <p>Add an extra level of dropdown menus, appearing on hover like those of OS X, with some simple markup additions. Add <code>.dropdown-submenu</code> to any <code>li</code> in an existing dropdown menu for automatic styling.</p>
+          <div class="bs-docs-example">
+            <div class="dropdown clearfix">
+              <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu" style="display: block; position: static; margin-bottom: 5px;">
+                <li><a tabindex="-1" href="#">Action</a></li>
+                <li><a tabindex="-1" href="#">Another action</a></li>
+                <li><a tabindex="-1" href="#">Something else here</a></li>
+                <li class="divider"></li>
+                <li class="dropdown-submenu">
+                  <a tabindex="-1" href="#">More options</a>
+                  <ul class="dropdown-menu">
+                    <li><a tabindex="-1" href="#">Second level link</a></li>
+                    <li><a tabindex="-1" href="#">Second level link</a></li>
+                    <li><a tabindex="-1" href="#">Second level link</a></li>
+                    <li><a tabindex="-1" href="#">Second level link</a></li>
+                    <li><a tabindex="-1" href="#">Second level link</a></li>
+                  </ul>
+                </li>
+              </ul>
+            </div>
+          </div>
+<pre class="prettyprint linenums">
+&lt;ul class="dropdown-menu" role="menu" aria-labelledby="dLabel"&gt;
+  ...
+  &lt;li class="dropdown-submenu"&gt;
+    &lt;a tabindex="-1" href="#"&gt;More options&lt;/a&gt;
+    &lt;ul class="dropdown-menu"&gt;
+      ...
+    &lt;/ul&gt;
+  &lt;/li&gt;
+&lt;/ul&gt;
+</pre>
+
         </section>
 
 
diff --git a/docs/templates/pages/components.mustache b/docs/templates/pages/components.mustache
index e9022ee125..7ac31e2191 100644
--- a/docs/templates/pages/components.mustache
+++ b/docs/templates/pages/components.mustache
@@ -51,16 +51,7 @@
                 <li><a tabindex="-1" href="#">{{_i}}Another action{{/i}}</a></li>
                 <li><a tabindex="-1" href="#">{{_i}}Something else here{{/i}}</a></li>
                 <li class="divider"></li>
-                <li class="dropdown-submenu">
-                  <a tabindex="-1" href="#">{{_i}}Separated link{{/i}}</a>
-                  <ul class="dropdown-menu">
-                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
-                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
-                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
-                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
-                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
-                  </ul>
-                </li>
+                <li><a tabindex="-1" href="#">{{_i}}Separated link{{/i}}</a></li>
               </ul>
             </div>
           </div>{{! /example }}
@@ -91,10 +82,50 @@
 </pre>
 
           <h2>{{_i}}Options{{/i}}</h2>
-          <p>{{_i}}...{{/i}}</p>
+          <p>{{_i}}Align menus to the right and add include additional levels of dropdowns.{{/i}}</p>
 
           <h3>{{_i}}Aligning the menus{{/i}}</h3>
-          <p>{{_i}}...{{/i}}</p>
+          <p>{{_i}}Add <code>.pull-right</code> to a <code>.dropdown-menu</code> to right align the dropdown menu.{{/i}}</p>
+<pre class="prettyprint linenums">
+&lt;ul class="dropdown-menu pull-right" role="menu" aria-labelledby="dLabel"&gt;
+  ...
+&lt;/ul&gt;
+</pre>
+
+          <h3>{{_i}}Sub menus on dropdowns{{/i}}</h3>
+          <p>{{_i}}Add an extra level of dropdown menus, appearing on hover like those of OS X, with some simple markup additions. Add <code>.dropdown-submenu</code> to any <code>li</code> in an existing dropdown menu for automatic styling.{{/i}}</p>
+          <div class="bs-docs-example">
+            <div class="dropdown clearfix">
+              <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu" style="display: block; position: static; margin-bottom: 5px;">
+                <li><a tabindex="-1" href="#">{{_i}}Action{{/i}}</a></li>
+                <li><a tabindex="-1" href="#">{{_i}}Another action{{/i}}</a></li>
+                <li><a tabindex="-1" href="#">{{_i}}Something else here{{/i}}</a></li>
+                <li class="divider"></li>
+                <li class="dropdown-submenu">
+                  <a tabindex="-1" href="#">{{_i}}More options{{/i}}</a>
+                  <ul class="dropdown-menu">
+                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
+                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
+                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
+                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
+                    <li><a tabindex="-1" href="#">{{_i}}Second level link{{/i}}</a></li>
+                  </ul>
+                </li>
+              </ul>
+            </div>
+          </div>{{! /example }}
+<pre class="prettyprint linenums">
+&lt;ul class="dropdown-menu" role="menu" aria-labelledby="dLabel"&gt;
+  ...
+  &lt;li class="dropdown-submenu"&gt;
+    &lt;a tabindex="-1" href="#"&gt;{{_i}}More options{{/i}}&lt;/a&gt;
+    &lt;ul class="dropdown-menu"&gt;
+      ...
+    &lt;/ul&gt;
+  &lt;/li&gt;
+&lt;/ul&gt;
+</pre>
+
         </section>
 
 
diff --git a/less/dropdowns.less b/less/dropdowns.less
index a36c3a416f..fb85ca57af 100644
--- a/less/dropdowns.less
+++ b/less/dropdowns.less
@@ -176,7 +176,7 @@
 .dropdown-submenu > .dropdown-menu {
   top: 0;
   left: 100%;
-  margin-top: -5px;
+  margin-top: -6px;
   margin-left: -1px;
   -webkit-border-radius: 0 6px 6px 6px;
      -moz-border-radius: 0 6px 6px 6px;
@@ -186,6 +186,23 @@
   display: block;
 }
 
+.dropdown-submenu > a:after {
+  display: block;
+  content: " ";
+  float: right;
+  width: 0;
+  height: 0;
+  border-color: transparent;
+  border-style: solid;
+  border-width: 5px 0 5px 5px;
+  border-left-color: darken(@dropdownBackground, 20%);
+  margin-top: 5px;
+  margin-right: -10px;
+}
+.dropdown-submenu:hover > a:after {
+  border-left-color: @dropdownLinkColorHover;
+}
+
 
 // Tweak nav headers
 // -----------------