diff --git a/website/layouts/functions.erb b/website/layouts/functions.erb
index 74c248a78..2e70a7d5d 100644
--- a/website/layouts/functions.erb
+++ b/website/layouts/functions.erb
@@ -102,7 +102,225 @@
               </li>
 
             </ul>
+
+          <li<%= sidebar_current("docs-funcs-collection") %>>
+            <a href="#">Collection Functions</a>
+            <ul class="nav nav-visible">
+
+              <li<%= sidebar_current("docs-funcs-collection-chunklist") %>>
+                <a href="/docs/configuration/functions/chunklist.html">chunklist</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-coalesce-x") %>>
+                <a href="/docs/configuration/functions/coalesce.html">coalesce</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-coalescelist") %>>
+                <a href="/docs/configuration/functions/coalescelist.html">coalescelist</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-compact") %>>
+                <a href="/docs/configuration/functions/compact.html">compact</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-contains") %>>
+                <a href="/docs/configuration/functions/contains.html">contains</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-distinct") %>>
+                <a href="/docs/configuration/functions/distinct.html">distinct</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-element") %>>
+                <a href="/docs/configuration/functions/element.html">element</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-flatten") %>>
+                <a href="/docs/configuration/functions/flatten.html">flatten</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-index") %>>
+                <a href="/docs/configuration/functions/index.html">index</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-length") %>>
+                <a href="/docs/configuration/functions/length.html">length</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-list") %>>
+                <a href="/docs/configuration/functions/list.html">list</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-map") %>>
+                <a href="/docs/configuration/functions/map.html">map</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-matchkeys") %>>
+                <a href="/docs/configuration/functions/matchkeys.html">matchkeys</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-merge") %>>
+                <a href="/docs/configuration/functions/merge.html">merge</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-slice") %>>
+                <a href="/docs/configuration/functions/slice.html">slice</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-sort") %>>
+                <a href="/docs/configuration/functions/sort.html">sort</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-transpose") %>>
+                <a href="/docs/configuration/functions/transpose.html">transpose</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-collection-zipmap") %>>
+                <a href="/docs/configuration/functions/zipmap.html">zipmap</a>
+              </li>
+
+            </ul>
           </li>
+
+          <li<%= sidebar_current("docs-funcs-encoding") %>>
+            <a href="#">Encoding Functions</a>
+            <ul class="nav nav-visible">
+
+              <li<%= sidebar_current("docs-funcs-encoding-base64decode") %>>
+                <a href="/docs/configuration/functions/base64decode.html">base64decode</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-encoding-base64encode") %>>
+                <a href="/docs/configuration/functions/base64encode.html">base64encode</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-encoding-base64gzip") %>>
+                <a href="/docs/configuration/functions/base64gzip.html">base64gzip</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-encoding-csvdecode") %>>
+                <a href="/docs/configuration/functions/csvdecode.html">csvdecode</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-encoding-jsondecode") %>>
+                <a href="/docs/configuration/functions/jsondecode.html">jsondecode</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-encoding-jsonencode") %>>
+                <a href="/docs/configuration/functions/jsonencode.html">jsonencode</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-encoding-urlencode") %>>
+                <a href="/docs/configuration/functions/urlencode.html">urlencode</a>
+              </li>
+
+            </ul>
+          </li>
+
+          <li<%= sidebar_current("docs-funcs-file") %>>
+            <a href="#">Filesystem Functions</a>
+            <ul class="nav nav-visible">
+
+              <li<%= sidebar_current("docs-funcs-file-dirname") %>>
+                <a href="/docs/configuration/functions/dirname.html">dirname</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-file-pathexpand") %>>
+                <a href="/docs/configuration/functions/pathexpand.html">pathexpand</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-file-basename") %>>
+                <a href="/docs/configuration/functions/basename.html">basename</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-file-file") %>>
+                <a href="/docs/configuration/functions/file.html">file</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-file-filebase64") %>>
+                <a href="/docs/configuration/functions/filebase64.html">filebase64</a>
+              </li>
+
+            </ul>
+          </li>
+
+          <li<%= sidebar_current("docs-funcs-datetime") %>>
+            <a href="#">Date and Time Functions</a>
+            <ul class="nav nav-visible">
+
+              <li<%= sidebar_current("docs-funcs-datetime-timeadd") %>>
+                <a href="/docs/configuration/functions/timeadd.html">timeadd</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-datetime-timestamp") %>>
+                <a href="/docs/configuration/functions/timestamp.html">timestamp</a>
+              </li>
+
+            </ul>
+          </li>
+
+          <li<%= sidebar_current("docs-funcs-crypto") %>>
+            <a href="#">Hash and Crypto Functions</a>
+            <ul class="nav nav-visible">
+
+              <li<%= sidebar_current("docs-funcs-crypto-base64sha256") %>>
+                <a href="/docs/configuration/functions/base64sha256.html">base64sha256</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-crypto-base64sha512") %>>
+                <a href="/docs/configuration/functions/base64sha512.html">base64sha512</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-crypto-bcrypt") %>>
+                <a href="/docs/configuration/functions/bcrypt.html">bcrypt</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-crypto-md5") %>>
+                <a href="/docs/configuration/functions/md5.html">md5</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-crypto-rsadecrypt") %>>
+                <a href="/docs/configuration/functions/rsadecrypt.html">rsadecrypt</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-crypto-sha1") %>>
+                <a href="/docs/configuration/functions/sha1.html">sha1</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-crypto-sha256") %>>
+                <a href="/docs/configuration/functions/sha256.html">sha256</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-crypto-sha512") %>>
+                <a href="/docs/configuration/functions/sha512.html">sha512</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-crypto-uuid") %>>
+                <a href="/docs/configuration/functions/uuid.html">uuid</a>
+              </li>
+
+            </ul>
+          </li>
+
+          <li<%= sidebar_current("docs-funcs-ipnet") %>>
+            <a href="#">IP Network Functions</a>
+            <ul class="nav nav-visible">
+
+              <li<%= sidebar_current("docs-funcs-ipnet-cidrhost") %>>
+                <a href="/docs/configuration/functions/cidrhost.html">cidrhost</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-ipnet-cidrnetmask") %>>
+                <a href="/docs/configuration/functions/cidrnetmask.html">cidrnetmask</a>
+              </li>
+
+              <li<%= sidebar_current("docs-funcs-ipnet-cidrsubnet") %>>
+                <a href="/docs/configuration/functions/cidrsubnet.html">cidrsubnet</a>
+              </li>
+
+            </ul>
+          </li>
+
         </ul>
       </div>
     <% end %>