First commit of the V2.

New base, new info.

static/admin/js/collapse.js

@@ -0,0 +1,26 @@
+/*global gettext*/
+(function($) {
+    'use strict';
+    $(document).ready(function() {
+        // Add anchor tag for Show/Hide link
+        $("fieldset.collapse").each(function(i, elem) {
+            // Don't hide if fields in this fieldset have errors
+            if ($(elem).find("div.errors").length === 0) {
+                $(elem).addClass("collapsed").find("h2").first().append(' (<a id="fieldsetcollapser' +
+                    i + '" class="collapse-toggle" href="#">' + gettext("Show") +
+                    '</a>)');
+            }
+        });
+        // Add toggle to anchor tag
+        $("fieldset.collapse a.collapse-toggle").click(function(ev) {
+            if ($(this).closest("fieldset").hasClass("collapsed")) {
+                // Show
+                $(this).text(gettext("Hide")).closest("fieldset").removeClass("collapsed").trigger("show.fieldset", [$(this).attr("id")]);
+            } else {
+                // Hide
+                $(this).text(gettext("Show")).closest("fieldset").addClass("collapsed").trigger("hide.fieldset", [$(this).attr("id")]);
+            }
+            return false;
+        });
+    });
+})(django.jQuery);