Fix JS for previous commit.

static/main.js

@@ -33,8 +33,11 @@ $(function() {
 
     // Switch style immediately without reloading the page:
     $("#style-options form").submit(function() {
-        var style = $(this).find('input[type="submit"]').prop("value");
+        var style = $(this).find('input[type="submit"]').data("style");
         var stylesheet = "/static/styles/" + style + ".css";
         $("#user-style").prop("href", stylesheet);
+        $("#style-options .cur").removeClass("cur").find(":submit")
+            .prop("disabled", false);
+        $(this).addClass("cur").find(":submit").prop("disabled", true);
     });
 });

templates/_default.mako

@@ -15,15 +15,10 @@
                     stitle = style.title()
                     url = url_for('staticv', filename='images/style/{}.png'.format(style))
                 %>
-                % if style == cur_style:
-                    <div class="cur">
-                        <div style="background-image: url('${url}')">${stitle}</div>
-                    </div>
-                % else:
-                    <form action="${url_for('set_style', style=style)}" method="post">
-                        <input type="submit" title="${stitle}" value="${stitle}" style="background-image: url('${url}')">
-                    </form>
-                % endif
+                <form action="${url_for('set_style', style=style)}" method="post"${' class="cur"' if style == cur_style else ''}>
+                    <input type="submit" title="${stitle}" value="${stitle}" data-style="${style}"${' disabled' if style == cur_style else ''}
+                        style="background-image: url('${url}')">
+                </form>
             % endfor
         </div>
     </div>