Fix javascript error

plugins/managesieve/managesieve.js

@@ -660,8 +660,9 @@ function rule_adv_switch(id, elem)
 
 function action_type_select(id)
 {
+console.log(id);
   var obj = document.getElementById('action_type' + id),
-    v = obj.value(), enabled = {},
+    v = obj.value, enabled = {},
     elems = {
       mailbox: document.getElementById('action_mailbox' + id),
       target: document.getElementById('action_target' + id),