diff --git a/plugins/tasklist/tasklist.php b/plugins/tasklist/tasklist.php
index dfd8bd9b..35c59eea 100644
--- a/plugins/tasklist/tasklist.php
+++ b/plugins/tasklist/tasklist.php
@@ -1172,10 +1172,17 @@ class tasklist extends rcube_plugin
 
         $this->ui->init_templates();
         echo $this->api->output->parse('tasklist.taskedit', false, false);
+
+        $script_add = '';
+        foreach ($this->ui->get_gui_objects() as $obj => $id) {
+            $script_add .= rcmail_output::JS_OBJECT_NAME . ".gui_object('$obj', '$id');\n";
+        }
+
         echo html::tag('link', array('rel' => 'stylesheet', 'type' => 'text/css', 'href' => $this->url($this->local_skin_path() . '/tagedit.css'), 'nl' => true));
         echo html::tag('script', array('type' => 'text/javascript'),
-            "rcmail.set_env(" . json_encode($env) . ");\n".
-            "rcmail.add_label(" . json_encode($texts) . ");\n"
+            rcmail_output::JS_OBJECT_NAME . ".set_env(" . json_encode($env) . ");\n".
+            rcmail_output::JS_OBJECT_NAME . ".add_label(" . json_encode($texts) . ");\n".
+            $script_add
         );
         exit;
     }
diff --git a/plugins/tasklist/tasklist_ui.php b/plugins/tasklist/tasklist_ui.php
index 7d8f5137..66ff799c 100644
--- a/plugins/tasklist/tasklist_ui.php
+++ b/plugins/tasklist/tasklist_ui.php
@@ -27,6 +27,7 @@ class tasklist_ui
     private $rc;
     private $plugin;
     private $ready = false;
+    private $gui_objects = array();
 
     function __construct($plugin)
     {
@@ -175,7 +176,7 @@ class tasklist_ui
         }
 
         $this->rc->output->set_env('tasklists', $jsenv);
-        $this->rc->output->add_gui_object('tasklistslist', $attrib['id']);
+        $this->register_gui_object('tasklistslist', $attrib['id']);
 
         return html::tag('ul', $attrib, $html, html::$common_attrib);
     }
@@ -334,7 +335,7 @@ class tasklist_ui
         $input = new html_inputfield(array('name' => 'text', 'id' => 'quickaddinput'));
         $button = html::tag('input', array('type' => 'submit', 'value' => '+', 'title' => $this->plugin->gettext('createtask'), 'class' => 'button mainaction'));
 
-        $this->rc->output->add_gui_object('quickaddform', $attrib['id']);
+        $this->register_gui_object('quickaddform', $attrib['id']);
         return html::tag('form', $attrib, $label . $input->show() . $button);
     }
 
@@ -345,7 +346,7 @@ class tasklist_ui
     {
         $attrib += array('id' => 'rcmtaskslist');
 
-        $this->rc->output->add_gui_object('resultlist', $attrib['id']);
+        $this->register_gui_object('resultlist', $attrib['id']);
 
         unset($attrib['name']);
         return html::tag('ul', $attrib, '');
@@ -359,7 +360,7 @@ class tasklist_ui
         $attrib += array('id' => 'rcmtasktagslist');
         unset($attrib['name']);
 
-        $this->rc->output->add_gui_object('tagslist', $attrib['id']);
+        $this->register_gui_object('tagslist', $attrib['id']);
         return html::tag('ul', $attrib, '');
     }
 
@@ -369,7 +370,7 @@ class tasklist_ui
     function tags_editline($attrib)
     {
         $attrib += array('id' => 'rcmtasktagsedit');
-        $this->rc->output->add_gui_object('edittagline', $attrib['id']);
+        $this->register_gui_object('edittagline', $attrib['id']);
 
         $input = new html_inputfield(array('name' => 'tags[]', 'class' => 'tag', 'size' => $attrib['size'], 'tabindex' => $attrib['tabindex']));
         unset($attrib['tabindex']);
@@ -384,7 +385,7 @@ class tasklist_ui
         if (!$attrib['id'])
             $attrib['id'] = 'rcmtaskattachmentlist';
 
-        $this->rc->output->add_gui_object('attachmentlist', $attrib['id']);
+        $this->register_gui_object('attachmentlist', $attrib['id']);
 
         return html::tag('ul', $attrib, '', html::$common_attrib);
     }
@@ -423,7 +424,7 @@ class tasklist_ui
     function file_drop_area($attrib = array())
     {
         if ($attrib['id']) {
-            $this->rc->output->add_gui_object('filedrop', $attrib['id']);
+            $this->register_gui_object('filedrop', $attrib['id']);
             $this->rc->output->set_env('filedrop', array('action' => 'upload', 'fieldname' => '_attachments'));
         }
     }
@@ -477,4 +478,22 @@ class tasklist_ui
         $checkbox = new html_checkbox(array('name' => '_notify', 'id' => 'edit-attendees-donotify', 'value' => 1));
         return html::div($attrib, html::label(null, $checkbox->show(1) . ' ' . $this->plugin->gettext('sendnotifications')));
     }
+
+    /**
+     * Wrapper for rcube_output_html::add_gui_object()
+     */
+    function register_gui_object($name, $id)
+    {
+        $this->gui_objects[$name] = $id;
+        $this->rc->output->add_gui_object($name, $id);
+    }
+
+    /**
+     * Getter for registered gui objects.
+     * (for manual registration when loading the inline UI)
+     */
+    function get_gui_objects()
+    {
+        return $this->gui_objects;
+    }
 }