Dear community, dear developers,

my question concerns about how it is possible to append HTML in an textarea of an iframe's parent window.

First of all, i would like to give you an short overview about the related files:

* insert_media.php (a PHP file, which represents a self-made filebrowser)
* article.php (a PHP file, which inherits logic to edit and create articles)
** <textarea id="content"> (the textarea which should accept HTML from "insert_media.php")

I'm using CKEditor for my project and wanted to add a selfmade filebrowser for including media into my articles. Therefore i created a "insert_media.php", which inherits all necessary logic to retrieve media items from a database.

The "insert_media.php" is opened inside "article.php" via TopUp (JS library) in form of a lightbox iframe - for sure "article.php" has jQuery loaded in its header.

Now, when I'm clicking on a media item (inside "insert_media,php"), i want to have the content of my textarea "#content" (inside "article.php") being appended by the necessary HTML code.

I'm able to retrieve the val of #content ("article.php") inside my iFrame ("insert_media.php") via

1. $("#form_content_content", window.parent.document).val();

but i can't manage to have access to it into the other direction.

I hope you can help me with my problem, I'm very new to jQuery :)

Many thanks in advance,
Chris