Hi,

We only need to set or remove a class name, set appropriate CSS-rules for the default template and remove the JS-setted foo.style.display orders.

Yes that's right.

Are there further places with similar behaviours?

I suppose so.

I saw the all spinner graphics beside the submit buttons, where visibility:hidden; will be toggled. But I didn't found the corresponding JS-code.

I belive, it is located at posting.js

Are you aware of additional places?

No, I'm sorry. We have to check every modification.

Is it possible to add theme-dependent JS-code without interaction with the main.js?

You can add another JavaScript file. To avoid conflicts, choose unique class-names.

/Micha