Hi Luc,
Ive just had a quick play around with trying to get the editor to work in index2.php but its a little beyond me at the moment.
I think the next easiest way to work it is to setup another
template (either of scroller or another template that has enough height) and change the template manually in the url. That will mean that no one will stumble across the template by accident and will only be availble to you as you will know what it is.
So when you are wanting to edit just place the following after the url:
?jos_change_template=jb_scroller
where jb_scroller equals the name of your template.
This is probably the easiest fix I think.
Cheers Anthony