Re: Is Ajax in messages/index.php connected with the table?
Unfortunately this
checkboxes = j("#inboxcheck");
kept breaking/never really worked to begin with.
For my custom template I still had to resort to this:
checkboxes = j("ul#message-threads li input[type='checkbox']");
This stuff is fuzzy… 
And now read/unread seems to be the wrong way around and the select dropdown does nothing… :`-(
