This example works in my child theme functions.php to insert a 2nd wrapper div around the #header div. It just seems chunky (in the functions.php, the html output is good :) and I am hopping someone might have an idea how to simplify this with the same effect.
// Starts the second wrapper div outside the header
function start_wrapper_header_2() { ?>
<div id="wrapper_header_2">
<?php
}
add_action('thematic_aboveheader', 'start_wrapper_header_2');
// Ends the second wrapper div outside the header
function end_wrapper_header_2() { ?>
</div>
<?php
}
add_action('thematic_belowheader', 'end_wrapper_header_2');
As well as the header I will be adding extra wrapper div's to "thematic_abovecontainer" "thematic_belowcontainer" and "_abovemainasides" "_belowmainasides" and possibly the footer area as well.