# $m->callback( %ARGS, CallbackName => 'Head' );
$head .= $m->scomp( '/Elements/Callback', _CallbackName => 'Head', %ARGS );
-my $etc = qq[ class="\L$style" ];
+my $sbs = RT->Config->Get("UseSideBySideLayout", $session{'CurrentUser'}) ? ' sidebyside' : '';
+my $etc = qq[ class="\L$style$sbs" ];
$etc .= qq[ id="comp-$id"] if $id;
</%INIT>