[Scanu]

Ok the question is simple the conditional "if ($show['forumdescription'])" always retur false..
this code works

$replace = '<h2 class="forumtitle"><div id="scanu"><a ';
$replace .= 'title="<scanu>\' . $forum[\'description\'] . \'</scanu>" ';
$replace .= 'href="\' . vB_Template_Runtime::linkBuild("forum", $forum) . \'">\' . $forum[\'title\'] . \'</a></div></h2>';

And this doen't work

$replace = '<h2 class="forumtitle"><div id="scanu"><a ';
if ($show['forumdescription']) {
$replace .= 'title="<scanu>\' . $forum[\'description\'] . \'</scanu>" ';
}
$replace .= 'href="\' . vB_Template_Runtime::linkBuild("forum", $forum) . \'">\' . $forum[\'title\'] . \'</a></div></h2>';