$res = Impact_Analysis::insert($iss_id);
$tpl->assign('add_requirement_result', $res);
} elseif ($cat == 'set_impact_requirement') {
$res = Impact_Analysis::update($isr_id);
$tpl->assign('set_impact_requirement_result', $res);
} elseif ($cat == 'delete_requirement') {
$res = Impact_Analysis::remove();
$tpl->assign('requirement_delete_result', $res);
} elseif ($cat == 'save_filter') {
$res = Filter::save();
$tpl->assign('save_filter_result', $res);
} elseif ($cat == 'delete_filter') {
$res = Filter::remove();
$tpl->assign('delete_filter_result', $res);
} elseif ($cat == 'remove_support_email') {
$res = Support::removeAssociation();
$tpl->assign('remove_association_result', $res);
} elseif ($cat == 'delete_attachment') {
$res = Attachment::remove($id);
$tpl->assign('remove_attachment_result', $res);
} elseif ($cat == 'delete_file') {
$res = Attachment::removeIndividualFile($id);
$tpl->assign('remove_file_result', $res);
} elseif ($cat == 'remove_checkin') {
$res = SCM::remove($items);
$tpl->assign('remove_checkin_result', $res);
} elseif ($cat == 'unassign') {
$res = Issue::deleteUserAssociation($iss_id, $usr_id);
Workflow::handleAssignmentChange($prj_id, $iss_id, Auth::getUserID(), Issue::getDetails($iss_id), Issue::getAssignedUserIDs($iss_id));
$tpl->assign('unassign_result', $res);
} elseif ($cat == 'remove_email') {
