function ChangeTextPrev($proj_id, $check)
{
    session_start();
    $objResponse = new xajaxResponse();
    $portf = new portfolio();
    $descr = $portf->GetField($proj_id, 'descr');
    if (!$portf->ChangeTextPrev($_SESSION['uid'], intval($proj_id), intval($check))) {
        $script = "document.getElementById('prev" . $proj_id . "').disabled = false;";
        if ($check != 0) {
            $text = '<div align="left" style="width:200px;vertical-align:top;"><div style="text-align:left;vertical-align:top;">' . trim(viewdescr($user->login, reformat($descr, 32, 0, 1))) . '</div></div>';
        }
        $objResponse->assign('previmg' . intval($proj_id), 'innerHTML', $text);
    } else {
        $script = "document.getElementById('prev" . $proj_id . "').disabled = false;";
    }
    $objResponse->script($script);
    return $objResponse;
}