public static function display_pagination($url, $start, $total, $kmess)
    {
        $out[] = '<ul class="pagination">';
        $neighbors = 2;
        if ($start >= $total)
            $start = max(0, $total - (($total % $kmess) == 0 ? $kmess : ($total % $kmess)));
        else
            $start = max(0, (int)$start - ((int)$start % (int)$kmess));
        $base_link = '<li><a href="' . strtr($url, array('%' => '%%')) . 'page=%d' . '">%s</a></li>';
        $out[] = $start == 0 ? '' : sprintf($base_link, $start / $kmess, '&lt;&lt;');
        if ($start > $kmess * $neighbors)
            $out[] = sprintf($base_link, 1, '1');
        /*if ($start > $kmess * ($neighbors + 1))
            $out[] = '<span style="font-weight: bold;">...</span>';*/
        for ($nCont = $neighbors; $nCont >= 1; $nCont--)
            if ($start >= $kmess * $nCont) {
                $tmpStart = $start - $kmess * $nCont;
                $out[] = sprintf($base_link, $tmpStart / $kmess + 1, $tmpStart / $kmess + 1);
            }
        $out[] = '<li class="active"><a href="#">' . ($start / $kmess + 1) . '</a></li>';
        $tmpMaxPages = (int)(($total - 1) / $kmess) * $kmess;
        for ($nCont = 1; $nCont <= $neighbors; $nCont++)
            if ($start + $kmess * $nCont <= $tmpMaxPages) {
                $tmpStart = $start + $kmess * $nCont;
                $out[] = sprintf($base_link, $tmpStart / $kmess + 1, $tmpStart / $kmess + 1);
            }
        /*if ($start + $kmess * ($neighbors + 1) < $tmpMaxPages)
            $out[] = '<span style="font-weight: bold;">...</span>';*/
        if ($start + $kmess * $neighbors < $tmpMaxPages)
            $out[] = sprintf($base_link, $tmpMaxPages / $kmess + 1, $tmpMaxPages / $kmess + 1);
        if ($start + $kmess < $total) {
            $display_page = ($start + $kmess) > $total ? $total : ($start / $kmess + 2);
            $out[] = sprintf($base_link, $display_page, '&gt;&gt;');
        }
        $out[] = '</ul>';
        return implode(' ', $out);
    }