function do_clickable($text)
{
    $text = ' '.$text;

    $text = preg_replace('#(?<=[\s\]\)])(<)?(\[)?(\()?([\'"]?)(https?|ftp|news){1}://([\w\-]+\.([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^\s\[]*[^\s.,?!\[;:-]?)?)\4(?(3)(\)))(?(2)(\]))(?(1)(>))(?![^\s]*\[/(?:url|img)\])#ie', 'stripslashes(\'$1$2$3$4\').handle_url_tag(\'$5://$6\', \'$5://$6\', true).stripslashes(\'$4$10$11$12\')', $text);
    $text = preg_replace('#(?<=[\s\]\)])(<)?(\[)?(\()?([\'"]?)(www|ftp)\.(([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^\s\[]*[^\s.,?!\[;:-])?)\4(?(3)(\)))(?(2)(\]))(?(1)(>))(?![^\s]*\[/(?:url|img)\])#ie', 'stripslashes(\'$1$2$3$4\').handle_url_tag(\'$5.$6\', \'$5.$6\', true).stripslashes(\'$4$10$11$12\')', $text);

    return substr($text, 1);
}