tekst ændring

Jeg bruger i forvejen nedenstående tag funktion til at den tekst der vises:

<?
function string_tagster($str) {
        $str = " ".$str." ";
        $str = eregi_replace("([[:space:]{()\"'\[~#=;\&?\_-])((ftp|http|https|telnet|news|nttp|nntp|file):\/\/[a-z0-9~#%@æøå\&\(\):;=\?\/\.,_-]+(\\[|\\]|[a-z0-9~#%@æøå\&:;,=\?\/_\+-])+)", "\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $str);
        $str = eregi_replace("([[:space:]{()\"'\[~#=;\&?\_-])(www\.[a-z0-9~#%@æøå\&\(\):;=\?\/\.,_-]+(\\[|\\]|[a-z0-9~#%@æøå\&:;,=\?\/_\+-])+)", "\\1<a href=\"http://\\2\" target=\"_blank\">\\2</a>", $str);
        $str = eregi_replace("([[:space:]{()\"'\[~#=;\&?\_-])([_\.0-9a-z-]+@([_\.0-9a-z-]+)+\.[a-z]{2,4})","\\1<a href=\"mailto:\\2\">\\2</a>", $str);
        return substr($str, 1);
    }

    function format_post2 ($str) {
        $str = stripslashes($str);
        $str = string_tagster($str);
        $str = str_replace("  ", "&nbsp; ", $str);
        $str = str_replace("\t", "&nbsp;&nbsp;&nbsp;&nbsp;", $str);
        $str = str_replace("\r", "", $str);
        $str = str_replace("\n", "<br>", $str);
       
        return $str;
    }
?>

se http://www.eksperten.dk/spm/428627