$zusatz =~ s!(http://.*?)\s_(.*?)_!<table width=\"100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">
<tr><td width=\"33\" class=\"text\"><img src=\"graphics\/pdf_icon.gif\" width=\"30\" height=\"30\">
<\/td><td class=\"text\" valign=\"top\">$2<br>
<a href=\"$1\" class=\"userlink\" target=\"_blank\">Datei im pdf-Format<\/a><\/td><\/tr><\/table>!g;