Add onclick handler to Show-links

program/steps/mail/func.inc

@@ -1222,7 +1222,7 @@ function rcmail_message_body($attrib)
             html::span('image-filename', Q($attach_prop->filename)) .
             html::span('image-filesize', Q($RCMAIL->show_bytes($attach_prop->size))) .
             html::span('attachment-links',
-              (in_array($attach_prop->mimetype, $client_mimetypes) ? html::a($show_link['href'], rcube_label('showattachment')) . ' ' : '') .
+              (in_array($attach_prop->mimetype, $client_mimetypes) ? html::a($show_link, rcube_label('showattachment')) . ' ' : '') .
               html::a($show_link['href'] . '&_download=1', rcube_label('download'))
             ) .
             html::br(array('style' => 'clear:both'))