external links target=_blank, internal links target=_top?

[Admin]

Ok, try this.
In functions.php replace this:

  return "<a href=\"$righturl\" target=\"_blank\">".str_replace('\"', '"', $hyperlink)."</a>";

with this:

  return "<a href=\"$righturl\" target=\"".iif(strstr($righturl,"vbulletin.org"),"_top","_blank")."\">".str_replace('\"', '"', $hyperlink)."</a>";

change vbulletin.org to your own site domain (without www).