Then this is what you need:
"http($this->addslashes("http://www.worldrule.com/forums/attachment.php?s=a92ab461ee2901e4e582aba2a2f895af&postid=34783")) . "\" border=\"0\" alt=\"[user image]\" />"
Refuse to do what you don't want to do.
"http("http://www.bastarddomain.com/dev/ico/quote.php") . "\" target=\"_blank\">"http($this->addslashes("http://www.bastarddomain.com/dev/ico/signature.php?show")) . "\" border=\"0\" alt=\"[user image]\" />""