DedeCms 5.7后台怎么去除版权及去除广告

<?php exit; } else if ($dopost==&#39;showauth&#39;) { include(&#39;templets/index_body_showauth.htm&#39;); exit; } else if ($dopost==&#39;showad&#39;) { include(&#39;templets/index_body_showad.htm&#39;); exit; } ?>