include image info in in detail.php; ensure populated before DETAIL_STARTED event

lib/exe/detail.php

@@ -2,13 +2,18 @@
 if(!defined('DOKU_INC')) define('DOKU_INC',dirname(__FILE__).'/../../');
 define('DOKU_MEDIADETAIL',1);
 require_once(DOKU_INC.'inc/init.php');
-trigger_event('DETAIL_STARTED', $tmp=array());
-//close session
-session_write_close();
 
 $IMG  = getID('media');
 $ID   = cleanID($INPUT->str('id'));
 
+// this makes some general infos available as well as the info about the
+// "parent" page
+$INFO = array_merge(pageinfo(),mediainfo());
+trigger_event('DETAIL_STARTED', $tmp=array());
+
+//close session
+session_write_close();
+
 if($conf['allowdebug'] && $INPUT->has('debug')){
     print '<pre>';
     foreach(explode(' ','basedir userewrite baseurl useslash') as $x){
@@ -39,10 +44,6 @@ if($AUTH >= AUTH_READ){
     $ERROR = p_locale_xhtml('denied');
 }
 
-// this makes some general infos available as well as the info about the
-// "parent" page
-$INFO = pageinfo();
-
 //start output and load template
 header('Content-Type: text/html; charset=utf-8');
 include(template('detail.php'));