Try this:
core.php line 867
<div class='codetop'>CODE</div><div class='codemain' style='height:200px;white-space:pre;overflow:auto'>
$multi_cat_link_arr = explode(",", $news_arr[NEW_CAT]);
$multi_cat_arr = explode(",",hesc(catid2name($news_arr[NEW_CAT])));
//Artikel mit Multi Kategorien Links separieren
$i =-1;
foreach($cat as $cat_arr) {
$i++;
$output = str_replace("{multi_cat_link[$i]}", $multi_cat_link_arr[$i], $output);
$output = str_replace("{multi_cat[$i]}", $multi_cat_arr[$i], $output);
}</div>
e.g. header.php
<div class='codetop'>CODE</div><div class='codemain' style='height:200px;white-space:pre;overflow:auto'>
<div class="kategorie_list">
<?php
//NAVIGATION KATEGORIEN
//browserzeile auslesen
$input=$_SERVER['REQUEST_URI'] ;
//Zwischen category - & Zeichen auslesen
preg_match('/category=(.*?)&/', $input, $ausgabe);
$output = explode (",",$ausgabe[1]);
$cats = file("cutenews/cdata/category.db.php");
$ausschuss = array(16,17,18,19,20);
foreach($cats as $cat_line)
{
$cat_line_arr = explode("|", $cat_line);
$fetchcat = $cat_line_arr[1];
//Kategorien ausschliessen
if(!in_array($cat_line_arr[0], $ausschuss)){
//aktive Kategorie stylen
if(in_array($cat_line_arr[0], $output)){
$cat_list =" * $cat_line_arr[1]
";
echo $cat_list;}
else{
$cat_list =" * $cat_line_arr[1]
";
echo $cat_list;
}
}
}
?>
</div>
</div>