Translations:Extension:CategoryTree/101/en

To use the CategoryTree in system messages or the sidebar, that is, to use it as part of the user interface instead of page content, you have to set $conf to $val, so that the support scripts are linked on every page (normally, they are only linked "on demand", but that detection does not work for system messages). This works since $rev (July 2008). If you try this without forcing the scripts to be included, you will find that Clicking the ► has no effect, gives a JavaScript error or just sits on loading.