Extension:MsCatSelect

Download instructions
Please cut and paste the code found below and place it in. Note: $IP stands for the root directory of your MediaWiki installation, the same directory that holds LocalSettings.php.

Installation
To install this extension, add the following to LocalSettings.php:

$wgWarnNoCat
Defines if you want to get warned if there is no category defined for this page.

$wgMainCategories
Is an array filled with categories which should be loaded in the first dropdown. If this array is nonexistend all main categories (categories which are not a subcategory) of the wiki are loaded automaticaly.