function categoryBrowsingAjaxController() { }
categoryBrowsingAjaxController._path = '/dwr';

categoryBrowsingAjaxController.listAvailableRootCategories = function(callback) {
    DWREngine._execute(categoryBrowsingAjaxController._path, 'categoryBrowsingAjaxController', 'listAvailableRootCategories', false, callback);
}