function add($categoryName, $categoryFilter) {
			global $database, $db;
			if (empty($categoryName)) {
				return false;
			}

			$categoryName = $db->escape($categoryName);
		
			$categoryFilter = $db->escape($categoryFilter);

			
			$priority = Category::getNextPriority();
			$result = $db->execute('INSERT INTO '.$database['prefix'].'Categories (name, priority, filter) VALUES ("'.$categoryName.'",'.$priority.',"'.$categoryFilter.'")');
			$id = $db->insertId();
	
				
			Category::inputFilters($id,$categoryFilter);	
	
			Category::rebuildFilters($id,$categoryFilter);	
		
			Category::rebuildCount($id);

			return $result;
		}