Child Sub-Categories

Hope someone can help with a simple code implant. I am using the category creator and have had a good time with it. The categories only show on mouseover which is what I want, the problem is the sub or child is not hidden. EX: Cooking (main) Tips, Course, Sweets, Salads (sub) cake, cookies, candies (child) even those these are connected to the parent of ‘sweets’ they show under the main ‘cooking’. I’m usually good with code but cannot even find where the ‘Categories’ code is to adjust. the site is http://cleanme.us can anyone help?