I have a task to create sub menu( it may also be change ) from some main menu in my page. I dont know how to design the table for it, i have tried to created a table named 'categories' and have a field 'isSub' (to know it's a sub menu) from many menu in it. and from sub menus it will link another page in my web system (detail content). I have searched by google and found the link : http://www.milonic.com/ have menu - sub look like my ideas. Can someone help me ? Thanks for any response.