Help.....
i have designed my table
tbl_menu
--------------------------------------------
-menu_id(primary key with auto number)
-menu_name
-date_created
--------------------------------------------
tbl_sub_menu
--------------------------------------------
-sub_id(primary key with auto number)
-menu_id(foreign key)
-sub_name
-date_created
--------------------------------------------
tbl_article
--------------------------------------------
-art_id(primary key with auto number)
-sub_id(foreign key)
-art_title
-art_detail
--------------------------------------------

the problem is
1- i select the tbl_menu to display menu
2- when click on the menu it will list the submenu by key of the main menu (it work perfectly)
3- but when i used the same method to display article it have problem when the page refresh it undefind index of sub_id so how is my designed where the wrong is it? any good way then it?????
please help............