Table structure for menus in mySQL

I need advices for a table structure.

I need to create menus dynamically.

There will be more than 3 menus.

Some of menus will have multi-level structures.

What is the best way to strucure the menu tables?

1. All the menus are in one table
2. Each table should have one table
3. Any other??

Please give me your experience or common practices for dynamically generated menus please.

assuming your menu tree is not very large, the so-called adjacency list would be the simplest option

id   
parent_id
title
other fields

for top level menus parent_id = 0

see Managing Hierarchical Data in MySQL for further discussion and other options