[rt-users] Corresponding Drop Down Menu

[webber.han]

Hi
My category of product has two levels - main category and sub category.
Sample data show as follow:
Main Category		Sub Category
--------------------       	------------------------
drink				juice
drink				soda pop
drink				water
food				fruit
food				cake
food				candy

I have two drop down menus for main category and sub category.
If main category choices "drink", sub category only can show juice, soda
pop, and water.
Is it possible?
Please help if you can.
Thanks in advance,

Webber Han