PHP and JavaScript

Following the ChainedSelectors example, i've been able to populate fields popup menu using a table selected from the database. Now i want to populate more than one fields popup menus.This should enable me select more than one field from the same table and pass them as variables to be used in the next script.I've tried to populate different fields from same table but it doesn't work unless i have each field being populated by each table i.e one to one relationsip. Does anyone have any idea on how one can go about populating more than one fields using one table in JavaScript/Php?