Populate three drop-down lists with javascript/php

I have three select lists that I want to auto-populate with values based on user selection. So let’s say I have select A, B, and C. If user selects A.x from the drop down then B is automatically updated and so is C based on whatever B.x is. Each item in the selects has a value that I’m using to calculate a price total, so it is very important that each drop down is updated accordingly.

I tried implementing this solution: [url]http://remysharp.com/2007/01/20/auto…g-jquery-ajax/[/url] but doesn’t help me since it’s only for two drop-downs (the other solution on that site I cannot implement since I don’t have access to mysql, only to PHP).

Does anyone have any suggestions on how to do this in JavaScript and maybe PHP (no db back-end) … ???

Any help would be GREATLY appreciated.

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