quick Q - dynamic forms

[kintantee]

I've seen code on websites (shopping, etc...) where you chose one option in a form, and that selection dictates what you do next...

for example, one drop-down box prompts you to choose windows or linux, and when you do, the next drop-down box on the page is then populated with 95,98,2000,XP,etc... (if you selected windows)

Is it possible to use php to do this without reloading the page? If not, what language must be used to do this without reloading the page?

I don't expect a long answer, I'm just curious how this is possible. Does anyone know of any tutorials that can teach me to do this? Oh, and is there a term used to describe this process?

Thanks... - Jesse

[barand]

To do without reloading page you use javascript with arrays of values for the dropdowns

hth