Creating Dynamic select boxes

Can we create dynamic select boxes which will change when the user selection changes. How many levels we can go about.

For example

we have one combo box named states--> depending upon the states selected the corresponding districts should be shown in the other combo box, and when the user selects a district it should show the corresponding villages or towns and further..

Can we do it without ajax concept. if yes how?

If we have to use ajax one level is easy how to go about two or three levels.

Thanks in advance.

[557 byte] By [Anil_kumara] at [2007-11-27 9:50:54]