Here's a simplified version of the process in question:
There is a form presented to the user which shows two input fields ("field1" and "field2"), and a "submit" button.
The user selects an item from the "field1" drop-down list. The items available from the "field2" drop-down list will depend on what was selected in "field1"(i.e., BEFORE THE "SUBMIT" BUTTON IS CLICKED, the items presented in the "field2" drop-down list will be different dependin on what was selected in "field1"). The user selects an item from "field2".
Then the user clicks on the "submit" button to obtain the results.
Is it possible to write PHP code for this, or is this only possible using something like javascript?
Thanks in advance :-)