update select elements

[jazzman]

Hi all!

I have a mysql table containing a list of grades and classes of a school. Now, I have a form with which one can add a student to a different table with his grade and class being determined according to the grades-classes table. I created two select lists: one for the grade and another for the class. I want that once the user has selected the grade from the first selection list he will be given the appropriate classes in the second selection list according to the mysql table.

Can someone please give me a clue how to do this?

[danrah]

if i have understood your problem, you wanna generate the second select dynamically.

you should use javascript heavily to implement ajax  on client side.

[Barand]

You can do it entirely with javascript (see baaSelect link in my sig) or if you need more flexibility, use ajax. Again there's a link in my sig.