Dynamic drop down menus

[kimbsan]

Hi,
I request for help, i am building a DHTML for an institution specifically the staff-page.the institution has different schools(9) i.e faculties.The way its supposed to work is below:-
When a user places to a specific school (eg. law school), a list of all staffs from that school is displayed in a drop down menu. The same applies to other respective schools.I need the solution in PHP.

My configuration is
windows xp
wamp5
phpMySQL

Thanks in advance

[Jaan]

Um.. PHP will change it but you still have to reload browser and create a cookie or some kind of session of your selection.