Radio Button activates a selection box in the page
I read one of your article about "Form changes with radio button selection on 12/18/03 in the PHP-How TO Forum". My question is something regarding to that. I have a page where i have to give the user 3 options (like school, major, and gened req) to choose. I want to put 3 radio buttons for them to choose one of these options. Until they choose one option i want the selection box to be visible but not active.
And when they choose the school radio button, i want only the school selection list to be active and others to be visible but not allow the user to click or access it.
Hope i was clear in explaining what i want. I would appreciate if someone can help me out here. Since this is work related, i would appreciate if anyone can help me ASAP.