i have 2 pull down list/menu
First one has 3 options a) pig b) dog c) cat
Second has a) car b) bus c) train
how can i make sure that if i select c) cat, that only a) car is available? and that i cannot select b) and c)
current my setting is like this…PayPal <?php /*?> pig <?php */?> dog <?php /*?> cat <?php */?>
any help would be great.