Drop down

[superfb]

Hi I would like to have a drop down, 2 of them where the second one the options changed according to the option selected in the first drop down.

For e.g.
Dropdown 1. Drop down 2
Mike. If chosen Mike 24
Joseph. If chosen Joseph 15

Thanks

 

[superfb]

Hi I would like to have a drop down, 2 of them where the second one the options changed according to the option selected in the first drop down.

For e.g.
Dropdown 1. Drop down 2
Mike. If chosen Mike 24
Joseph. If chosen Joseph 15

Thanks

Also, if i change the dropdown 1 from Joseph can the 2nd dropdown go blank and let me select 15?