Joomla Form (with a difference)

[Scotmk]

Hi

I need to put a form into Joomla for the students to fill in and send to a specified email.

This itself is no problem, I have installed Artforms components and this does the trick. The problem is I want a field with a drop down (which I have) but when a student selects an option from this field and sends the form, the option that has been selected needs to be disabled (hidden/deleted) so that no-one else can select this option.

Does anyone know how to do this?, another component?, another program?, script? anything? at the end of the day, it does not have to be joomla (our website), just would have been nice.

Any ideas would be greatfully received!

Thanks

Scot

[Jona]

javascript will probably do it but it won't be nice!
Something like this: CodeToad - Javascript - Enable and Disable form elements.