What do you mean by that exactly. As I said I am very new to this (started using Javascript last week) and haven't even grasped using online scripts unless they have HTML to go with it.

Venturini

I am trying to put together a web page where the customer makes choices of products and is then given a total. I am extremely new to Javascript and have managed to get as far as I have from web searches for scripts and html and adapted them.

I need to know the principles of how to disable certain options based on other selections within the form. I have attached my script and html below to help.

For example of a customer...