changing css class when field is enabled

[librarc]

I currently have a list box that when disbaled, has a class='a'from my css. The box is enabled when an item is chosen from a dropdown box within the same form. I would like to change the class of the box (class='b') when it is enabled, and back to class='a' when disabled. Can someone please advise?

[dukelips]

javascript

[librarc]

that I knew... what I would like to know is any insight on the actual javascript coding used to facilitate the change. Thanks

[Fotiman]

dukelips might have been suggesting that you might get better results posting in the JavaScript forum, since this is a JavaScript question and not a CSS question.

[librarc]

Oh ok, thanks... sorry for the mistake