This Javascript is a little over my head and I would really appreciate some help

This is for Adobe Acrobat pro x, I am creating a form. I need the javascript to control this function. If I need to change to radio buttons that is also fine

If "yes" check box is checked then "no" checkbox unchecks and a text field appears called "comments" and an image called "comments image1" goes from 0% opacity to 100% opacity.

If the "no" check box is checked then the "yes" checkbox unchecks and the text field disappears and the image changes to 0% opacity.

Thanks in advance.