The problem appears to be interference from the other diagram on the page that is in a comment, as my buttons are working fine in the diagram in the comment when viewed by itself, and they are working fine on the iPad, and after getting them to work, they stop working if I click on a button for the other diagram.
The problem appears to be interference from the other diagram on the page that is in a comment, as my buttons are working fine in the diagram in the comment when viewed by itself, and they are working fine on the iPad, and after getting them to work, they stop working if I click on a button for the other diagram.