Add Image or Link to CBSub field at registration

I want to be able to add an image link or picture popup next to a field during registration.

For example, a user would click a url link next to a CB field which would popup an image or open a new page with a seating chart.

Please see the example field attached.

The CB field is only visual for certain Sub plans. I thought the CB Conditional plugin would help but is apparently not compatible with CBSubs.

CB 1.7
CBSubs 1.2.2
Joomla 1.5.22

Only way to add custom HTML to registration is to develop a plugin to do it for you or user a Delimiter field and supply whatever HTML you want there. With a delimiter field you could display an image on registration linking to whatever you like.