Update:
I found somewhere in these forums that you should be able to toggle off scrolling by using {scrolling:no}, so I’ve added that to my code.
<a class="fancybox-iframe{scrolling:no,width:100,height:100}" href="https://www.brycerafflesound.com/contactform/"><img alt="" src="https://brycerafflesound.com/images/Contact-b.png" width="40" height="140" /></a>
And now my contact form opens up as a new page rather than as a fancybox. Where did I go wrong?
Also, I’m using easy fancybox version 1.3.4.9