signup form on secure page

So, CC tech support said I would need to use the API, seems like that is overkill..
All I'd like to do is put a signup form on a secure page.  Whether you use the buttons for forms, everything appears to be processed by http://visitor.constantcontact.com/d.jsp.  This unsecure page obviously causes security warnings to be displayed if it is on a secure page...
Can't just change to https, link is bad.
Any ideas on an easy way to have a signup for on a secure page?

RE: signup form on secure page

Unfortunatley the signup box/form that we supply does not have a secure version available. If you would like to create a secure signup form you would need to create a script that processes the information using our API.

Dan H
Support Engineer, Constant Contact