plant infusionsoft cookie on page

Hi I need to plant a cookie from an infusionsoft link which I do not control on a webpage that I do control. The cookie is dynamic so there is no way to just get it once. The link works like a standard infusionsoft link in that it delivers the tracking cooking and then redirects to a landing page. I need to make sure visitors to my landing page(which is completely unique to the original) are tracked with the same cookie. My ideas for this were to use an iframe to nest the original landing page until it plants the cookie and then delete the iframe with javascript, but I am open to all ideas.