Add Infinite Scroll Functionality To Website

Hello, I have a website that I am working on and want to add infinite scroll to it. I am going to have a lot of content on this site and need a solid implementation of infinite scroll. It isn't a blog so plugins won't be enough and it won't be just copy to scroll through, it will be a bunch of iframe objects. That shouldn't matter but just trying to give as much information as possible. Should be a quick and easy job, I just want someone more experienced than myself to do it. Thank you.