title: Parallax Split screen with alternating scroll sides
body: <p>I am looking to create a simple parallax split screen site that allows me to once a new screen is loaded alternate the scrolling. For example, If I scroll down and the content on the left and right appear I want to then lock the right side and have scrolling only happen on the left until that content is finished.</p>
  
  <p>So it should start like this:</p>
  
  <p><a href="http://alvarotrigo.com/blog/multiscroll-js-jquery-plugin-to-create-multi-scrolling-sites-with-two-vertical-layouts/" rel="nofollow">http://alvarotrigo.com/blog/multiscroll-js-jquery-plugin-to-create-multi-scrolling-sites-with-two-vertical-layouts/</a></p>
  
  <p>but once the section loads in I need just the left scrollable like this:</p>
  
  <p><a href="http://www.themealings.com.au/leesa/portfolio/nick-jr-parents-blog/" rel="nofollow">http://www.themealings.com.au/leesa/portfolio/nick-jr-parents-blog/</a></p>
  
  <p>Once the left side content is complete I want to present a new section.  Any ideas on how this can happen? What is the best JS library to achieve this?</p>