title: jQuery Change Background image gradually by scrolling
body: <p>I'm not pretty good in java. Still I guess that question is not too easy for pros as well.</p>
  
  <p>As the header says I'm trying to find a solution how to change a background image gradually by scroll with jQuery.</p>
  
  <p>The background should be responsive.</p>
  
  <p>I found a website having a similar thing <a href="http://sojournnetwork.com/" rel="nofollow">sojournnetwork.com</a></p>
  
  <p>Since I'm no pro with java and jquery a jsfiddle example would be nice!</p>
  
  <p>Thanks in advance</p>