title: How could this jQuery slider be optimised ? (Slow, laggy)
body: <p>I have written a Javascript/jQuery script. Its purpose is to serve as a responsive background image slider. </p>
  
  <p>It is viewable here:
  <a href="http://new.upserver.co.uk/rbis/" rel="nofollow">http://new.upserver.co.uk/rbis/</a></p>
  
  <p>My question is this;</p>
  
  <p>While the code functions correctly, it can be slow/laggy. Especially when additional animation related plugins appear on the same page (i.e. nivoslider). </p>
  
  <p>I have seen many similar sliders that handle chunky images perform effortlessly and am concerned and wondering how this code could be optimised to perform better? the javascript in question is located in file <a href="http://new.upserver.co.uk/rbis/rbis.js" rel="nofollow">http://new.upserver.co.uk/rbis/rbis.js</a></p>
  
  <p>Many thanks for all suggestions.
  Regards</p>