anchor.diff:  <link rel="apple-touch-icon" sizes="114x114" href="/apple-touch-icon-76x76.png" />
   <link rel="apple-touch-icon" sizes="144x144" href="/apple-touch-icon-152x152.png" />
   
  +// Stop links opening Safari
   <script type="text/javascript">
     window.onload = function() {
       if (("standalone" in window.navigator) && window.navigator.standalone) {
  
positive.code: <meta name="apple-mobile-web-app-capable" content="yes">
  <meta name="apple-mobile-web-app-status-bar-style" content="black">
  <meta name="apple-mobile-web-app-title" content="The Tangent">
  
  <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
  <link rel="apple-touch-icon" sizes="57x57" href="/apple-touch-icon-57x57.png" />
  <link rel="apple-touch-icon" sizes="72x72" href="/apple-touch-icon-72x72.png" />
  
negative.code:   }
  </script>
  
  // Prompt user to add to home screen
  <link rel="stylesheet" href="/stylesheets/add2home.css">
  <script type="application/javascript" src="/javascripts/add2home.js"></script>
  