anchor.diff:        var data = JSON.parse(message.data)
         console.log(data)
         document.getElementById("log").innerHTML += data["html"]
  +
  +      var mainView = document.getElementById("main")
  +      mainView.scrollTo(0, mainView.scrollHeight)
       }
       ws.onopen = function(something) {
         console.log("Open")
  
positive.code: </script>
  
  <style type="text/css">
    .success {
      color: green;
    }
    .error {
      color: red;
    }
  </style>
  
negative.code: <div class="mdl-layout mdl-js-layout mdl-layout--fixed-drawer">
    <header class="mdl-layout__header">
      <div class="mdl-layout__header-row">
        <span class="mdl-layout__title"><%= title %></span>
      </div>
    </header>
  
    <%= erb :"../../partials/navigation" %>
  
    <main class="mdl-layout__content" style="padding: 40px" id="main">
  
  
  <h1>Build Log <%= build.number %></h1>
  
  <code id="log">
  