anchor.diff:      <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.7/css/materialize.min.css">
       <script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.7/js/materialize.min.js"></script>
   
  -    <!-- FileTree -->
  -    <script src="jquery.js" type="text/javascript"></script>
  -	<script src="jquery.easing.js" type="text/javascript"></script>
  -	<script src="jqueryFileTree.js" type="text/javascript"></script>
  -	<link href="jqueryFileTree.css" rel="stylesheet" type="text/css" media="screen" />
  -
       <!-- icons -->
       <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  -    
  -    <!-- FileTree Styling -->
  -    <style type="text/css">
  -		H2 {
  -			font-family: Georgia, serif;
  -			font-size: 16px;
  -			font-weight: normal;
  -			margin: 0px 0px 10px 0px;
  -		}
  -		.example {
  -			float: left;
  -			margin: 15px;
  -		}
  -    	.demo {
  -    		width: 300px;
  -    		height: 600px;
  -    		border-top: solid 1px #BBB;
  -    		border-left: solid 1px #BBB;
  -    		border-bottom: solid 1px #FFF;
  -    		border-right: solid 1px #FFF;
  -    		background: #FFF;
  -    		overflow: scroll;
  -    		padding: 5px;
  -    	}
  -    </style>
  -    
  +  
       <!-- vars -->
       <script type="text/javascript">
           var materials = <%= @material_data.to_json.html_safe %>;
  
positive.code:         <button id="save" class="btn-flat"> Save </button>
      </td>
      
      <!--<td id="fileTree">-->
      <!--    <div class="example">-->
      <!--		<h2>Assemblies in this project:</h2>-->
      <!--		<div id="assemblyTree" class="demo"></div>-->
  	   <!-- </div>-->
      <!--</td>-->
  
      </tr>
  </table>
  </body>
  
negative.code:         var SAVE_URL = '/model';
          var curr_assembly = <%= @curr_assembly.to_json.html_safe %>;
      </script>
  
      <% javascript_include_tag "model" %>
      <% stylesheet_link_tag "model", media: "all" %>
  