anchor.diff:  </head>
   <body>
   
  +<div id='desc'></div>
   <div class='svgholder'>
   <%= File.read('floor.svg') %>
   </div>
  
positive.code: 
  $(function(){
  
  
  $('.svgholder').on('click touchstart', '.room', function(e) {
    $('.selected').each(function() { removeSVGClass($(this), 'selected') })
    addSVGClass($(this), 'selected')
    history.pushState({},'', "#" + this.id)
  
  })
  
    $(window.location.hash).each(function() { addSVGClass($(this), 'selected') })
  
  
  
  
negative.code:     fill-opacity: 0.5;
    }
  
    #desc {
      font-family: monospace;
      white-space: pre;
      position: absolute;
      left: 575px;
      top: 346px;
    }
  
  </style>
  
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
  