anchor.diff:          if (vistype=="tree") {
               $("#tree").addClass("active")
           }
  -        else if (vistype=="nodelink") $("#nodelink").addClass("active")  
  +        else if (vistype=="queue") {
  +            $("#queue").addClass("active")
  +        }
  +        else $("#nodelink").addClass("active")  
       script.
           var owner = "#{owner}"
           if (owner==="false") {
  
positive.code:     - else if (vistype == "tree")
          link(rel='stylesheet', href='/css/vis/tree.css')
          script(src = '/js/bst/lib/bst.js')
      - else  
          script.
              var error = !{JSON.stringify(data)}
  
negative.code:                             a(onclick="setvis('nodelink')") Node-link diagram
                          li#tree 
                              a(onclick="setvis('tree')") Tree 
                          li#queue
                              a(onclick="setvis('queue')") Queue
                      span upload thumbnail
                      
          -}
  