anchor.diff:                                      Certificate",
                                       lti_building_lti_tool_path(anchor: 'ssl')
                                       %> </li>
  -                                </ul>
  -                            </li>
  -                            <li class=" dropdown">
  -                                <a href="#" class="dropdown-toggle "
  -                                data-toggle="dropdown" role="button"
  -                                aria-haspopup="true"
  -                                aria-expanded="false">Users<span
  -                                class="caret"></span></a>
  -                                <ul class="dropdown-menu">
  -                                  <li> <%= link_to "Add OpenDSA to Canvas",
  -                                  lti_instructions_opendsa_path
  -                                  %></li>
  -                                  <li>
  -                                    <%= link_to "Add OpenDSA Book to Canvas",
  -                                  lti_instructions_opendsa_book_instance_path
  -                                  %></li>
  -                                  <li> <%= link_to "Add OpenDSA to Moodle",
  -                                  lti_instructions_opendsa_moodle_path
  -                                  %></li>
  -                                </ul>
  -                            </li>
  -                            <li class=" dropdown">
  -                                <a href="#" class="dropdown-toggle "
  -                                data-toggle="dropdown" role="button"
  -                                aria-haspopup="true"
  -                                aria-expanded="false">Examples<span
  -                                class="caret"></span></a>
  -                                <ul class="dropdown-menu">
                                       <li> <%= link_to "OpenDSA - an LTI Use
                                       Case",  lti_opendsa_path %></li>
                                       <li> <%= link_to "LTI in OpenDSA -
  
positive.code:                                 <a href="#" class="dropdown-toggle "
                                  data-toggle="dropdown" role="button"
                                  aria-haspopup="true"
                                  aria-expanded="false">Developers<span
                                  class="caret"></span></a>
                                  <ul class="dropdown-menu">
                                      <li> <%= link_to "Building an LTI Tool
  
negative.code:                     <div id="navbar" class="navbar-collapse collapse">
                          <ul class="nav navbar-nav">
                              <li><a href="http://cssplice.org" target="_blank"
                                 style="text-align:center">SPLICE<br>Home</a></li>
                              <li class=" dropdown">
                                  <a href="#" class="dropdown-toggle "
                                  data-toggle="dropdown" role="button"
                                  aria-haspopup="true" aria-expanded="false"
                                  style="text-align:center">LTI <br>Background
                                  <span class="caret"></span></a>
                                  <ul class="dropdown-menu">
                                      <li> <%= link_to "About",  lti_path %></li>
  