title: can't get twitter bootstrap navbar to work?
body: <p>I've looked through a bunch of tutorials, and I've read a bunch of answers to questions on here. I can't figure out what's going on. I am linking to bootstrap.css, bootstrap-responsive.css, bootstrap.js, jquery, and bootstrap-dropdown.js, in that order. When I click on each from the page source, it shows up correctly. When I click the dropdown, however, nothing happens. Here's the html code for that:</p>
  
  <pre><code>&lt;!--begin bootstrap navbar--&gt;
  &lt;div class="navbar navbar-fixed-top"&gt;
      &lt;div class="navbar-inner"&gt;
          &lt;div class="container"&gt;
              &lt;ul class="nav"&gt;
                  &lt;li&gt;&lt;a href="/signup/index"&gt;Sign Up&lt;/a&gt;&lt;/li&gt;
                  &lt;li class="dropdown"&gt;
                      &lt;a href="/signup/index" class="dropdown-toggle" data-toggle="dropdown"&gt;Login&lt;b class="caret"&gt;&lt;/b&gt;&lt;/a&gt;
                      &lt;ul class="dropdown-menu"&gt;
                           &lt;li&gt;&lt;a href="/mypage"&gt;my page&lt;/a&gt;&lt;/li&gt;
                      &lt;/ul&gt;
                  &lt;/li&gt;
              &lt;/ul&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  &lt;!--/end bootstrap navbar--&gt;
  </code></pre>
  
  <p>If anyone has any ideas, let me know.</p>