gistfile1.html

      <div id="into_the_lab">
        <div class="arrow"></div>
        <p><%= link_to "Go into the lab", "http://ec2-50-17-36-93.compute-1.amazonaws.com", :target => "_blank" %></p>
      </div>
      
      <script>
      // Make the whole div clickable
      $("#into_the_lab").click(function(){
           window.location=$(this).find("a").attr("href");
           return false;
      });
      </script>