anchor.diff:              <div class="tab-content">
                 <div id="date_range" class="tab-pane active">
                   <div id="dates_headings" class="row">
  -                  <div class="span3">
  +                  <div class="span4">
                       <p><h4>Start Date</h4></p>
                     </div>
  -                  <div class="span3">
  +                  <div class="span4">
                       <p><h4 class="pull-right">Due Date</h4></p>
                     </div>
                   </div>
                   <div class="row">
  -                  <div class="span6">
  +                  <div class="span8">
                       <div class="progress">
                         <%# TODO: extract to a helper method? %>
                         <% unless reservation_length > 31 %>
  
positive.code:           </div>
          </div>
  
          <div class="span4">
            <%# CHECKED OUT BY %>
            <% if @reservation.checked_out %>
              <div class="well">
  
negative.code: 
        <%# PEOPLE INVOLVED WITH THE RESERVATION %>
        <div id= "people_row" class="row">
          <div class="span3">
            <%# RESERVED BY %>
            <div class="well">
              <header>
  