prometheus/web/static/js/graph_template.handlebar

        <div id="graph_wrapper{{id}}">
          <div class="grouping_box">
            <form action="/api/query_range" method="GET" class="query_form">
              <div class="head">
                <div class="expr">
                  <input placeholder="Expression" type="text" name="expr" id="expr{{id}}" size="80" value="{{expr}}">
                  <select name="insert_metric">
                      <option value="">- Insert Metric -</option>
                  </select>
                </div>
                <div class="config">
                  <label for="range_input{{id}}">Range:</label>
                  <input type="button" value="-" name="dec_range">
                  <input type="text" name="range_input" id="range_input{{id}}" size="2" value="{{range_input}}"  >
                  <input type="hidden" name="range">
                  <input type="button" value="+" name="inc_range">
      
                  <input type="button" value="&larr;" name="dec_end">
                  <input placeholder="Until" type="text" name="end_input" id="end{{id}}" size="16" value="{{end  }}">
                  <input type="button" value="&rarr;" name="inc_end">
                  <input type="hidden" name="end">
      
                  <input placeholder="Resolution (s)" type="text" name="step_input" id="step_input{{id}}" value  ="{{step_input}}" size="10">
                  <input type="hidden" name="step">
                  <span class="opts">
                    <input type="checkbox" name="stacked" id="stacked{{id}}" {{stacked_checked}}>
                    <label for="stacked{{id}}">Stacked</label>
                    <input type="submit" value="Graph" name="submit">
                  </span>
                </div>
              </div>
              <div class="eval_stats"></div>
            </form>
            <img src="/static/img/ajax-loader.gif" class="spinner" alt="ajax_spinner">
          </div>
          <div class="grouping_box">
            <div class="graph_container">
              <div class="graph"></div>
              <div class="legend"></div>
            </div>
          </div>
        </div>