anchor.diff:    <!--<div class="panel-footer"> XXX of Asteroids selected. </div>-->
     <!-- <div class="panel-footer"><aside id="totals"><span id="active">-</span> of <span id="total">-</span> asteroids selected.</aside></div>-->
     
  +<br/>
  +            <div id="axis_choice" class="dropdown">
  +              <button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown">
  +                Switch X-Axis...&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="caret"></span>
  +              </button>
  +              <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
  +                <li role="presentation"><a role="menuitem" tabindex="-1" href="javascript:switchAxis(0)">Approaching Date</a></li>
  +                <li role="presentation" class="divider"></li>
  +                <li role="presentation"><a role="menuitem" tabindex="-1" href="javascript:switchAxis(1)">Asteroid Size</a></li>
  +                <li role="presentation" class="divider"></li>
  +                <li role="presentation"><a role="menuitem" tabindex="-1" href="javascript:switchAxis(2)">Orbit Period</a></li>
  +                <li role="presentation" class="divider"></li>
  +                <li role="presentation"><a role="menuitem" tabindex="-1" href="javascript:switchAxis(3)">Delta-V</a></li>
  +              </ul>
  +            </div>
  +<br/>
     <div id="highchart_content" class="highchart" style="height: 480px; min-width: 720px; max-width: 720px; margin: 0 auto"></div>
   
   </div>
  
positive.code:   
    $(function(){
        var asteroid = d3.select(this).selectAll(".asteroid")
            .data(designation.top(20), function(d) { 
  
              var dateStr = d.close_app_date.split(' ');
              var date = Date.UTC(dateStr[0],dateStr[1],dateStr[2]);
  
negative.code:   };
  
    window.danger = function() {
      impact2.filterRange([0.0001, 1.0]);
      renderAll();
    };
  
    var axisFlag = 0;
    window.switchAxis = function(flag) {
      axisFlag = flag;
      highChart.each(render);
    };
  
    window.toggleAsteroidView = function(tableOrHighChart) {
      if( tableOrHighChart == 1 ) {
        $('#table_content').hide();  
        $('#highchart_content').show();
        $('#axis_choice').show();      
      }
      else if( tableOrHighChart == 0 ) {
        $('#table_content').show();  
        $('#highchart_content').hide();
        $('#axis_choice').hide();
      }
  
      // toggleFlag = tableOrHighChart;
  