code: function(html) {
          var C = YAHOO.widget.CalendarNavigator.CLASSES;
          var h = html;
  
          h[h.length] = '<span class="' + C.BUTTON + ' ' + C.DEFAULT + '">';
          h[h.length] = '<button type="button" id="' + this.id + '_submit' + '">';
          h[h.length] = this.__getCfg("submit", true);
          h[h.length] = '</button>';
          h[h.length] = '</span>';
          h[h.length] = '<span class="' + C.BUTTON +'">';
          h[h.length] = '<button type="button" id="' + this.id + '_cancel' + '">';
          h[h.length] = this.__getCfg("cancel", true);
          h[h.length] = '</button>';
          h[h.length] = '</span>';
  
          return h;
      }
docs: Renders the submit/cancel buttons for the navigator
  
  @method renderButton
  @return {String} The HTML created for the Button UI