code: function _checkRight(targetOffset, tooltipLayerStyleLeft, tooltipOffset, windowSize, tooltipLayer) {
      if (targetOffset.left + tooltipLayerStyleLeft + tooltipOffset.width > windowSize.width) {
          // off the right side of the window
          tooltipLayer.style.left = windowSize.width - tooltipOffset.width - targetOffset.left + 'px';
          return false;
      }
      tooltipLayer.style.left = tooltipLayerStyleLeft + 'px';
      return true;
  }
docs: Set tooltip left so it doesn't go off the right side of the window
  
  @return boolean true, if tooltipLayerStyleLeft is ok.  false, otherwise.