I need to output a plot on page, and I\'m considering Highstock or Highcharts to implement this. Highstock interface is more preferable due to navigator pan
Highstock's only type of xAxis is datetime, so using it with numbers is not an option. (Maybe if you make some tricky formatting actions and define a custom tooltip with the same formatting options it might be possible).
Leaves only Highcharts and there is an example called master-detail chart that could meet your requirements.
Hope that helps.