Here is what I am looking to do: 
  
  
  
I want to have a series of gauges, let's say five, and when I change the gauges they change the forecasted values in a line chart.  This is very similar to the drag-able line charts except I want the user to change the gauge instead of directly manipulating the chart.   
  
  
  
Does anyone have any ideas? 
  
  
  
Jeff