        .attr("stroke-width", "none")
 
   ## configuration parameters
-
   chart.width = (value) ->
     if !arguments.length
       return width

                    return darkrect if i % 2
                    lightrect)
                 .attr("stroke", "none")
      xaxis = g.append("g").attr("class", "x axis")
      xaxis.selectAll("empty")
           .data(data.chrnames)

                    .attr("r", pointsize)
                    .attr("fill", pointcolor)
                    .attr("pointer-events", "hidden")
      # these hidden points are what gets selected...a bit larger
      hiddenpoints = g.append("g").attr("id", "markerpoints_hidden")
      markerSelect =
        hiddenpoints.selectAll("empty")
