     # # TODO: broken (a major pain in my ass)
     # step = 1.5
     # zoom = setInterval (=>
-      
+
     #   # gradually expand zooming bounds
     #   cMin -= step
     #   if cMin < @smallestX then cMin = @smallestX
     #   cMax += step
     #   if cMax > @largestX then cMax = @largestX
-      
+
     #   # console.log "[cMin,cMax] = [#{cMin},#{cMax}]"
     #   @plotPoints(cMin,cMax)
 


    # update slider position
    classifier.el.find('#ui-slider').val(@graphCenter-@zoomRanges[@zoomLevel]/2)
    
    @plotPoints(@smallestX, @largestX)

    [cMin, cMax] = [@xMin, @xMax]

      # draw triangle
      w = 10
      s = 2*w*Math.tan(@leftPadding)

      @ctx.beginPath()
      @ctx.moveTo(w,yClick)
      @ctx.lineTo(0,yClick+s)
      @ctx.lineTo(0,yClick-s)
      @ctx.fillStyle = '#FC4542'
      @ctx.fill()

      @ctx.beginPath()
