       # Prevent latency mess:
       return unless @lastRequestId == currentRequestId
 
-      @lightChartsContainer.setLoading("Processing...")
-      @mainChartContainer.setLoading("Processing...")
+      @lightChartsContainer.setLoading({msg: "Processing...", msgCls: "load-mask-no-image"})
+      @mainChartContainer.setLoading({msg: "Processing...", msgCls: "load-mask-no-image"})
 
 
       # Enable buttons:

    sum = 0
    count = 0

    data = @data[@currentRetName]
    firstKey = data[@keys[0]]

    # I'm assuming all keys have the same x values

    else
      @addChart
        topKeys: @keys
        data: @data[@retention]

  addChart: (cfg) ->
    common = {
      flex: 1
      title: ("#{key};#{@retention}" for key in @keys).join("<br />")
      listeners:
        closed: =>
          Muleview.event "legendChange", false
