 
     window.classifier = @
 
+    @recordedClickEvents = [] # array to store all click events
+
     # zoom levels [days]: 2x, 10x, 20x
     @zoomRange = 15
     @zoomRanges = []

        xMaxRelative: mark.dataXMaxRel
        xMinGlobal: mark.dataXMinGlobal
        xMaxGlobal: mark.dataXMaxGlobal
    
    # DEBUG CODE
    console.log JSON.stringify( @classification )

    @course.showPrompt()
    
  onClickTutorial: ->
    clickEvent = { event: 'tutorialClicked', timestamp: (new Date).toUTCString() }
    @recordedClickEvents.push clickEvent
    @launchTutorial()

  launchTutorial: ->
    if $('#graph-container').hasClass 'loading-lightcurve'
      @notify 'Please wait until current lightcurve is loaded.'
      return
