content: function ShowSpinner(x = 0 as float, y = 0 as float) as Object
      spinner = CreateObject("roSGNode", "BusySpinner")
      spinner.clockwise = true
      spinner.spinInterval = 1
      spinner.poster.width = 100
      spinner.poster.height = 100
      spinner.poster.uri = "pkg:/images/spinner.png"
      
      if x = 0 and y = 0
          x = 590 '(1280 - 100) / 2
          y = 310 '(720 - 100) / 2
      end if
      
      spinner.translation = [x, y]
      spinner.visible = true
      spinner.control = "start"
      
      m.top.appendChild(spinner)
      
      return spinner
  end function
  
  function HideSpinner(spinner as Object)
      m.top.removeChild(spinner)
      spinner = invalid
  end function