content: sub ShowDetailScreen(posterGridContent, itemIndex)
      m.DetailScreen = CreateObject("roSGNode", "DetailScreen")
      m.DetailScreen.ObserveField("playButton", "OnPlayButtonSelected")
      m.DetailScreen.itemIndex = itemIndex
      m.DetailScreen.content = posterGridContent
      ShowScreen(m.DetailScreen)
  end sub
  
  
  
  sub OnPlayButtonSelected()
       poster = m.DetailScreen.findNode("posterGrid")
       index = m.DetailScreen.itemIndex
      ShowVideoScreen(poster.content, index)
  end sub