Child movie loaded!
// loader.getProgress()
undefined

// loader.getProgress(obj)
undefined

// loader.getProgress("clip")
{ bytesLoaded: 68, bytesTotal: 68 }

// loader.getProgress("doesNotExist")
{ bytesLoaded: undefined, bytesTotal: undefined }

// loader.getProgress(0)
{ bytesLoaded: 502, bytesTotal: 502 }

// loader.getProgress(0.9)
{ bytesLoaded: 502, bytesTotal: 502 }

// loader.getProgress(1)
{ bytesLoaded: undefined, bytesTotal: undefined }

// loader.getProgress(clip)
{ bytesLoaded: 68, bytesTotal: 68 }

// loader.getProgress({})
undefined

// loader.getProgress(null)
undefined

