a placeholder for an image that is downloading

	as yet unclassified
	altText: defaultExtent: downloadStateIn: initialize setContents setNoImageContents step stepTime url:

	accessing	top
	formatter
	formatter:
	imageMapName
	imageMapName:

	as yet unclassified	top
	altText: set the text to be displayed while downloading
	defaultExtent: set the size to use when the image hasn't yet downloaded
	downloadStateIn: download the image
	initialize
	setContents set up our morphic contents
	setNoImageContents set up our morphic contents in case image download/decoding failed
	step Do some periodic activity. Use startStepping/stopStepping to start and stop getting sent this message. The time between steps is specified by this morph's answer to the stepTime message. The generic version dispatches control to the player, if any. The nasty circumlocation about owner's transformation is necessitated by the flexing problem that the player remains in the properties dictionary both of the flex and the real morph. In the current architecture, only the top renderer's pointer to the player should actually be honored for the purpose of firing.
	stepTime this check doesn't need to be frequent
	url: set the url to download