All mapframes should use snapshot image until the user indicates their desire to interact with the map. For example, a mapframe mouseover or a click/touch could initiate the code/tile download. Also, we might consider opening the map full screen when the image is single-clicked as oppose to click and dragged.
Image snapshot URL:
http://maps.wikimedia.org/img/osm-intl,1,0,0,1000x1000.png?domain=www.mediawiki.org&title=Help:Extension:Kartographer&groups=_925bf4f20f98fdda374476b902f702d080492748