Place your map viewer into a popup window. EP says it doesn't support the map viewer unlike previous versions when mine were working. Just make sure the popup window doesn't appear over control buttons because that will disable them.
Mate, I just use a control button to open/close the popup window. My popups work the same in html5 as in flash. The only buttons that don't work in this tour is full screen and email which I will be removing. www.gmimaging.com.au/knoxsenior/gmimaging_KnoxSenior.html