You are running a relative old version (1.4.4) of swfobject.js
You could try to use the 2.2 version from Hosted Libraries | Google for Developers
Replace in your script NB/nblive.html the line
<script type="text/javascript" src="swfobject.js"></script>
with
<script src="https://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js"></script>
SORRY, will not work either, version 2.3 is needed according to Adobe.
http://blogs.adobe.com/flashplayer/2015/10/flash-player-guidance-for-internet-explorer-11-and-microsoft-edge.html#sthash.QXbtXUY2.JwlTeLUW.dpbs
So you have to remove swfobject and use the plain FLASH commands.
It is much easier to debug for us outsiders, if you give, next time, a real link to a problem-page, not a page with the problem hidden in an iFrame. This is the real link this time : http://monadh.com/NB/nblive.html
Wim