codice corretto e cross-browser:

codice:
<object type="application/x-shockwave-flash" data="http://www.simosito.it/games/poligono.swf"  width="400" height="326" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0">
<param name="movie" value="http://www.simosito.it/games/poligono.swf" />
<param name="quality" value="hight" />
</object>