prova così

codice:
<a href="pagina.html">
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/ cabs/flash/swflash.cab#version=6,0,29,0" width="100" height="100">
<param name="movie" value="bottone.swf"><param name="quality" value="high">
<embed src="bottone.swf" type="application/x-shockwave-flash" width="100" height="100">
</embed>
</object>
</a>