basta fare i pulsanti e settare lo sfondo trasparente
nel codice html stesso

codice:
<object classid="clsid27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="603" height="51">
              <param name="movie" value="calendario.swf">
              <param name="quality" value="high">
	      <param name="menu" value="false">
   <PARAM NAME=wmode VALUE=transparent>     
              <embed src="calendario.swf" quality="high" bgcolor=#FFFFFF wmode=transparent   
pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="603" height="51">
</embed>
          </object>