тогда лучше при вставке в хтмл надо задавать размеры
вот так
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0"
width="670" height="400" id="f" align="middle">
<param name="allowScriptAccess" value="sameDomain" />
<param name="movie" value="f.swf" />
<param name="loop" value="false" />
<param name="menu" value="false" />
<param name="quality" value="high" />
<param name="bgcolor" value="#540e58" />
<embed src="f.swf" loop="false" menu="false" quality="high" bgcolor="#540e58"
width="670" height="400" name="f" align="middle" allowScriptAccess="sameDomain"
type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />
</object>