FAndt selv ud af. men sådan her skal koden se ud når man vil have sit flash element til at være "gennemsigtig"
<script language="JavaScript" type="text/javascript">
if (AC_FL_RunContent == 0) {
alert("This page requires AC_RunActiveContent.js.");
} else {
AC_FL_RunContent(
'codebase', '
http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0',
'width', '600',
'height', '224',
'src', 'banner',
'quality', 'high',
'pluginspage', '
http://www.macromedia.com/go/getflashplayer',
'align', 'middle',
'play', 'true',
'loop', 'true',
'scale', 'showall',
'wmode', 'transparent',
'devicefont', 'false',
'id', 'banner',
'bgcolor', '#ffffff',
'name', 'banner',
'menu', 'true',
'allowFullScreen', 'false',
'allowScriptAccess','sameDomain',
'movie', 'banner',
'salign', ''
); //end AC code
}
</script>
<noscript>
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="
http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="600" height="224" id="banner" align="middle">
<param name="allowScriptAccess" value="sameDomain" />
<param name="allowFullScreen" value="false" />
<param name="movie" value="banner.swf" />
<param name="quality" value="high" />
<param name="wmode" value="transparent" />
<param name="bgcolor" value="#ffffff" />
<embed src="banner.swf" quality="high" wmode="transparent" bgcolor="#ffffff" width="600" height="224" name="banner" align="middle" allowscriptaccess="sameDomain" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="
http://www.macromedia.com/go/getflashplayer" /></embed>
</object>
</noscript>