
If you are using the javascript swfobject method for the hosted My Avatar Editor object you can use this code to give your avatar a transparent background:
<script type="text/javascript">
//<![CDATA[
var avatarvalue = "<?= $avatarid ?>";
var avatarURL = "myavatarcharacter.swf?avatar=" + avatarvalue;
swfobject.embedSWF(avatarURL, "avatarSWFContainer", "160", "200", "10.0.0", null, {hosted:"true"},{wmode:"transparent"});
function setFacialFeature(){
var avatarSWF = document.getElementById('avatarSWFContainer');
avatarSWF.draw();
}
//]]>
</script>
The only bit you need to change from the default code is the parameter which is the {wmode:”transparent”} bit