Zoom feature doesn't work in my embedded flash content with Javascript

My zoom and out feature is not working at all even though everything else shows ... When I zoom in, the zoom feature doesn't do anything , even zooming out. can anyone tell me if I am missing a parameter .. I never worked with Flash before . Your suggestion would be appreciated...

<title><?= $pagetitle; ?></title>
<script type="text/javascript" src="V/js/swfobject.js"></script>
<script type="text/javascript">
var oid = "<?= $tree_owner_id; ?>";
var redirectURL = "<?= $redirect; ?>";
var contactInfo = "<?= $contact_info; ?>";
var bottomLeftLogo = "<?= $bottom_logo; ?>";
var session_id = "<?= $session_id; ?>";
var iid = "<?= $_GET['iid']; ?>";


    var flashvars = {};
    flashvars.redirectURL = redirectURL;
    flashvars.contactInfo = contactInfo;
    flashvars.bottomLeftLogo = bottomLeftLogo;
    flashvars.session_id = session_id;
    flashvars.iid = iid;
    flashvars.oid = oid;

    var params = {};
    params.quality = "best";
    params.bgcolor = "#869ca7";
    params.allowfullscreen = "true";
    params.allowscriptaccess = "sameDomain";
    params.allownetworking = "all";
    var attributes = {};
    attributes.id = "familytree";
    attributes.align = "middle";
    swfobject.embedSWF("familytree.swf", "myAlternativeContent", "100%", "100%", "9.0.115", "expressInstall.swf", flashvars, params, attributes);
</script>