swfobject mittig klappt nicht

<script type="text/javascript" src="/files/swfobject.js"></script>
            <script type="text/javascript">
                var anr                             = "<?php echo $anrede; ?>";
                var intmsg                             = "<?php echo $message; ?>";
                var fl1ja                             = "<?php echo $f1j; ?>";
                var fl1nein                         = "<?php echo $f1n; ?>";
                var si1                             = "<?php echo $signa1; ?>";
                var fl2ja                             = "<?php echo $f2j; ?>";
                var fl2jaup                         = "<?php echo $f2jup; ?>";
                var fl2nein                         = "<?php echo $f2n; ?>";
                var callbtn                            = "<?php echo $btn; ?>";
                var fn                                = "<?php echo $flashfn; ?>";
                var sn                                = "<?php echo $flashsn; ?>";

                var flashvars = {};
                flashvars.usrname                    = anr;
                flashvars.txt                         = intmsg;                
                flashvars.fliess1ja                 = fl1ja;                
                flashvars.fliess1nein                 = fl1nein;                
                flashvars.sign1                     = si1;                
                flashvars.fliess2ja                 = fl2ja;    
                flashvars.fliess2jaup                 = fl2jaup;                
                flashvars.fliess2nein                 = fl2nein;
                flashvars.btn1                         = callbtn;
                flashvars.firstname                 = fn;
                flashvars.surname                     = sn;

                var params = {};
                params.play = "true";
                params.loop = "false";
                params.menu = "true";
                params.quality = "best";

                var attributes = {};
        swfobject.embedSWF("/files/jumper_alles_12_sound02.swf", "test", "800", "400", "9.0.0", false, flashvars, params, attributes);
    </script>