FlashObject is not defined Error from Firebug

[artexstudio]

FlashObject is not defined
[Break on this error] var fo2 = new FlashObject("...ewer", "846", "20", "9", "#ffffff");


the script is :
<script type="text/javascript">
501$(document).ready(function(){
502 var fo2 = new FlashObject("/img/bars.swf", "viewer", "846", "20", "9", "#ffffff");
503 fo2.addParam("menu","false");
504 fo2.addParam("quality","high");
505 fo2.write("bars");
506 });
507
508</script>

The webpage is www.artex-studio.com

I am sure that it is really dumb problem so please help me out on this. Thank you in advance!