Amazon widget not showing on PC

I have added an Amazon associate widget to my website. On my mac the widget displays fine. On my PC it does not display at all. At first I thought it was a difference between browsers, firefox on my PC and safari on my mac. But I installed firefox on my mac and it shows up fine there as well. I also tried it in IE on my pc, obviously it didn't work. Whats going on here. What could be causing firefox to perform differently on different OS's? If it helps I'm running the site on google app engine. I looked in fire bug. On the mac, the js seems to开发者_如何学Python create an embed element. This does not happen on the PC. I don't know where to go from here. If anyone needs more info let me know.

I am posting the widget using Widget-Source But I have also tried just the normal page link and I'm encountering the same problems. blow is the code I'm testing copied directly from the Amazon Widget-Source site.

<script type='text/javascript'>
var amzn_wdgt={widget:'MP3Clips'};
amzn_wdgt.tag='loot03-20';
amzn_wdgt.widgetType='ASINList';
amzn_wdgt.ASIN='B0011Z0YR2,B00137W4P8,B0013G0PG4,B001AU8ZLK,B001AUCJZ8,B001AUEMDK,B001AU8YB6,B001AU8YBQ,B001AU8YCK,B001AUCK2U,B001AUEMFS,B001AUCK52,B001AU6XE6,B001AUEMH6';
amzn_wdgt.title='What I\'ve been listening to lately...';
amzn_wdgt.width='250';
amzn_wdgt.height='250';
amzn_wdgt.shuffleTracks='True';
amzn_wdgt.marketPlace='US';
</script>
<script type='text/javascript' src='http://wms.assoc-amazon.com/20070822/US/js/swfobject_1_5.js'>
</script>

I had the same problem as Lumpy, and yes (duh), after disabling Adblock Plus all was well. Thanks for the tip!