My b2evolution Version: 2.x

Not sure what I am doing wrong here. When I try to embed a widget from one of my two online stores, Etsy and Artfire, nothing shows up. I can get it in the sidebar but not in a post itself.

<script type='text/javascript' src='http://www.etsy.com/etsy_mini.js'></script><script type='text/javascript'>new EtsyNameSpace.Mini(6408037, 'shop','gallery',4,1).renderIframe();</script>