I don't see any errors on the demos. What is the url you are getting errors one?
Do you have the bgiframe plugin installed too? GET /css/bgIframe.js these errors look like they are from an incorrect call of the js doc from your html... ET /css/css/css/css/ do you have something like this? <script type="text/javascript" src="../css/jquery-1.2.3.min.js"></ script> if you're site is has multiple levels of pages, you need it to be something like this: <script type="text/javascript" src="/css/jquery-1.2.3.min.js"></script>