Im getting an error-message on my product-pages. in firefox it says:

[Exception... "Could not convert JavaScript argument" nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)" location: "JS frame :: http://www. dammbutiken.se/includes/...e-1.11.slim.js :: anonymous :: line 3" data: no]

I also have some errors when testing HTML at http://validator.w3.org But i dont know how to fix those either.

Im a serious newbie so i really need someone telling me exactly what line to change and what to change it in to. Hope some expert is out there.

Thanks for your help!
Peter
http://www.dammbutiken.se/