We are not sure where exactly those mistakes are because this requires time investigation in content, plugins and other customization. We are just telling you what we see in the code. If you open your site in html mode you will see red colored parts.
Comments
Please open your website in Firefox html mode (CTRL+U) and check html errors you got. Please fix them first and all should be fine.
P.S. Anticipating your question, yes, those errors are not associated with theme and were made by you or one of your extra plugins.
Thanks!