Translation of static HTML content

We have static HTML content called from .NET iViews and we now have a requirement to translate this HTML content. Our current process for displaying translated metadata (roles, worksets, pages, iView name, etc) works off the Users IE Language preference. We can insert javascript into the HTML page to re-direct to a translated version, but we can only get this to work using the PC locale and not the IE preferred language. Do you know if javascript can read the IE preferred language, or alternatively detect the logon language.