Html 5 help

Hi i have just recently changed over my website to html 5 and now i am missing its navigation bar and footer in earlier versions of ie.
I have put in the javascipt to remy sharps and made the header, footer ect in a block in css. and now i am stuck because am not
sure wot else to do.

the website is

has anyone got any suggestions?

The link to the shiv throws a 404 error. Make sure to check the file path.