I just moved my site from one server at a friend's datacenter to a hosted account at hostgator.com.  I uploaded the same files I was using on the previous server without changing a thing and the site is not working... the error Chrome shows me is:   Uncaught Syntax error, unrecognized expression: :nth-child

I am using the following links to Jquery:

 

http://code.jquery.com/jquery-1.5.min.js

Unless these files have been updated, nothing else has changed.  Can anyone provide some insight for me?

I've checked that all files are present... I re-created / re-populated my databases as well.

Thank you very much,

Jay