CSS Drop Down Menu Not Working on Internet Explorer 9

Here is my site:

http://s452419959.onlinehome.us/

I’m using CSS for the menu.

Menu is set to:

nav ul ul {display:none;}
nav ul li:hover ul {display:block;}

It works in all other browsers except Internet Explorer 9 and below.

Please help! I’ve wasted a ton of time on this!

Please do not create duplicate threads or bump your old thread – they will be closed or deleted – http://wordpress.org/support/topic/ie9-css-drop-down-menu-is-not-working?replies=3

If it’s urgent, consider hiring someone: http://jobs.wordpress.net/