RRosas80 on "Navigation Bar Trouble"

Hi there, I use to have several drop down menus through my Navigation Bar at the top, but now it only allows me to click on the Home, Privacy, and Contact Us Tab. Does anyone have any idea what could be the cause. I have tried going in and setting the menus up in the dashboard, but nothing is working. In the appearance --> Menue section, it shows that all of my menus are there, but they are not there on the actual site. I am totally new at all of this stuff, so please speak in layman terms if you can. :)

http://www.revivechirooc.com

Any suggestions?

Thanks
Rob