Drop Down Menus not working on mobile devices

Our site works in all desktop browsers - but the drop down menus aren't working in mobile devices. Any help greatly appreciated.

The site is www.totalfitnessclubs.com

Lisa

You'll need to use javascript to show/hide the submenu when the top level items are tapped/clicked

Lucas answer is correct, basically there is no css :hover event on mobile devices, so you need javascript (for example something like this https://github.com/senchalabs/jQTouch/wiki/Initialization-Options) to make that navigation work.

Gentleman - thank you for the info. We'll try - hopefully it'll work!