Can't get jQuery script to work

Can't get jQuery script to work

Hi there first post here.

Im looking at a Jquery script that should work and I have tested it here:  http://jsfiddle.net/LysCF/13/

But I can't get it to work in the browser: Chrome and IE

What do I need to get it to work? 

The drop down Menu is opened when page is loaded.

Thanks