Build an Dropline Menu with click Menue at top level

I would build an Dropline Menue with Wayfinder like this:

http://muddydogpaws.com/development/wayfinder/examples/example-3.html

But i would the Menue modify by an "Click Event", when you click on a Menuebutton
on top level then the Dropline Menue would show. Can anyone help me, i have try and try and try
but it doesn´t work.

Many thanks to all !