Dropdown menu within a custom navigation

Hello,

I was wondering if it was possible to make an accordion menu using mootools in a custom navigation module. I want my sub-menu to slide down nicely.

Is there an extension to do that ?

Thanks

Just to answer this older question; I don't expect there to be an extension that does this. But the accordion is nothing more then the right html with class names and already existing js that comes with Contao. So if you study the accordion example you have every piece of information you need to build the html template.