Changing the mobile menu to be collapsible and expandable

Hi ,
I think I am getting pretty close to be able to hide the menus in mobile view and use a slider to display them.

I am just having trouble with this code:
jQuery(‘div[class=”mobile-navigation”]’).find(‘li’).find(‘ul’).hide();
jQuery(‘a[href=”#pll_switcher”]’).click(function(){this.next.show;});

When I do the click it does not do anything?
Can someone tell me what is wrong with this jQuery code?

Thanks
Peter

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