My first-ever jQuery works, but it's not efficient. Any pointers?
I found .toggle() in the jQuery docs, and it seemed to me I could use that far better. I changed my code into:

jQuery(document).ready(function(){
    var nav = jQuery(".navigation-menu");
    var button = jQuery(".navigation-title");

    nav.toggle();

    button.click(function(event){
        event.preventDefault();
        nav.toggle('fast');
    });
});


This looks a lot leaner and better readable.