$(document).ready(function() {
    
    // insert cmjn version of the text, to be shown on hover
    $('#nav > li > a').each(function(){
        var span = cmjn($(this));
        $(this).replaceWith(span); 
    });
    
    // on first level item click, show its subnav by adding an 'opened' class to parent node(li)
    $('#nav > li > a').click(function() {
        $('#nav > li').not($(this).parent()).removeClass('opened');
        $(this).parent().toggleClass("opened");
        //return false;
    });
  
    
});