function menuHideReveal(el, hide, reveal){
    $(el).addEvent("click", function(e){
        e.stop();
        $(reveal).reveal();
        $(hide).nix();
    });
}

document.addEvent('domready', function(){
    menuHideReveal($$("#hideRevealLatijn a")[0], "menuLatijnTop", "menuLatijnAlles");
    menuHideReveal($$("#hideRevealGrieks a")[0], "menuGrieksTop", "menuGrieksAlles");
});