/*Bir Önceki Menüye dön*/   
const submenutitle = document.querySelector('.submenutitle');
submenutitle.addEventListener('click', (e) => {
    const submenu = e.currentTarget.parentElement;
    const parent = submenu.parentElement;
  
    submenu.classList.remove("showleft");
    submenu.classList.remove("showvisibility");
  
    parent.classList.add("showleft");
    parent.classList.add("showvisibility");
})