nazw/nnzwminiapp/pages/js/start.js

window.onload = function () {
    oUl = document.getElementById("nav");
    lis = oUl.getElementsByTagName("li");

    for (var i = 0; i < lis.length; i++) {
        lis[i].onclick = function () {

            oUl.className = "nav  " + this.className;
            var score = this.getElementsByTagName("a")[0].title;
        }
    }
}