var languages = ['Pascal', 'Lua', 'Ruby'];
var i;
var ul = $('#test-div>ul');
var li = ul.find('li');
for (i=0; i<li.length; i++) {
    var c = li[i];
    alert(c.innerText);
    languages.push(c.innerText);
}
languages.sort();
alert(languages);
var rli = $('#test-div>ul>li');
rli.remove();
var l = languages.length;
for (i=0; i<l; i++) {
    ul.append('<li><span>' + languages.shift() + '</span></li>');
}