Need to delay the checkbox order

I need to make this checkbox script delay for 1-2 secound before it change the order of the checked items and the way around.

<ul>
<li><label><input type="checkbox" id="one" />One</label></li>
<li><label><input type="checkbox" id="two" />Two</label></li>
<li><label><input type="checkbox" id="three" />Three</label></li>
<li><label><input type="checkbox" id="four" />Four</label></li>
<li><label><input type="checkbox" id="five" />Five</label></li>
</ul>

Script

var list = $("ul"),
    origOrder = list.children();

list.on("click", ":checkbox", function() {
    var i, checked = document.createDocumentFragment(),
        unchecked = document.createDocumentFragment();
    for (i = 0; i < origOrder.length; i++) {
        if (origOrder[i].getElementsByTagName("input")[0].checked) {
            checked.appendChild(origOrder[i]);
        } else {
            unchecked.appendChild(origOrder[i]);
        }
    }
    list.append(checked).append(unchecked);
});

Have tried to put a timer on, but failed...