Can vertical scrolling with ul and li be done via jQuery?

Question

Example : http://www.net-a-porter.com/product/163606

So far my code:

<style type="text/css">
li {float:left;height:50px}
</style>
<div style="height:100px">
    <a href="#" class="top">up</a>
    <ul>
        <li>Product 1</li>
        <li>Product 2</li>
        <li>Product 3</li>
        <li>Product 4</li>
        <li>Product 5</li>
        <li>Product 6</li>
    </ul>
    <a href="#" class="down">down</a>
</div>

Answer 1

@Shai. Do you know why this is not working. I am finding out if there is more than three LI than show arrows. Otherwise do not show arrows:

jQuery(document).ready(function() {
var ulx;
var totalli;
ulx     = document.getElementById("mycarousel");
totali  = ulx.children.length;
if (totali > 3){
        $(".jcarousel-next").hide();
        $(".jcarousel-prev").hide();
    }else{
        // buttons appear
    }
    jQuery('#mycarousel').jcarousel({
        vertical: true,
        scroll: 2
    });
});

UPDATED - Solution:

jQuery(document).ready(function() {
var ulx     =   document.getElementById("mycarousel");
var totalli =   ulx.children.length;
if (totalli > 3) { 
    jQuery('#mycarousel').jcarousel({vertical:true,scroll:2});
} else {
    jQuery('#mycarousel').jcarousel({vertical:true,scroll:2});
    $(".jcarousel-next").hide();$(".jcarousel-prev").hide();
}
});

Answer 2

You could post the inner UL inside a div with overflow:hidden, and move the inside UL's position up and down, and by that creating a sort of a scroll effect.