<style>

#demo {

width: 200px;

}

#demo ul li {

border: 1px solid black;

background-color: #8DD5E7;

cursor: move;

margin: 3px;

list-style-type: none;

zoom: 1;

}

</style>

<div id="demo">

<ul>

<li>Item #1</li>

<li>Item #2</li>

<li>Item #3</li>

<li>Item #4</li>

<li>Item #5</li>

<li>Item #6</li>

<li>Item #7</li>

<li>Item #8</li>

<li>Item #9</li>

<li>Item #10</li>

</ul>

</div>

<button type="button" id="make">Add More</button>

<script>

YUI().use('dd-delegate', function(Y) {

var del = new Y.DD.Delegate({

container: '#demo',

nodes: 'li'

});

Y.one('#make').on('click', function(e) {

var demo = Y.one('#demo ul');

for (var i = 1; i < 11; i++) {

demo.append('<li>New item #' + i + '</li>');

}

});

});

</script>