Sortable and stop bubble event

Sortable and stop bubble event


Hi,
I hope someone can help me with this issue. I'm trying to let the user
grab a item in a sortable div content in a draggable div. When I move
the item also the content div moves. How to stop bubble event so the
content div don't move?
Thanks
Mirko
Here's the relevant code:
$(function()
    {
     $(".Container").draggable();
     $(".Droppable").sortable({
     connectWith: ['ul'],
     receive: function(event, ui) {}
     });
    });
...
<div class="demo">
<div class="Container">
<div class="ItemHeader">Header 1</div>
<div class="ItemContent">
<ul class='Droppable'>
    <li class="Item">Can be dropped..</li>
    <li class="Item">Item 2</li>
    <li class="Item">Item 3</li>
    <li class="Item">Item 4</li>
</ul>
</div>
</div>
<div class="Container">
<div class="ItemHeader">Header 2</div>
<div class="ItemContent">
<ul class='Droppable'>
</ul>
</div>
</div>
</div>
...