[jQuery] Use Sortable and Droppable together can't work in IE (but work in Firefox)

I'm having a problem with using Sortable and Droppable (interface
plugin for jquery) together.My Idea is drag an item into a container
(dropable), and then when I drop it there is one new item will be
created in the container item and I want the new items can sort
together in the container. As you know, we can't use Sortable and
Droppable together. So I have some trick for that problem. Below is my
code. As you see, first in the ready() function, I load Sortable for
the container and then define draggable for the items. Then, with the
onStart event of dragable items, I destroy the sortable of the
containers and load droppable of them. The onStop event is when I
destroy the droppable and then recall the sortable of the
containers.And the problem is that, it worked great in Firefox but
rase some error in IE (so I add some stupid try catch for that, but it
still can't work :( ). Can you help me for this error? Or are there
any other solution to solve my problem? Thank you!!!
function loadDropable()
{
    $("div.itemContainer").Droppable(
     {
     accept : 'menuItem',
     hoverclass:    'menuItemHover',
     ondrop:    function (drag)
             {
$(this).html($(this).html() + "<br/>" + $
(drag).attr("id"));
}
     }
    );
}
function loadSortable()
{
    $('div.itemContainer').Sortable(
        {
            accept: 'item',
            helperclass: 'sortHelper',
            activeclass :     'sortableactive',
            hoverclass :     'sortablehover',
            handle: 'div.itemTitle',
            tolerance: 'pointer',
            onStart : function()
            {
                $.iAutoscroller.start(this,
document.getElementsByTagName('body'));
            },
            onStop : function()
            {
                $.iAutoscroller.stop();
            }
        }
    );
}
$(document).ready(
function()
{
loadSortable();
     $('div.menuItem').Draggable(
     {
         zIndex:     1000,
     ghosting:    true,
     opacity:     0.7,
     revert: true,
     fx:300,
     onStart: function ()
     {
     try
     {
     $('div.itemContainer').SortableDestroy();
     }
     catch(err)
     {
     }
     loadDropable();
     },
     onStop: function()
     {
     try
     {
     $("div.itemContainer").DroppableDestroy();
     }
     catch(err)
     {}
            loadSortable();
     }
     }
     );
}
);