droppable() & show()

droppable() & show()

Hello,
I'm facing a problem using droppable() and show() combined together?
I have an HTML element, with display:none; property, on which I apply
droppable().
I also have other HTML elements, on which I apply draggable().
On the draggable's start() event, I apply show() on my droppable
element. But my draggable elements can't be dropped in my droppable.
As if the droppable() could not work if the droppable element is not
visible when the page loads.
Here is a test page : http://wir3d.net/tests/dragdrop.html
Is it possible to make a hidden element be shown and droppable when a
draggable element start being dragged ?
Any help is welcome.
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