Drag-and-drop Problem

Hey, there…

I have some problem when I use draggable_element function in rails…
I have watch demo shopping cart(http://demo.script.aculo.us/shop)

When i drag a image to some div place, method triggered, and then the
image disappear at all, I don’t want them gone, and in demo shopping
cart…the tshirt and the cup do not…

I have tried many days doing so…any posts will be appreciated…

Thanks

Richard