How to revert back to orignal in Drag and Drop?

How to revert back to orignal in Drag and Drop?

Hi,

I am new to jQuery and am looking at he example of drag and drop.  http://jqueryui.com/demos/droppable/#default

When I drop the child on to the parent the text in that is shown as "Dropped!".
What I want is that when I remove the dropped child from the parent the parent should again show "Drop here"


Thanks