Ghost Display While Dragging Node

Using GoSilverlight 1.2

I making work Process flow map design program using drag and drop function.
It's has two diagram .
One is drag source diagram another is drag target diagram.
First diagram set isReadonly = true
Drag not simulate ( display dragging ghost) but drop operation is ok.
I want to display drag silmulate ghost below readonly mode.
Help you!!!

I don’t know if that’s possible at this time.