[jQuery] How to disable use of proxy in jQuery UI sortables

[jQuery] How to disable use of proxy in jQuery UI sortables


How to disable use of proxy in jQuery UI sortables functionality?
I am sorting three DIV elements that contains iFrames inside it. While
Dragging is started, for some time I am not able to view content
inside that iFrame which is being dragged as it is a proxy element for
the original one. So, Is there any alternative for this?
How to use our own proxy element instead of default one?