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onDrag Event

## onDrag Event

This event calls user-defined handlers (if there are any) and passes the following parameters:

- sId - id of the source item;
- tId - id of the target item;
- id - if the node is dropped as a sibling, id of the item before which the source node will be inserted;
- sObject - source tree object;
- tObject - target tree object.

              tree.attachEvent("onDrag", function(sId,tId,id,sObject,tObject){});

This event returns:

true - confirms drag-and-drop start;
false - denies drag-and-drop.