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onDragIn Event

## onDragIn Event

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

- dId - id of the dragged item;
- lId - id of the potential drop landing;
- sObject - source object;
- tObject - target object.

              tree.attachEvent("onDragIn", function(dId,lId,id,sObject,tObject){});

This event returns:

true - allows drop;
false - denies drop.