rem: this._source = this._targets = this._dragBox = null; 
add: this._source = this._targets = this._dragBox = this._dragInd = null; 
context:     destroy: function() {        this._dragBoxHandler.destroy();        if (this._source.getDragArea() != null) {            tw_removeEventListener(this._source.getDragArea(), "mousedown", this._mouseDown);        }        this._source = this._targets = this._dragBox = null;    }
meta: 5515	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5515/cfa7cacc22cf44240d4fdac2a16ac0b70fe21708/DragAndDropHandler.js/clean/src/thinwire/render/web/resources/DragAndDropHandler.js