add: this.__deactivateDragMask(); this.currentDragElement.style.zIndex = this.currentDragElement.oldZIndex; 
context: 	__dropElement: function(event)	{		debug("elementDropped ");		this.__deactivateDragMask();		this.currentDragElement.style.zIndex = this.currentDragElement.oldZIndex;			//TODO handle case of mouse dragged off browser	    Event.stopObserving(document, "mousemove", this.__mousemoveHandlerFunction);	    Event.stopObserving(document, "mouseup", this.__dropElementFunction);	    Event.stopObserving(document, "mouseout", this.eventMouseout);	},
meta: 855	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/855/badbb2b5dd38d0a2b604400f786f9b45dd705a73/BirtDndManager.js/clean/viewer/org.eclipse.birt.report.viewer/birt/webcontent/birt/ajax/core/BirtDndManager.js