rem: if(!this.active) return; Event.stopObserving(document, "mouseup", this.eventMouseUp); Event.stopObserving(document, "mousemove", this.eventMouseMove); Event.stopObserving(document, "keypress", this.eventKeypress); 
context:   unregisterEvents: function() {    if(!this.active) return;    Event.stopObserving(document, "mouseup", this.eventMouseUp);    Event.stopObserving(document, "mousemove", this.eventMouseMove);    Event.stopObserving(document, "keypress", this.eventKeypress);  },
meta: 7994	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7994/2763f23a530881acd784be63eed95031c54a4f3a/dragdrop.js/buggy/src/dragdrop.js