rem: this.unregisterEvents(); 
add: Draggables.unregister(this); 
context:   destroy: function() {    Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);    this.unregisterEvents();  },
meta: 3974	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3974/af9adbf17404d887f31369756326b0109da7ae2b/dragdrop.js/buggy/root/static/js/dragdrop.js