add: if(draggable.options[eventName]) draggable.options[eventName](draggable, event); 
context:   notify: function(eventName, draggable, event) {  // 'onStart', 'onEnd', 'onDrag'    if(this[eventName+'Count'] > 0)      this.observers.each( function(o) {        if(o[eventName]) o[eventName](eventName, draggable, event);      });  },
meta: 6601	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6601/28b3187d07d97712c23182569a4d6fd00900b5f7/dragdrop.js/buggy/javascript/script.aculo.us/dragdrop.js