add: if(draggable.options[eventName]) draggable.options[eventName](this); 
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: 4973	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4973/e321fea35b6ecd3ecdf4ed7662ff8917ab1af51f/dragdrop.js/buggy/src/dragdrop.js