rem: stop: function(event) { if (event.preventDefault) { event.preventDefault(); event.stopPropagation(); } else { event.returnValue = false; event.cancelBubble = true; } 
add: stop: function() { if (!this.timer) return; clearInterval(this.timer); this.timer = null; 
context:   stop: function(event) {    if (event.preventDefault) {      event.preventDefault();      event.stopPropagation();    } else {      event.returnValue = false;      event.cancelBubble = true;    }  },
meta: 2801	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2801/7e143d2df37946a5416f0f043869478087652eb6/prototype.js/clean/examples/testcases/prototype.js