rem: if (event.preventDefault) { event.preventDefault(); event.stopPropagation(); 
add: if (event.preventDefault) { event.preventDefault(); event.stopPropagation(); 
context:   stop: function(event) {    if (event.preventDefault) {      event.preventDefault();      event.stopPropagation();    } else {      event.returnValue = false;      event.cancelBubble = true;    }  },
meta: 1782	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1782/3f0bcc29b1d13b6ec87c6b75980c7f271e175e80/prototype.js/buggy/webapp/sandbox/scripts/prototype.js