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: 3974	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3974/af9adbf17404d887f31369756326b0109da7ae2b/prototype.js/buggy/root/static/js/prototype.js