rem: || this.transport.status == 0 
add: || this.transport.status == 0 
context:   responseIsSuccess: function() {    return this.transport.status == undefined        || this.transport.status == 0        || (this.transport.status >= 200 && this.transport.status < 300);  },
meta: 1782	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1782/3f0bcc29b1d13b6ec87c6b75980c7f271e175e80/prototype.js/buggy/webapp/sandbox/scripts/prototype.js