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: 863	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/863/3f913f897829fb026ef98df2d57f8da94ee5339d/prototype.js/buggy/public/javascripts/prototype.js