rem: if (ipv4HostRegExp.test(aHostName) && aHostName != '0.0.0.0') return true; else return false; 
add: return ipv4HostRegExp.test(aHostName) && aHostName != '0.0.0.0'; 
context: function isIPv4HostName(aHostName){  var ipv4HostRegExp = new RegExp(/\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/);  // IPv4  // treat 0.0.0.0 as an invalid IP address  if (ipv4HostRegExp.test(aHostName) && aHostName != '0.0.0.0')    return true;  else    return false;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/6706bb7a84131b95ded47c1d2eb7e6c8bc83d8cf/phishingDetector.js/buggy/mail/base/content/phishingDetector.js